Phetchabun climate — normals and trends
Phetchabun (Thailand) has a tropical savanna climate (Aw) under the Köppen-Geiger classification. Its mean annual temperature is 25.1 °C and it receives 1,307 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 (27.7 °C on average) and the coldest is December (21.8 °C). Rainfall peaks in September.
Phetchabun averages 0 frost days, 231 hot days (≥ 30 °C) and 167 rainy days per year.
Phetchabun has warmed by +1.6 °C between 1940 and 2025, or +0.19 °C per decade. This trend is statistically significant.
The hottest day of the period reached 39.5 °C (on 18 April 1977) and the coldest 5.0 °C (on 31 December 1975).
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
PhetchabunPhetchabun
- coords
- 16.42°, 101.16°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
25.1°C
Average daily high
30.8°C
Average daily low
20.9°C
Annual rainfall
1,307mm
Sunshine / day
9.5h
Mean relative humidity
77%
Average peak wind
9.2km/h
Seasonal range
5.9°C
Frost days (< 0 °C)
0 d/yr
Hot days (≥ 30 °C)
231 d/yr
Rainy days (≥ 1 mm)
167 d/yr
Annual snowfall
0.0 cm
Average feels-like high
35.0 °C
Average feels-like low
23.9 °C
Average peak gust
27.4 km/h
Tropical nights (≥ 20 °C)
259 d/yr
Solar radiation
17.9 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.6 °C
since 1940
+0.2 °C per decade · r² = 0.68 · 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
39.5 °C
18 April 1977
Coldest day
5.0 °C
31 December 1975
Wettest day
187 mm
1 September 2002
Windiest day
28.4 km/h
26 October 1943
Strongest gust
66.2 km/h
2 August 2019
Hottest feels-like
45.5 °C
15 April 1953
Coldest feels-like
1.8 °C
13 January 1955
Sunniest day
12.8 h
7 July 2023
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 | 28.9 °C | -0.7 °C | 0 mm | -9 mm |
| Feb | 31.2 °C | -0.2 °C | 32 mm | +17 mm |
| Mar | 32.9 °C | -0.2 °C | 6 mm | -24 mm |
| Apr | 33.1 °C | -0.8 °C | 52 mm | -3 mm |
| May | 31.8 °C | -0.6 °C | 185 mm | +43 mm |
| Jun | 30.9 °C | +0.1 °C | 180 mm | +1 mm |
| Jul | 29.7 °C | -0.2 °C | 256 mm | +48 mm |
| Aug | 30.6 °C | +1.1 °C | 273 mm | +28 mm |
| Sep | 29.8 °C | +0.1 °C | 228 mm | -48 mm |
| Oct | 30.9 °C | +0.9 °C | 105 mm | -15 mm |
| Nov | 28.8 °C | -1.0 °C | 85 mm | +59 mm |
| Dec | 30.0 °C | +1.1 °C | 16 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 Phetchabun?
Phetchabun has a tropical savanna climate (Köppen Aw). Over 1940-2025, the average annual temperature is 25.1 °C and it receives 1,307 mm of precipitation per year.
What is the hottest day ever recorded in Phetchabun?
The hottest day measured in Phetchabun between 1940 and 2025 was 18 April 1977, reaching 39.5 °C.
What is the coldest day in Phetchabun?
The coldest day measured in Phetchabun between 1940 and 2025 was 31 December 1975, at 5.0 °C.
Does it snow in Phetchabun?
Almost never: Phetchabun sees virtually no snow, with about 0 frost days per year.
Has the climate of Phetchabun warmed?
Yes: Phetchabun warmed by +1.6 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Phetchabun?
The wettest day measured in Phetchabun between 1940 and 2025 was 1 September 2002, with 187 mm of rain in 24 hours.
What was the windiest day in Phetchabun?
The windiest day measured in Phetchabun between 1940 and 2025 was 26 October 1943, with winds reaching 28.4 km/h.
What is the warmest month in Phetchabun?
The warmest month in Phetchabun is April (27.7 °C on average); the coldest is December (21.8 °C).
How much does it rain in Phetchabun?
Phetchabun receives on average 1,307 mm of precipitation per year, spread over about 167 rainy days.
Is it sunny in Phetchabun?
Phetchabun gets on average 9.5 hours of sunshine per day, roughly 3,468 hours per year over 1940-2025.
Are there tropical nights in Phetchabun?
Yes: Phetchabun has on average 259 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Phetchabun?
In Phetchabun, between 1940 and 2025, the highest apparent temperature reached 45.5 °C on 15 April 1953, and the lowest was 1.8 °C on 13 January 1955.
Compare Phetchabun with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Phetchabun