Serang climate — normals and trends

Q: What is the climate of Serang?

Serang has a tropical rainforest climate (Köppen Af). Over 1940-2025, the average annual temperature is 27.2 °C and it receives 1,870 mm of precipitation per year.

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

The hottest day measured in Serang between 1940 and 2025 was 17 October 2023, reaching 34.1 °C.

Q: What is the coldest day in Serang?

The coldest day measured in Serang between 1940 and 2025 was 11 August 1961, at 21.2 °C.

Q: Does it snow in Serang?

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

Q: Has the climate of Serang warmed?

Yes: Serang warmed by +1.5 °C between 1940 and 2025, a statistically significant trend.

Q: What is the wettest day in Serang?

The wettest day measured in Serang between 1940 and 2025 was 9 November 1978, with 166 mm of rain in 24 hours.

Q: What was the windiest day in Serang?

The windiest day measured in Serang between 1940 and 2025 was 30 November 2017, with winds reaching 31.7 km/h.

Q: What is the warmest month in Serang?

The warmest month in Serang is May (27.6 °C on average); the coldest is January (26.7 °C).

Q: How much does it rain in Serang?

Serang receives on average 1,870 mm of precipitation per year, spread over about 271 rainy days.

Q: Is it sunny in Serang?

Serang gets on average 10.5 hours of sunshine per day, roughly 3,833 hours per year over 1940-2025.

Serang (Indonesia) has a tropical rainforest climate (Af) under the Köppen-Geiger classification. Its mean annual temperature is 27.2 °C and it receives 1,870 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 (27.6 °C on average) and the coldest is January (26.7 °C). Rainfall peaks in January.

Serang averages 0 frost days, 175 hot days (≥ 30 °C) and 271 rainy days per year.

Serang has warmed by +1.5 °C between 1940 and 2025, or +0.17 °C per decade. This trend is statistically significant.

The hottest day of the period reached 34.1 °C (on 17 October 2023) and the coldest 21.2 °C (on 11 August 1961).

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

SerangBanten

coords: -6.12°, 106.15°
period: 1940–2025 · 86 yrs

AfTropical rainforestWarmest monthMayColdest monthJanuaryWettest monthJanuaryDriest monthAugust

Mean daily temperature

27.2°C

Average daily high

29.8°C

Average daily low

25.1°C

Annual rainfall

1,870mm

Sunshine / day

10.5h

Mean relative humidity

83%

Average peak wind

12.5km/h

Seasonal range

0.9°C

Frost days (< 0 °C)

0 d/yr

Hot days (≥ 30 °C)

175 d/yr

Rainy days (≥ 1 mm)

271 d/yr

Annual snowfall

0.0 cm

Average feels-like high

35.6 °C

Average feels-like low

29.8 °C

Average peak gust

24.6 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

+1.5 °C

since 1940

+0.2 °C per decade · r² = 0.79 · 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

