Alor Setar climate

Name: Alor Setar
Address: MY

Alor Setar is warmest in February, with average highs of 33 °C, and coldest in January, when nights average 23 °C. October is the wettest month (305 mm) and January the driest (51 mm). Figures are 1991–2020 climate normals.

Across a full year Alor Setar averages 2,232 mm of rain and 365 days above 25 °C.

Malaysia · population 417,800 · 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 February 33 °C
Coldest month January 23 °C
Driest month January 51 mm
Wettest month October 305 mm
Least cloud February 62 % cloud
Hottest on record March 39 °C
Coldest on record January 20 °C
Warmest sea May 31 °C

What to expectAlor Setar through the year

Alor Setar changes little through the year. Average daily highs stay between 31 and 33 °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, 205 of them reach 30 °C. The warmest reading in the 1991–2020 record is 39 °C, in March.

Rain is strongly seasonal. October averages 305 mm against 51 mm in January — 6.0 times as much. Planning around the dry months matters more here than planning around temperature.

The sea off Alor Setar is warmest in May at 31 °C and coldest in January at 28 °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	31.5 °C	51 mm	67 %
February	33.2 °C	56 mm	62 %
March	32.8 °C	137 mm	66 %
April	31.4 °C	205 mm	76 %
May	30.6 °C	256 mm	85 %
June	30.2 °C	190 mm	83 %
July	29.8 °C	196 mm	84 %
August	29.7 °C	235 mm	85 %
September	29.4 °C	259 mm	88 %
October	29.2 °C	305 mm	89 %
November	29.2 °C	218 mm	85 %
December	29.4 °C	123 mm	79 %

Temperature month by month

Month	Avg high	Avg low	Mean	Record high	Record low	Days above 25 °C	Days above 30 °C
January	31.5 °C	23.3 °C	26.8 °C	36.4 °C	19.8 °C	31	23
February	33.2 °C	23.8 °C	27.8 °C	37.8 °C	19.8 °C	28	27
March	32.8 °C	24.3 °C	27.9 °C	38.8 °C	20.5 °C	31	27
April	31.4 °C	24.7 °C	27.4 °C	37.7 °C	22.7 °C	30	26
May	30.6 °C	24.9 °C	27.3 °C	35.1 °C	23.2 °C	31	22
June	30.2 °C	24.8 °C	27.2 °C	33.3 °C	22.5 °C	30	18
July	29.8 °C	24.5 °C	26.9 °C	32.3 °C	22.8 °C	31	14
August	29.7 °C	24.3 °C	26.7 °C	32.7 °C	22.5 °C	31	13
September	29.4 °C	24.1 °C	26.4 °C	32.5 °C	22.3 °C	30	9
October	29.2 °C	23.8 °C	25.9 °C	33.0 °C	22.2 °C	31	7
November	29.2 °C	23.6 °C	25.8 °C	32.7 °C	22.2 °C	30	8
December	29.4 °C	23.3 °C	25.8 °C	35.9 °C	20.9 °C	31	11

Rain, sun and wind month by month

Month	Rainfall	Wet days	Daylight	Cloud cover	Humidity	Wind	Sea temp
January	51 mm	8	12 h/day	67 %	73 %	17 km/h	28.4 °C
February	56 mm	9	12 h/day	62 %	69 %	16 km/h	28.8 °C
March	137 mm	17	12 h/day	66 %	75 %	14 km/h	29.6 °C
April	205 mm	25	12 h/day	76 %	84 %	12 km/h	30.4 °C
May	256 mm	26	12 h/day	85 %	87 %	12 km/h	30.6 °C
June	190 mm	23	12 h/day	83 %	87 %	12 km/h	30.6 °C
July	196 mm	24	12 h/day	84 %	87 %	13 km/h	30.3 °C
August	235 mm	25	12 h/day	85 %	87 %	13 km/h	30.2 °C
September	259 mm	26	12 h/day	88 %	88 %	13 km/h	29.8 °C
October	305 mm	28	12 h/day	89 %	89 %	12 km/h	29.5 °C
November	218 mm	24	12 h/day	85 %	88 %	14 km/h	29.3 °C
December	123 mm	15	12 h/day	79 %	83 %	17 km/h	28.8 °C

How Alor Setar 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
Alor Setar	33 °C	23 °C	2,232 mm	365
Sungai Petani · Malaysia	31 °C	23 °C	2,396 mm	365
Kota Kuala Muda · Malaysia	31 °C	23 °C	2,419 mm	365
George Town · Malaysia	30 °C	24 °C	2,487 mm	365
Paya Terubong · Malaysia	30 °C	24 °C	2,477 mm	365
Bukit Mertajam · Malaysia	31 °C	23 °C	2,589 mm	365
Kulim · Malaysia	30 °C	22 °C	2,776 mm	365

Where Alor Setar ranks

Ranking	Position	Value
Warmest sea temperatures in Asia in April	1stof 50	30 °C
Warmest sea temperatures in the world in April	1stof 50	30 °C
Warmest sea temperatures in Asia in May	5thof 50	31 °C
Warmest sea temperatures in the world in May	6thof 50	31 °C
Warmest sea temperatures in Asia year-round	8thof 50	30 °C
Warmest sea temperatures in the world year-round	8thof 50	30 °C

Planning a trip? See the best time to visit Alor Setar.

QuestionsCommon questions about Alor Setar’s climate

When is the best time to visit Alor Setar?

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

How hot does Alor Setar get?

In February, the warmest month, daily highs average 33 °C. About 205 days a year pass 30 °C. The highest value in the 1991–2020 record is 39 °C.

How cold does it get in winter?

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

Which month is wettest in Alor Setar?

October, averaging 305 mm over 28 days with rain. The driest month is January with 51 mm. The year as a whole averages 2,232 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 Alor Setar 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
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.