The climate zones of India, when mapped with the Köppen-Geiger system, range from hot desert in the west to tropical monsoon on the south-western coast, humid subtropical across much of the north and east, and alpine and tundra conditions high in the Himalaya. The Köppen scheme sorts every place on Earth into a letter-coded climate type using only average monthly temperature and rainfall, which makes it a simple, comparable way to describe why Jaisalmer, Mumbai, Chennai, Shillong and Leh feel like different countries even though they share one flag.
India does not have one climate but a mosaic of them, stitched together by the monsoon, the Himalayan wall, the Thar Desert and two long coastlines. Learning the climate zones of India helps explain where crops grow, where cities flood or bake, and why a single national average for temperature or rain hides so much. It also shows where the Köppen system works well for India and where its tidy boxes are a poor fit for a country whose weather is run by seasonal winds.
Quick Facts
| System | Köppen-Geiger climate classification, devised by Wladimir Köppen from 1884 and later modified by Rudolf Geiger |
|---|---|
| Inputs used | Average monthly temperature and average monthly precipitation only |
| Main groups (first letter) | A tropical, B dry, C temperate or mild, D continental, E polar or alpine |
| Most widespread type in India | Aw, tropical savanna, across much of the peninsula and Deccan interior |
| Wettest types | Am tropical monsoon on the west coast and parts of the north-east; humid subtropical types in the north-east hills |
| Driest types | BWh hot desert in western Rajasthan and Kutch; BSh hot semi-arid in the rain shadow of the Western Ghats and in the north-west |
| Cold types | Highland, tundra and ice-cap climates (E group) and cold desert in Ladakh at high altitude |
| Indian alternative | India Meteorological Department (IMD) uses four seasons and its own regional climate divisions |
| Key limitation | Averages hide the sudden onset of the monsoon and sharp changes with altitude |
Key Takeaways
- Under the Köppen system, India spans tropical, dry, mild, cold and polar-type climates, which is among the widest ranges of any country of its size.
- Tropical savanna (Aw) is the dominant climate of the peninsular interior, while tropical monsoon (Am) fits the rain-soaked Konkan, Malabar and parts of the north-east.
- Dry climates (BWh and BSh) cover western Rajasthan, Kutch and the rain-shadow belt east of the Western Ghats, where annual rainfall is low and erratic.
- The vast Indo-Gangetic plain is usually mapped as humid subtropical with a dry winter (Cwa) or as semi-arid, depending on the data set used, and it is the most debated region on the map.
- Altitude is a climate zone of its own: Himalayan slopes climb from subtropical foothills to alpine meadows, tundra and permanent ice within a few hundred kilometres.
- The Köppen scheme is a useful common language, but it uses averages and fixed thresholds, so it cannot capture monsoon onset, extreme events or fine local differences.
What is the Köppen climate classification?
The Köppen climate classification is a system that assigns each location a code of two or three letters based on its annual and seasonal pattern of temperature and rainfall. It was created by the German-Russian climatologist Wladimir Köppen, who first published a map in 1884 and refined it over decades, and it was later adjusted by Rudolf Geiger, which is why it is often called the Köppen-Geiger system.
The central idea is that natural vegetation reflects climate, so the climate boundaries are drawn to match the limits of plant types such as rainforest, grassland and desert. The first letter gives the main group. A is tropical, where every month averages at least 18 degrees Celsius. B is dry, where evaporation exceeds rain. C is mild or temperate, where the coldest month is between roughly 0 and 18 degrees. D is continental, with a very cold winter. E is polar or alpine, where even the warmest month stays below 10 degrees.
The second letter describes rainfall. In the tropical group, f means wet all year, m means monsoon, w means a dry winter and s means a dry summer. In the dry group, W means true desert and S means steppe or semi-arid. A third letter, such as h for hot or k for cold in dry climates, or a, b and c for the warmth of summer in mild climates, adds detail. Most modern maps of India use the version of this scheme updated with recent global climate data, so the exact boundaries differ slightly between publications.
Why does India have so many climate zones?
India has so many climate zones because it stretches from about 8 degrees north to over 37 degrees north, spans sea level to the world’s third-highest peak, and sits between the Himalaya and the Indian Ocean, which together drive the monsoon. Each of these factors pushes the climate in a different direction, and their overlap produces the variety seen on the map.
