Hatton climate — normals and trends
Hatton has a tropical rainforest climate, averaging 22.3 °C annually with 3,904 mm of rain per year.
Climate normals · ERA5
HattonCentral Province
- coords
- 6.89°, 80.60°
- period
- 1940–2025 · 86 yrs
The normals for this period
The average of every indicator across the whole window: temperature, water, sky, wind and notable days.
Mean daily temperature
22.3°C
Average daily high
25.9°C
Average daily low
19.7°C
Annual rainfall
3,904mm
Sunshine / day
9.9h
Mean relative humidity
87%
Average peak wind
8.9km/h
Seasonal range
1.6°C
Frost days (< 0 °C)
0 d/yr
Hot days (≥ 30 °C)
2 d/yr
Rainy days (≥ 1 mm)
310 d/yr
Annual snowfall
0.0 cm
Average feels-like high
30.2 °C
Average feels-like low
22.5 °C
Average peak gust
32.7 km/h
Tropical nights (≥ 20 °C)
164 d/yr
Solar radiation
18.1 MJ/m²
Has the climate changed?
What the yearly averages say about warming here, and whether the slope is statistically solid.
+1.5 °C
since 1940
+0.2 °C per decade · r² = 0.73 · 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).
Climate month by month
How an average year unfolds: when it rains, when it turns hot, when the sun is out.
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
The most extreme days ever measured here, then the year-by-year detail.
Hottest day
32.3 °C
27 February 1952
Coldest day
13.1 °C
11 February 2001
Wettest day
329 mm
18 October 2023
Windiest day
23.5 km/h
24 November 1978
Strongest gust
86.0 km/h
24 November 1978
Hottest feels-like
37.6 °C
27 April 2016
Coldest feels-like
11.8 °C
7 February 1944
Sunniest day
12.4 h
30 May 1945
Normals computed over complete calendar years 1940–2025.
A specific year
Pick a year and compare it with the normal: warmer, drier, more extreme?
Across the whole year
Month by month
| High | vs. normal | Precipitation | vs. normal | |
|---|---|---|---|---|
| Jan | 25.7 °C | 0.0 °C | 489 mm | +248 mm |
| Feb | 28.1 °C | +1.4 °C | 130 mm | -109 mm |
| Mar | 28.0 °C | +0.5 °C | 343 mm | +5 mm |
| Apr | 27.8 °C | +0.4 °C | 284 mm | -134 mm |
| May | 27.1 °C | +0.7 °C | 299 mm | -8 mm |
| Jun | 26.5 °C | +1.2 °C | 234 mm | -33 mm |
| Jul | 26.1 °C | +1.1 °C | 312 mm | +70 mm |
| Aug | 26.1 °C | +1.1 °C | 131 mm | -106 mm |
| Sep | 26.4 °C | +1.1 °C | 215 mm | -19 mm |
| Oct | 26.7 °C | +1.3 °C | 644 mm | +196 mm |
| Nov | 25.6 °C | +0.1 °C | 883 mm | +354 mm |
| Dec | 26.5 °C | +1.1 °C | 230 mm | -172 mm |
The year's extremes
What was the weather like that day?
The weather actually measured on a given date, anywhere in the covered window.
Climate at a glance
What these normals say about the place, in a few sentences, and the notions needed to read them.
Hatton (Sri Lanka) has a tropical rainforest climate (Af) under the Köppen-Geiger classification. Its mean annual temperature is 22.3 °C and it receives 3,904 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 (23.3 °C on average) and the coldest is January (21.7 °C). Rainfall peaks in November.
Hatton averages 0 frost days, 2 hot days (≥ 30 °C) and 310 rainy days per year.
Hatton has warmed by +1.5 °C between 1940 and 2025, or +0.18 °C per decade. This trend is statistically significant.
The hottest day of the period reached 32.3 °C (on 27 February 1952) and the coldest 13.1 °C (on 11 February 2001).
Data from ERA5 reanalysis (Copernicus Climate Change Service), redistributed under a CC-BY 4.0 licence. Normals are recomputed whenever the archive is updated.
Compare Hatton with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Hatton
Other cities — Sri Lanka
Frequently asked questions
What is the climate of Hatton?
Hatton has a tropical rainforest climate (Köppen Af). Over 1940-2025, the average annual temperature is 22.3 °C and it receives 3,904 mm of precipitation per year.
What is the hottest day ever recorded in Hatton?
The hottest day measured in Hatton between 1940 and 2025 was 27 February 1952, reaching 32.3 °C.
What is the coldest day in Hatton?
The coldest day measured in Hatton between 1940 and 2025 was 11 February 2001, at 13.1 °C.
Does it snow in Hatton?
Almost never: Hatton sees virtually no snow, with about 0 frost days per year.
Has the climate of Hatton warmed?
Yes: Hatton warmed by +1.5 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Hatton?
The wettest day measured in Hatton between 1940 and 2025 was 18 October 2023, with 329 mm of rain in 24 hours.
What was the windiest day in Hatton?
The windiest day measured in Hatton between 1940 and 2025 was 24 November 1978, with winds reaching 23.5 km/h.
What is the warmest month in Hatton?
The warmest month in Hatton is April (23.3 °C on average); the coldest is January (21.7 °C).
How much does it rain in Hatton?
Hatton receives on average 3,904 mm of precipitation per year, spread over about 310 rainy days.
Is it sunny in Hatton?
Hatton gets on average 9.9 hours of sunshine per day, roughly 3,614 hours per year over 1940-2025.
Are there tropical nights in Hatton?
Yes: Hatton has on average 164 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Hatton?
In Hatton, between 1940 and 2025, the highest apparent temperature reached 37.6 °C on 27 April 2016, and the lowest was 11.8 °C on 7 February 1944.
These forecasts and records come from our own weather API. Developer documentation →