Mettur climate — normals and trends
Mettur (India) has a tropical savanna climate (Aw) under the Köppen-Geiger classification. Its mean annual temperature is 26.5 °C and it receives 897 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 April (29.8 °C on average) and the coldest is December (23.6 °C). Rainfall peaks in October.
Mettur averages 0 frost days, 262 hot days (≥ 30 °C) and 138 rainy days per year.
Mettur has warmed by +1.6 °C between 1940 and 2025, or +0.18 °C per decade. This trend is statistically significant.
The hottest day of the period reached 40.8 °C (on 3 May 1946) and the coldest 12.4 °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
MetturTamil Nadu
- coords
- 11.79°, 77.80°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
26.5°C
Average daily high
31.9°C
Average daily low
22.2°C
Annual rainfall
897mm
Sunshine / day
10.2h
Mean relative humidity
67%
Average peak wind
9.6km/h
Seasonal range
6.2°C
Frost days (< 0 °C)
0 d/yr
Hot days (≥ 30 °C)
262 d/yr
Rainy days (≥ 1 mm)
138 d/yr
Annual snowfall
0.0 cm
Average feels-like high
34.9 °C
Average feels-like low
25.2 °C
Average peak gust
30.6 km/h
Tropical nights (≥ 20 °C)
309 d/yr
Solar radiation
19.6 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.6 °C
since 1940
+0.2 °C per decade · r² = 0.57 · 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
40.8 °C
3 May 1946
Coldest day
12.4 °C
26 December 1941
Wettest day
110 mm
6 December 1997
Windiest day
26.9 km/h
14 August 1978
Strongest gust
73.8 km/h
23 July 1989
Hottest feels-like
45.7 °C
23 May 2014
Coldest feels-like
12.2 °C
11 December 1981
Sunniest day
12.3 h
17 May 1941
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 | 28.6 °C | -1.0 °C | 7 mm | -2 mm |
| Feb | 32.2 °C | -0.1 °C | 1 mm | -6 mm |
| Mar | 34.0 °C | -0.8 °C | 16 mm | +2 mm |
| Apr | 34.4 °C | -1.6 °C | 84 mm | +47 mm |
| May | 33.3 °C | -2.4 °C | 157 mm | +70 mm |
| Jun | 32.4 °C | -0.1 °C | 80 mm | -26 mm |
| Jul | 31.5 °C | +0.3 °C | 103 mm | -11 mm |
| Aug | 31.1 °C | -0.2 °C | 127 mm | +25 mm |
| Sep | 31.7 °C | 0.0 °C | 81 mm | -35 mm |
| Oct | 30.5 °C | 0.0 °C | 182 mm | +23 mm |
| Nov | 30.1 °C | +1.1 °C | 59 mm | -43 mm |
| Dec | 29.3 °C | +0.8 °C | 19 mm | -26 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 Mettur?
Mettur has a tropical savanna climate (Köppen Aw). Over 1940-2025, the average annual temperature is 26.5 °C and it receives 897 mm of precipitation per year.
What is the hottest day ever recorded in Mettur?
The hottest day measured in Mettur between 1940 and 2025 was 3 May 1946, reaching 40.8 °C.
What is the coldest day in Mettur?
The coldest day measured in Mettur between 1940 and 2025 was 26 December 1941, at 12.4 °C.
Does it snow in Mettur?
Almost never: Mettur sees virtually no snow, with about 0 frost days per year.
Has the climate of Mettur warmed?
Yes: Mettur warmed by +1.6 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Mettur?
The wettest day measured in Mettur between 1940 and 2025 was 6 December 1997, with 110 mm of rain in 24 hours.
What was the windiest day in Mettur?
The windiest day measured in Mettur between 1940 and 2025 was 14 August 1978, with winds reaching 26.9 km/h.
What is the warmest month in Mettur?
The warmest month in Mettur is April (29.8 °C on average); the coldest is December (23.6 °C).
How much does it rain in Mettur?
Mettur receives on average 897 mm of precipitation per year, spread over about 138 rainy days.
Is it sunny in Mettur?
Mettur gets on average 10.2 hours of sunshine per day, roughly 3,723 hours per year over 1940-2025.
Are there tropical nights in Mettur?
Yes: Mettur has on average 309 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Mettur?
In Mettur, between 1940 and 2025, the highest apparent temperature reached 45.7 °C on 23 May 2014, and the lowest was 12.2 °C on 11 December 1981.
Compare Mettur with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Mettur