Several controls matter most:
- Latitude and the Tropic of Cancer, which cuts across the middle of the country, divide a mostly tropical south from a more seasonal north.
- The Himalaya block cold air from Central Asia in winter and trap moist monsoon air in summer, keeping the plains warmer in winter and wetter in summer than they would otherwise be.
- The Western Ghats force moist south-westerly winds upward, drenching the windward coast and leaving a dry rain shadow on the leeward side.
- The Thar Desert heats up fiercely in summer, creating the low pressure that helps pull the monsoon inland.
- The Arabian Sea and the Bay of Bengal supply moisture and moderate coastal temperatures.
- Altitude lowers temperature by about 6 degrees for every 1,000 metres, producing a stack of climates on mountain slopes.
Which tropical climates cover India?
Three tropical climates cover India: tropical savanna (Aw), tropical monsoon (Am) and, along a stretch of the south-east coast, tropical savanna with a dry summer (As). Together they account for most of the peninsula and are defined by every month having an average temperature of at least 18 degrees Celsius.
Tropical savanna (Aw)
Tropical savanna is the most extensive Köppen type in India. It covers much of the Deccan and the interior peninsula, including large parts of Maharashtra, Karnataka, Telangana, Madhya Pradesh, Chhattisgarh, Odisha and Jharkhand, and it also appears in sections of the east coast and the eastern plains. The pattern is a clear dry winter and spring followed by a wet monsoon from June to September. Cities such as Nagpur and Bhubaneswar fit this pattern, and so do the dry deciduous and moist deciduous forests that grow here, which shed their leaves in the dry months.
Tropical monsoon (Am)
Tropical monsoon climate is found where the monsoon rain is so heavy that it more than compensates for a distinct dry season. In India it hugs the Western Ghats coast from the Konkan through Goa and coastal Karnataka to Kerala, and it extends to the Andaman and Nicobar Islands and parts of the north-east. Annual rainfall often exceeds 2,000 millimetres, much of it between June and September. Mumbai, Mangaluru and Kochi are typical, supporting evergreen and semi-evergreen forests, spice plantations, coconut and rice.
Tropical savanna with a dry summer (As)
The Coromandel coast of Tamil Nadu and the adjoining strip of Andhra Pradesh behave differently from the rest of the tropical zone. Because the southwest monsoon is weak here and most rain arrives from October to December with the northeast monsoon and cyclones from the Bay of Bengal, the driest season is the hot summer rather than the winter. This gives an As climate, and Chennai is its best-known example.
Where are India’s dry climates?
India’s dry climates lie in the west and north-west, where hot desert (BWh) covers western Rajasthan and Kutch and hot semi-arid steppe (BSh) surrounds it and extends into Punjab, Haryana, Gujarat and the Deccan rain shadow. These are regions where evaporation is greater than rainfall for most of the year.
The Thar Desert is the clearest BWh area, with annual rainfall below about 250 millimetres in its driest parts and summer temperatures that can exceed 48 degrees Celsius. Jaisalmer and Bikaner fit this type. Around the desert, the transition to semi-arid is gradual, with the rainfall rising to roughly 400 to 600 millimetres as one moves east and south.
A second semi-arid belt lies on the leeward side of the Western Ghats, across the interior of Maharashtra, north Karnataka and the Rayalaseema region of Andhra Pradesh. This is a classic rain shadow. The Ghats strip moisture from the monsoon winds on their western face, and the air that descends on the east is dry. Places such as Solapur, Ballari and Anantapur receive little rain and are among the most drought-prone districts in the peninsula.
High in the trans-Himalaya, Ladakh has a cold desert climate, often written BWk, with very little precipitation and bitter winters. The monsoon rarely reaches it because the main Himalayan range shelters it, and Leh receives only about 100 millimetres of precipitation in a year.
What is the climate of the northern plains and north-east?
The northern plains are usually classed as humid subtropical with a dry winter (Cwa), the north-east hills as humid subtropical with no dry season, and the climate map of both regions changes depending on the data set and thresholds used. This is why one atlas may call Delhi semi-arid while another calls it humid subtropical.
