Sungai Besar climate — normals and trends
Sungai Besar (Malaysia) has a tropical rainforest climate (Af) under the Köppen-Geiger classification. Its mean annual temperature is 27.1 °C and it receives 2,249 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 May (27.8 °C on average) and the coldest is December (26.5 °C). Rainfall peaks in November.
Sungai Besar averages 0 frost days, 254 hot days (≥ 30 °C) and 292 rainy days per year.
Sungai Besar has warmed by +2.2 °C between 1940 and 2025, or +0.26 °C per decade. This trend is statistically significant.
The hottest day of the period reached 35.6 °C (on 9 May 2011) and the coldest 20.4 °C (on 5 January 1957).
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
Sungai BesarSelangor
- coords
- 3.67°, 100.99°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
27.1°C
Average daily high
30.6°C
Average daily low
24.6°C
Annual rainfall
2,249mm
Sunshine / day
10.2h
Mean relative humidity
86%
Average peak wind
11.0km/h
Seasonal range
1.3°C
Frost days (< 0 °C)
0 d/yr
Hot days (≥ 30 °C)
254 d/yr
Rainy days (≥ 1 mm)
292 d/yr
Annual snowfall
0.0 cm
Average feels-like high
37.5 °C
Average feels-like low
29.5 °C
Average peak gust
26.4 km/h
Tropical nights (≥ 20 °C)
365 d/yr
Solar radiation
19.4 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.2 °C
since 1940
+0.3 °C per decade · r² = 0.88 · 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
35.6 °C
9 May 2011
Coldest day
20.4 °C
5 January 1957
Wettest day
229 mm
22 September 2000
Windiest day
25.8 km/h
7 May 1986
Strongest gust
54.7 km/h
17 September 1943
Hottest feels-like
43.8 °C
15 March 2020
Coldest feels-like
23.1 °C
5 January 1957
Sunniest day
12.1 h
14 July 1958
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 | 30.6 °C | +0.5 °C | 297 mm | +158 mm |
| Feb | 31.3 °C | +0.6 °C | 125 mm | +11 mm |
| Mar | 31.7 °C | +0.6 °C | 137 mm | -33 mm |
| Apr | 31.9 °C | +0.7 °C | 247 mm | +42 mm |
| May | 32.6 °C | +1.3 °C | 159 mm | -33 mm |
| Jun | 32.4 °C | +1.2 °C | 84 mm | -49 mm |
| Jul | 31.6 °C | +0.8 °C | 92 mm | -49 mm |
| Aug | 31.5 °C | +0.9 °C | 145 mm | -28 mm |
| Sep | 31.0 °C | +0.6 °C | 219 mm | -1 mm |
| Oct | 31.0 °C | +0.7 °C | 300 mm | +39 mm |
| Nov | 30.3 °C | +0.3 °C | 491 mm | +214 mm |
| Dec | 30.5 °C | +0.7 °C | 303 mm | +79 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 Sungai Besar?
Sungai Besar has a tropical rainforest climate (Köppen Af). Over 1940-2025, the average annual temperature is 27.1 °C and it receives 2,249 mm of precipitation per year.
What is the hottest day ever recorded in Sungai Besar?
The hottest day measured in Sungai Besar between 1940 and 2025 was 9 May 2011, reaching 35.6 °C.
What is the coldest day in Sungai Besar?
The coldest day measured in Sungai Besar between 1940 and 2025 was 5 January 1957, at 20.4 °C.
Does it snow in Sungai Besar?
Almost never: Sungai Besar sees virtually no snow, with about 0 frost days per year.
Has the climate of Sungai Besar warmed?
Yes: Sungai Besar warmed by +2.2 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Sungai Besar?
The wettest day measured in Sungai Besar between 1940 and 2025 was 22 September 2000, with 229 mm of rain in 24 hours.
What was the windiest day in Sungai Besar?
The windiest day measured in Sungai Besar between 1940 and 2025 was 7 May 1986, with winds reaching 25.8 km/h.
What is the warmest month in Sungai Besar?
The warmest month in Sungai Besar is May (27.8 °C on average); the coldest is December (26.5 °C).
How much does it rain in Sungai Besar?
Sungai Besar receives on average 2,249 mm of precipitation per year, spread over about 292 rainy days.
Is it sunny in Sungai Besar?
Sungai Besar gets on average 10.2 hours of sunshine per day, roughly 3,723 hours per year over 1940-2025.
Are there tropical nights in Sungai Besar?
Yes: Sungai Besar has on average 365 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Sungai Besar?
In Sungai Besar, between 1940 and 2025, the highest apparent temperature reached 43.8 °C on 15 March 2020, and the lowest was 23.1 °C on 5 January 1957.
Compare Sungai Besar with another city
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Nearby cities
The climate around Sungai Besar