Alangāyam climate — normals and trends
Alangāyam (India) has a tropical savanna climate (Aw) under the Köppen-Geiger classification. Its mean annual temperature is 25.0 °C and it receives 1,142 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 (28.3 °C on average) and the coldest is January (21.3 °C). Rainfall peaks in October.
Alangāyam averages 0 frost days, 202 hot days (≥ 30 °C) and 137 rainy days per year.
Alangāyam has warmed by +1.0 °C between 1940 and 2025, or +0.12 °C per decade. This trend is statistically significant.
The hottest day of the period reached 41.3 °C (on 3 May 1946) and the coldest 9.6 °C (on 16 January 1940).
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
AlangāyamTamil Nadu
- coords
- 12.62°, 78.75°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
25.0°C
Average daily high
30.4°C
Average daily low
20.7°C
Annual rainfall
1,142mm
Sunshine / day
9.9h
Mean relative humidity
72%
Average peak wind
12.4km/h
Seasonal range
7.0°C
Frost days (< 0 °C)
0 d/yr
Hot days (≥ 30 °C)
202 d/yr
Rainy days (≥ 1 mm)
137 d/yr
Annual snowfall
0.0 cm
Average feels-like high
33.0 °C
Average feels-like low
23.1 °C
Average peak gust
39.2 km/h
Tropical nights (≥ 20 °C)
249 d/yr
Solar radiation
19.6 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.0 °C
since 1940
+0.1 °C per decade · r² = 0.36 · 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
41.3 °C
3 May 1946
Coldest day
9.6 °C
16 January 1940
Wettest day
168 mm
29 October 1991
Windiest day
30.6 km/h
15 July 1944
Strongest gust
101.2 km/h
12 July 1962
Hottest feels-like
44.3 °C
1 May 2024
Coldest feels-like
8.4 °C
16 January 1940
Sunniest day
12.5 h
22 May 1958
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 | 26.9 °C | -0.1 °C | 19 mm | +4 mm |
| Feb | 30.7 °C | +0.7 °C | 0 mm | -9 mm |
| Mar | 32.8 °C | -0.1 °C | 18 mm | -2 mm |
| Apr | 33.9 °C | -0.8 °C | 79 mm | +36 mm |
| May | 32.1 °C | -2.4 °C | 238 mm | +109 mm |
| Jun | 31.8 °C | -0.1 °C | 53 mm | -41 mm |
| Jul | 31.4 °C | +0.6 °C | 59 mm | -46 mm |
| Aug | 30.4 °C | -0.2 °C | 185 mm | +60 mm |
| Sep | 30.2 °C | -0.2 °C | 97 mm | -87 mm |
| Oct | 28.9 °C | +0.1 °C | 229 mm | +7 mm |
| Nov | 27.6 °C | +0.6 °C | 136 mm | -1 mm |
| Dec | 26.4 °C | +0.4 °C | 42 mm | -17 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 Alangāyam?
Alangāyam has a tropical savanna climate (Köppen Aw). Over 1940-2025, the average annual temperature is 25.0 °C and it receives 1,142 mm of precipitation per year.
What is the hottest day ever recorded in Alangāyam?
The hottest day measured in Alangāyam between 1940 and 2025 was 3 May 1946, reaching 41.3 °C.
What is the coldest day in Alangāyam?
The coldest day measured in Alangāyam between 1940 and 2025 was 16 January 1940, at 9.6 °C.
Does it snow in Alangāyam?
Almost never: Alangāyam sees virtually no snow, with about 0 frost days per year.
Has the climate of Alangāyam warmed?
Yes: Alangāyam warmed by +1.0 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Alangāyam?
The wettest day measured in Alangāyam between 1940 and 2025 was 29 October 1991, with 168 mm of rain in 24 hours.
What was the windiest day in Alangāyam?
The windiest day measured in Alangāyam between 1940 and 2025 was 15 July 1944, with winds reaching 30.6 km/h.
What is the warmest month in Alangāyam?
The warmest month in Alangāyam is May (28.3 °C on average); the coldest is January (21.3 °C).
How much does it rain in Alangāyam?
Alangāyam receives on average 1,142 mm of precipitation per year, spread over about 137 rainy days.
Is it sunny in Alangāyam?
Alangāyam gets on average 9.9 hours of sunshine per day, roughly 3,614 hours per year over 1940-2025.
Are there tropical nights in Alangāyam?
Yes: Alangāyam has on average 249 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Alangāyam?
In Alangāyam, between 1940 and 2025, the highest apparent temperature reached 44.3 °C on 1 May 2024, and the lowest was 8.4 °C on 16 January 1940.
Compare Alangāyam with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Alangāyam