The Indo-Gangetic plain has three clear stages: a cool dry winter with occasional fog and western disturbances, a scorching pre-monsoon summer, and a wet monsoon. Because the coldest month in much of the plain falls below 18 degrees Celsius, the area leaves the tropical group and enters the mild group. A hot summer, a dry winter and a wet monsoon give the Cwa code. Lucknow, Patna and Varanasi illustrate it. Delhi sits on the border and is mapped as either semi-arid or Cwa in different studies, since its rainfall of around 700 millimetres a year is close to the line that separates steppe from humid climates.
The eastern end of the plain, including Kolkata and much of West Bengal, is wetter and warmer, and is often shown as tropical savanna because winter temperatures stay high.
North-east India is among the rainiest regions on Earth. Parts of Assam, Meghalaya and Arunachal Pradesh are mapped as humid subtropical with no dry season (Cfa) or as subtropical highland (Cwb or Cfb) at moderate elevations. Cherrapunji and Mawsynram in Meghalaya receive several thousand millimetres of rain a year, much of it in the monsoon months. The Brahmaputra valley is hot and humid in summer and mild in winter, and tea thrives in this climate.
How do Himalayan and highland climates fit into the scheme?
Himalayan and highland climates fit into the Köppen scheme as a vertical series, moving from subtropical foothills through mild highland and cold continental types to tundra and ice cap as altitude rises. Because temperature drops with height, a single mountain slope can contain several Köppen types.
The foothills and lower valleys of Uttarakhand, Himachal Pradesh and Jammu and Kashmir are humid subtropical or mild. Hill stations such as Shimla, Darjeeling and the Nilgiri town of Ooty are classed as subtropical highland (Cwb), with mild summers and cool winters. Higher up, winters turn cold enough for snow and the climate is cold continental (D group), seen in parts of Kashmir, Lahaul and Spiti, and Sikkim. Above the tree line, which lies at roughly 3,500 to 4,000 metres in the Himalaya, the climate becomes tundra (ET), where the warmest month averages below 10 degrees Celsius. At the highest elevations, the climate is ice cap (EF), where every month stays below freezing and glaciers form.
Glaciers such as the Gangotri and Siachen exist because of this cold climate, and they feed the Ganga, Indus and Brahmaputra systems. As the Himalayan zone warms, climate boundaries are slowly shifting upslope, a trend that Köppen maps drawn for different periods can reveal.
What are the main Köppen climate zones of India at a glance?
The main Köppen climate zones of India at a glance are the tropical, dry, mild, continental and polar-type climates listed below, each tied to a typical region and a place that illustrates it. The table gives a simplified picture, because real boundaries are gradual and differ slightly between data sets.
| Köppen code | Climate name | Where in India | Typical example |
|---|---|---|---|
| Aw | Tropical savanna | Peninsular interior, Deccan, parts of the east | Nagpur, Bhubaneswar |
| Am | Tropical monsoon | Konkan, Goa, Malabar coast, Andaman and Nicobar, parts of the north-east | Mumbai, Kochi |
| As | Tropical savanna with dry summer | Coromandel coast of Tamil Nadu | Chennai |
| BWh | Hot desert | Western Rajasthan, Kutch | Jaisalmer, Bikaner |
| BSh | Hot semi-arid | Rain-shadow interior, Gujarat, Punjab and Haryana fringes | Solapur, Anantapur |
| BWk | Cold desert | Ladakh and the trans-Himalaya | Leh |
| Cwa | Humid subtropical, dry winter | Indo-Gangetic plain and sub-Himalayan belt | Lucknow, Patna |
| Cfa / Cwb | Humid subtropical and subtropical highland | North-east hills, Himalayan foothills, hill stations | Shillong, Darjeeling, Ooty |
| D group | Cold continental | Higher Himalayan valleys | Lahaul, Spiti |
| ET / EF | Tundra and ice cap | Above the tree line and the snow line | High Himalayan peaks and glaciers |
How does the Köppen system compare with India’s own seasons?
The Köppen system compares with India’s own seasons as a static map against a calendar, because IMD and most Indian textbooks describe the year as four seasons, winter, summer, southwest monsoon and the retreating monsoon, while Köppen describes the average climate of a place. The two approaches answer different questions and are best used together.
The Indian seasonal view captures the rhythm of the monsoon: the sudden arrival in Kerala around the start of June, the advance across the country, the withdrawal from September, and a second burst of rain in Tamil Nadu in the northeast monsoon. A Köppen code compresses all that into letters, and the letter m or w only hints at it.
