Relau climate — normals and trends

Q: What is the climate of Relau?

Relau has a tropical rainforest climate (Köppen Af). Over 1940-2025, the average annual temperature is 27.3 °C and it receives 2,274 mm of precipitation per year.

Q: What is the hottest day ever recorded in Relau?

The hottest day measured in Relau between 1940 and 2025 was 26 February 2016, reaching 33.8 °C.

Q: What is the coldest day in Relau?

The coldest day measured in Relau between 1940 and 2025 was 15 January 1963, at 22.2 °C.

Q: Does it snow in Relau?

Almost never: Relau sees virtually no snow, with about 0 frost days per year.

Q: Has the climate of Relau warmed?

Yes: Relau warmed by +1.4 °C between 1940 and 2025, a statistically significant trend.

Q: What is the wettest day in Relau?

The wettest day measured in Relau between 1940 and 2025 was 22 November 2000, with 195 mm of rain in 24 hours.

Q: What was the windiest day in Relau?

The windiest day measured in Relau between 1940 and 2025 was 17 September 2024, with winds reaching 30.9 km/h.

Q: What is the warmest month in Relau?

The warmest month in Relau is June (28.1 °C on average); the coldest is November (26.6 °C).

Q: How much does it rain in Relau?

Relau receives on average 2,274 mm of precipitation per year, spread over about 291 rainy days.

Q: Is it sunny in Relau?

Relau gets on average 10.1 hours of sunshine per day, roughly 3,687 hours per year over 1940-2025.

Relau (Malaysia) has a tropical rainforest climate (Af) under the Köppen-Geiger classification. Its mean annual temperature is 27.3 °C and it receives 2,274 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 June (28.1 °C on average) and the coldest is November (26.6 °C). Rainfall peaks in October.

Relau averages 0 frost days, 120 hot days (≥ 30 °C) and 291 rainy days per year.

Relau has warmed by +1.4 °C between 1940 and 2025, or +0.17 °C per decade. This trend is statistically significant.

The hottest day of the period reached 33.8 °C (on 26 February 2016) and the coldest 22.2 °C (on 15 January 1963).

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

RelauPenang

coords: 5.33°, 100.28°
period: 1940–2025 · 86 yrs

AfTropical rainforestWarmest monthJuneColdest monthNovemberWettest monthOctoberDriest monthFebruary

Mean daily temperature

27.3°C

Average daily high

29.4°C

Average daily low

25.5°C

Annual rainfall

2,274mm

Sunshine / day

10.1h

Mean relative humidity

81%

Average peak wind

13.1km/h

Seasonal range

1.5°C

Frost days (< 0 °C)

0 d/yr

Hot days (≥ 30 °C)

120 d/yr

Rainy days (≥ 1 mm)

291 d/yr

Annual snowfall

0.0 cm

Average feels-like high

35.4 °C

Average feels-like low

30.1 °C

Average peak gust

24.6 km/h

Tropical nights (≥ 20 °C)

365 d/yr

Solar radiation

19.1 MJ/m²

Has the climate changed?

