Dalian climate

Name: Dalian
Address: CN

Dalian is warmest in August, with average highs of 27 °C, and coldest in January, when nights average -4.8 °C. July is the wettest month (141 mm) and January the driest (6.5 mm). Figures are 1991–2020 climate normals.

Across a full year Dalian averages 621 mm of rain, 54 days above 25 °C and 91 days below freezing.

China · population 4,913,879 · 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 August 27 °C
Coldest month January -4.8 °C
Driest month January 7 mm
Wettest month July 141 mm
Least cloud October 38 % cloud
Hottest on record August 36 °C
Coldest on record January -16 °C
Warmest sea August 24 °C

What to expectDalian through the year

Dalian has a clear annual cycle: average daily highs run from -0.2 °C in January to 27 °C in August, a swing of 27 °C in mean temperature across the year.

Counted across a normal year, 54 days a year reach 25 °C, 1 of them reach 30 °C, 91 nights drop below freezing. The warmest reading in the 1991–2020 record is 36 °C, in August.

Rain is strongly seasonal. July averages 141 mm against 7 mm in January — 22 times as much. Planning around the dry months matters more here than planning around temperature.

The sea off Dalian is warmest in August at 24 °C and coldest in February at 3.3 °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	-0.2 °C	7 mm	43 %
February	1.6 °C	11 mm	40 %
March	6.0 °C	16 mm	40 %
April	11.9 °C	38 mm	43 %
May	17.5 °C	62 mm	48 %
June	22.3 °C	84 mm	55 %
July	25.7 °C	141 mm	58 %
August	26.5 °C	141 mm	52 %
September	23.1 °C	53 mm	44 %
October	16.9 °C	30 mm	38 %
November	9.5 °C	27 mm	42 %
December	2.8 °C	12 mm	46 %

Temperature month by month

Month	Avg high	Avg low	Mean	Record high	Record low	Days above 25 °C	Days above 30 °C	Days below 0 °C
January	-0.2 °C	-4.8 °C	-2.3 °C	7.8 °C	-15.7 °C	0	0	29
February	1.6 °C	-3.1 °C	-0.6 °C	12.0 °C	-13.5 °C	0	0	23
March	6.0 °C	1.1 °C	3.6 °C	17.0 °C	-8.9 °C	0	0	11
April	11.9 °C	7.0 °C	9.3 °C	26.3 °C	-1.4 °C	0	0	0
May	17.5 °C	12.8 °C	15.0 °C	30.4 °C	5.9 °C	0	0	0
June	22.3 °C	18.2 °C	20.1 °C	33.5 °C	10.5 °C	4	0	0
July	25.7 °C	22.3 °C	23.9 °C	34.4 °C	17.8 °C	18	1	0
August	26.5 °C	23.0 °C	24.7 °C	35.8 °C	16.5 °C	26	1	0
September	23.1 °C	19.0 °C	21.1 °C	29.6 °C	9.7 °C	6	0	0
October	16.9 °C	12.4 °C	14.8 °C	25.5 °C	1.3 °C	0	0	0
November	9.5 °C	4.6 °C	7.3 °C	18.4 °C	-6.1 °C	0	0	5
December	2.8 °C	-2.0 °C	0.7 °C	12.2 °C	-11.1 °C	0	0	22

Rain, sun and wind month by month

Month	Rainfall	Wet days	Daylight	Cloud cover	Humidity	Wind	Sea temp
January	7 mm	2	9.7 h/day	43 %	62 %	27 km/h	5.1 °C
February	11 mm	2	11 h/day	40 %	63 %	27 km/h	3.3 °C
March	16 mm	3	12 h/day	40 %	65 %	27 km/h	3.9 °C
April	38 mm	5	13 h/day	43 %	67 %	27 km/h	7.1 °C
May	62 mm	7	14 h/day	48 %	72 %	25 km/h	12.1 °C
June	84 mm	7	15 h/day	55 %	81 %	22 km/h	17.4 °C
July	141 mm	10	15 h/day	58 %	86 %	21 km/h	21.7 °C
August	141 mm	9	14 h/day	52 %	83 %	20 km/h	24.3 °C
September	53 mm	5	12 h/day	44 %	73 %	22 km/h	22.5 °C
October	30 mm	5	11 h/day	38 %	65 %	26 km/h	18.5 °C
November	27 mm	4	10 h/day	42 %	64 %	29 km/h	13.6 °C
December	12 mm	3	9.5 h/day	46 %	63 %	29 km/h	9.3 °C

How Dalian 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
Dalian	27 °C	-4.8 °C	621 mm	54
Wafangdian · China	28 °C	-10 °C	668 mm	93
Yantai · China	29 °C	-3.6 °C	656 mm	101
Weihai · China	27 °C	-1.8 °C	700 mm	67
Yingkou · China	28 °C	-11 °C	662 mm	82
Qinhuangdao · China	28 °C	-9.0 °C	648 mm	97
Huludao · China	28 °C	-10 °C	555 mm	92

Where Dalian ranks

Ranking	Position	Value
The coolest places in Asia in May	18thof 50	17 °C
The coolest places in Asia in April	27thof 50	12 °C
The coolest places in Asia in June	31stof 50	22 °C
Best beach destinations in Asia in August	41stof 50	86/100

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

QuestionsCommon questions about Dalian’s climate

When is the best time to visit Dalian?

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

How hot does Dalian get?

In August, the warmest month, daily highs average 27 °C. About 1 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 -4.8 °C in January, the coldest month. A normal year has 91 nights below freezing.

Which month is wettest in Dalian?

July, averaging 141 mm over 10 days with rain. The driest month is January with 7 mm. The year as a whole averages 621 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 Dalian 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.