Kathu climate — normals and trends
Kathu (Thailand) has a tropical monsoon climate (Am) under the Köppen-Geiger classification. Its mean annual temperature is 27.1 °C and it receives 2,216 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 (27.8 °C on average) and the coldest is October (26.5 °C). Rainfall peaks in September.
Kathu averages 0 frost days, 4 hot days (≥ 30 °C) and 233 rainy days per year.
Kathu has warmed by +1.0 °C between 1940 and 2025, or +0.12 °C per decade. This trend is statistically significant.
The hottest day of the period reached 31.6 °C (on 17 March 2010) and the coldest 22.1 °C (on 26 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
KathuPhuket
- coords
- 7.92°, 98.33°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
27.1°C
Average daily high
28.1°C
Average daily low
26.2°C
Annual rainfall
2,216mm
Sunshine / day
10.0h
Mean relative humidity
81%
Average peak wind
22.5km/h
Seasonal range
1.3°C
Frost days (< 0 °C)
0 d/yr
Hot days (≥ 30 °C)
4 d/yr
Rainy days (≥ 1 mm)
233 d/yr
Annual snowfall
0.0 cm
Average feels-like high
32.8 °C
Average feels-like low
29.1 °C
Average peak gust
33.2 km/h
Tropical nights (≥ 20 °C)
365 d/yr
Solar radiation
19.8 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.0 °C
since 1940
+0.1 °C per decade · r² = 0.73 · 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
31.6 °C
17 March 2010
Coldest day
22.1 °C
26 December 1999
Wettest day
327 mm
24 November 2000
Windiest day
52.6 km/h
11 April 1945
Strongest gust
78.5 km/h
25 June 1961
Hottest feels-like
39.6 °C
29 April 2024
Coldest feels-like
20.1 °C
26 December 1999
Sunniest day
12.5 h
19 June 1940
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 | 28.6 °C | +0.7 °C | 15 mm | -25 mm |
| Feb | 28.5 °C | +0.3 °C | 92 mm | +59 mm |
| Mar | 29.1 °C | +0.7 °C | 56 mm | -11 mm |
| Apr | 28.9 °C | +0.2 °C | 236 mm | +102 mm |
| May | 29.1 °C | +0.5 °C | 355 mm | +86 mm |
| Jun | 28.9 °C | +0.5 °C | 250 mm | +12 mm |
| Jul | 28.8 °C | +0.7 °C | 157 mm | -88 mm |
| Aug | 28.6 °C | +0.7 °C | 202 mm | -65 mm |
| Sep | 28.2 °C | +0.6 °C | 259 mm | -72 mm |
| Oct | 27.9 °C | +0.5 °C | 359 mm | +51 mm |
| Nov | 27.6 °C | 0.0 °C | 292 mm | +91 mm |
| Dec | 28.3 °C | +0.5 °C | 17 mm | -64 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 Kathu?
Kathu has a tropical monsoon climate (Köppen Am). Over 1940-2025, the average annual temperature is 27.1 °C and it receives 2,216 mm of precipitation per year.
What is the hottest day ever recorded in Kathu?
The hottest day measured in Kathu between 1940 and 2025 was 17 March 2010, reaching 31.6 °C.
What is the coldest day in Kathu?
The coldest day measured in Kathu between 1940 and 2025 was 26 December 1999, at 22.1 °C.
Does it snow in Kathu?
Almost never: Kathu sees virtually no snow, with about 0 frost days per year.
Has the climate of Kathu warmed?
Yes: Kathu warmed by +1.0 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Kathu?
The wettest day measured in Kathu between 1940 and 2025 was 24 November 2000, with 327 mm of rain in 24 hours.
What was the windiest day in Kathu?
The windiest day measured in Kathu between 1940 and 2025 was 11 April 1945, with winds reaching 52.6 km/h.
What is the warmest month in Kathu?
The warmest month in Kathu is April (27.8 °C on average); the coldest is October (26.5 °C).
How much does it rain in Kathu?
Kathu receives on average 2,216 mm of precipitation per year, spread over about 233 rainy days.
Is it sunny in Kathu?
Kathu gets on average 10.0 hours of sunshine per day, roughly 3,650 hours per year over 1940-2025.
Are there tropical nights in Kathu?
Yes: Kathu has on average 365 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Kathu?
In Kathu, between 1940 and 2025, the highest apparent temperature reached 39.6 °C on 29 April 2024, and the lowest was 20.1 °C on 26 December 1999.
Compare Kathu with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Kathu