Pemalang climate

Name: Pemalang
Address: ID

Pemalang is warmest in September, with average highs of 31 °C, and coldest in July, when nights average 23 °C. December is the wettest month (460 mm) and August the driest (56 mm). Figures are 1991–2020 climate normals.

Across a full year Pemalang averages 3,084 mm of rain and 365 days above 25 °C.

Indonesia · population 184,149 · 1991–2020 normals

Temperature below 0 °C to above 30 °C Rain band height is that month’s share of the wettest month

Warmest month September 31 °C
Coldest month July 23 °C
Driest month August 56 mm
Wettest month December 460 mm
Least cloud August 60 % cloud
Hottest on record November 37 °C
Coldest on record July 19 °C
Warmest sea May 30 °C

What to expectPemalang through the year

Pemalang changes little through the year. Average daily highs stay between 30 and 31 °C, so no month stands out as a season in the way it would further from the equator.

Counted across a normal year, 365 days a year reach 25 °C, 135 of them reach 30 °C. The warmest reading in the 1991–2020 record is 37 °C, in November.

Rain is strongly seasonal. December averages 460 mm against 56 mm in August — 8.3 times as much. Planning around the dry months matters more here than planning around temperature.

The sea off Pemalang is warmest in May at 30 °C and coldest in February at 29 °C. Sea temperature lags the air by a month or two, which is why late summer swims warmer than early summer at the same air temperature.

Month by month

Month	Avg high	Rainfall	Cloud
January	28.5 °C	418 mm	92 %
February	28.4 °C	404 mm	93 %
March	29.0 °C	387 mm	88 %
April	29.4 °C	309 mm	83 %
May	29.7 °C	170 mm	69 %
June	29.7 °C	114 mm	64 %
July	29.9 °C	81 mm	61 %
August	30.7 °C	56 mm	60 %
September	31.5 °C	88 mm	64 %
October	31.1 °C	224 mm	74 %
November	29.8 °C	371 mm	86 %
December	29.1 °C	460 mm	92 %

Temperature month by month

Month	Avg high	Avg low	Mean	Record high	Record low	Days above 25 °C	Days above 30 °C
January	28.5 °C	23.8 °C	25.7 °C	31.9 °C	22.4 °C	31	4
February	28.4 °C	23.8 °C	25.7 °C	35.0 °C	21.6 °C	28	2
March	29.0 °C	24.0 °C	26.2 °C	32.8 °C	21.8 °C	31	4
April	29.4 °C	24.2 °C	26.5 °C	32.6 °C	22.3 °C	30	7
May	29.7 °C	24.2 °C	26.7 °C	33.5 °C	21.7 °C	31	10
June	29.7 °C	23.8 °C	26.5 °C	33.6 °C	21.1 °C	30	9
July	29.9 °C	23.4 °C	26.3 °C	33.8 °C	18.8 °C	31	13
August	30.7 °C	23.5 °C	26.7 °C	34.0 °C	20.7 °C	31	20
September	31.5 °C	24.1 °C	27.3 °C	35.6 °C	20.7 °C	30	25
October	31.1 °C	24.6 °C	27.4 °C	36.1 °C	22.3 °C	31	22
November	29.8 °C	24.4 °C	26.7 °C	36.7 °C	22.3 °C	30	12
December	29.1 °C	24.0 °C	26.1 °C	34.5 °C	21.6 °C	31	6

