Chengam climate — normals and trends
Chengam (India) has a tropical savanna climate (Aw) under the Köppen-Geiger classification. Its mean annual temperature is 26.6 °C and it receives 799 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 (30.1 °C on average) and the coldest is December (22.7 °C). Rainfall peaks in October.
Chengam averages 0 frost days, 258 hot days (≥ 30 °C) and 115 rainy days per year.
Chengam has warmed by +1.1 °C between 1940 and 2025, or +0.13 °C per decade. This trend is statistically significant.
The hottest day of the period reached 42.2 °C (on 3 May 1946) and the coldest 11.7 °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
ChengamTamil Nadu
- coords
- 12.31°, 78.79°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
26.6°C
Average daily high
32.1°C
Average daily low
22.3°C
Annual rainfall
799mm
Sunshine / day
9.9h
Mean relative humidity
68%
Average peak wind
14.8km/h
Seasonal range
7.4°C
Frost days (< 0 °C)
0 d/yr
Hot days (≥ 30 °C)
258 d/yr
Rainy days (≥ 1 mm)
115 d/yr
Annual snowfall
0.0 cm
Average feels-like high
34.4 °C
Average feels-like low
25.0 °C
Average peak gust
36.8 km/h
Tropical nights (≥ 20 °C)
289 d/yr
Solar radiation
19.6 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.1 °C
since 1940
+0.1 °C per decade · r² = 0.40 · 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
42.2 °C
3 May 1946
Coldest day
11.7 °C
26 December 1941
Wettest day
215 mm
29 October 1991
Windiest day
35.1 km/h
2 July 2006
Strongest gust
90.4 km/h
27 July 1991
Hottest feels-like
45.6 °C
1 May 2024
Coldest feels-like
11.2 °C
26 December 1941
Sunniest day
12.5 h
23 May 1950
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 | 27.8 °C | -0.7 °C | 17 mm | +3 mm |
| Feb | 31.6 °C | +0.1 °C | 0 mm | -7 mm |
| Mar | 33.7 °C | -0.6 °C | 18 mm | +4 mm |
| Apr | 35.5 °C | -0.6 °C | 33 mm | +7 mm |
| May | 33.8 °C | -2.5 °C | 151 mm | +72 mm |
| Jun | 33.7 °C | -0.4 °C | 39 mm | -25 mm |
| Jul | 33.7 °C | +0.8 °C | 34 mm | -35 mm |
| Aug | 32.5 °C | -0.2 °C | 123 mm | +42 mm |
| Sep | 32.0 °C | -0.5 °C | 88 mm | -26 mm |
| Oct | 30.3 °C | -0.1 °C | 164 mm | +7 mm |
| Nov | 29.0 °C | +0.7 °C | 101 mm | -16 mm |
| Dec | 27.5 °C | +0.2 °C | 37 mm | -21 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 Chengam?
Chengam has a tropical savanna climate (Köppen Aw). Over 1940-2025, the average annual temperature is 26.6 °C and it receives 799 mm of precipitation per year.
What is the hottest day ever recorded in Chengam?
The hottest day measured in Chengam between 1940 and 2025 was 3 May 1946, reaching 42.2 °C.
What is the coldest day in Chengam?
The coldest day measured in Chengam between 1940 and 2025 was 26 December 1941, at 11.7 °C.
Does it snow in Chengam?
Almost never: Chengam sees virtually no snow, with about 0 frost days per year.
Has the climate of Chengam warmed?
Yes: Chengam warmed by +1.1 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Chengam?
The wettest day measured in Chengam between 1940 and 2025 was 29 October 1991, with 215 mm of rain in 24 hours.
What was the windiest day in Chengam?
The windiest day measured in Chengam between 1940 and 2025 was 2 July 2006, with winds reaching 35.1 km/h.
What is the warmest month in Chengam?
The warmest month in Chengam is May (30.1 °C on average); the coldest is December (22.7 °C).
How much does it rain in Chengam?
Chengam receives on average 799 mm of precipitation per year, spread over about 115 rainy days.
Is it sunny in Chengam?
Chengam gets on average 9.9 hours of sunshine per day, roughly 3,614 hours per year over 1940-2025.
Are there tropical nights in Chengam?
Yes: Chengam has on average 289 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Chengam?
In Chengam, between 1940 and 2025, the highest apparent temperature reached 45.6 °C on 1 May 2024, and the lowest was 11.2 °C on 26 December 1941.
Compare Chengam with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Chengam