China · 1991–2020

Best time to visit
Nanjing.

October leads for comfortable weather in Nanjing: typically 22.9°C by day, 14°C at night, with 70 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortOctober

Typical high22.9°C

Typical low14°C

Rain in October70 mm

Comfort

October

October · April · May

87climate match

Beach

September

September · May · June

82climate match

Outdoors

April

April · October · November

78climate match

The weakest month is January, scoring 8 against October’s 87 — days reach only 7.2°C, 17° 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

87.2° / -0.4°

Feb

2210° / 1.9°

Mar

3914.8° / 5.7°

Apr

7221.3° / 11.4°

May

7126.7° / 17°

Jun

3829.4° / 21.2°

Jul

1932.4° / 24.9°

Aug

2731.6° / 24.6°

Sep

6728° / 20.2°

Oct

8722.9° / 14°

Nov

5416.5° / 7.2°

Dec

2510° / 1.7°

Monthly climate evidence for Nanjing — daylight is calculated from latitude, everything else is measured
Month	Day	Night	Rain	Wet days	Daylight	Comfort	Coverage
January	7.2°C	-0.4°C	62 mm	8.3	10 h 16	8	Good coverage
February	10°C	1.9°C	62 mm	7.9	11 h	22	Good coverage
March	14.8°C	5.7°C	92 mm	9.7	11 h 53	39	Good coverage
April	21.3°C	11.4°C	93 mm	7.7	12 h 55	72	Strong coverage
May	26.7°C	17°C	110 mm	9.6	13 h 47	71	Good coverage
June	29.4°C	21.2°C	227 mm	10.2	14 h 14	38	Good coverage
July	32.4°C	24.9°C	246 mm	10.2	14 h 03	19	Good coverage
August	31.6°C	24.6°C	200 mm	11.1	13 h 19	27	Good coverage
September	28°C	20.2°C	84 mm	6.9	12 h 19	67	Good coverage
October	22.9°C	14°C	70 mm	6	11 h 20	87	Good coverage
November	16.5°C	7.2°C	61 mm	7.1	10 h 28	54	Good coverage
December	10°C	1.7°C	47 mm	6.2	10 h 04	25	Good coverage

Records at NANJING, 1951–2025
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	21.0°C22 Jan 1972	-14.0°C6 Jan 1955	37 mm31 Jan 2024	124 mm2018 · driest 0 mm in 1963	73
February	27.7°C12 Feb 2009	-13.0°C6 Feb 1969	38 mm20 Feb 2024	134 mm2014 · driest 4 mm in 1986	72
March	30.3°C9 Mar 2013	-7.1°C3 Mar 1958	70 mm17 Mar 2015	189 mm1992 · driest 11 mm in 2001	73
April	34.2°C29 Apr 2011	-0.2°C1 Apr 1960	76 mm25 Apr 2022	214 mm1958 · driest 6 mm in 2025	73
May	37.5°C20 May 2011	5.0°C3 May 1965	141 mm19 May 1995	260 mm1977 · driest 10 mm in 2022	75
June	38.1°C20 Jun 1951	11.8°C6 Jun 1969	173 mm21 Jun 1972	778 mm2015 · driest 18 mm in 2012	74
July	39.7°C7 Jul 1978	16.8°C5 Jul 1976	207 mm5 Jul 2003	608 mm1969 · driest 31 mm in 1976	72
August	40.7°C22 Aug 1959	16.9°C30 Aug 2009	144 mm10 Aug 2015	413 mm2018 · driest 12 mm in 2022	73
September	39.0°C11 Sep 1955	7.7°C29 Sep 1972	131 mm16 Sep 2024	260 mm1962 · driest 0 mm in 2001	71
October	34.4°C5 Oct 2021	0.2°C29 Oct 1966	87 mm26 Oct 2016	353 mm2016 · driest 0 mm in 1979	69
November	29.2°C19 Nov 2020	-6.3°C30 Nov 1971	55 mm28 Nov 1982	177 mm1967 · driest 0 mm in 1995	70
December	23.1°C2 Dec 1968	-13.1°C29 Dec 1991	37 mm15 Dec 2009	142 mm2018 · driest 0 mm in 1980	71

Typical days per month at NANJING, 1991–2020
Month	Days 25°C+	Days 30°C+	Frost nights	Heavy rain (10 mm+)
January	0	0	17	2
February	<1	0	9	2
March	1	0	2	3
April	6	1	0	3
May	20	7	0	3
June	26	14	0	4
July	30	24	0	5
August	29	22	0	4
September	25	8	0	2
October	8	<1	0	2
November	1	0	1	2
December	0	0	11	1

How often, not how much — every day in NANJING’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	<1%	21%	4%	20%	5.3–9.1°C
February	3%	26%	6%	30%	6.3–12.2°C
March	13%	28%	9%	29%	11.5–16.7°C
April	45%	27%	10%	28%	19.0–23.2°C
May	72%	27%	10%	25%	23.6–28.2°C
June	71%	30%	15%	36%	27.8–31.0°C
July	69%	33%	17%	38%	30.2–34.4°C
August	73%	29%	13%	34%	30.4–34.1°C
September	78%	23%	9%	23%	26.1–29.1°C
October	67%	19%	6%	17%	21.0–24.1°C
November	19%	21%	6%	22%	14.4–18.5°C
December	<1%	15%	4%	15%	7.5–11.9°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: 1980.2012

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 1799962
NOAA station: CHM00058238 · NANJING
Station distance: 18.4 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 22 usable years
Daylight: Calculated from latitude 32.06°, mid-month, sunrise to sunset including refraction. Not a station measurement.
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 NANJING is what differs

Ma’anshan→Zhenzhou→Xiaolingwei→Jiujianqiao→Jingqiao→Qianxiangkou→

Or put two places side by side: Nanjing vs Ma’anshan

Best time to visitNanjing.