Lanka climate — normals and trends
Lanka (India) has a humid subtropical, dry winter climate (Cwa) under the Köppen-Geiger classification. Its mean annual temperature is 24.0 °C and it receives 1,766 mm of precipitation per year.
These figures are normals computed over 86 complete calendar years, from 1940 to 2025, using ERA5 reanalysis data from the Copernicus programme.
The warmest month is July (28.5 °C on average) and the coldest is January (16.4 °C). Rainfall peaks in June.
Lanka averages 0 frost days, 172 hot days (≥ 30 °C) and 164 rainy days per year.
Lanka has warmed by +1.6 °C between 1940 and 2025, or +0.19 °C per decade. This trend is statistically significant.
The hottest day of the period reached 41.0 °C (on 1 May 1960) and the coldest 4.3 °C (on 4 January 1962).
Data from ERA5 reanalysis (Copernicus Climate Change Service), redistributed under a CC-BY 4.0 licence. Normals are recomputed whenever the archive is updated.
Climate normals · ERA5
LankaAssam
- coords
- 25.93°, 92.95°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
24.0°C
Average daily high
29.1°C
Average daily low
19.9°C
Annual rainfall
1,766mm
Sunshine / day
9.5h
Mean relative humidity
81%
Average peak wind
8.8km/h
Seasonal range
12.1°C
Frost days (< 0 °C)
0 d/yr
Hot days (≥ 30 °C)
172 d/yr
Rainy days (≥ 1 mm)
164 d/yr
Annual snowfall
0.0 cm
Average feels-like high
33.4 °C
Average feels-like low
22.8 °C
Average peak gust
21.3 km/h
Tropical nights (≥ 20 °C)
206 d/yr
Solar radiation
16.1 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.6 °C
since 1940
+0.2 °C per decade · r² = 0.63 · p = < 0.001
Trend fitted by linear regression (ordinary least squares) on annual means. A trend is shown only when it is statistically significant (p < 0.05).
A climograph overlays rainfall (bars) and temperature (line): the standard reading in climatology, where you can see at a glance whether the warm season is also the dry one.
Records for the period
Hottest day
41.0 °C
1 May 1960
Coldest day
4.3 °C
4 January 1962
Wettest day
264 mm
10 July 1960
Windiest day
46.4 km/h
1 October 1966
Strongest gust
91.8 km/h
28 May 2024
Hottest feels-like
48.4 °C
28 July 2024
Coldest feels-like
2.1 °C
4 January 1962
Sunniest day
13.2 h
2 July 1942
Normals computed over complete calendar years 1940–2025.
A specific year
Pick a year and see how it compares to normal — warmer, drier or more extreme than usual?
Across the whole year
Month by month
| High | vs. normal | Precipitation | vs. normal | |
|---|---|---|---|---|
| Jan | 25.5 °C | +2.1 °C | 5 mm | -8 mm |
| Feb | 27.2 °C | +1.3 °C | 3 mm | -14 mm |
| Mar | 32.4 °C | +2.6 °C | 4 mm | -36 mm |
| Apr | 34.9 °C | +3.7 °C | 24 mm | -77 mm |
| May | 32.5 °C | +1.3 °C | 244 mm | +19 mm |
| Jun | 34.0 °C | +2.2 °C | 185 mm | -142 mm |
| Jul | 34.3 °C | +2.6 °C | 186 mm | -127 mm |
| Aug | 32.9 °C | +1.3 °C | 409 mm | +112 mm |
| Sep | 33.6 °C | +2.5 °C | 159 mm | -92 mm |
| Oct | 32.3 °C | +2.6 °C | 61 mm | -82 mm |
| Nov | 29.0 °C | +1.9 °C | 39 mm | +11 mm |
| Dec | 25.9 °C | +1.7 °C | 0 mm | -11 mm |
The year's extremes
What was the weather like that day?
Your birthday, a wedding, a memorable trip: discover the actual weather for any date since 1940.
Frequently asked questions
What is the climate of Lanka?
Lanka has a humid subtropical, dry winter climate (Köppen Cwa). Over 1940-2025, the average annual temperature is 24.0 °C and it receives 1,766 mm of precipitation per year.
What is the hottest day ever recorded in Lanka?
The hottest day measured in Lanka between 1940 and 2025 was 1 May 1960, reaching 41.0 °C.
What is the coldest day in Lanka?
The coldest day measured in Lanka between 1940 and 2025 was 4 January 1962, at 4.3 °C.
Does it snow in Lanka?
Almost never: Lanka sees virtually no snow, with about 0 frost days per year.
Has the climate of Lanka warmed?
Yes: Lanka warmed by +1.6 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Lanka?
The wettest day measured in Lanka between 1940 and 2025 was 10 July 1960, with 264 mm of rain in 24 hours.
What was the windiest day in Lanka?
The windiest day measured in Lanka between 1940 and 2025 was 1 October 1966, with winds reaching 46.4 km/h.
What is the warmest month in Lanka?
The warmest month in Lanka is July (28.5 °C on average); the coldest is January (16.4 °C).
How much does it rain in Lanka?
Lanka receives on average 1,766 mm of precipitation per year, spread over about 164 rainy days.
Is it sunny in Lanka?
Lanka gets on average 9.5 hours of sunshine per day, roughly 3,468 hours per year over 1940-2025.
Are there tropical nights in Lanka?
Yes: Lanka has on average 206 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Lanka?
In Lanka, between 1940 and 2025, the highest apparent temperature reached 48.4 °C on 28 July 2024, and the lowest was 2.1 °C on 4 January 1962.
Compare Lanka with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Lanka