Thiruvaiyaru climate — normals and trends
Thiruvaiyaru (India) has a tropical savanna climate (Aw) under the Köppen-Geiger classification. Its mean annual temperature is 28.7 °C and it receives 775 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 (32.1 °C on average) and the coldest is January (24.9 °C). Rainfall peaks in October.
Thiruvaiyaru averages 0 frost days, 302 hot days (≥ 30 °C) and 115 rainy days per year.
Thiruvaiyaru 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 43.9 °C (on 10 May 1973) and the coldest 14.7 °C (on 29 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
ThiruvaiyaruTamil Nadu
- coords
- 10.88°, 79.10°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
28.7°C
Average daily high
34.1°C
Average daily low
24.6°C
Annual rainfall
775mm
Sunshine / day
10.1h
Mean relative humidity
66%
Average peak wind
16.2km/h
Seasonal range
7.2°C
Frost days (< 0 °C)
0 d/yr
Hot days (≥ 30 °C)
302 d/yr
Rainy days (≥ 1 mm)
115 d/yr
Annual snowfall
0.0 cm
Average feels-like high
37.0 °C
Average feels-like low
27.8 °C
Average peak gust
35.4 km/h
Tropical nights (≥ 20 °C)
345 d/yr
Solar radiation
19.4 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.1 °C
since 1940
+0.1 °C per decade · r² = 0.48 · 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
43.9 °C
10 May 1973
Coldest day
14.7 °C
29 December 1941
Wettest day
141 mm
22 December 1983
Windiest day
36.7 km/h
14 June 1996
Strongest gust
80.3 km/h
12 July 1943
Hottest feels-like
47.8 °C
17 May 2013
Coldest feels-like
14.9 °C
30 December 1941
Sunniest day
12.5 h
31 May 1948
Normals computed over complete calendar years 1940–2025.
A specific year
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Across the whole year
Month by month
| High | vs. normal | Precipitation | vs. normal | |
|---|---|---|---|---|
| Jan | 29.6 °C | -0.3 °C | 24 mm | +5 mm |
| Feb | 32.8 °C | 0.0 °C | 4 mm | -6 mm |
| Mar | 34.5 °C | -1.3 °C | 35 mm | +18 mm |
| Apr | 37.0 °C | -0.7 °C | 22 mm | -8 mm |
| May | 35.8 °C | -2.6 °C | 128 mm | +75 mm |
| Jun | 36.2 °C | -0.7 °C | 24 mm | -18 mm |
| Jul | 36.2 °C | +0.5 °C | 41 mm | -13 mm |
| Aug | 35.4 °C | -0.1 °C | 55 mm | -11 mm |
| Sep | 35.3 °C | +0.1 °C | 60 mm | -33 mm |
| Oct | 32.3 °C | -0.2 °C | 204 mm | +45 mm |
| Nov | 30.1 °C | +0.2 °C | 183 mm | +34 mm |
| Dec | 29.2 °C | +0.3 °C | 27 mm | -55 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 Thiruvaiyaru?
Thiruvaiyaru has a tropical savanna climate (Köppen Aw). Over 1940-2025, the average annual temperature is 28.7 °C and it receives 775 mm of precipitation per year.
What is the hottest day ever recorded in Thiruvaiyaru?
The hottest day measured in Thiruvaiyaru between 1940 and 2025 was 10 May 1973, reaching 43.9 °C.
What is the coldest day in Thiruvaiyaru?
The coldest day measured in Thiruvaiyaru between 1940 and 2025 was 29 December 1941, at 14.7 °C.
Does it snow in Thiruvaiyaru?
Almost never: Thiruvaiyaru sees virtually no snow, with about 0 frost days per year.
Has the climate of Thiruvaiyaru warmed?
Yes: Thiruvaiyaru warmed by +1.1 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Thiruvaiyaru?
The wettest day measured in Thiruvaiyaru between 1940 and 2025 was 22 December 1983, with 141 mm of rain in 24 hours.
What was the windiest day in Thiruvaiyaru?
The windiest day measured in Thiruvaiyaru between 1940 and 2025 was 14 June 1996, with winds reaching 36.7 km/h.
What is the warmest month in Thiruvaiyaru?
The warmest month in Thiruvaiyaru is May (32.1 °C on average); the coldest is January (24.9 °C).
How much does it rain in Thiruvaiyaru?
Thiruvaiyaru receives on average 775 mm of precipitation per year, spread over about 115 rainy days.
Is it sunny in Thiruvaiyaru?
Thiruvaiyaru gets on average 10.1 hours of sunshine per day, roughly 3,687 hours per year over 1940-2025.
Are there tropical nights in Thiruvaiyaru?
Yes: Thiruvaiyaru has on average 345 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Thiruvaiyaru?
In Thiruvaiyaru, between 1940 and 2025, the highest apparent temperature reached 47.8 °C on 17 May 2013, and the lowest was 14.9 °C on 30 December 1941.
Compare Thiruvaiyaru with another city
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Nearby cities
The climate around Thiruvaiyaru