Chum Phae climate — normals and trends
Chum Phae (Thailand) has a tropical savanna climate (Aw) under the Köppen-Geiger classification. Its mean annual temperature is 25.6 °C and it receives 1,136 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 (28.2 °C on average) and the coldest is December (21.2 °C). Rainfall peaks in September.
Chum Phae averages 0 frost days, 231 hot days (≥ 30 °C) and 159 rainy days per year.
Chum Phae has warmed by +1.6 °C between 1940 and 2025, or +0.18 °C per decade. This trend is statistically significant.
The hottest day of the period reached 40.5 °C (on 14 April 1983) and the coldest 3.9 °C (on 25 December 1999).
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
Chum PhaeKhon Kaen
- coords
- 16.54°, 102.10°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
25.6°C
Average daily high
30.8°C
Average daily low
21.5°C
Annual rainfall
1,136mm
Sunshine / day
9.9h
Mean relative humidity
73%
Average peak wind
9.6km/h
Seasonal range
7.0°C
Frost days (< 0 °C)
0 d/yr
Hot days (≥ 30 °C)
231 d/yr
Rainy days (≥ 1 mm)
159 d/yr
Annual snowfall
0.0 cm
Average feels-like high
34.7 °C
Average feels-like low
24.5 °C
Average peak gust
28.2 km/h
Tropical nights (≥ 20 °C)
265 d/yr
Solar radiation
18.2 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.6 °C
since 1940
+0.2 °C per decade · r² = 0.56 · 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
40.5 °C
14 April 1983
Coldest day
3.9 °C
25 December 1999
Wettest day
144 mm
18 August 1991
Windiest day
25.3 km/h
7 June 1946
Strongest gust
67.7 km/h
22 October 2001
Hottest feels-like
46.7 °C
15 April 1953
Coldest feels-like
0.9 °C
2 January 1974
Sunniest day
12.7 h
6 July 2024
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 | 27.3 °C | -1.1 °C | 0 mm | -11 mm |
| Feb | 30.5 °C | -0.5 °C | 35 mm | +17 mm |
| Mar | 32.6 °C | -0.6 °C | 17 mm | -31 mm |
| Apr | 34.1 °C | +0.1 °C | 65 mm | -22 mm |
| May | 32.4 °C | -0.4 °C | 233 mm | +79 mm |
| Jun | 32.4 °C | 0.0 °C | 127 mm | +9 mm |
| Jul | 31.3 °C | -0.6 °C | 132 mm | +1 mm |
| Aug | 32.2 °C | +1.0 °C | 204 mm | +32 mm |
| Sep | 31.0 °C | +0.6 °C | 179 mm | -61 mm |
| Oct | 30.5 °C | +1.1 °C | 110 mm | -16 mm |
| Nov | 27.2 °C | -1.1 °C | 81 mm | +53 mm |
| Dec | 28.4 °C | +1.2 °C | 9 mm | +4 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 Chum Phae?
Chum Phae has a tropical savanna climate (Köppen Aw). Over 1940-2025, the average annual temperature is 25.6 °C and it receives 1,136 mm of precipitation per year.
What is the hottest day ever recorded in Chum Phae?
The hottest day measured in Chum Phae between 1940 and 2025 was 14 April 1983, reaching 40.5 °C.
What is the coldest day in Chum Phae?
The coldest day measured in Chum Phae between 1940 and 2025 was 25 December 1999, at 3.9 °C.
Does it snow in Chum Phae?
Almost never: Chum Phae sees virtually no snow, with about 0 frost days per year.
Has the climate of Chum Phae warmed?
Yes: Chum Phae warmed by +1.6 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Chum Phae?
The wettest day measured in Chum Phae between 1940 and 2025 was 18 August 1991, with 144 mm of rain in 24 hours.
What was the windiest day in Chum Phae?
The windiest day measured in Chum Phae between 1940 and 2025 was 7 June 1946, with winds reaching 25.3 km/h.
What is the warmest month in Chum Phae?
The warmest month in Chum Phae is April (28.2 °C on average); the coldest is December (21.2 °C).
How much does it rain in Chum Phae?
Chum Phae receives on average 1,136 mm of precipitation per year, spread over about 159 rainy days.
Is it sunny in Chum Phae?
Chum Phae gets on average 9.9 hours of sunshine per day, roughly 3,614 hours per year over 1940-2025.
Are there tropical nights in Chum Phae?
Yes: Chum Phae has on average 265 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Chum Phae?
In Chum Phae, between 1940 and 2025, the highest apparent temperature reached 46.7 °C on 15 April 1953, and the lowest was 0.9 °C on 2 January 1974.
Compare Chum Phae with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Chum Phae