Rain, sun and wind month by month

Month	Rainfall	Wet days	Daylight	Cloud cover	Humidity	Wind	Sea temp
January	418 mm	30	12 h/day	92 %	89 %	9.9 km/h	28.9 °C
February	404 mm	28	12 h/day	93 %	89 %	10 km/h	28.6 °C
March	387 mm	30	12 h/day	88 %	88 %	8.5 km/h	29.1 °C
April	309 mm	27	12 h/day	83 %	87 %	7.4 km/h	29.7 °C
May	170 mm	21	12 h/day	69 %	85 %	7.4 km/h	29.9 °C
June	114 mm	15	12 h/day	64 %	82 %	7.9 km/h	29.6 °C
July	81 mm	12	12 h/day	61 %	78 %	8.6 km/h	29.0 °C
August	56 mm	8	12 h/day	60 %	74 %	9.3 km/h	28.7 °C
September	88 mm	12	12 h/day	64 %	72 %	9.4 km/h	28.8 °C
October	224 mm	20	12 h/day	74 %	76 %	8.7 km/h	29.2 °C
November	371 mm	27	12 h/day	86 %	84 %	7.6 km/h	29.8 °C
December	460 mm	29	13 h/day	92 %	88 %	8.2 km/h	29.5 °C

How Pemalang compares

The same four figures for nearby destinations, so the numbers above have something to be read against. Summer high is the warmest month's average high; winter low is the coldest month's average low.

Destination	Summer high	Winter low	Rain per year	Days above 25 °C
Pemalang	31 °C	23 °C	3,084 mm	365
Tegal · Indonesia	32 °C	23 °C	2,945 mm	365
Pekalongan · Indonesia	31 °C	23 °C	3,350 mm	365
Purwokerto · Indonesia	30 °C	21 °C	2,989 mm	365
Cirebon · Indonesia	32 °C	24 °C	2,051 mm	365
Cilacap · Indonesia	28 °C	23 °C	2,673 mm	365
Plumbon · Indonesia	32 °C	24 °C	2,131 mm	365

Where Pemalang ranks

Ranking	Position	Value
Warmest sea temperatures in Asia in November	9th of 50	30 °C
Warmest sea temperatures in the world in November	9th of 50	30 °C
Warmest sea temperatures in Asia in December	17th of 50	30 °C
Warmest sea temperatures in the world in December	20th of 50	30 °C
Warmest sea temperatures in Asia in January	27th of 50	29 °C
Warmest sea temperatures in Asia year-round	34th of 50	29 °C

Planning a trip? See the best time to visit Pemalang.

QuestionsCommon questions about Pemalang’s climate

When is the best time to visit Pemalang?

That depends on what you want, so the honest answer is a comparison rather than a single month. January, February, December sit closest to 20 °C on average, September is the warmest month and August the driest. The month-by-month table above has the full picture.

How hot does Pemalang get?

In September, the warmest month, daily highs average 31 °C. About 135 days a year pass 30 °C. The highest value in the 1991–2020 record is 37 °C.

How cold does it get in winter?

Nights average 23 °C in July, the coldest month. Freezing nights are not part of a normal year here.

Which month is wettest in Pemalang?

December, averaging 460 mm over 29 days with rain. The driest month is August with 56 mm. The year as a whole averages 3,084 mm.

Are these figures a forecast?

No. They are 1991–2020 climate normals: the average of thirty years, which describes what a month is usually like in Pemalang rather than what any particular week will bring. Individual years can differ substantially from the normal.

Data sources and method

ERA5 / ERA5-Land reanalysis — Copernicus Climate Change Service (C3S), ECMWF. Copernicus Licence
Open-Meteo — Open-Meteo.com. CC BY 4.0
NOAA OISST v2.1 — NOAA Physical Sciences Laboratory. Public domain
GeoNames — GeoNames.org. CC BY 4.0

Normal period: 1991–2020
Data point: -6.892°, 109.383° (the coordinates the reanalysis values are taken for)
Dataset version: era5-1991-2020-scores1.1
Last processed: 1 August 2026

Measured values come from ERA5 reanalysis and are reproduced unchanged. Calculated by us: monthly rankings, daylight hours, beach and comfort scores. Full formulas are on the methodology page.

Contains modified Copernicus Climate Change Service information 2026. Neither the European Commission nor ECMWF is responsible for any use that may be made of the Copernicus information or data it contains.