Erawan climate — normals and trends
Erawan (Thailand) has a tropical savanna climate (Aw) under the Köppen-Geiger classification. Its mean annual temperature is 25.8 °C and it receives 1,241 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 (28.7 °C on average) and the coldest is December (21.4 °C). Rainfall peaks in September.
Erawan averages 0 frost days, 237 hot days (≥ 30 °C) and 153 rainy days per year.
Erawan has warmed by +1.8 °C between 1940 and 2025, or +0.21 °C per decade. This trend is statistically significant.
The hottest day of the period reached 41.5 °C (on 12 April 2016) and the coldest 4.7 °C (on 2 January 1974).
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
ErawanLoei
- coords
- 17.30°, 101.95°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
25.8°C
Average daily high
31.1°C
Average daily low
21.6°C
Annual rainfall
1,241mm
Sunshine / day
9.7h
Mean relative humidity
73%
Average peak wind
9.2km/h
Seasonal range
7.3°C
Frost days (< 0 °C)
0 d/yr
Hot days (≥ 30 °C)
237 d/yr
Rainy days (≥ 1 mm)
153 d/yr
Annual snowfall
0.0 cm
Average feels-like high
35.1 °C
Average feels-like low
24.7 °C
Average peak gust
26.1 km/h
Tropical nights (≥ 20 °C)
263 d/yr
Solar radiation
18.0 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.8 °C
since 1940
+0.2 °C per decade · r² = 0.66 · 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
41.5 °C
12 April 2016
Coldest day
4.7 °C
2 January 1974
Wettest day
159 mm
18 October 1998
Windiest day
27.5 km/h
17 September 1962
Strongest gust
65.2 km/h
22 October 1952
Hottest feels-like
47.2 °C
15 April 1953
Coldest feels-like
1.9 °C
2 January 1974
Sunniest day
12.8 h
26 June 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 | 27.7 °C | -0.8 °C | 0 mm | -9 mm |
| Feb | 31.0 °C | -0.2 °C | 47 mm | +33 mm |
| Mar | 33.0 °C | -0.7 °C | 6 mm | -31 mm |
| Apr | 34.9 °C | +0.3 °C | 53 mm | -21 mm |
| May | 33.3 °C | +0.2 °C | 190 mm | +17 mm |
| Jun | 32.9 °C | +0.5 °C | 146 mm | -2 mm |
| Jul | 31.5 °C | -0.3 °C | 165 mm | +11 mm |
| Aug | 32.3 °C | +1.1 °C | 270 mm | +57 mm |
| Sep | 31.4 °C | +0.8 °C | 214 mm | -49 mm |
| Oct | 31.0 °C | +1.1 °C | 84 mm | -40 mm |
| Nov | 27.7 °C | -1.0 °C | 96 mm | +70 mm |
| Dec | 28.1 °C | +0.7 °C | 12 mm | +6 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 Erawan?
Erawan has a tropical savanna climate (Köppen Aw). Over 1940-2025, the average annual temperature is 25.8 °C and it receives 1,241 mm of precipitation per year.
What is the hottest day ever recorded in Erawan?
The hottest day measured in Erawan between 1940 and 2025 was 12 April 2016, reaching 41.5 °C.
What is the coldest day in Erawan?
The coldest day measured in Erawan between 1940 and 2025 was 2 January 1974, at 4.7 °C.
Does it snow in Erawan?
Almost never: Erawan sees virtually no snow, with about 0 frost days per year.
Has the climate of Erawan warmed?
Yes: Erawan warmed by +1.8 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Erawan?
The wettest day measured in Erawan between 1940 and 2025 was 18 October 1998, with 159 mm of rain in 24 hours.
What was the windiest day in Erawan?
The windiest day measured in Erawan between 1940 and 2025 was 17 September 1962, with winds reaching 27.5 km/h.
What is the warmest month in Erawan?
The warmest month in Erawan is April (28.7 °C on average); the coldest is December (21.4 °C).
How much does it rain in Erawan?
Erawan receives on average 1,241 mm of precipitation per year, spread over about 153 rainy days.
Is it sunny in Erawan?
Erawan gets on average 9.7 hours of sunshine per day, roughly 3,540 hours per year over 1940-2025.
Are there tropical nights in Erawan?
Yes: Erawan has on average 263 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Erawan?
In Erawan, between 1940 and 2025, the highest apparent temperature reached 47.2 °C on 15 April 1953, and the lowest was 1.9 °C on 2 January 1974.
Compare Erawan with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Erawan