Ji’an climate

Name: Ji’an
Address: CN

Ji’an is warmest in July, with average highs of 34 °C, and coldest in January, when nights average 3.7 °C. June is the wettest month (268 mm) and December the driest (53 mm). Figures are 1991–2020 climate normals.

Across a full year Ji’an averages 1,523 mm of rain, 178 days above 25 °C and 8 days below freezing.

China · population 538,699 · 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 34 °C
Coldest month January 3.7 °C
Driest month December 53 mm
Wettest month June 268 mm
Least cloud October 49 % cloud
Hottest on record August 41 °C
Coldest on record December -6.4 °C

What to expectJi’an through the year

Ji’an has a clear annual cycle: average daily highs run from 11 °C in January to 34 °C in July, a swing of 22 °C in mean temperature across the year.

Counted across a normal year, 178 days a year reach 25 °C, 100 of them reach 30 °C, 8 nights drop below freezing. The warmest reading in the 1991–2020 record is 41 °C, in August.

Rain is strongly seasonal. June averages 268 mm against 53 mm in December — 5.1 times as much. Planning around the dry months matters more here than planning around temperature.

Month by month

Month	Avg high	Rainfall	Cloud
January	11.3 °C	63 mm	63 %
February	14.0 °C	74 mm	68 %
March	17.5 °C	158 mm	74 %
April	23.6 °C	174 mm	73 %
May	27.6 °C	234 mm	73 %
June	30.0 °C	268 mm	81 %
July	33.6 °C	140 mm	71 %
August	33.2 °C	146 mm	64 %
September	29.7 °C	84 mm	55 %
October	25.1 °C	57 mm	49 %
November	19.2 °C	72 mm	53 %
December	13.4 °C	53 mm	51 %

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	11.3 °C	3.7 °C	7.5 °C	26.5 °C	-5.5 °C	0	0	4
February	14.0 °C	6.0 °C	10.1 °C	29.5 °C	-3.8 °C	1	0	1
March	17.5 °C	10.0 °C	13.8 °C	30.9 °C	-1.8 °C	4	0	0
April	23.6 °C	15.8 °C	19.5 °C	32.9 °C	2.8 °C	13	2	0
May	27.6 °C	20.4 °C	23.7 °C	35.9 °C	11.3 °C	24	8	0
June	30.0 °C	23.9 °C	26.6 °C	35.2 °C	16.8 °C	28	17	0
July	33.6 °C	26.4 °C	29.6 °C	40.4 °C	18.4 °C	31	28	0
August	33.2 °C	25.9 °C	29.2 °C	40.9 °C	18.4 °C	31	27	0
September	29.7 °C	22.3 °C	25.7 °C	39.2 °C	13.6 °C	26	15	0
October	25.1 °C	16.9 °C	20.7 °C	36.0 °C	7.4 °C	16	3	0
November	19.2 °C	11.1 °C	15.0 °C	31.9 °C	-0.6 °C	4	0	0
December	13.4 °C	5.2 °C	9.2 °C	26.5 °C	-6.4 °C	0	0	2

Rain, sun and wind month by month

Month	Rainfall	Wet days	Daylight	Cloud cover	Humidity	Wind
January	63 mm	9	11 h/day	63 %	75 %	13 km/h
February	74 mm	11	11 h/day	68 %	77 %	14 km/h
March	158 mm	17	12 h/day	74 %	80 %	14 km/h
April	174 mm	16	13 h/day	73 %	79 %	15 km/h
May	234 mm	17	13 h/day	73 %	80 %	14 km/h
June	268 mm	18	14 h/day	81 %	82 %	14 km/h
July	140 mm	13	14 h/day	71 %	73 %	15 km/h
August	146 mm	15	13 h/day	64 %	75 %	13 km/h
September	84 mm	10	12 h/day	55 %	75 %	13 km/h
October	57 mm	6	12 h/day	49 %	71 %	13 km/h
November	72 mm	8	11 h/day	53 %	74 %	12 km/h
December	53 mm	7	10 h/day	51 %	73 %	13 km/h

How Ji’an 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
Ji’an	34 °C	3.7 °C	1,523 mm	178
Xinyu · China	33 °C	3.1 °C	1,839 mm	166
Yichun · China	33 °C	3.1 °C	1,973 mm	162
Pingxiang · China	33 °C	2.7 °C	1,904 mm	162
Ganzhou · China	33 °C	4.5 °C	1,527 mm	188
Fuzhou · China	33 °C	3.0 °C	1,865 mm	172
Guankou · China	33 °C	2.6 °C	1,923 mm	164

Planning a trip? See the best time to visit Ji’an.

QuestionsCommon questions about Ji’an’s climate

When is the best time to visit Ji’an?

That depends on what you want, so the honest answer is a comparison rather than a single month. April, May, 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 Ji’an get?

In July, the warmest month, daily highs average 34 °C. About 100 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 3.7 °C in January, the coldest month. A normal year has 8 nights below freezing.

Which month is wettest in Ji’an?

June, averaging 268 mm over 18 days with rain. The driest month is December with 53 mm. The year as a whole averages 1,523 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 Ji’an 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: 27.117°, 114.979° (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.