Tongzhou climate

Name: Tongzhou
Address: CN

Tongzhou is warmest in July, with average highs of 32 °C, and coldest in January, when nights average -8.2 °C. July is the wettest month (179 mm) and January the driest (2.5 mm). Figures are 1991–2020 climate normals.

Across a full year Tongzhou averages 580 mm of rain, 142 days above 25 °C and 127 days below freezing.

China · population 163,326 · 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 July 32 °C
Coldest month January -8.2 °C
Driest month January 2 mm
Wettest month July 179 mm
Least cloud December 25 % cloud
Hottest on record July 41 °C
Coldest on record January -23 °C

What to expectTongzhou through the year

Tongzhou has a clear annual cycle: average daily highs run from 1.9 °C in January to 32 °C in July, a swing of 31 °C in mean temperature across the year.

Counted across a normal year, 142 days a year reach 25 °C, 77 of them reach 30 °C, 127 nights drop below freezing. The warmest reading in the 1991–2020 record is 41 °C, in July.

Rain is strongly seasonal. July averages 179 mm against 2 mm in January — 73 times as much. Planning around the dry months matters more here than planning around temperature.

Month by month

Month	Avg high	Rainfall	Cloud
January	1.9 °C	2 mm	27 %
February	6.0 °C	5 mm	33 %
March	13.4 °C	9 mm	38 %
April	21.5 °C	20 mm	42 %
May	28.1 °C	38 mm	47 %
June	31.7 °C	85 mm	56 %
July	31.8 °C	179 mm	59 %
August	30.2 °C	131 mm	54 %
September	26.3 °C	58 mm	45 %
October	19.3 °C	34 mm	35 %
November	9.9 °C	15 mm	31 %
December	3.0 °C	3 mm	25 %

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	1.9 °C	-8.2 °C	-3.6 °C	12.2 °C	-23.2 °C	0	0	31
February	6.0 °C	-5.3 °C	-0.1 °C	18.3 °C	-18.0 °C	0	0	28
March	13.4 °C	-0.1 °C	6.5 °C	28.8 °C	-11.3 °C	0	0	17
April	21.5 °C	7.8 °C	14.6 °C	34.3 °C	-4.3 °C	8	1	1
May	28.1 °C	14.7 °C	21.4 °C	40.9 °C	2.5 °C	24	10	0
June	31.7 °C	19.9 °C	25.7 °C	40.9 °C	10.4 °C	28	21	0
July	31.8 °C	22.6 °C	27.0 °C	41.4 °C	16.3 °C	30	22	0
August	30.2 °C	21.1 °C	25.5 °C	37.1 °C	12.3 °C	30	18	0
September	26.3 °C	15.6 °C	20.7 °C	35.3 °C	7.7 °C	20	4	0
October	19.3 °C	7.8 °C	13.3 °C	30.9 °C	-3.4 °C	3	0	1
November	9.9 °C	-1.2 °C	4.0 °C	22.6 °C	-15.3 °C	0	0	19
December	3.0 °C	-6.4 °C	-2.3 °C	12.3 °C	-18.0 °C	0	0	31

Rain, sun and wind month by month

Month	Rainfall	Wet days	Daylight	Cloud cover	Humidity	Wind
January	2 mm	1	9.7 h/day	27 %	43 %	14 km/h
February	5 mm	1	11 h/day	33 %	44 %	14 km/h
March	9 mm	2	12 h/day	38 %	42 %	16 km/h
April	20 mm	4	13 h/day	42 %	40 %	18 km/h
May	38 mm	5	14 h/day	47 %	42 %	18 km/h
June	85 mm	9	15 h/day	56 %	54 %	15 km/h
July	179 mm	13	15 h/day	59 %	70 %	12 km/h
August	131 mm	11	14 h/day	54 %	74 %	11 km/h
September	58 mm	7	12 h/day	45 %	64 %	13 km/h
October	34 mm	4	11 h/day	35 %	56 %	14 km/h
November	15 mm	2	10.0 h/day	31 %	55 %	13 km/h
December	3 mm	1	9.4 h/day	25 %	47 %	14 km/h

How Tongzhou 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
Tongzhou	32 °C	-8.2 °C	580 mm	142
Beijing · China	32 °C	-8.3 °C	545 mm	141
Sanhe · China	31 °C	-8.6 °C	596 mm	136
Langfang · China	32 °C	-7.2 °C	618 mm	144
Mentougou · China	31 °C	-8.4 °C	683 mm	134
Tianjin · China	31 °C	-7.6 °C	591 mm	138
Tanggu · China	30 °C	-6.4 °C	566 mm	119

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

QuestionsCommon questions about Tongzhou’s climate

When is the best time to visit Tongzhou?

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

How hot does Tongzhou get?

In July, the warmest month, daily highs average 32 °C. About 77 days a year pass 30 °C. The highest value in the 1991–2020 record is 41 °C.

How cold does it get in winter?

Nights average -8.2 °C in January, the coldest month. A normal year has 127 nights below freezing.

Which month is wettest in Tongzhou?

July, averaging 179 mm over 13 days with rain. The driest month is January with 2 mm. The year as a whole averages 580 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 Tongzhou 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.