One stripe per year, 1940 to 2025

+1.4 °C

since 1940

+0.2 °C per decade · r² = 0.72 · p = < 0.001

19402025

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

33.8 °C

26 February 2016

Coldest day

22.2 °C

15 January 1963

Wettest day

195 mm

22 November 2000

Windiest day

30.9 km/h

17 September 2024

Strongest gust

60.5 km/h

7 May 1986

Hottest feels-like

41.3 °C

25 May 2024

Coldest feels-like

22.2 °C

6 December 1944

Sunniest day

12.3 h

15 July 1946

Year	Hottest day	Coldest day	Annual mean	Rainfall	Hot days
2025	32.9 °C2 August 2025	24.7 °C15 September 2025	28.0 °C	2,412 mm	208
2024	33.0 °C25 May 2024	25.0 °C25 August 2024	28.4 °C	3,493 mm	252
2023	33.1 °C11 May 2023	24.1 °C17 January 2023	28.0 °C	3,141 mm	198
2022	32.0 °C21 May 2022	24.6 °C9 December 2022	27.8 °C	2,675 mm	170
2021	33.0 °C18 February 2021	24.7 °C23 June 2021	27.9 °C	2,451 mm	190
2020	32.4 °C19 May 2020	24.7 °C11 September 2020	28.1 °C	2,289 mm	220
2019	33.1 °C3 May 2019	25.0 °C2 October 2019	28.2 °C	1,974 mm	224
2018	32.1 °C12 June 2018	24.1 °C12 January 2018	27.8 °C	2,470 mm	153
2017	31.9 °C5 July 2017	24.6 °C25 January 2017	27.8 °C	2,777 mm	171
2016	33.8 °C26 February 2016	24.8 °C2 December 2016	28.3 °C	2,518 mm	224
2015	32.1 °C7 April 2015	24.3 °C19 February 2015	27.8 °C	2,142 mm	185
2014	32.8 °C11 March 2014	23.4 °C22 January 2014	27.8 °C	2,521 mm	183
2013	32.9 °C24 June 2013	24.5 °C24 October 2013	27.8 °C	2,396 mm	161
2012	31.7 °C13 June 2012	24.2 °C19 February 2012	27.5 °C	2,789 mm	136
2011	32.3 °C9 May 2011	23.6 °C21 January 2011	27.5 °C	2,720 mm	132
2010	33.5 °C17 March 2010	24.6 °C15 December 2010	28.0 °C	2,800 mm	207
2009	32.2 °C3 August 2009	23.7 °C11 January 2009	27.6 °C	2,591 mm	154
2008	31.7 °C18 February 2008	24.3 °C9 January 2008	27.3 °C	2,842 mm	97
2007	32.0 °C21 June 2007	23.4 °C1 February 2007	27.5 °C	2,792 mm	143
2006	32.4 °C9 February 2006	24.5 °C16 April 2006	27.6 °C	2,552 mm	151
2005	32.7 °C21 February 2005	24.4 °C7 January 2005	28.2 °C	2,071 mm	224
2004	32.5 °C9 May 2004	24.2 °C11 September 2004	27.9 °C	1,956 mm	187
2003	32.9 °C9 May 2003	24.4 °C15 October 2003	27.9 °C	2,251 mm	177
2002	32.3 °C15 April 2002	24.1 °C4 January 2002	28.0 °C	1,781 mm	209
2001	32.3 °C9 July 2001	24.2 °C4 January 2001	27.5 °C	2,427 mm	121
2000	31.7 °C2 September 2000	23.7 °C27 January 2000	27.4 °C	2,889 mm	112
1999	31.3 °C26 July 1999	23.0 °C25 December 1999	27.2 °C	2,732 mm	65
1998	32.7 °C23 April 1998	24.6 °C2 December 1998	27.9 °C	2,721 mm	180
1997	31.6 °C18 May 1997	23.7 °C3 January 1997	27.4 °C	2,166 mm	102
1996	31.6 °C20 June 1996	22.8 °C4 January 1996	27.2 °C	2,628 mm	98
1995	32.0 °C16 March 1995	24.1 °C3 December 1995	27.5 °C	2,523 mm	129
1994	32.1 °C31 July 1994	24.1 °C29 January 1994	27.4 °C	2,116 mm	102
1993	31.5 °C13 June 1993	23.4 °C31 January 1993	27.2 °C	2,523 mm	80
1992	31.5 °C20 March 1992	23.9 °C16 January 1992	27.3 °C	2,062 mm	98
1991	32.1 °C23 February 1991	23.9 °C20 October 1991	27.5 °C	2,203 mm	139
1990	32.1 °C22 May 1990	24.3 °C7 December 1990	27.6 °C	2,033 mm	153
1989	31.3 °C11 June 1989	23.9 °C29 January 1989	27.2 °C	2,289 mm	84
1988	31.8 °C7 June 1988	23.5 °C17 December 1988	27.4 °C	2,731 mm	129
1987	31.8 °C9 June 1987	24.3 °C15 January 1987	27.5 °C	2,465 mm	136
