Tambunan climate — normals and trends
Tambunan (Malaysia) has a tropical rainforest climate (Af) under the Köppen-Geiger classification. Its mean annual temperature is 21.0 °C and it receives 2,623 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 (21.7 °C on average) and the coldest is January (20.4 °C). Rainfall peaks in October.
Tambunan averages 0 frost days, 2 hot days (≥ 30 °C) and 288 rainy days per year.
Tambunan has warmed by +2.1 °C between 1940 and 2025, or +0.25 °C per decade. This trend is statistically significant.
The hottest day of the period reached 33.5 °C (on 29 April 1998) and the coldest 12.4 °C (on 3 January 1943).
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
TambunanSabah
- coords
- 5.72°, 116.40°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
21.0°C
Average daily high
25.8°C
Average daily low
17.7°C
Annual rainfall
2,623mm
Sunshine / day
9.6h
Mean relative humidity
88%
Average peak wind
6.5km/h
Seasonal range
1.3°C
Frost days (< 0 °C)
0 d/yr
Hot days (≥ 30 °C)
2 d/yr
Rainy days (≥ 1 mm)
288 d/yr
Annual snowfall
0.0 cm
Average feels-like high
30.0 °C
Average feels-like low
19.9 °C
Average peak gust
28.1 km/h
Tropical nights (≥ 20 °C)
3 d/yr
Solar radiation
18.4 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.1 °C
since 1940
+0.3 °C per decade · r² = 0.82 · 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
33.5 °C
29 April 1998
Coldest day
12.4 °C
3 January 1943
Wettest day
203 mm
13 January 1968
Windiest day
21.9 km/h
15 August 2002
Strongest gust
76.3 km/h
12 August 2002
Hottest feels-like
37.1 °C
15 May 2019
Coldest feels-like
11.8 °C
22 February 1992
Sunniest day
12.2 h
17 July 1946
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 | 26.4 °C | +1.6 °C | 436 mm | +249 mm |
| Feb | 26.5 °C | +1.2 °C | 214 mm | +82 mm |
| Mar | 26.6 °C | +0.4 °C | 449 mm | +297 mm |
| Apr | 27.1 °C | +0.3 °C | 284 mm | +103 mm |
| May | 27.6 °C | +1.0 °C | 457 mm | +197 mm |
| Jun | 27.1 °C | +1.0 °C | 134 mm | -102 mm |
| Jul | 27.6 °C | +1.8 °C | 83 mm | -131 mm |
| Aug | 26.7 °C | +0.8 °C | 271 mm | +37 mm |
| Sep | 27.0 °C | +1.2 °C | 315 mm | +45 mm |
| Oct | 26.6 °C | +1.0 °C | 266 mm | -26 mm |
| Nov | 26.6 °C | +1.1 °C | 228 mm | -23 mm |
| Dec | 26.7 °C | +1.5 °C | 345 mm | +131 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 Tambunan?
Tambunan has a tropical rainforest climate (Köppen Af). Over 1940-2025, the average annual temperature is 21.0 °C and it receives 2,623 mm of precipitation per year.
What is the hottest day ever recorded in Tambunan?
The hottest day measured in Tambunan between 1940 and 2025 was 29 April 1998, reaching 33.5 °C.
What is the coldest day in Tambunan?
The coldest day measured in Tambunan between 1940 and 2025 was 3 January 1943, at 12.4 °C.
Does it snow in Tambunan?
Almost never: Tambunan sees virtually no snow, with about 0 frost days per year.
Has the climate of Tambunan warmed?
Yes: Tambunan warmed by +2.1 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Tambunan?
The wettest day measured in Tambunan between 1940 and 2025 was 13 January 1968, with 203 mm of rain in 24 hours.
What was the windiest day in Tambunan?
The windiest day measured in Tambunan between 1940 and 2025 was 15 August 2002, with winds reaching 21.9 km/h.
What is the warmest month in Tambunan?
The warmest month in Tambunan is April (21.7 °C on average); the coldest is January (20.4 °C).
How much does it rain in Tambunan?
Tambunan receives on average 2,623 mm of precipitation per year, spread over about 288 rainy days.
Is it sunny in Tambunan?
Tambunan gets on average 9.6 hours of sunshine per day, roughly 3,504 hours per year over 1940-2025.
Are there tropical nights in Tambunan?
Yes: Tambunan has on average 3 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Tambunan?
In Tambunan, between 1940 and 2025, the highest apparent temperature reached 37.1 °C on 15 May 2019, and the lowest was 11.8 °C on 22 February 1992.
Compare Tambunan with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Tambunan