China · 1991–2020

Best time to visit
Dalian.

September leads for comfortable weather in Dalian: typically 24.4°C by day, 18.1°C at night, with 62 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortSeptember

Typical high24.4°C

Typical low18.1°C

Rain in September62 mm

Comfort

September

September · June · May

88climate match

Beach

September

September · July · June

72climate match

Outdoors

October

October · May · April

88climate match

The weakest month is January, scoring 5 against September’s 88 — days reach only -0.1°C, 24° below the 24°C the score treats as ideal.

Month by month

The whole year,
without the guesswork.

The bars show the comfort score. Day and night temperatures come from daily observed highs and lows; rain is the historical monthly estimate.

Jan

5-0.1° / -6.3°

Feb

52.6° / -3.7°

Mar

217.7° / 0.9°

Apr

5515° / 7.1°

May

8121.1° / 13°

Jun

8424.6° / 17.7°

Jul

5827° / 21.6°

Aug

5027.6° / 22.1°

Sep

8824.4° / 18.1°

Oct

7017.9° / 11.2°

Nov

319.8° / 3°

Dec

52.8° / -3.6°

Monthly climate evidence for Dalian — daylight is calculated from latitude, everything else is measured, sea temperature from the nearest open water 5 km away
Month	Day	Night	Rain	Wet days	Sea	Daylight	Comfort	Coverage
January	-0.1°C	-6.3°C	6 mm	1.5	5.1°C	9 h 43	5	Good coverage
February	2.6°C	-3.7°C	7 mm	1.3	3.3°C	10 h 40	5	Good coverage
March	7.7°C	0.9°C	13 mm	2.2	3.9°C	11 h 50	21	Good coverage
April	15°C	7.1°C	36 mm	3.6	7.1°C	13 h 10	55	Good coverage
May	21.1°C	13°C	60 mm	5.1	12.1°C	14 h 16	81	Good coverage
June	24.6°C	17.7°C	83 mm	5.8	17.4°C	14 h 53	84	Good coverage
July	27°C	21.6°C	141 mm	9.1	21.7°C	14 h 38	58	Good coverage
August	27.6°C	22.1°C	180 mm	8.2	24.3°C	13 h 41	50	Good coverage
September	24.4°C	18.1°C	62 mm	4.5	22.5°C	12 h 24	88	Good coverage
October	17.9°C	11.2°C	41 mm	5	18.5°C	11 h 07	70	Good coverage
November	9.8°C	3°C	28 mm	3.5	13.6°C	10 h	31	Good coverage
December	2.8°C	-3.6°C	12 mm	2.7	9.3°C	9 h 27	5	Good coverage

Records at DALIAN, 1951–2025
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	10.2°C11 Jan 2002	-21.1°C4 Jan 1970	30 mm28 Jan 2025	39 mm1964 · driest 0 mm in 1993	69
February	14.2°C26 Feb 1992	-17.3°C24 Feb 1969	27 mm18 Feb 1990	31 mm2021 · driest 0 mm in 1989	68
March	25.7°C22 Mar 2025	-15.3°C6 Mar 1971	56 mm4 Mar 2007	94 mm2007 · driest 0 mm in 2011	69
April	28.5°C21 Apr 2004	-4.2°C6 Apr 1964	79 mm20 Apr 2009	126 mm2009 · driest 1 mm in 1953	70
May	33.8°C29 May 1979	3.7°C3 May 1961	92 mm17 May 2005	198 mm2020 · driest 0 mm in 1957	74
June	35.6°C11 Jun 2004	10.5°C5 Jun 1992	157 mm26 Jun 2011	244 mm1984 · driest 5 mm in 1955	74
July	36.6°C14 Jul 2015	14.2°C3 Jul 1976	171 mm17 Jul 1955	580 mm2013 · driest 8 mm in 2018	74
August	34.4°C1 Aug 1968	14.5°C31 Aug 1966	183 mm15 Aug 1987	376 mm1998 · driest 2 mm in 1955	71
September	33.4°C1 Sep 2002	6.4°C28 Sep 1968	232 mm1 Sep 1992	286 mm2022 · driest 2 mm in 2023	67
October	28.2°C2 Oct 1953	-1.9°C26 Oct 1958	65 mm9 Oct 2001	128 mm2007 · driest 2 mm in 1982	68
November	24.7°C3 Nov 2023	-12.8°C28 Nov 1987	42 mm5 Nov 2023	113 mm1993 · driest 0 mm in 2007	69
December	15.8°C9 Dec 2023	-19.0°C28 Dec 1967	40 mm19 Dec 1979	60 mm1979 · driest 0 mm in 2024	69

Typical days per month at DALIAN, 1991–2020
Month	Days 25°C+	Days 30°C+	Frost nights	Heavy rain (10 mm+)
January	0	0	28	0
February	0	0	23	<1
March	0	0	12	<1
April	<1	0	<1	1
May	5	<1	0	2
June	13	2	0	3
July	24	5	0	4
August	28	4	0	4
September	13	<1	0	2
October	<1	0	<1	1
November	0	0	8	<1
December	0	0	24	<1

How often, not how much — every day in DALIAN’s record sorted by what it was actually like, rather than averaged
Month	Warm & dry days	Wet days	Washouts	Week with 3+ wet days	Daytime mean has ranged
January	0%	6%	<1%	2%	-2.9–1.7°C
February	0%	6%	<1%	2%	-1.3–4.1°C
March	<1%	9%	<1%	3%	4.8–9.8°C
April	8%	14%	4%	7%	12.1–16.8°C
May	52%	16%	6%	8%	18.5–22.7°C
June	74%	21%	8%	19%	22.0–26.1°C
July	71%	29%	14%	37%	25.0–28.1°C
August	75%	27%	13%	27%	26.0–28.5°C
September	79%	17%	7%	10%	22.8–25.4°C
October	28%	14%	4%	6%	16.3–19.4°C
November	<1%	12%	3%	4%	7.6–11.7°C
December	0%	8%	<1%	2%	-0.7–5.2°C

A warm and dry day reaches 20°C with under 1 mm of rain; a wet day gets 1 mm or more; a washout gets 10 mm or more. The week column is the share of seven-day stretches in that month, across the station’s whole daily record, that contained three or more wet days — the odds a week-long trip is rained on repeatedly, counted rather than modelled. The last column is the 10th to 90th percentile of that month’s daytime average across individual years: a narrow band means the average is what you will get, a wide one means the average is a midpoint between years that felt quite different.

1951Each stripe is one year’s mean temperature against the 62-year average. Warmest: 2007. Coolest: 1969.2012

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 1814087
NOAA station: CHM00054662 · DALIAN
Station distance: 3 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 22 usable years
Daylight: Calculated from latitude 38.91°, mid-month, sunrise to sunset including refraction. Not a station measurement.
Sea temperature: NOAA OISST v2.1 1991–2020 monthly climatology, nearest open water 5 km from the place centre. A sheltered bay can run warmer than the open sea it is measured from.
Important limit: Historical climate is not a forecast. Nearby stations can miss mountains, coasts, and local microclimates.

These places read the same station, so their numbers are identical — distance from DALIAN is what differs

Jinzhou→Lüshun→Dalianwan→Zhoushuizi→Zhoujiatun→Yingchengzi→

Or put two places side by side: Dalian vs Jinzhou

Best time to visitDalian.

September

September

October

The whole year,without the guesswork.

Nearby, measured,and named.

Best time to visit
Dalian.

The whole year,
without the guesswork.

Nearby, measured,
and named.