Bahau climate — normals and trends
Bahau (Malaysia) has a tropical rainforest climate (Af) under the Köppen-Geiger classification. Its mean annual temperature is 26.2 °C and it receives 1,643 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 (26.9 °C on average) and the coldest is December (25.2 °C). Rainfall peaks in November.
Bahau averages 0 frost days, 261 hot days (≥ 30 °C) and 267 rainy days per year.
Bahau has warmed by +2.3 °C between 1940 and 2025, or +0.27 °C per decade. This trend is statistically significant.
The hottest day of the period reached 39.2 °C (on 23 March 2024) and the coldest 16.7 °C (on 4 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
BahauNegeri Sembilan
- coords
- 2.81°, 102.40°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
26.2°C
Average daily high
31.0°C
Average daily low
22.9°C
Annual rainfall
1,643mm
Sunshine / day
9.8h
Mean relative humidity
83%
Average peak wind
11.0km/h
Seasonal range
1.7°C
Frost days (< 0 °C)
0 d/yr
Hot days (≥ 30 °C)
261 d/yr
Rainy days (≥ 1 mm)
267 d/yr
Annual snowfall
0.0 cm
Average feels-like high
36.4 °C
Average feels-like low
27.2 °C
Average peak gust
27.6 km/h
Tropical nights (≥ 20 °C)
363 d/yr
Solar radiation
17.9 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.3 °C
since 1940
+0.3 °C per decade · r² = 0.74 · 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
39.2 °C
23 March 2024
Coldest day
16.7 °C
4 January 1943
Wettest day
233 mm
26 December 2014
Windiest day
27.8 km/h
25 February 2016
Strongest gust
59.8 km/h
4 January 1971
Hottest feels-like
45.1 °C
16 April 2016
Coldest feels-like
17.8 °C
4 January 1943
Sunniest day
12.0 h
28 September 1941
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 | -0.2 °C | 156 mm | +56 mm |
| Feb | 31.1 °C | -0.1 °C | 53 mm | -28 mm |
| Mar | 31.5 °C | -0.6 °C | 189 mm | +62 mm |
| Apr | 31.9 °C | -0.1 °C | 234 mm | +85 mm |
| May | 32.3 °C | +0.6 °C | 159 mm | +12 mm |
| Jun | 31.8 °C | +0.3 °C | 57 mm | -46 mm |
| Jul | 32.6 °C | +1.5 °C | 49 mm | -57 mm |
| Aug | 32.1 °C | +1.1 °C | 108 mm | -20 mm |
| Sep | 31.4 °C | +0.4 °C | 146 mm | +1 mm |
| Oct | 32.9 °C | +1.8 °C | 111 mm | -65 mm |
| Nov | 31.6 °C | +1.4 °C | 297 mm | +87 mm |
| Dec | 30.2 °C | +0.8 °C | 244 mm | +71 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 Bahau?
Bahau has a tropical rainforest climate (Köppen Af). Over 1940-2025, the average annual temperature is 26.2 °C and it receives 1,643 mm of precipitation per year.
What is the hottest day ever recorded in Bahau?
The hottest day measured in Bahau between 1940 and 2025 was 23 March 2024, reaching 39.2 °C.
What is the coldest day in Bahau?
The coldest day measured in Bahau between 1940 and 2025 was 4 January 1943, at 16.7 °C.
Does it snow in Bahau?
Almost never: Bahau sees virtually no snow, with about 0 frost days per year.
Has the climate of Bahau warmed?
Yes: Bahau warmed by +2.3 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Bahau?
The wettest day measured in Bahau between 1940 and 2025 was 26 December 2014, with 233 mm of rain in 24 hours.
What was the windiest day in Bahau?
The windiest day measured in Bahau between 1940 and 2025 was 25 February 2016, with winds reaching 27.8 km/h.
What is the warmest month in Bahau?
The warmest month in Bahau is April (26.9 °C on average); the coldest is December (25.2 °C).
How much does it rain in Bahau?
Bahau receives on average 1,643 mm of precipitation per year, spread over about 267 rainy days.
Is it sunny in Bahau?
Bahau gets on average 9.8 hours of sunshine per day, roughly 3,577 hours per year over 1940-2025.
Are there tropical nights in Bahau?
Yes: Bahau has on average 363 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Bahau?
In Bahau, between 1940 and 2025, the highest apparent temperature reached 45.1 °C on 16 April 2016, and the lowest was 17.8 °C on 4 January 1943.
Compare Bahau with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Bahau