Kaset Sombun climate — normals and trends
Kaset Sombun (Thailand) has a tropical savanna climate (Aw) under the Köppen-Geiger classification. Its mean annual temperature is 24.9 °C and it receives 1,378 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 (27.3 °C on average) and the coldest is December (20.8 °C). Rainfall peaks in September.
Kaset Sombun averages 0 frost days, 188 hot days (≥ 30 °C) and 175 rainy days per year.
Kaset Sombun 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 38.9 °C (on 18 April 1955) and the coldest 4.1 °C (on 12 January 1955).
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
Kaset SombunChaiyaphum
- coords
- 16.28°, 101.95°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
24.9°C
Average daily high
29.9°C
Average daily low
21.0°C
Annual rainfall
1,378mm
Sunshine / day
10.0h
Mean relative humidity
76%
Average peak wind
10.9km/h
Seasonal range
6.5°C
Frost days (< 0 °C)
0 d/yr
Hot days (≥ 30 °C)
188 d/yr
Rainy days (≥ 1 mm)
175 d/yr
Annual snowfall
0.0 cm
Average feels-like high
33.7 °C
Average feels-like low
23.7 °C
Average peak gust
31.4 km/h
Tropical nights (≥ 20 °C)
259 d/yr
Solar radiation
18.4 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.5 °C
since 1940
+0.2 °C per decade · r² = 0.63 · 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
38.9 °C
18 April 1955
Coldest day
4.1 °C
12 January 1955
Wettest day
140 mm
23 August 2000
Windiest day
26.7 km/h
7 June 1946
Strongest gust
79.2 km/h
8 October 2020
Hottest feels-like
46.0 °C
21 March 1953
Coldest feels-like
1.1 °C
12 January 1955
Sunniest day
12.7 h
6 July 2024
Normals computed over complete calendar years 1940–2025.
A specific year
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Across the whole year
Month by month
| High | vs. normal | Precipitation | vs. normal | |
|---|---|---|---|---|
| Jan | 26.7 °C | -1.2 °C | 0 mm | -12 mm |
| Feb | 30.1 °C | -0.3 °C | 22 mm | -0 mm |
| Mar | 32.2 °C | -0.2 °C | 25 mm | -36 mm |
| Apr | 33.2 °C | +0.4 °C | 90 mm | -24 mm |
| May | 31.3 °C | -0.2 °C | 290 mm | +101 mm |
| Jun | 31.2 °C | +0.3 °C | 162 mm | +21 mm |
| Jul | 30.0 °C | -0.3 °C | 143 mm | -15 mm |
| Aug | 30.9 °C | +1.0 °C | 250 mm | +46 mm |
| Sep | 30.1 °C | +0.6 °C | 248 mm | -36 mm |
| Oct | 29.7 °C | +1.0 °C | 155 mm | +3 mm |
| Nov | 26.5 °C | -1.1 °C | 93 mm | +59 mm |
| Dec | 27.5 °C | +0.9 °C | 17 mm | +11 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 Kaset Sombun?
Kaset Sombun has a tropical savanna climate (Köppen Aw). Over 1940-2025, the average annual temperature is 24.9 °C and it receives 1,378 mm of precipitation per year.
What is the hottest day ever recorded in Kaset Sombun?
The hottest day measured in Kaset Sombun between 1940 and 2025 was 18 April 1955, reaching 38.9 °C.
What is the coldest day in Kaset Sombun?
The coldest day measured in Kaset Sombun between 1940 and 2025 was 12 January 1955, at 4.1 °C.
Does it snow in Kaset Sombun?
Almost never: Kaset Sombun sees virtually no snow, with about 0 frost days per year.
Has the climate of Kaset Sombun warmed?
Yes: Kaset Sombun warmed by +1.5 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Kaset Sombun?
The wettest day measured in Kaset Sombun between 1940 and 2025 was 23 August 2000, with 140 mm of rain in 24 hours.
What was the windiest day in Kaset Sombun?
The windiest day measured in Kaset Sombun between 1940 and 2025 was 7 June 1946, with winds reaching 26.7 km/h.
What is the warmest month in Kaset Sombun?
The warmest month in Kaset Sombun is April (27.3 °C on average); the coldest is December (20.8 °C).
How much does it rain in Kaset Sombun?
Kaset Sombun receives on average 1,378 mm of precipitation per year, spread over about 175 rainy days.
Is it sunny in Kaset Sombun?
Kaset Sombun gets on average 10.0 hours of sunshine per day, roughly 3,650 hours per year over 1940-2025.
Are there tropical nights in Kaset Sombun?
Yes: Kaset Sombun has on average 259 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Kaset Sombun?
In Kaset Sombun, between 1940 and 2025, the highest apparent temperature reached 46.0 °C on 21 March 1953, and the lowest was 1.1 °C on 12 January 1955.
Compare Kaset Sombun with another city
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Nearby cities
The climate around Kaset Sombun