34.1 °C

17 October 2023

Coldest day

21.2 °C

11 August 1961

Wettest day

166 mm

9 November 1978

Windiest day

31.7 km/h

30 November 2017

Strongest gust

60.8 km/h

9 February 2001

Hottest feels-like

41.3 °C

25 April 2010

Coldest feels-like

23.9 °C

15 August 2002

Sunniest day

12.1 h

28 November 1955

Year	Hottest day	Coldest day	Annual mean	Rainfall	Hot days
2025	33.3 °C9 May 2025	24.2 °C15 August 2025	28.0 °C	2,356 mm	271
2024	33.7 °C26 October 2024	24.2 °C7 July 2024	28.4 °C	2,044 mm	314
2023	34.1 °C17 October 2023	23.9 °C31 August 2023	28.1 °C	1,493 mm	276
2022	33.1 °C25 April 2022	23.6 °C30 June 2022	27.7 °C	2,066 mm	248
2021	33.2 °C18 December 2021	23.6 °C28 July 2021	27.8 °C	2,015 mm	239
2020	32.7 °C10 March 2020	22.9 °C2 August 2020	27.9 °C	2,306 mm	255
2019	33.4 °C9 November 2019	23.1 °C18 July 2019	28.0 °C	1,520 mm	292
2018	33.6 °C16 November 2018	22.7 °C30 July 2018	27.8 °C	1,617 mm	255
2017	33.2 °C24 October 2017	24.3 °C21 September 2017	27.9 °C	1,795 mm	268
2016	32.9 °C24 March 2016	23.8 °C5 August 2016	28.1 °C	2,744 mm	291
2015	32.6 °C22 October 2015	23.2 °C5 August 2015	27.8 °C	1,624 mm	255
2014	33.2 °C10 October 2014	23.7 °C6 September 2014	27.7 °C	1,901 mm	257
2013	33.1 °C28 March 2013	24.1 °C14 August 2013	27.7 °C	2,365 mm	237
2012	32.8 °C2 May 2012	23.6 °C10 August 2012	27.7 °C	1,733 mm	263
2011	32.0 °C9 May 2011	23.7 °C18 July 2011	27.6 °C	1,489 mm	219
2010	32.9 °C29 April 2010	24.1 °C15 January 2010	27.7 °C	2,521 mm	241
2009	32.9 °C14 September 2009	23.1 °C14 July 2009	27.7 °C	1,771 mm	247
2008	31.9 °C17 September 2008	23.4 °C21 July 2008	27.4 °C	1,923 mm	203
2007	32.7 °C26 November 2007	23.1 °C28 July 2007	27.6 °C	1,679 mm	228
2006	32.7 °C30 September 2006	22.3 °C12 August 2006	27.6 °C	1,744 mm	251
2005	32.9 °C8 April 2005	23.5 °C20 July 2005	27.5 °C	1,761 mm	220
2004	32.9 °C27 March 2004	22.2 °C4 June 2004	27.6 °C	1,680 mm	231
2003	32.4 °C16 May 2003	22.6 °C6 August 2003	27.5 °C	1,739 mm	222
2002	32.9 °C23 October 2002	21.5 °C15 August 2002	27.5 °C	1,569 mm	220
2001	32.2 °C18 September 2001	22.5 °C4 July 2001	27.1 °C	2,026 mm	169
2000	32.5 °C20 October 2000	22.4 °C20 August 2000	27.2 °C	1,918 mm	182
1999	31.8 °C1 April 1999	22.7 °C24 July 1999	27.2 °C	1,871 mm	187
1998	33.2 °C8 October 1998	24.3 °C12 July 1998	27.7 °C	2,872 mm	270
1997	33.9 °C1 November 1997	22.6 °C21 July 1997	27.6 °C	1,177 mm	259
1996	32.0 °C8 April 1996	23.7 °C4 August 1996	27.3 °C	2,176 mm	208
1995	32.3 °C17 May 1995	23.1 °C30 July 1995	27.5 °C	2,375 mm	251
1994	32.9 °C25 October 1994	22.2 °C15 August 1994	27.4 °C	1,691 mm	224
1993	32.2 °C19 November 1993	23.5 °C5 September 1993	27.2 °C	2,155 mm	216
1992	32.6 °C10 June 1992	22.9 °C21 July 1992	26.9 °C	2,536 mm	167
1991	32.5 °C1 October 1991	22.7 °C19 August 1991	27.1 °C	1,808 mm	157
1990	33.2 °C21 April 1990	23.2 °C28 July 1990	27.1 °C	2,014 mm	172
1989	32.3 °C14 April 1989	23.0 °C9 August 1989	27.1 °C	2,073 mm	170
1988	32.4 °C22 September 1988	23.5 °C5 July 1988	27.3 °C	1,997 mm	202
1987	32.9 °C20 September 1987	22.3 °C16 July 1987	27.4 °C	1,730 mm	217
1986	32.0 °C2 December 1986	22.4 °C1 August 1986	27.0 °C	2,153 mm	149
