Chalong climate — normals and trends
Chalong (Thailand) has a tropical monsoon climate (Am) under the Köppen-Geiger classification. Its mean annual temperature is 27.2 °C and it receives 2,027 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 (26.6 °C). Rainfall peaks in October.
Chalong averages 0 frost days, 3 hot days (≥ 30 °C) and 230 rainy days per year.
Chalong has warmed by +1.1 °C between 1940 and 2025, or +0.12 °C per decade. This trend is statistically significant.
The hottest day of the period reached 31.5 °C (on 20 March 2024) and the coldest 22.8 °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
ChalongPhuket
- coords
- 7.84°, 98.34°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
27.2°C
Average daily high
28.1°C
Average daily low
26.3°C
Annual rainfall
2,027mm
Sunshine / day
10.2h
Mean relative humidity
80%
Average peak wind
23.3km/h
Seasonal range
1.2°C
Frost days (< 0 °C)
0 d/yr
Hot days (≥ 30 °C)
3 d/yr
Rainy days (≥ 1 mm)
230 d/yr
Annual snowfall
0.0 cm
Average feels-like high
32.7 °C
Average feels-like low
29.1 °C
Average peak gust
33.7 km/h
Tropical nights (≥ 20 °C)
365 d/yr
Solar radiation
20.0 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.1 °C
since 1940
+0.1 °C per decade · r² = 0.75 · 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
31.5 °C
20 March 2024
Coldest day
22.8 °C
26 December 1999
Wettest day
211 mm
24 November 2000
Windiest day
54.3 km/h
25 June 1961
Strongest gust
79.2 km/h
25 June 1961
Hottest feels-like
39.9 °C
29 April 2024
Coldest feels-like
20.7 °C
26 December 1999
Sunniest day
12.5 h
13 June 1942
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 | +0.8 °C | 15 mm | -30 mm |
| Feb | 28.6 °C | +0.4 °C | 93 mm | +58 mm |
| Mar | 29.0 °C | +0.6 °C | 45 mm | -21 mm |
| Apr | 28.9 °C | +0.2 °C | 224 mm | +95 mm |
| May | 29.1 °C | +0.5 °C | 314 mm | +83 mm |
| Jun | 29.0 °C | +0.5 °C | 208 mm | +21 mm |
| Jul | 28.9 °C | +0.7 °C | 109 mm | -88 mm |
| Aug | 28.7 °C | +0.7 °C | 137 mm | -77 mm |
| Sep | 28.3 °C | +0.6 °C | 231 mm | -52 mm |
| Oct | 28.0 °C | +0.6 °C | 322 mm | +27 mm |
| Nov | 27.6 °C | 0.0 °C | 288 mm | +54 mm |
| Dec | 28.2 °C | +0.4 °C | 26 mm | -85 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 Chalong?
Chalong has a tropical monsoon climate (Köppen Am). Over 1940-2025, the average annual temperature is 27.2 °C and it receives 2,027 mm of precipitation per year.
What is the hottest day ever recorded in Chalong?
The hottest day measured in Chalong between 1940 and 2025 was 20 March 2024, reaching 31.5 °C.
What is the coldest day in Chalong?
The coldest day measured in Chalong between 1940 and 2025 was 26 December 1999, at 22.8 °C.
Does it snow in Chalong?
Almost never: Chalong sees virtually no snow, with about 0 frost days per year.
Has the climate of Chalong warmed?
Yes: Chalong warmed by +1.1 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Chalong?
The wettest day measured in Chalong between 1940 and 2025 was 24 November 2000, with 211 mm of rain in 24 hours.
What was the windiest day in Chalong?
The windiest day measured in Chalong between 1940 and 2025 was 25 June 1961, with winds reaching 54.3 km/h.
What is the warmest month in Chalong?
The warmest month in Chalong is April (27.8 °C on average); the coldest is October (26.6 °C).
How much does it rain in Chalong?
Chalong receives on average 2,027 mm of precipitation per year, spread over about 230 rainy days.
Is it sunny in Chalong?
Chalong gets on average 10.2 hours of sunshine per day, roughly 3,723 hours per year over 1940-2025.
Are there tropical nights in Chalong?
Yes: Chalong has on average 365 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Chalong?
In Chalong, between 1940 and 2025, the highest apparent temperature reached 39.9 °C on 29 April 2024, and the lowest was 20.7 °C on 26 December 1999.
Compare Chalong with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Chalong