Phu Khiao climate — normals and trends
Phu Khiao (Thailand) has a tropical savanna climate (Aw) under the Köppen-Geiger classification. Its mean annual temperature is 26.5 °C and it receives 1,169 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 (29.2 °C on average) and the coldest is December (22.1 °C). Rainfall peaks in September.
Phu Khiao averages 0 frost days, 267 hot days (≥ 30 °C) and 151 rainy days per year.
Phu Khiao 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 42.3 °C (on 17 April 2016) and the coldest 5.1 °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
Phu KhiaoChaiyaphum
- coords
- 16.38°, 102.13°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
26.5°C
Average daily high
31.8°C
Average daily low
22.2°C
Annual rainfall
1,169mm
Sunshine / day
10.0h
Mean relative humidity
72%
Average peak wind
10.3km/h
Seasonal range
7.1°C
Frost days (< 0 °C)
0 d/yr
Hot days (≥ 30 °C)
267 d/yr
Rainy days (≥ 1 mm)
151 d/yr
Annual snowfall
0.0 cm
Average feels-like high
35.8 °C
Average feels-like low
25.4 °C
Average peak gust
27.5 km/h
Tropical nights (≥ 20 °C)
276 d/yr
Solar radiation
18.4 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
42.3 °C
17 April 2016
Coldest day
5.1 °C
2 January 1974
Wettest day
152 mm
18 August 1991
Windiest day
26.3 km/h
11 March 1940
Strongest gust
69.5 km/h
16 October 1952
Hottest feels-like
48.2 °C
21 March 1953
Coldest feels-like
2.2 °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 | 28.4 °C | -1.0 °C | 0 mm | -9 mm |
| Feb | 31.7 °C | -0.3 °C | 24 mm | +9 mm |
| Mar | 33.8 °C | -0.5 °C | 14 mm | -26 mm |
| Apr | 35.4 °C | +0.3 °C | 55 mm | -20 mm |
| May | 33.4 °C | -0.3 °C | 190 mm | +38 mm |
| Jun | 33.2 °C | -0.1 °C | 133 mm | +12 mm |
| Jul | 32.0 °C | -0.8 °C | 132 mm | -3 mm |
| Aug | 33.0 °C | +0.9 °C | 200 mm | +22 mm |
| Sep | 31.8 °C | +0.7 °C | 213 mm | -56 mm |
| Oct | 31.4 °C | +1.1 °C | 132 mm | -7 mm |
| Nov | 28.1 °C | -1.2 °C | 77 mm | +47 mm |
| Dec | 29.4 °C | +1.2 °C | 6 mm | +1 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 Phu Khiao?
Phu Khiao has a tropical savanna climate (Köppen Aw). Over 1940-2025, the average annual temperature is 26.5 °C and it receives 1,169 mm of precipitation per year.
What is the hottest day ever recorded in Phu Khiao?
The hottest day measured in Phu Khiao between 1940 and 2025 was 17 April 2016, reaching 42.3 °C.
What is the coldest day in Phu Khiao?
The coldest day measured in Phu Khiao between 1940 and 2025 was 2 January 1974, at 5.1 °C.
Does it snow in Phu Khiao?
Almost never: Phu Khiao sees virtually no snow, with about 0 frost days per year.
Has the climate of Phu Khiao warmed?
Yes: Phu Khiao warmed by +1.6 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Phu Khiao?
The wettest day measured in Phu Khiao between 1940 and 2025 was 18 August 1991, with 152 mm of rain in 24 hours.
What was the windiest day in Phu Khiao?
The windiest day measured in Phu Khiao between 1940 and 2025 was 11 March 1940, with winds reaching 26.3 km/h.
What is the warmest month in Phu Khiao?
The warmest month in Phu Khiao is April (29.2 °C on average); the coldest is December (22.1 °C).
How much does it rain in Phu Khiao?
Phu Khiao receives on average 1,169 mm of precipitation per year, spread over about 151 rainy days.
Is it sunny in Phu Khiao?
Phu Khiao gets on average 10.0 hours of sunshine per day, roughly 3,650 hours per year over 1940-2025.
Are there tropical nights in Phu Khiao?
Yes: Phu Khiao has on average 276 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Phu Khiao?
In Phu Khiao, between 1940 and 2025, the highest apparent temperature reached 48.2 °C on 21 March 1953, and the lowest was 2.2 °C on 2 January 1974.
Compare Phu Khiao with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Phu Khiao