1986	32.4 °C10 February 1986	23.8 °C15 December 1986	27.2 °C	2,520 mm	91
1985	32.1 °C24 June 1985	23.9 °C21 July 1985	27.1 °C	2,423 mm	83
1984	31.3 °C21 June 1984	23.8 °C28 January 1984	26.9 °C	2,509 mm	59
1983	32.2 °C18 April 1983	24.1 °C31 December 1983	27.7 °C	1,741 mm	191
1982	31.5 °C9 September 1982	23.9 °C5 February 1982	27.4 °C	1,827 mm	140
1981	32.2 °C20 June 1981	23.0 °C14 January 1981	27.5 °C	1,803 mm	149
1980	32.0 °C18 February 1980	23.9 °C23 September 1980	27.5 °C	2,029 mm	155
1979	32.2 °C11 August 1979	23.5 °C30 August 1979	27.5 °C	2,051 mm	179
1978	32.2 °C13 May 1978	24.1 °C22 February 1978	27.5 °C	1,759 mm	171
1977	31.8 °C18 April 1977	22.8 °C18 February 1977	27.4 °C	1,618 mm	144
1976	32.0 °C26 May 1976	23.0 °C20 January 1976	27.0 °C	1,953 mm	106
1975	31.9 °C20 June 1975	23.0 °C25 December 1975	27.2 °C	1,871 mm	133
1974	31.6 °C13 June 1974	23.4 °C6 January 1974	27.2 °C	1,596 mm	135
1973	32.2 °C30 January 1973	22.8 °C30 December 1973	27.4 °C	2,107 mm	159
1972	31.7 °C13 July 1972	22.9 °C2 January 1972	27.1 °C	2,181 mm	75
1971	31.9 °C16 March 1971	23.4 °C24 February 1971	26.8 °C	2,234 mm	69
1970	32.6 °C30 April 1970	23.7 °C28 December 1970	27.4 °C	2,088 mm	144
1969	31.9 °C29 May 1969	23.9 °C5 December 1969	27.3 °C	2,197 mm	135
1968	31.2 °C3 March 1968	23.1 °C28 January 1968	27.0 °C	1,941 mm	75
1967	31.2 °C6 August 1967	22.5 °C19 January 1967	26.8 °C	2,055 mm	59
1966	31.1 °C30 April 1966	23.8 °C14 January 1966	26.8 °C	2,449 mm	28
1965	31.3 °C30 May 1965	22.9 °C14 January 1965	26.8 °C	2,319 mm	60
1964	32.2 °C22 February 1964	23.4 °C7 December 1964	27.1 °C	2,590 mm	150
1963	32.6 °C26 April 1963	22.2 °C15 January 1963	27.3 °C	1,647 mm	149
1962	32.8 °C14 July 1962	23.3 °C7 February 1962	27.3 °C	1,909 mm	139
1961	32.8 °C25 May 1961	22.8 °C19 January 1961	27.3 °C	1,647 mm	170
1960	32.9 °C14 February 1960	23.8 °C3 January 1960	27.2 °C	1,934 mm	137
1959	31.8 °C18 March 1959	23.7 °C18 December 1959	27.0 °C	2,132 mm	63
1958	32.3 °C15 April 1958	22.9 °C29 November 1958	27.2 °C	2,042 mm	122
1957	31.3 °C14 June 1957	22.9 °C5 January 1957	26.8 °C	2,158 mm	45
1956	30.7 °C27 April 1956	22.8 °C23 January 1956	26.5 °C	2,282 mm	30
1955	31.5 °C12 May 1955	23.0 °C13 February 1955	26.8 °C	2,361 mm	73
1954	31.0 °C7 June 1954	23.2 °C23 November 1954	26.5 °C	2,862 mm	11
1953	30.9 °C3 July 1953	23.3 °C2 January 1953	26.8 °C	2,500 mm	39
1952	31.1 °C10 July 1952	23.3 °C16 December 1952	27.0 °C	2,168 mm	55
1951	31.5 °C23 June 1951	23.7 °C2 January 1951	27.1 °C	1,512 mm	75
1950	30.8 °C20 February 1950	23.8 °C23 December 1950	26.9 °C	2,205 mm	40
1949	32.0 °C7 January 1949	24.0 °C8 December 1949	27.8 °C	299 mm	205
1948	30.7 °C11 June 1948	23.5 °C7 January 1948	26.6 °C	1,667 mm	9
1947	30.3 °C13 June 1947	23.3 °C26 December 1947	26.3 °C	2,819 mm	3
1946	31.3 °C21 June 1946	23.5 °C29 January 1946	26.6 °C	2,309 mm	38
1945	30.1 °C6 September 1945	23.0 °C29 December 1945	26.3 °C	2,886 mm	2
1944	31.1 °C15 June 1944	23.0 °C6 December 1944	26.6 °C	2,047 mm	17
1943	31.4 °C27 May 1943	22.9 °C8 January 1943	26.4 °C	2,176 mm	31
1942	30.8 °C16 May 1942	23.2 °C15 December 1942	26.3 °C	2,512 mm	15
1941	30.3 °C29 May 1941	23.4 °C27 September 1941	26.4 °C	2,731 mm	7
1940	31.0 °C22 August 1940	22.6 °C24 January 1940	26.6 °C	1,988 mm	29

