Vettavalam climate — normals and trends
Vettavalam (India) has a tropical savanna climate (Aw) under the Köppen-Geiger classification. Its mean annual temperature is 28.2 °C and it receives 857 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 May (32.2 °C on average) and the coldest is January (24.1 °C). Rainfall peaks in October.
Vettavalam averages 0 frost days, 290 hot days (≥ 30 °C) and 120 rainy days per year.
Vettavalam has warmed by +0.9 °C between 1940 and 2025, or +0.11 °C per decade. This trend is statistically significant.
The hottest day of the period reached 45.2 °C (on 14 May 1956) and the coldest 12.9 °C (on 26 December 1941).
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
VettavalamTamil Nadu
- coords
- 12.11°, 79.25°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
28.2°C
Average daily high
33.6°C
Average daily low
24.1°C
Annual rainfall
857mm
Sunshine / day
10.1h
Mean relative humidity
68%
Average peak wind
15.1km/h
Seasonal range
8.1°C
Frost days (< 0 °C)
0 d/yr
Hot days (≥ 30 °C)
290 d/yr
Rainy days (≥ 1 mm)
120 d/yr
Annual snowfall
0.0 cm
Average feels-like high
36.7 °C
Average feels-like low
27.5 °C
Average peak gust
33.3 km/h
Tropical nights (≥ 20 °C)
322 d/yr
Solar radiation
19.3 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+0.9 °C
since 1940
+0.1 °C per decade · r² = 0.32 · 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
45.2 °C
14 May 1956
Coldest day
12.9 °C
26 December 1941
Wettest day
188 mm
18 November 2021
Windiest day
36.2 km/h
4 December 1993
Strongest gust
78.5 km/h
4 December 1993
Hottest feels-like
47.5 °C
26 May 2019
Coldest feels-like
13.0 °C
26 December 1941
Sunniest day
12.6 h
26 May 1940
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 | 29.4 °C | +0.1 °C | 25 mm | +6 mm |
| Feb | 32.5 °C | +0.4 °C | 2 mm | -8 mm |
| Mar | 34.5 °C | -0.5 °C | 26 mm | +10 mm |
| Apr | 36.6 °C | -0.6 °C | 19 mm | -4 mm |
| May | 35.7 °C | -2.8 °C | 151 mm | +97 mm |
| Jun | 35.8 °C | -0.9 °C | 36 mm | -23 mm |
| Jul | 35.9 °C | +0.5 °C | 37 mm | -34 mm |
| Aug | 34.3 °C | -0.6 °C | 92 mm | +3 mm |
| Sep | 34.1 °C | -0.3 °C | 65 mm | -49 mm |
| Oct | 31.6 °C | -0.3 °C | 179 mm | +8 mm |
| Nov | 30.3 °C | +0.7 °C | 132 mm | -21 mm |
| Dec | 29.2 °C | +0.6 °C | 31 mm | -50 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 Vettavalam?
Vettavalam has a tropical savanna climate (Köppen Aw). Over 1940-2025, the average annual temperature is 28.2 °C and it receives 857 mm of precipitation per year.
What is the hottest day ever recorded in Vettavalam?
The hottest day measured in Vettavalam between 1940 and 2025 was 14 May 1956, reaching 45.2 °C.
What is the coldest day in Vettavalam?
The coldest day measured in Vettavalam between 1940 and 2025 was 26 December 1941, at 12.9 °C.
Does it snow in Vettavalam?
Almost never: Vettavalam sees virtually no snow, with about 0 frost days per year.
Has the climate of Vettavalam warmed?
Yes: Vettavalam warmed by +0.9 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Vettavalam?
The wettest day measured in Vettavalam between 1940 and 2025 was 18 November 2021, with 188 mm of rain in 24 hours.
What was the windiest day in Vettavalam?
The windiest day measured in Vettavalam between 1940 and 2025 was 4 December 1993, with winds reaching 36.2 km/h.
What is the warmest month in Vettavalam?
The warmest month in Vettavalam is May (32.2 °C on average); the coldest is January (24.1 °C).
How much does it rain in Vettavalam?
Vettavalam receives on average 857 mm of precipitation per year, spread over about 120 rainy days.
Is it sunny in Vettavalam?
Vettavalam gets on average 10.1 hours of sunshine per day, roughly 3,687 hours per year over 1940-2025.
Are there tropical nights in Vettavalam?
Yes: Vettavalam has on average 322 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Vettavalam?
In Vettavalam, between 1940 and 2025, the highest apparent temperature reached 47.5 °C on 26 May 2019, and the lowest was 13.0 °C on 26 December 1941.
Compare Vettavalam with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Vettavalam