Shiyan climate

Name: Shiyan
Address: CN

Shiyan is warmest in July, with average highs of 31 °C, and coldest in January, when nights average -1.5 °C. July is the wettest month (129 mm) and December the driest (21 mm). Figures are 1991–2020 climate normals.

Across a full year Shiyan averages 833 mm of rain, 136 days above 25 °C and 53 days below freezing.

China · population 3,460,000 · 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 -1.5 °C
Driest month December 21 mm
Wettest month July 129 mm
Least cloud December 52 % cloud
Hottest on record August 41 °C
Coldest on record December -21 °C

What to expectShiyan through the year

Shiyan has a clear annual cycle: average daily highs run from 7.7 °C in January to 31 °C in July, a swing of 24 °C in mean temperature across the year.

Counted across a normal year, 136 days a year reach 25 °C, 66 of them reach 30 °C, 53 nights drop below freezing. The warmest reading in the 1991–2020 record is 41 °C, in August.

Rain is strongly seasonal. July averages 129 mm against 21 mm in December — 6.2 times as much. Planning around the dry months matters more here than planning around temperature.

Month by month

Month	Avg high	Rainfall	Cloud
January	7.7 °C	23 mm	55 %
February	10.6 °C	27 mm	63 %
March	15.7 °C	48 mm	66 %
April	21.8 °C	54 mm	66 %
May	26.3 °C	79 mm	69 %
June	29.9 °C	107 mm	68 %
July	31.2 °C	129 mm	70 %
August	30.2 °C	126 mm	64 %
September	25.6 °C	99 mm	66 %
October	20.8 °C	76 mm	63 %
November	14.8 °C	45 mm	58 %
December	9.5 °C	21 mm	52 %

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	7.7 °C	-1.5 °C	3.0 °C	20.0 °C	-17.4 °C	0	0	23
February	10.6 °C	0.8 °C	5.8 °C	23.8 °C	-7.6 °C	0	0	12
March	15.7 °C	5.3 °C	10.6 °C	29.5 °C	-4.4 °C	1	0	2
April	21.8 °C	11.3 °C	16.5 °C	36.8 °C	1.7 °C	9	1	0
May	26.3 °C	16.4 °C	21.2 °C	38.0 °C	7.0 °C	19	7	0
June	29.9 °C	20.9 °C	25.2 °C	39.7 °C	13.5 °C	26	16	0
July	31.2 °C	23.7 °C	27.2 °C	40.5 °C	17.2 °C	29	21	0
August	30.2 °C	22.8 °C	26.2 °C	40.8 °C	14.7 °C	28	17	0
September	25.6 °C	18.3 °C	21.8 °C	38.1 °C	7.8 °C	18	4	0
October	20.8 °C	12.4 °C	16.5 °C	32.7 °C	2.3 °C	5	0	0
November	14.8 °C	5.9 °C	10.3 °C	26.6 °C	-8.9 °C	0	0	1
December	9.5 °C	0.1 °C	4.7 °C	18.8 °C	-21.3 °C	0	0	15

Rain, sun and wind month by month

Month	Rainfall	Wet days	Daylight	Cloud cover	Humidity	Wind
January	23 mm	5	10 h/day	55 %	70 %	10 km/h
February	27 mm	5	11 h/day	63 %	69 %	12 km/h
March	48 mm	8	12 h/day	66 %	68 %	13 km/h
April	54 mm	8	13 h/day	66 %	68 %	13 km/h
May	79 mm	9	14 h/day	69 %	69 %	13 km/h
June	107 mm	8	14 h/day	68 %	72 %	12 km/h
July	129 mm	13	14 h/day	70 %	79 %	11 km/h
August	126 mm	12	13 h/day	64 %	78 %	11 km/h
September	99 mm	10	12 h/day	66 %	76 %	11 km/h
October	76 mm	9	11 h/day	63 %	74 %	10 km/h
November	45 mm	7	10 h/day	58 %	74 %	11 km/h
December	21 mm	5	10 h/day	52 %	71 %	11 km/h

How Shiyan 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
Shiyan	31 °C	-1.5 °C	833 mm	136
Laohekou · China	32 °C	-1.6 °C	829 mm	147
Dengzhou · China	32 °C	-2.4 °C	846 mm	150
Xiangyang · China	31 °C	-1.5 °C	952 mm	148
Shangluo · China	29 °C	-4.7 °C	782 mm	105
Ankang · China	32 °C	-0.09 °C	816 mm	132
Nanyang · China	31 °C	-2.7 °C	896 mm	147

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

QuestionsCommon questions about Shiyan’s climate

When is the best time to visit Shiyan?

That depends on what you want, so the honest answer is a comparison rather than a single month. May, September, October 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 Shiyan get?

In July, the warmest month, daily highs average 31 °C. About 66 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 -1.5 °C in January, the coldest month. A normal year has 53 nights below freezing.

Which month is wettest in Shiyan?

July, averaging 129 mm over 13 days with rain. The driest month is December with 21 mm. The year as a whole averages 833 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 Shiyan 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
Data point: 32.648°, 110.778° (the coordinates the reanalysis values are taken for)
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.