Khlong Yai climate — normals and trends
Khlong Yai (Thailand) has a tropical monsoon climate (Am) under the Köppen-Geiger classification. Its mean annual temperature is 25.1 °C and it receives 3,465 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 (26.0 °C on average) and the coldest is January (24.5 °C). Rainfall peaks in August.
Khlong Yai averages 0 frost days, 154 hot days (≥ 30 °C) and 273 rainy days per year.
Khlong Yai has warmed by +2.0 °C between 1940 and 2025, or +0.24 °C per decade. This trend is statistically significant.
The hottest day of the period reached 36.8 °C (on 24 March 1998) and the coldest 12.7 °C (on 19 January 1956).
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
Khlong YaiTrat
- coords
- 11.78°, 102.89°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
25.1°C
Average daily high
29.4°C
Average daily low
22.2°C
Annual rainfall
3,465mm
Sunshine / day
9.5h
Mean relative humidity
86%
Average peak wind
10.4km/h
Seasonal range
1.5°C
Frost days (< 0 °C)
0 d/yr
Hot days (≥ 30 °C)
154 d/yr
Rainy days (≥ 1 mm)
273 d/yr
Annual snowfall
0.0 cm
Average feels-like high
34.9 °C
Average feels-like low
25.9 °C
Average peak gust
31.0 km/h
Tropical nights (≥ 20 °C)
331 d/yr
Solar radiation
17.5 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.0 °C
since 1940
+0.2 °C per decade · r² = 0.86 · 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
36.8 °C
24 March 1998
Coldest day
12.7 °C
19 January 1956
Wettest day
159 mm
29 September 1979
Windiest day
30.4 km/h
5 October 1960
Strongest gust
67.0 km/h
18 August 1991
Hottest feels-like
42.9 °C
18 May 2010
Coldest feels-like
10.4 °C
12 January 1955
Sunniest day
12.5 h
10 July 1951
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 | 32.1 °C | +1.7 °C | 2 mm | -45 mm |
| Feb | 31.7 °C | +1.4 °C | 117 mm | +27 mm |
| Mar | 30.7 °C | +0.4 °C | 185 mm | +33 mm |
| Apr | 30.9 °C | +0.3 °C | 210 mm | +11 mm |
| May | 30.4 °C | +0.7 °C | 407 mm | +78 mm |
| Jun | 29.1 °C | +0.6 °C | 508 mm | +19 mm |
| Jul | 28.8 °C | +0.8 °C | 574 mm | +26 mm |
| Aug | 28.6 °C | +0.7 °C | 454 mm | -114 mm |
| Sep | 28.3 °C | +0.3 °C | 544 mm | +39 mm |
| Oct | 30.2 °C | +0.9 °C | 287 mm | -77 mm |
| Nov | 29.5 °C | -0.4 °C | 154 mm | +17 mm |
| Dec | 32.1 °C | +1.9 °C | 15 mm | -21 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 Khlong Yai?
Khlong Yai has a tropical monsoon climate (Köppen Am). Over 1940-2025, the average annual temperature is 25.1 °C and it receives 3,465 mm of precipitation per year.
What is the hottest day ever recorded in Khlong Yai?
The hottest day measured in Khlong Yai between 1940 and 2025 was 24 March 1998, reaching 36.8 °C.
What is the coldest day in Khlong Yai?
The coldest day measured in Khlong Yai between 1940 and 2025 was 19 January 1956, at 12.7 °C.
Does it snow in Khlong Yai?
Almost never: Khlong Yai sees virtually no snow, with about 0 frost days per year.
Has the climate of Khlong Yai warmed?
Yes: Khlong Yai warmed by +2.0 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Khlong Yai?
The wettest day measured in Khlong Yai between 1940 and 2025 was 29 September 1979, with 159 mm of rain in 24 hours.
What was the windiest day in Khlong Yai?
The windiest day measured in Khlong Yai between 1940 and 2025 was 5 October 1960, with winds reaching 30.4 km/h.
What is the warmest month in Khlong Yai?
The warmest month in Khlong Yai is April (26.0 °C on average); the coldest is January (24.5 °C).
How much does it rain in Khlong Yai?
Khlong Yai receives on average 3,465 mm of precipitation per year, spread over about 273 rainy days.
Is it sunny in Khlong Yai?
Khlong Yai gets on average 9.5 hours of sunshine per day, roughly 3,468 hours per year over 1940-2025.
Are there tropical nights in Khlong Yai?
Yes: Khlong Yai has on average 331 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Khlong Yai?
In Khlong Yai, between 1940 and 2025, the highest apparent temperature reached 42.9 °C on 18 May 2010, and the lowest was 10.4 °C on 12 January 1955.
Compare Khlong Yai with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Khlong Yai