Rạch Giá climate

Name: Rạch Giá
Address: VN

Rạch Giá is warmest in April, with average highs of 33 °C, and coldest in January, when nights average 22 °C. October is the wettest month (316 mm) and February the driest (14 mm). Figures are 1991–2020 climate normals.

Across a full year Rạch Giá averages 1,978 mm of rain and 364 days above 25 °C.

Vietnam · population 459,860 · 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 April 33 °C
Coldest month January 22 °C
Driest month February 14 mm
Wettest month October 316 mm
Least cloud March 53 % cloud
Hottest on record April 38 °C
Coldest on record December 17 °C
Warmest sea May 31 °C

What to expectRạch Giá through the year

Rạch Giá changes little through the year. Average daily highs stay between 30 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, 364 days a year reach 25 °C, 184 of them reach 30 °C. The warmest reading in the 1991–2020 record is 38 °C, in April.

Rain is strongly seasonal. October averages 316 mm against 14 mm in February — 23 times as much. Planning around the dry months matters more here than planning around temperature.

The sea off Rạch Giá is warmest in May at 31 °C and coldest in January 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	29.7 °C	27 mm	62 %
February	31.3 °C	14 mm	54 %
March	32.8 °C	43 mm	53 %
April	33.0 °C	94 mm	59 %
May	31.2 °C	208 mm	80 %
June	29.6 °C	248 mm	86 %
July	29.0 °C	271 mm	87 %
August	29.0 °C	256 mm	87 %
September	29.0 °C	290 mm	89 %
October	29.7 °C	316 mm	84 %
November	30.0 °C	143 mm	72 %
December	29.5 °C	71 mm	70 %

Temperature month by month

Month	Avg high	Avg low	Mean	Record high	Record low	Days above 25 °C	Days above 30 °C
January	29.7 °C	22.3 °C	25.7 °C	33.8 °C	17.1 °C	31	12
February	31.3 °C	22.9 °C	26.8 °C	35.1 °C	19.1 °C	28	23
March	32.8 °C	24.4 °C	28.1 °C	36.4 °C	20.0 °C	31	30
April	33.0 °C	25.5 °C	28.6 °C	37.7 °C	23.1 °C	30	28
May	31.2 °C	25.9 °C	28.0 °C	37.5 °C	23.9 °C	31	22
June	29.6 °C	25.6 °C	27.3 °C	33.7 °C	23.6 °C	30	10
July	29.0 °C	25.2 °C	26.8 °C	31.7 °C	23.3 °C	31	5
August	29.0 °C	25.2 °C	26.8 °C	31.6 °C	23.3 °C	31	5
September	29.0 °C	24.9 °C	26.6 °C	32.1 °C	23.0 °C	30	6
October	29.7 °C	24.3 °C	26.4 °C	32.7 °C	20.9 °C	31	14
November	30.0 °C	23.8 °C	26.4 °C	32.7 °C	19.3 °C	30	17
December	29.5 °C	22.9 °C	25.8 °C	33.0 °C	16.9 °C	30	12

Rain, sun and wind month by month

Month	Rainfall	Wet days	Daylight	Cloud cover	Humidity	Wind	Sea temp
January	27 mm	5	12 h/day	62 %	75 %	13 km/h	27.3 °C
February	14 mm	2	12 h/day	54 %	71 %	14 km/h	27.9 °C
March	43 mm	7	12 h/day	53 %	70 %	15 km/h	29.0 °C
April	94 mm	14	12 h/day	59 %	74 %	13 km/h	30.4 °C
May	208 mm	26	13 h/day	80 %	82 %	15 km/h	30.7 °C
June	248 mm	27	13 h/day	86 %	85 %	18 km/h	29.9 °C
July	271 mm	28	13 h/day	87 %	86 %	19 km/h	29.3 °C
August	256 mm	28	12 h/day	87 %	85 %	20 km/h	28.9 °C
September	290 mm	28	12 h/day	89 %	86 %	18 km/h	28.8 °C
October	316 mm	28	12 h/day	84 %	86 %	13 km/h	29.1 °C
November	143 mm	18	12 h/day	72 %	82 %	13 km/h	28.8 °C
December	71 mm	10	12 h/day	70 %	77 %	14 km/h	27.7 °C

How Rạch Giá 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
Rạch Giá	33 °C	22 °C	1,978 mm	364
Long Xuyên · Vietnam	34 °C	22 °C	1,732 mm	365
Thốt Nốt · Vietnam	34 °C	22 °C	1,820 mm	364
Cần Thơ · Vietnam	33 °C	22 °C	1,858 mm	364
Cao Lãnh · Vietnam	34 °C	22 °C	1,814 mm	365
Sa Dec · Vietnam	34 °C	22 °C	1,845 mm	364
Tân Châu · Vietnam	34 °C	22 °C	1,657 mm	365

Where Rạch Giá ranks

Ranking	Position	Value
Warmest sea temperatures in Asia in April	2ndof 50	30 °C
Warmest sea temperatures in Asia in May	2ndof 50	31 °C
Warmest sea temperatures in the world in April	2ndof 50	30 °C
Warmest sea temperatures in the world in May	3rdof 50	31 °C

Planning a trip? See the best time to visit Rạch Giá.

QuestionsCommon questions about Rạch Giá’s climate

When is the best time to visit Rạch Giá?

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

How hot does Rạch Giá get?

In April, the warmest month, daily highs average 33 °C. About 184 days a year pass 30 °C. The highest value in the 1991–2020 record is 38 °C.

How cold does it get in winter?

Nights average 22 °C in January, the coldest month. Freezing nights are not part of a normal year here.

Which month is wettest in Rạch Giá?

October, averaging 316 mm over 28 days with rain. The driest month is February with 14 mm. The year as a whole averages 1,978 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 Rạch Giá 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.