Tongchuan climate

Name: Tongchuan
Address: CN

Tongchuan is warmest in July, with average highs of 31 °C, and coldest in January, when nights average -5.0 °C. August is the wettest month (106 mm) and December the driest (7.1 mm). Figures are 1991–2020 climate normals.

Across a full year Tongchuan averages 608 mm of rain, 118 days above 25 °C and 105 days below freezing.

China · population 417,740 · 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 31 °C
Coldest month January -5.0 °C
Driest month December 7 mm
Wettest month August 106 mm
Least cloud December 39 % cloud
Hottest on record June 40 °C
Coldest on record December -18 °C

What to expectTongchuan through the year

Tongchuan has a clear annual cycle: average daily highs run from 4.7 °C in January to 31 °C in July, a swing of 27 °C in mean temperature across the year.

Counted across a normal year, 118 days a year reach 25 °C, 56 of them reach 30 °C, 105 nights drop below freezing. The warmest reading in the 1991–2020 record is 40 °C, in June.

Rain is strongly seasonal. August averages 106 mm against 7 mm in December — 15 times as much. Planning around the dry months matters more here than planning around temperature.

Month by month

Month	Avg high	Rainfall	Cloud
January	4.7 °C	8 mm	46 %
February	8.3 °C	12 mm	53 %
March	14.3 °C	23 mm	58 %
April	21.0 °C	36 mm	58 %
May	25.8 °C	51 mm	64 %
June	29.9 °C	67 mm	61 %
July	30.7 °C	105 mm	57 %
August	28.8 °C	106 mm	55 %
September	23.5 °C	105 mm	60 %
October	18.0 °C	61 mm	57 %
November	11.8 °C	28 mm	46 %
December	6.1 °C	7 mm	39 %

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	4.7 °C	-5.0 °C	-0.7 °C	17.0 °C	-17.1 °C	0	0	31
February	8.3 °C	-2.7 °C	2.7 °C	19.7 °C	-15.8 °C	0	0	24
March	14.3 °C	2.4 °C	8.4 °C	28.1 °C	-6.7 °C	1	0	8
April	21.0 °C	8.9 °C	14.9 °C	35.8 °C	-3.3 °C	7	1	0
May	25.8 °C	14.2 °C	20.0 °C	36.3 °C	3.5 °C	19	6	0
June	29.9 °C	19.0 °C	24.5 °C	40.4 °C	8.5 °C	26	16	0
July	30.7 °C	21.4 °C	25.9 °C	38.7 °C	13.2 °C	28	19	0
August	28.8 °C	20.1 °C	24.3 °C	37.7 °C	12.2 °C	26	11	0
September	23.5 °C	15.2 °C	19.2 °C	36.8 °C	5.9 °C	10	2	0
October	18.0 °C	8.8 °C	13.2 °C	29.8 °C	-2.8 °C	1	0	0
November	11.8 °C	1.3 °C	6.3 °C	22.9 °C	-10.1 °C	0	0	11
December	6.1 °C	-3.9 °C	0.5 °C	16.3 °C	-18.0 °C	0	0	30

Rain, sun and wind month by month

Month	Rainfall	Wet days	Daylight	Cloud cover	Humidity	Wind
January	8 mm	2	10 h/day	46 %	52 %	12 km/h
February	12 mm	3	11 h/day	53 %	55 %	13 km/h
March	23 mm	5	12 h/day	58 %	52 %	16 km/h
April	36 mm	6	13 h/day	58 %	50 %	16 km/h
May	51 mm	8	14 h/day	64 %	50 %	16 km/h
June	67 mm	8	14 h/day	61 %	53 %	15 km/h
July	105 mm	10	14 h/day	57 %	65 %	13 km/h
August	106 mm	10	13 h/day	55 %	69 %	13 km/h
September	105 mm	11	12 h/day	60 %	70 %	13 km/h
October	61 mm	9	11 h/day	57 %	67 %	13 km/h
November	28 mm	5	10 h/day	46 %	64 %	12 km/h
December	7 mm	2	9.8 h/day	39 %	56 %	12 km/h

How Tongchuan 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
Tongchuan	31 °C	-5.0 °C	608 mm	118
Tongchuanshi · China	30 °C	-4.7 °C	613 mm	113
Xianyang · China	31 °C	-4.0 °C	845 mm	125
Weinan · China	33 °C	-3.5 °C	614 mm	144
Xi’an · China	32 °C	-4.1 °C	797 mm	128
Huayin · China	32 °C	-3.0 °C	994 mm	145
Yongji · China	33 °C	-3.8 °C	680 mm	144

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

QuestionsCommon questions about Tongchuan’s climate

When is the best time to visit Tongchuan?

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

How hot does Tongchuan get?

In July, the warmest month, daily highs average 31 °C. About 56 days a year pass 30 °C. The highest value in the 1991–2020 record is 40 °C.

How cold does it get in winter?

Nights average -5.0 °C in January, the coldest month. A normal year has 105 nights below freezing.

Which month is wettest in Tongchuan?

August, averaging 106 mm over 10 days with rain. The driest month is December with 7 mm. The year as a whole averages 608 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 Tongchuan 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.