Indian scientists have also proposed regional schemes. Climatologists have long used a division based on rainfall and temperature, and the Trewartha system, a modification of Köppen, is sometimes applied to India. Official climate normals and monsoon forecasts, however, are organised by meteorological subdivisions that follow state and regional boundaries rather than Köppen zones.
What are the strengths and limits of the Köppen scheme for India?
The strengths of the Köppen scheme for India are that it is simple, global, reproducible and tied to vegetation, while its limits are that it uses long-term averages, fixed thresholds and coarse grids that smooth over the extremes and local detail that matter most in India.
Strengths
Because it needs only monthly temperature and rainfall, the scheme can be applied to any weather station or climate model, which makes it ideal for comparing India with other countries and for tracking change over time. It maps well onto natural vegetation, so forests, scrub and deserts line up broadly with the climate codes. It also gives teachers, planners and the public a common vocabulary.
Limits
Several limits are particularly important in India. First, averages conceal the monsoon’s abruptness and its year-to-year swings, so a place can be classed as savanna yet suffer both drought and flood within a decade. Second, sharp thresholds mean that a small change in rainfall can move a city from one class to another, as with Delhi. Third, mountain climates change over very short distances, and a coarse map cannot show the many micro-climates of the Himalaya and the Western Ghats. Fourth, the scheme ignores humidity, wind and extreme heat, all of which affect how a climate feels and how people live. Finally, a map based on past data does not show where climates are heading.
How is climate change shifting India’s climate zones?
Climate change is shifting India’s climate zones by warming nearly the whole country and altering rainfall patterns, which pushes climate boundaries upslope in the mountains and may nudge dry and wet belts at the margins. Global studies that compare Köppen maps from the early twentieth century with recent decades find that tropical and dry zones have expanded while polar and cold zones have contracted.
In India, the clearest signal is warming. Average temperatures have risen by roughly 0.7 degrees Celsius over the past century, and heatwaves have become more frequent. Rainfall change is less uniform, with a decline in gentle monsoon rain in some regions and a rise in intense short bursts in others. In the Himalaya, snow lines are moving up and glaciers are retreating, which means the area of tundra and ice-cap climate is shrinking over time. Projections suggest that parts of the subtropical and mild zones could become hotter and wetter, but precise map changes remain uncertain and depend on the emissions pathway and the model used.
Bottom Line
The Köppen map shows India as a continent in miniature, from the Thar’s hot desert to the monsoon coast, the humid plains and the frozen Himalayan crest, all shaped by latitude, altitude, the Ghats and the monsoon. It is a handy first guide to regional climate, but it works best alongside seasonal and extreme-weather information. Last updated: 2 November 2026.
Frequently Asked Questions
How many climate zones does India have?
There is no single official number, because it depends on how finely the Köppen system is applied. Most maps show roughly eight to ten distinct types in India, from hot desert and tropical savanna to humid subtropical, highland, tundra and ice cap. The group letters A, B, C, D and E are all represented.
What is the most common Köppen climate in India?
Tropical savanna, coded Aw, is the most widespread Köppen climate in India. It covers much of the peninsular interior and the Deccan plateau. It is marked by a hot, dry stretch from winter to early summer and a heavy monsoon from June to September.
Which part of India has a desert climate?
Western Rajasthan and the Kutch region of Gujarat have a hot desert climate, coded BWh. Rainfall in the Thar Desert is often under 250 millimetres a year and summer temperatures can exceed 48 degrees Celsius. Ladakh has a separate cold desert climate at high altitude.
What is the climate of Mumbai and Chennai in the Köppen system?
Mumbai has a tropical monsoon climate (Am), with very heavy rain from June to September and a long dry season. Chennai is classed as tropical savanna with a dry summer (As), because most of its rain arrives from October to December with the northeast monsoon rather than in summer.
Why is Delhi hard to classify in the Köppen system?
Delhi lies close to the boundary between semi-arid and humid subtropical climates. Its annual rainfall of roughly 700 millimetres sits near the threshold that separates the two. Depending on the data period and thresholds used, maps label it BSh or Cwa.
Does the Köppen system work well for India?
The Köppen system works well as a broad, comparable summary of India’s climate, but it has limits. It uses average monthly values, so it cannot show the sudden onset of the monsoon, droughts, floods or heatwaves. It also smooths out mountain micro-climates, so it is best used with seasonal and local weather information.
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