Si Mahosot climate — normals and trends
Si Mahosot (Thailand) has a tropical savanna climate (Aw) under the Köppen-Geiger classification. Its mean annual temperature is 27.0 °C and it receives 1,730 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 (29.0 °C on average) and the coldest is December (24.9 °C). Rainfall peaks in September.
Si Mahosot averages 0 frost days, 305 hot days (≥ 30 °C) and 193 rainy days per year.
Si Mahosot has warmed by +2.0 °C between 1940 and 2025, or +0.23 °C per decade. This trend is statistically significant.
The hottest day of the period reached 40.2 °C (on 30 April 2024) and the coldest 10.7 °C (on 17 January 1976).
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
Si MahosotPrachin Buri
- coords
- 13.89°, 101.41°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
27.0°C
Average daily high
31.9°C
Average daily low
23.3°C
Annual rainfall
1,730mm
Sunshine / day
10.0h
Mean relative humidity
77%
Average peak wind
11.7km/h
Seasonal range
4.1°C
Frost days (< 0 °C)
0 d/yr
Hot days (≥ 30 °C)
305 d/yr
Rainy days (≥ 1 mm)
193 d/yr
Annual snowfall
0.0 cm
Average feels-like high
36.9 °C
Average feels-like low
27.2 °C
Average peak gust
30.1 km/h
Tropical nights (≥ 20 °C)
326 d/yr
Solar radiation
18.3 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.0 °C
since 1940
+0.2 °C per decade · r² = 0.78 · 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
40.2 °C
30 April 2024
Coldest day
10.7 °C
17 January 1976
Wettest day
157 mm
1 February 1953
Windiest day
29.7 km/h
4 March 1977
Strongest gust
77.4 km/h
2 August 2019
Hottest feels-like
46.8 °C
15 April 1953
Coldest feels-like
7.3 °C
12 January 1955
Sunniest day
12.7 h
1 July 2013
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 | 31.1 °C | -0.4 °C | 0 mm | -10 mm |
| Feb | 34.0 °C | +1.1 °C | 11 mm | -13 mm |
| Mar | 34.6 °C | +0.4 °C | 33 mm | -13 mm |
| Apr | 34.8 °C | +0.2 °C | 81 mm | +5 mm |
| May | 32.7 °C | -0.3 °C | 280 mm | +75 mm |
| Jun | 32.7 °C | +1.0 °C | 189 mm | -81 mm |
| Jul | 31.8 °C | +0.6 °C | 277 mm | -3 mm |
| Aug | 32.2 °C | +1.2 °C | 175 mm | -121 mm |
| Sep | 31.4 °C | +0.6 °C | 344 mm | +23 mm |
| Oct | 31.9 °C | +1.0 °C | 119 mm | -46 mm |
| Nov | 30.0 °C | -0.9 °C | 102 mm | +69 mm |
| Dec | 31.6 °C | +1.1 °C | 10 mm | +5 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 Si Mahosot?
Si Mahosot has a tropical savanna climate (Köppen Aw). Over 1940-2025, the average annual temperature is 27.0 °C and it receives 1,730 mm of precipitation per year.
What is the hottest day ever recorded in Si Mahosot?
The hottest day measured in Si Mahosot between 1940 and 2025 was 30 April 2024, reaching 40.2 °C.
What is the coldest day in Si Mahosot?
The coldest day measured in Si Mahosot between 1940 and 2025 was 17 January 1976, at 10.7 °C.
Does it snow in Si Mahosot?
Almost never: Si Mahosot sees virtually no snow, with about 0 frost days per year.
Has the climate of Si Mahosot warmed?
Yes: Si Mahosot warmed by +2.0 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Si Mahosot?
The wettest day measured in Si Mahosot between 1940 and 2025 was 1 February 1953, with 157 mm of rain in 24 hours.
What was the windiest day in Si Mahosot?
The windiest day measured in Si Mahosot between 1940 and 2025 was 4 March 1977, with winds reaching 29.7 km/h.
What is the warmest month in Si Mahosot?
The warmest month in Si Mahosot is April (29.0 °C on average); the coldest is December (24.9 °C).
How much does it rain in Si Mahosot?
Si Mahosot receives on average 1,730 mm of precipitation per year, spread over about 193 rainy days.
Is it sunny in Si Mahosot?
Si Mahosot gets on average 10.0 hours of sunshine per day, roughly 3,650 hours per year over 1940-2025.
Are there tropical nights in Si Mahosot?
Yes: Si Mahosot has on average 326 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Si Mahosot?
In Si Mahosot, between 1940 and 2025, the highest apparent temperature reached 46.8 °C on 15 April 1953, and the lowest was 7.3 °C on 12 January 1955.
Compare Si Mahosot with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Si Mahosot