1985	32.1 °C26 February 1985	22.8 °C7 July 1985	27.1 °C	1,841 mm	153
1984	32.2 °C9 October 1984	22.1 °C17 September 1984	26.9 °C	2,467 mm	123
1983	32.6 °C6 October 1983	23.5 °C10 June 1983	27.5 °C	2,357 mm	218
1982	32.6 °C3 November 1982	22.9 °C22 August 1982	27.2 °C	1,768 mm	171
1981	31.8 °C24 May 1981	23.4 °C14 January 1981	27.1 °C	2,359 mm	165
1980	32.2 °C8 October 1980	23.4 °C6 August 1980	27.2 °C	1,976 mm	194
1979	32.9 °C16 October 1979	23.1 °C23 June 1979	27.1 °C	2,206 mm	201
1978	32.2 °C6 April 1978	23.2 °C17 July 1978	27.1 °C	2,507 mm	168
1977	32.9 °C26 October 1977	22.8 °C5 September 1977	27.1 °C	1,913 mm	158
1976	32.5 °C21 October 1976	22.2 °C19 July 1976	26.9 °C	1,594 mm	138
1975	31.4 °C21 May 1975	23.3 °C27 July 1975	26.8 °C	1,947 mm	119
1974	32.8 °C19 October 1974	23.1 °C29 June 1974	26.7 °C	1,962 mm	122
1973	32.0 °C8 October 1973	23.4 °C23 September 1973	27.0 °C	2,606 mm	161
1972	33.7 °C18 October 1972	22.8 °C25 June 1972	27.0 °C	1,403 mm	155
1971	32.1 °C11 May 1971	23.2 °C23 November 1971	26.7 °C	1,802 mm	117
1970	32.6 °C28 April 1970	23.3 °C21 July 1970	27.0 °C	1,905 mm	163
1969	32.2 °C16 August 1969	22.7 °C27 January 1969	27.3 °C	1,417 mm	208
1968	32.4 °C1 April 1968	22.9 °C11 November 1968	26.6 °C	2,036 mm	123
1967	33.1 °C13 October 1967	22.9 °C8 August 1967	26.8 °C	1,669 mm	156
1966	32.1 °C11 May 1966	23.2 °C24 July 1966	27.1 °C	1,800 mm	145
1965	32.4 °C21 October 1965	22.5 °C31 August 1965	27.0 °C	1,611 mm	181
1964	32.5 °C22 September 1964	23.2 °C28 June 1964	27.1 °C	1,942 mm	190
1963	33.4 °C2 October 1963	22.7 °C1 August 1963	27.3 °C	1,442 mm	217
1962	32.1 °C10 May 1962	23.1 °C25 June 1962	27.0 °C	2,266 mm	155
1961	32.4 °C29 September 1961	21.2 °C11 August 1961	27.1 °C	1,665 mm	200
1960	32.2 °C17 December 1960	23.5 °C24 June 1960	27.1 °C	1,893 mm	185
1959	32.6 °C21 October 1959	23.2 °C22 July 1959	27.0 °C	2,047 mm	129
1958	32.2 °C22 November 1958	23.5 °C24 September 1958	27.2 °C	2,370 mm	195
1957	32.9 °C9 November 1957	22.9 °C18 August 1957	27.1 °C	1,702 mm	156
1956	32.1 °C8 May 1956	22.5 °C26 July 1956	26.6 °C	1,649 mm	105
1955	31.8 °C7 October 1955	22.7 °C31 July 1955	26.4 °C	2,141 mm	71
1954	32.0 °C27 April 1954	22.7 °C13 September 1954	26.4 °C	2,073 mm	58
1953	32.4 °C19 October 1953	22.9 °C2 September 1953	27.0 °C	1,234 mm	138
1952	31.6 °C25 April 1952	23.1 °C15 August 1952	26.7 °C	1,868 mm	68
1951	32.0 °C13 November 1951	22.9 °C30 July 1951	26.8 °C	1,596 mm	96
1950	31.2 °C10 November 1950	22.4 °C22 November 1950	26.6 °C	1,667 mm	59
1949	33.1 °C21 November 1949	22.8 °C20 July 1949	27.1 °C	706 mm	192
1948	31.5 °C3 November 1948	22.8 °C7 January 1948	26.9 °C	968 mm	65
1947	31.0 °C20 May 1947	23.3 °C9 July 1947	26.6 °C	1,519 mm	35
1946	31.3 °C27 October 1946	22.1 °C28 May 1946	26.4 °C	1,345 mm	36
1945	31.3 °C20 October 1945	22.7 °C5 April 1945	26.2 °C	1,567 mm	21
1944	31.2 °C10 October 1944	22.2 °C10 June 1944	26.2 °C	1,706 mm	16
1943	31.0 °C7 September 1943	22.2 °C31 March 1943	26.2 °C	1,356 mm	19
1942	30.4 °C26 August 1942	22.6 °C10 July 1942	26.1 °C	1,986 mm	11
1941	31.0 °C16 September 1941	22.6 °C25 July 1941	26.5 °C	1,594 mm	41
1940	31.8 °C4 November 1940	22.6 °C1 September 1940	26.5 °C	1,339 mm	48

