Bintulu climate — normals and trends
Bintulu (Malaysia) has a tropical rainforest climate (Af) under the Köppen-Geiger classification. Its mean annual temperature is 26.5 °C and it receives 2,687 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 (27.1 °C on average) and the coldest is January (25.7 °C). Rainfall peaks in December.
Bintulu averages 0 frost days, 153 hot days (≥ 30 °C) and 297 rainy days per year.
Bintulu has warmed by +1.7 °C between 1940 and 2025, or +0.19 °C per decade. This trend is statistically significant.
The hottest day of the period reached 35.1 °C (on 3 August 2009) and the coldest 21.0 °C (on 23 January 1940).
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
BintuluSarawak
- coords
- 3.17°, 113.03°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
26.5°C
Average daily high
29.7°C
Average daily low
24.2°C
Annual rainfall
2,687mm
Sunshine / day
9.4h
Mean relative humidity
85%
Average peak wind
12.1km/h
Seasonal range
1.4°C
Frost days (< 0 °C)
0 d/yr
Hot days (≥ 30 °C)
153 d/yr
Rainy days (≥ 1 mm)
297 d/yr
Annual snowfall
0.0 cm
Average feels-like high
36.0 °C
Average feels-like low
28.6 °C
Average peak gust
26.2 km/h
Tropical nights (≥ 20 °C)
365 d/yr
Solar radiation
17.8 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.7 °C
since 1940
+0.2 °C per decade · r² = 0.87 · 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
35.1 °C
3 August 2009
Coldest day
21.0 °C
23 January 1940
Wettest day
169 mm
4 November 1968
Windiest day
32.1 km/h
8 January 1940
Strongest gust
57.2 km/h
8 January 1940
Hottest feels-like
43.1 °C
29 May 2020
Coldest feels-like
23.3 °C
23 January 1940
Sunniest day
12.2 h
18 June 1951
Normals computed over complete calendar years 1940–2025.
A specific year
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Across the whole year
Month by month
| High | vs. normal | Precipitation | vs. normal | |
|---|---|---|---|---|
| Jan | 29.5 °C | +1.0 °C | 512 mm | +240 mm |
| Feb | 29.5 °C | +0.8 °C | 265 mm | +80 mm |
| Mar | 30.3 °C | +0.9 °C | 253 mm | +74 mm |
| Apr | 30.9 °C | +0.9 °C | 226 mm | +38 mm |
| May | 31.5 °C | +1.1 °C | 151 mm | -45 mm |
| Jun | 32.0 °C | +1.5 °C | 89 mm | -85 mm |
| Jul | 32.6 °C | +2.2 °C | 79 mm | -94 mm |
| Aug | 30.7 °C | +0.4 °C | 174 mm | -29 mm |
| Sep | 30.6 °C | +0.7 °C | 305 mm | +68 mm |
| Oct | 30.8 °C | +1.3 °C | 191 mm | -82 mm |
| Nov | 30.5 °C | +1.2 °C | 242 mm | -50 mm |
| Dec | 29.8 °C | +0.8 °C | 509 mm | +192 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 Bintulu?
Bintulu has a tropical rainforest climate (Köppen Af). Over 1940-2025, the average annual temperature is 26.5 °C and it receives 2,687 mm of precipitation per year.
What is the hottest day ever recorded in Bintulu?
The hottest day measured in Bintulu between 1940 and 2025 was 3 August 2009, reaching 35.1 °C.
What is the coldest day in Bintulu?
The coldest day measured in Bintulu between 1940 and 2025 was 23 January 1940, at 21.0 °C.
Does it snow in Bintulu?
Almost never: Bintulu sees virtually no snow, with about 0 frost days per year.
Has the climate of Bintulu warmed?
Yes: Bintulu warmed by +1.7 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Bintulu?
The wettest day measured in Bintulu between 1940 and 2025 was 4 November 1968, with 169 mm of rain in 24 hours.
What was the windiest day in Bintulu?
The windiest day measured in Bintulu between 1940 and 2025 was 8 January 1940, with winds reaching 32.1 km/h.
What is the warmest month in Bintulu?
The warmest month in Bintulu is May (27.1 °C on average); the coldest is January (25.7 °C).
How much does it rain in Bintulu?
Bintulu receives on average 2,687 mm of precipitation per year, spread over about 297 rainy days.
Is it sunny in Bintulu?
Bintulu gets on average 9.4 hours of sunshine per day, roughly 3,431 hours per year over 1940-2025.
Are there tropical nights in Bintulu?
Yes: Bintulu has on average 365 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Bintulu?
In Bintulu, between 1940 and 2025, the highest apparent temperature reached 43.1 °C on 29 May 2020, and the lowest was 23.3 °C on 23 January 1940.
Compare Bintulu with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Bintulu