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?

Year

Across the whole year

Average daily high

30.1 °C

+0.7 °C

Hot days (≥ 30 °C)

208 d/yr

+88

Frost days (< 0 °C)

0 d/yr

Annual rainfall

2412 mm

+138 mm

Month by month

	High	vs. normal	Precipitation	vs. normal
Jan	29.4 °C	+0.3 °C	179 mm	+63 mm
Feb	29.6 °C	0.0 °C	118 mm	+10 mm
Mar	30.2 °C	+0.4 °C	140 mm	-20 mm
Apr	30.3 °C	+0.4 °C	270 mm	+70 mm
May	30.7 °C	+0.7 °C	231 mm	+23 mm
Jun	30.7 °C	+0.6 °C	113 mm	-29 mm
Jul	31.1 °C	+1.2 °C	53 mm	-99 mm
Aug	30.5 °C	+0.9 °C	130 mm	-54 mm
Sep	30.2 °C	+1.1 °C	203 mm	-24 mm
Oct	29.5 °C	+0.8 °C	355 mm	+47 mm
Nov	28.7 °C	+0.1 °C	533 mm	+256 mm
Dec	29.8 °C	+1.1 °C	86 mm	-105 mm

The year's extremes

Hottest day

32.9 °C

2 Aug 2025

Coldest day

24.7 °C

15 Sep 2025

Wettest day

92.0 mm

24 Nov 2025

Windiest day

30.7 km/h

24 Nov 2025

Strongest gust

49.3 km/h

24 Nov 2025

Hottest feels-like

39.7 °C

19 Jun 2025

Coldest feels-like

26.4 °C

13 Jan 2025

Sunniest day

12.2 h

5 Jul 2025

What was the weather like that day?

Your birthday, a wedding, a memorable trip: discover the actual weather for any date since 1940.

Date

Frequently asked questions

What is the climate of Relau?

Relau has a tropical rainforest climate (Köppen Af). Over 1940-2025, the average annual temperature is 27.3 °C and it receives 2,274 mm of precipitation per year.

What is the hottest day ever recorded in Relau?

The hottest day measured in Relau between 1940 and 2025 was 26 February 2016, reaching 33.8 °C.

What is the coldest day in Relau?

The coldest day measured in Relau between 1940 and 2025 was 15 January 1963, at 22.2 °C.

Does it snow in Relau?

Almost never: Relau sees virtually no snow, with about 0 frost days per year.

Has the climate of Relau warmed?

Yes: Relau warmed by +1.4 °C between 1940 and 2025, a statistically significant trend.

What is the wettest day in Relau?

The wettest day measured in Relau between 1940 and 2025 was 22 November 2000, with 195 mm of rain in 24 hours.

What was the windiest day in Relau?

The windiest day measured in Relau between 1940 and 2025 was 17 September 2024, with winds reaching 30.9 km/h.

What is the warmest month in Relau?

The warmest month in Relau is June (28.1 °C on average); the coldest is November (26.6 °C).

How much does it rain in Relau?

Relau receives on average 2,274 mm of precipitation per year, spread over about 291 rainy days.

Is it sunny in Relau?

Relau gets on average 10.1 hours of sunshine per day, roughly 3,687 hours per year over 1940-2025.

Are there tropical nights in Relau?

Yes: Relau has on average 365 tropical nights per year (temperature staying above 20 °C), over 1940-2025.

What was the most extreme apparent temperature in Relau?

In Relau, between 1940 and 2025, the highest apparent temperature reached 41.3 °C on 25 May 2024, and the lowest was 22.2 °C on 6 December 1944.

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