Bertam climate — normals and trends
Bertam (Malaysia) has a tropical rainforest climate (Af) under the Köppen-Geiger classification. Its mean annual temperature is 26.8 °C and it receives 2,021 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 (27.4 °C on average) and the coldest is January (26.1 °C). Rainfall peaks in November.
Bertam averages 0 frost days, 77 hot days (≥ 30 °C) and 280 rainy days per year.
Bertam has warmed by +1.6 °C between 1940 and 2025, or +0.18 °C per decade. This trend is statistically significant.
The hottest day of the period reached 34.0 °C (on 2 March 1998) and the coldest 21.6 °C (on 8 February 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
BertamMelaka
- coords
- 2.29°, 102.19°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
26.8°C
Average daily high
29.1°C
Average daily low
24.8°C
Annual rainfall
2,021mm
Sunshine / day
10.3h
Mean relative humidity
82%
Average peak wind
13.9km/h
Seasonal range
1.3°C
Frost days (< 0 °C)
0 d/yr
Hot days (≥ 30 °C)
77 d/yr
Rainy days (≥ 1 mm)
280 d/yr
Annual snowfall
0.0 cm
Average feels-like high
34.7 °C
Average feels-like low
28.8 °C
Average peak gust
26.5 km/h
Tropical nights (≥ 20 °C)
365 d/yr
Solar radiation
19.0 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.6 °C
since 1940
+0.2 °C per decade · r² = 0.80 · 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
34.0 °C
2 March 1998
Coldest day
21.6 °C
8 February 1940
Wettest day
252 mm
26 December 2014
Windiest day
36.6 km/h
13 December 1944
Strongest gust
65.2 km/h
28 December 2001
Hottest feels-like
40.8 °C
13 March 2016
Coldest feels-like
21.3 °C
12 February 1943
Sunniest day
12.0 h
26 September 1940
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 | 28.8 °C | -0.1 °C | 176 mm | +82 mm |
| Feb | 30.0 °C | +0.4 °C | 53 mm | -22 mm |
| Mar | 30.0 °C | +0.2 °C | 148 mm | +17 mm |
| Apr | 30.0 °C | +0.4 °C | 338 mm | +152 mm |
| May | 30.4 °C | +0.9 °C | 169 mm | -31 mm |
| Jun | 30.4 °C | +1.0 °C | 72 mm | -85 mm |
| Jul | 30.4 °C | +1.4 °C | 80 mm | -84 mm |
| Aug | 29.6 °C | +0.8 °C | 177 mm | -9 mm |
| Sep | 29.4 °C | +0.7 °C | 172 mm | -25 mm |
| Oct | 30.1 °C | +1.3 °C | 180 mm | -38 mm |
| Nov | 29.7 °C | +1.0 °C | 273 mm | +35 mm |
| Dec | 29.2 °C | +0.6 °C | 300 mm | +125 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 Bertam?
Bertam has a tropical rainforest climate (Köppen Af). Over 1940-2025, the average annual temperature is 26.8 °C and it receives 2,021 mm of precipitation per year.
What is the hottest day ever recorded in Bertam?
The hottest day measured in Bertam between 1940 and 2025 was 2 March 1998, reaching 34.0 °C.
What is the coldest day in Bertam?
The coldest day measured in Bertam between 1940 and 2025 was 8 February 1940, at 21.6 °C.
Does it snow in Bertam?
Almost never: Bertam sees virtually no snow, with about 0 frost days per year.
Has the climate of Bertam warmed?
Yes: Bertam warmed by +1.6 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Bertam?
The wettest day measured in Bertam between 1940 and 2025 was 26 December 2014, with 252 mm of rain in 24 hours.
What was the windiest day in Bertam?
The windiest day measured in Bertam between 1940 and 2025 was 13 December 1944, with winds reaching 36.6 km/h.
What is the warmest month in Bertam?
The warmest month in Bertam is May (27.4 °C on average); the coldest is January (26.1 °C).
How much does it rain in Bertam?
Bertam receives on average 2,021 mm of precipitation per year, spread over about 280 rainy days.
Is it sunny in Bertam?
Bertam gets on average 10.3 hours of sunshine per day, roughly 3,760 hours per year over 1940-2025.
Are there tropical nights in Bertam?
Yes: Bertam has on average 365 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Bertam?
In Bertam, between 1940 and 2025, the highest apparent temperature reached 40.8 °C on 13 March 2016, and the lowest was 21.3 °C on 12 February 1943.
Compare Bertam with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Bertam