Miri climate

Name: Miri
Address: MY

Miri is warmest in May, with average highs of 30 °C, and coldest in January, when nights average 24 °C. December is the wettest month (320 mm) and March the driest (140 mm). Figures are 1991–2020 climate normals.

Across a full year Miri averages 2,631 mm of rain and 365 days above 25 °C.

Malaysia · population 300,543 · 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 May 30 °C
Coldest month January 24 °C
Driest month March 140 mm
Wettest month December 320 mm
Least cloud March 81 % cloud
Hottest on record July 36 °C
Coldest on record February 20 °C
Warmest sea June 30 °C

What to expectMiri through the year

Miri changes little through the year. Average daily highs stay between 28 and 30 °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, 62 of them reach 30 °C. The warmest reading in the 1991–2020 record is 36 °C, in July.

Rain is strongly seasonal. December averages 320 mm against 140 mm in March — 2.3 times as much. Planning around the dry months matters more here than planning around temperature.

The sea off Miri is warmest in June at 30 °C and coldest in February at 27 °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	28.3 °C	236 mm	86 %
February	28.4 °C	154 mm	84 %
March	28.9 °C	140 mm	81 %
April	29.5 °C	181 mm	81 %
May	29.7 °C	205 mm	84 %
June	29.5 °C	202 mm	83 %
July	29.4 °C	195 mm	83 %
August	29.4 °C	198 mm	84 %
September	29.3 °C	211 mm	86 %
October	28.7 °C	293 mm	90 %
November	28.6 °C	296 mm	90 %
December	28.4 °C	320 mm	91 %

Temperature month by month

Month	Avg high	Avg low	Mean	Record high	Record low	Days above 25 °C	Days above 30 °C
January	28.3 °C	24.1 °C	25.9 °C	33.1 °C	21.7 °C	31	1
February	28.4 °C	24.2 °C	26.0 °C	31.3 °C	20.2 °C	28	1
March	28.9 °C	24.5 °C	26.4 °C	32.0 °C	21.8 °C	31	3
April	29.5 °C	24.8 °C	26.8 °C	34.1 °C	22.8 °C	30	7
May	29.7 °C	25.2 °C	27.2 °C	34.2 °C	22.9 °C	31	12
June	29.5 °C	24.9 °C	27.0 °C	32.1 °C	22.6 °C	30	10
July	29.4 °C	24.8 °C	26.9 °C	35.6 °C	22.5 °C	31	8
August	29.4 °C	24.8 °C	26.9 °C	33.5 °C	22.7 °C	31	10
September	29.3 °C	24.6 °C	26.7 °C	33.3 °C	22.2 °C	30	5
October	28.7 °C	24.2 °C	26.3 °C	33.8 °C	22.5 °C	31	2
November	28.6 °C	24.2 °C	26.1 °C	31.7 °C	22.2 °C	30	1
December	28.4 °C	24.1 °C	26.0 °C	32.7 °C	22.4 °C	31	1

Rain, sun and wind month by month

Month	Rainfall	Wet days	Daylight	Cloud cover	Humidity	Wind	Sea temp
January	236 mm	25	12 h/day	86 %	87 %	14 km/h	27.9 °C
February	154 mm	21	12 h/day	84 %	87 %	15 km/h	27.3 °C
March	140 mm	23	12 h/day	81 %	86 %	13 km/h	28.0 °C
April	181 mm	26	12 h/day	81 %	86 %	12 km/h	29.3 °C
May	205 mm	24	12 h/day	84 %	86 %	12 km/h	30.0 °C
June	202 mm	21	12 h/day	83 %	85 %	12 km/h	30.1 °C
July	195 mm	21	12 h/day	83 %	85 %	12 km/h	30.0 °C
August	198 mm	23	12 h/day	84 %	85 %	13 km/h	29.9 °C
September	211 mm	25	12 h/day	86 %	85 %	13 km/h	29.7 °C
October	293 mm	28	12 h/day	90 %	87 %	13 km/h	29.4 °C
November	296 mm	29	12 h/day	90 %	88 %	13 km/h	29.4 °C
December	320 mm	28	12 h/day	91 %	88 %	13 km/h	28.9 °C

How Miri 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
Miri	30 °C	24 °C	2,631 mm	365
Bandar Seri Begawan · Brunei	30 °C	24 °C	2,363 mm	365
Bintulu · Malaysia	31 °C	23 °C	3,355 mm	364
Kota Kinabalu · Malaysia	29 °C	23 °C	2,615 mm	364
Sibu · Malaysia	30 °C	23 °C	2,994 mm	364
Tarakan · Indonesia	29 °C	25 °C	3,063 mm	365
Tawau · Malaysia	30 °C	24 °C	2,271 mm	365

Where Miri ranks

Ranking	Position	Value
Warmest sea temperatures in Asia in September	31st of 50	30 °C
Warmest sea temperatures in Asia in July	33rd of 50	30 °C
Warmest sea temperatures in Asia in November	35th of 50	29 °C
Warmest sea temperatures in Asia in August	36th of 50	30 °C
Warmest sea temperatures in the world in July	36th of 50	30 °C
Warmest sea temperatures in Asia in June	42nd of 50	30 °C

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

QuestionsCommon questions about Miri’s climate

When is the best time to visit Miri?

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, May is the warmest month and March the driest. The month-by-month table above has the full picture.

How hot does Miri get?

In May, the warmest month, daily highs average 30 °C. About 62 days a year pass 30 °C. The highest value in the 1991–2020 record is 36 °C.

How cold does it get in winter?

Nights average 24 °C in January, the coldest month. Freezing nights are not part of a normal year here.

Which month is wettest in Miri?

December, averaging 320 mm over 28 days with rain. The driest month is March with 140 mm. The year as a whole averages 2,631 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 Miri 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: 4.399°, 113.992° (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.