Galle climate — normals and trends
Galle (Sri Lanka) has a tropical monsoon climate (Am) under the Köppen-Geiger classification. Its mean annual temperature is 26.5 °C and it receives 2,251 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 (27.4 °C on average) and the coldest is January (26.0 °C). Rainfall peaks in May.
Galle averages 0 frost days, 4 hot days (≥ 30 °C) and 278 rainy days per year.
Galle 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 32.0 °C (on 26 February 2024) and the coldest 22.1 °C (on 24 December 1971).
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
GalleSouthern Province
- coords
- 6.05°, 80.21°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
26.5°C
Average daily high
27.7°C
Average daily low
25.4°C
Annual rainfall
2,251mm
Sunshine / day
10.4h
Mean relative humidity
84%
Average peak wind
19.6km/h
Seasonal range
1.4°C
Frost days (< 0 °C)
0 d/yr
Hot days (≥ 30 °C)
4 d/yr
Rainy days (≥ 1 mm)
278 d/yr
Annual snowfall
0.0 cm
Average feels-like high
32.6 °C
Average feels-like low
28.9 °C
Average peak gust
31.4 km/h
Tropical nights (≥ 20 °C)
365 d/yr
Solar radiation
19.9 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.0 °C
since 1940
+0.1 °C per decade · r² = 0.69 · 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
32.0 °C
26 February 2024
Coldest day
22.1 °C
24 December 1971
Wettest day
147 mm
27 November 2025
Windiest day
49.9 km/h
1 June 1991
Strongest gust
78.5 km/h
13 June 1996
Hottest feels-like
39.6 °C
26 March 2014
Coldest feels-like
19.8 °C
13 January 2011
Sunniest day
12.3 h
21 May 1953
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 | 27.6 °C | +0.1 °C | 307 mm | +236 mm |
| Feb | 29.0 °C | +1.0 °C | 64 mm | +12 mm |
| Mar | 29.0 °C | +0.5 °C | 119 mm | +45 mm |
| Apr | 28.9 °C | +0.3 °C | 220 mm | +78 mm |
| May | 29.0 °C | +0.7 °C | 236 mm | -67 mm |
| Jun | 28.4 °C | +0.7 °C | 181 mm | -91 mm |
| Jul | 27.9 °C | +0.6 °C | 148 mm | -77 mm |
| Aug | 27.8 °C | +0.6 °C | 98 mm | -134 mm |
| Sep | 28.2 °C | +1.0 °C | 171 mm | -79 mm |
| Oct | 28.2 °C | +0.9 °C | 274 mm | +14 mm |
| Nov | 27.9 °C | +0.4 °C | 471 mm | +247 mm |
| Dec | 27.8 °C | +0.3 °C | 76 mm | -70 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 Galle?
Galle has a tropical monsoon climate (Köppen Am). Over 1940-2025, the average annual temperature is 26.5 °C and it receives 2,251 mm of precipitation per year.
What is the hottest day ever recorded in Galle?
The hottest day measured in Galle between 1940 and 2025 was 26 February 2024, reaching 32.0 °C.
What is the coldest day in Galle?
The coldest day measured in Galle between 1940 and 2025 was 24 December 1971, at 22.1 °C.
Does it snow in Galle?
Almost never: Galle sees virtually no snow, with about 0 frost days per year.
Has the climate of Galle warmed?
Yes: Galle warmed by +1.0 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Galle?
The wettest day measured in Galle between 1940 and 2025 was 27 November 2025, with 147 mm of rain in 24 hours.
What was the windiest day in Galle?
The windiest day measured in Galle between 1940 and 2025 was 1 June 1991, with winds reaching 49.9 km/h.
What is the warmest month in Galle?
The warmest month in Galle is April (27.4 °C on average); the coldest is January (26.0 °C).
How much does it rain in Galle?
Galle receives on average 2,251 mm of precipitation per year, spread over about 278 rainy days.
Is it sunny in Galle?
Galle gets on average 10.4 hours of sunshine per day, roughly 3,796 hours per year over 1940-2025.
Are there tropical nights in Galle?
Yes: Galle has on average 365 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Galle?
In Galle, between 1940 and 2025, the highest apparent temperature reached 39.6 °C on 26 March 2014, and the lowest was 19.8 °C on 13 January 2011.
Compare Galle with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Galle