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

30.6 °C

+0.8 °C

Hot days (≥ 30 °C)

271 d/yr

+96

Frost days (< 0 °C)

0 d/yr

Annual rainfall

2356 mm

+486 mm

Month by month

	High	vs. normal	Precipitation	vs. normal
Jan	30.0 °C	+0.9 °C	348 mm	+95 mm
Feb	30.3 °C	+1.1 °C	216 mm	-27 mm
Mar	30.7 °C	+1.0 °C	204 mm	-7 mm
Apr	30.5 °C	+0.4 °C	278 mm	+98 mm
May	31.3 °C	+1.0 °C	166 mm	+34 mm
Jun	30.4 °C	+0.4 °C	187 mm	+91 mm
Jul	30.5 °C	+0.8 °C	58 mm	-19 mm
Aug	30.2 °C	+0.5 °C	172 mm	+105 mm
Sep	30.6 °C	+0.5 °C	102 mm	+21 mm
Oct	31.3 °C	+0.9 °C	167 mm	+40 mm
Nov	30.6 °C	+0.6 °C	223 mm	+41 mm
Dec	30.2 °C	+0.7 °C	236 mm	+16 mm

The year's extremes

Hottest day

33.3 °C

9 May 2025

Coldest day

24.2 °C

15 Aug 2025

Wettest day

98.2 mm

9 Jan 2025

Windiest day

23.5 km/h

29 Mar 2025

Strongest gust

44.6 km/h

5 Feb 2025

Hottest feels-like

40.8 °C

4 Oct 2025

Coldest feels-like

28.5 °C

19 Dec 2025

Sunniest day

12.0 h

3 Jan 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 Serang?

Serang has a tropical rainforest climate (Köppen Af). Over 1940-2025, the average annual temperature is 27.2 °C and it receives 1,870 mm of precipitation per year.

What is the hottest day ever recorded in Serang?

The hottest day measured in Serang between 1940 and 2025 was 17 October 2023, reaching 34.1 °C.

What is the coldest day in Serang?

The coldest day measured in Serang between 1940 and 2025 was 11 August 1961, at 21.2 °C.

Does it snow in Serang?

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

Has the climate of Serang warmed?

Yes: Serang warmed by +1.5 °C between 1940 and 2025, a statistically significant trend.

What is the wettest day in Serang?

The wettest day measured in Serang between 1940 and 2025 was 9 November 1978, with 166 mm of rain in 24 hours.

What was the windiest day in Serang?

The windiest day measured in Serang between 1940 and 2025 was 30 November 2017, with winds reaching 31.7 km/h.

What is the warmest month in Serang?

The warmest month in Serang is May (27.6 °C on average); the coldest is January (26.7 °C).

How much does it rain in Serang?

Serang receives on average 1,870 mm of precipitation per year, spread over about 271 rainy days.

Is it sunny in Serang?

Serang gets on average 10.5 hours of sunshine per day, roughly 3,833 hours per year over 1940-2025.

Are there tropical nights in Serang?

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

What was the most extreme apparent temperature in Serang?

In Serang, between 1940 and 2025, the highest apparent temperature reached 41.3 °C on 25 April 2010, and the lowest was 23.9 °C on 15 August 2002.

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