Tutong climate — normals and trends
Tutong (Brunei) has a tropical rainforest climate (Af) under the Köppen-Geiger classification. Its mean annual temperature is 26.2 °C and it receives 2,633 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 (26.9 °C on average) and the coldest is January (25.6 °C). Rainfall peaks in November.
Tutong averages 0 frost days, 103 hot days (≥ 30 °C) and 302 rainy days per year.
Tutong has warmed by +1.8 °C between 1940 and 2025, or +0.21 °C per decade. This trend is statistically significant.
The hottest day of the period reached 33.5 °C (on 10 August 2009) and the coldest 20.0 °C (on 20 January 1965).
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
TutongTutong
- coords
- 4.80°, 114.65°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
26.2°C
Average daily high
29.2°C
Average daily low
24.0°C
Annual rainfall
2,633mm
Sunshine / day
9.7h
Mean relative humidity
87%
Average peak wind
13.3km/h
Seasonal range
1.3°C
Frost days (< 0 °C)
0 d/yr
Hot days (≥ 30 °C)
103 d/yr
Rainy days (≥ 1 mm)
302 d/yr
Annual snowfall
0.0 cm
Average feels-like high
35.6 °C
Average feels-like low
28.4 °C
Average peak gust
26.0 km/h
Tropical nights (≥ 20 °C)
365 d/yr
Solar radiation
18.7 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.8 °C
since 1940
+0.2 °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
33.5 °C
10 August 2009
Coldest day
20.0 °C
20 January 1965
Wettest day
183 mm
19 March 2022
Windiest day
42.9 km/h
22 December 2024
Strongest gust
61.2 km/h
29 November 1955
Hottest feels-like
42.4 °C
28 April 2024
Coldest feels-like
22.0 °C
21 January 1950
Sunniest day
12.3 h
2 July 1956
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 | 29.5 °C | +1.2 °C | 483 mm | +267 mm |
| Feb | 29.3 °C | +0.8 °C | 251 mm | +103 mm |
| Mar | 29.7 °C | +0.7 °C | 326 mm | +162 mm |
| Apr | 30.2 °C | +0.6 °C | 195 mm | +0 mm |
| May | 30.9 °C | +1.0 °C | 217 mm | -6 mm |
| Jun | 30.9 °C | +1.1 °C | 229 mm | +21 mm |
| Jul | 31.2 °C | +1.5 °C | 88 mm | -110 mm |
| Aug | 30.2 °C | +0.5 °C | 242 mm | +32 mm |
| Sep | 30.0 °C | +0.5 °C | 374 mm | +132 mm |
| Oct | 30.2 °C | +1.1 °C | 242 mm | -34 mm |
| Nov | 29.9 °C | +1.0 °C | 243 mm | -46 mm |
| Dec | 29.6 °C | +0.9 °C | 323 mm | +60 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 Tutong?
Tutong has a tropical rainforest climate (Köppen Af). Over 1940-2025, the average annual temperature is 26.2 °C and it receives 2,633 mm of precipitation per year.
What is the hottest day ever recorded in Tutong?
The hottest day measured in Tutong between 1940 and 2025 was 10 August 2009, reaching 33.5 °C.
What is the coldest day in Tutong?
The coldest day measured in Tutong between 1940 and 2025 was 20 January 1965, at 20.0 °C.
Does it snow in Tutong?
Almost never: Tutong sees virtually no snow, with about 0 frost days per year.
Has the climate of Tutong warmed?
Yes: Tutong warmed by +1.8 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Tutong?
The wettest day measured in Tutong between 1940 and 2025 was 19 March 2022, with 183 mm of rain in 24 hours.
What was the windiest day in Tutong?
The windiest day measured in Tutong between 1940 and 2025 was 22 December 2024, with winds reaching 42.9 km/h.
What is the warmest month in Tutong?
The warmest month in Tutong is May (26.9 °C on average); the coldest is January (25.6 °C).
How much does it rain in Tutong?
Tutong receives on average 2,633 mm of precipitation per year, spread over about 302 rainy days.
Is it sunny in Tutong?
Tutong gets on average 9.7 hours of sunshine per day, roughly 3,540 hours per year over 1940-2025.
Are there tropical nights in Tutong?
Yes: Tutong has on average 365 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Tutong?
In Tutong, between 1940 and 2025, the highest apparent temperature reached 42.4 °C on 28 April 2024, and the lowest was 22.0 °C on 21 January 1950.
Compare Tutong with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Tutong