Haiphong climate

Name: Haiphong
Address: VN

Haiphong is warmest in June, with average highs of 32 °C, and coldest in January, when nights average 14 °C. August is the wettest month (370 mm) and February the driest (22 mm). Figures are 1991–2020 climate normals.

Across a full year Haiphong averages 1,773 mm of rain and 245 days above 25 °C.

Vietnam · population 2,625,200 · 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 June 32 °C
Coldest month January 14 °C
Driest month February 22 mm
Wettest month August 370 mm
Least cloud October 54 % cloud
Hottest on record July 39 °C
Coldest on record January 4.0 °C
Warmest sea August 30 °C

What to expectHaiphong through the year

Haiphong has a clear annual cycle: average daily highs run from 20 °C in January to 32 °C in June, a swing of 12 °C in mean temperature across the year.

Counted across a normal year, 245 days a year reach 25 °C, 113 of them reach 30 °C. The warmest reading in the 1991–2020 record is 39 °C, in July.

Rain is strongly seasonal. August averages 370 mm against 22 mm in February — 17 times as much. Planning around the dry months matters more here than planning around temperature.

The sea off Haiphong is warmest in August at 30 °C and coldest in February at 20 °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	19.6 °C	33 mm	75 %
February	21.2 °C	22 mm	78 %
March	24.1 °C	43 mm	79 %
April	27.7 °C	76 mm	72 %
May	30.2 °C	246 mm	76 %
June	31.8 °C	261 mm	88 %
July	31.6 °C	294 mm	84 %
August	30.9 °C	370 mm	83 %
September	30.0 °C	243 mm	71 %
October	28.1 °C	103 mm	54 %
November	25.1 °C	53 mm	54 %
December	21.1 °C	30 mm	63 %

Temperature month by month

Month	Avg high	Avg low	Mean	Record high	Record low	Days above 25 °C	Days above 30 °C
January	19.6 °C	13.7 °C	16.6 °C	28.1 °C	4.0 °C	1	0
February	21.2 °C	15.3 °C	18.0 °C	32.2 °C	5.0 °C	5	0
March	24.1 °C	18.3 °C	20.9 °C	33.1 °C	8.7 °C	13	1
April	27.7 °C	21.9 °C	24.4 °C	35.5 °C	12.6 °C	25	6
May	30.2 °C	24.8 °C	27.1 °C	38.4 °C	17.4 °C	30	16
June	31.8 °C	26.6 °C	28.8 °C	38.1 °C	20.8 °C	30	24
July	31.6 °C	26.6 °C	28.7 °C	38.7 °C	22.7 °C	31	24
August	30.9 °C	25.8 °C	28.0 °C	36.0 °C	21.7 °C	31	21
September	30.0 °C	24.4 °C	26.9 °C	34.9 °C	16.8 °C	30	16
October	28.1 °C	21.8 °C	24.7 °C	32.9 °C	13.0 °C	28	4
November	25.1 °C	18.4 °C	21.5 °C	31.5 °C	9.0 °C	18	0
December	21.1 °C	14.4 °C	17.7 °C	28.0 °C	4.7 °C	4	0

Rain, sun and wind month by month

Month	Rainfall	Wet days	Daylight	Cloud cover	Humidity	Wind	Sea temp
January	33 mm	6	11 h/day	75 %	77 %	13 km/h	20.3 °C
February	22 mm	6	11 h/day	78 %	80 %	13 km/h	19.8 °C
March	43 mm	9	12 h/day	79 %	82 %	14 km/h	20.5 °C
April	76 mm	12	13 h/day	72 %	83 %	15 km/h	23.2 °C
May	246 mm	20	13 h/day	76 %	83 %	15 km/h	27.3 °C
June	261 mm	22	13 h/day	88 %	83 %	14 km/h	29.4 °C
July	294 mm	24	13 h/day	84 %	83 %	14 km/h	29.6 °C
August	370 mm	26	13 h/day	83 %	86 %	12 km/h	29.8 °C
September	243 mm	20	12 h/day	71 %	84 %	12 km/h	29.5 °C
October	103 mm	12	12 h/day	54 %	79 %	13 km/h	28.0 °C
November	53 mm	8	11 h/day	54 %	76 %	13 km/h	25.5 °C
December	30 mm	6	11 h/day	63 %	73 %	13 km/h	22.6 °C

How Haiphong 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
Haiphong	32 °C	14 °C	1,773 mm	245
Thị Trấn Đông Triều · Vietnam	32 °C	13 °C	1,737 mm	251
Hải Dương · Vietnam	33 °C	13 °C	1,784 mm	252
Hạ Long · Vietnam	31 °C	14 °C	1,749 mm	230
Cẩm Phả · Vietnam	30 °C	14 °C	1,836 mm	220
Bắc Giang · Vietnam	32 °C	13 °C	1,873 mm	248
Nam Định · Vietnam	33 °C	14 °C	1,650 mm	252

Where Haiphong ranks

Ranking	Position	Value
Warmest sea temperatures in Asia in August	47th of 50	30 °C

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

QuestionsCommon questions about Haiphong’s climate

When is the best time to visit Haiphong?

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

How hot does Haiphong get?

In June, the warmest month, daily highs average 32 °C. About 113 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 14 °C in January, the coldest month. Freezing nights are not part of a normal year here.

Which month is wettest in Haiphong?

August, averaging 370 mm over 26 days with rain. The driest month is February with 22 mm. The year as a whole averages 1,773 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 Haiphong 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: 20.865°, 106.683° (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.