Mannachanallur climate — normals and trends
Mannachanallur (India) has a tropical savanna climate (Aw) under the Köppen-Geiger classification. Its mean annual temperature is 28.6 °C and it receives 768 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 (31.9 °C on average) and the coldest is December (24.9 °C). Rainfall peaks in October.
Mannachanallur averages 0 frost days, 306 hot days (≥ 30 °C) and 114 rainy days per year.
Mannachanallur has warmed by +1.2 °C between 1940 and 2025, or +0.15 °C per decade. This trend is statistically significant.
The hottest day of the period reached 43.7 °C (on 10 May 1973) and the coldest 14.2 °C (on 28 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
MannachanallurTamil Nadu
- coords
- 10.91°, 78.70°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
28.6°C
Average daily high
34.1°C
Average daily low
24.3°C
Annual rainfall
768mm
Sunshine / day
10.1h
Mean relative humidity
65%
Average peak wind
15.8km/h
Seasonal range
7.0°C
Frost days (< 0 °C)
0 d/yr
Hot days (≥ 30 °C)
306 d/yr
Rainy days (≥ 1 mm)
114 d/yr
Annual snowfall
0.0 cm
Average feels-like high
36.9 °C
Average feels-like low
27.5 °C
Average peak gust
35.7 km/h
Tropical nights (≥ 20 °C)
340 d/yr
Solar radiation
19.8 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.2 °C
since 1940
+0.2 °C per decade · r² = 0.51 · 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
43.7 °C
10 May 1973
Coldest day
14.2 °C
28 December 1941
Wettest day
133 mm
23 December 1983
Windiest day
37.9 km/h
14 June 1996
Strongest gust
87.8 km/h
23 July 1989
Hottest feels-like
47.6 °C
10 May 2013
Coldest feels-like
14.7 °C
26 December 1941
Sunniest day
12.4 h
27 May 1981
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 | 29.5 °C | -0.7 °C | 14 mm | -0 mm |
| Feb | 33.2 °C | 0.0 °C | 3 mm | -6 mm |
| Mar | 35.2 °C | -1.0 °C | 30 mm | +13 mm |
| Apr | 37.7 °C | -0.3 °C | 22 mm | -13 mm |
| May | 36.0 °C | -2.4 °C | 111 mm | +54 mm |
| Jun | 36.4 °C | -0.2 °C | 23 mm | -24 mm |
| Jul | 36.1 °C | +0.8 °C | 36 mm | -21 mm |
| Aug | 35.6 °C | +0.4 °C | 50 mm | -19 mm |
| Sep | 35.7 °C | +0.6 °C | 65 mm | -37 mm |
| Oct | 32.3 °C | -0.1 °C | 286 mm | +121 mm |
| Nov | 30.2 °C | +0.2 °C | 147 mm | +14 mm |
| Dec | 29.3 °C | +0.2 °C | 24 mm | -42 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 Mannachanallur?
Mannachanallur has a tropical savanna climate (Köppen Aw). Over 1940-2025, the average annual temperature is 28.6 °C and it receives 768 mm of precipitation per year.
What is the hottest day ever recorded in Mannachanallur?
The hottest day measured in Mannachanallur between 1940 and 2025 was 10 May 1973, reaching 43.7 °C.
What is the coldest day in Mannachanallur?
The coldest day measured in Mannachanallur between 1940 and 2025 was 28 December 1941, at 14.2 °C.
Does it snow in Mannachanallur?
Almost never: Mannachanallur sees virtually no snow, with about 0 frost days per year.
Has the climate of Mannachanallur warmed?
Yes: Mannachanallur warmed by +1.2 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Mannachanallur?
The wettest day measured in Mannachanallur between 1940 and 2025 was 23 December 1983, with 133 mm of rain in 24 hours.
What was the windiest day in Mannachanallur?
The windiest day measured in Mannachanallur between 1940 and 2025 was 14 June 1996, with winds reaching 37.9 km/h.
What is the warmest month in Mannachanallur?
The warmest month in Mannachanallur is May (31.9 °C on average); the coldest is December (24.9 °C).
How much does it rain in Mannachanallur?
Mannachanallur receives on average 768 mm of precipitation per year, spread over about 114 rainy days.
Is it sunny in Mannachanallur?
Mannachanallur gets on average 10.1 hours of sunshine per day, roughly 3,687 hours per year over 1940-2025.
Are there tropical nights in Mannachanallur?
Yes: Mannachanallur has on average 340 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Mannachanallur?
In Mannachanallur, between 1940 and 2025, the highest apparent temperature reached 47.6 °C on 10 May 2013, and the lowest was 14.7 °C on 26 December 1941.
Compare Mannachanallur with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Mannachanallur