Climate averages 1991–2020
Ji’an weather
by month.
See how the year changes. July has the highest average daily maximum; December has the lowest average monthly rainfall.
Pleasant-weather months by our simple rule: OctoberNovember
Long-term climate patterns, not a forecast for a particular trip.
Across the year Ji’an averages a daytime high of 23.2°C and a nighttime low of 15.6°C, with about 1,514 mm of rain on roughly 148 days. July is the warmest month (average high 33.5°C) and January the coolest (11.3°C). June is the wettest month with 269 mm; December is the driest with 52 mm.
Months with pleasant weather by a simple rule (average high between 18°C and 29°C, average low of at least 5°C and at most 8 rain days): October and November. This looks at temperature and rain only, not humidity, wind, sea temperature or crowds.
The annual picture
A year in Ji’an
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Ji’an climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 11.3°C4.1°C | 4.1°C | 62 | 8.9 | 10.611 h |
| February | 14.1°C6.3°C | 6.3°C | 74 | 10.9 | 11.211 h |
| March | 17.7°C9.9°C | 9.9°C | 153 | 16.9 | 12.012 h |
| April | 23.7°C15.5°C | 15.5°C | 176 | 17.4 | 12.813 h |
| May | 27.6°C20.1°C | 20.1°C | 235 | 17.1 | 13.513 h |
| June | 30.0°C23.6°C | 23.6°C | 269 | 17.9 | 13.814 h |
| July | 33.5°C26.2°C | 26.2°C | 133 | 12.5 | 13.714 h |
| August | 33.1°C25.8°C | 25.8°C | 147 | 15.7 | 13.113 h |
| September | 29.7°C22.2°C | 22.2°C | 85 | 10.1 | 12.312 h |
| October | 25.1°C16.9°C | 16.9°C | 56 | 6.3 | 11.512 h |
| November | 19.3°C11.2°C | 11.2°C | 71 | 7.8 | 10.811 h |
| December | 13.4°C5.6°C | 5.6°C | 52 | 6.7 | 10.510 h |
Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
Nearby cities
- DunhouChina · 11 kmHigh 23.3°C · Low 15.7°C · 1,514 mm rain a year
- XinyuChina · 77 kmHigh 22.6°C · Low 15.2°C · 1,852 mm rain a year
- AoxiChina · 91 kmHigh 22.5°C · Low 14.6°C · 1,718 mm rain a year
- YichunChina · 98 kmHigh 22.2°C · Low 15.0°C · 2,047 mm rain a year
- PingxiangChina · 124 kmHigh 22.3°C · Low 14.5°C · 1,946 mm rain a year
- BashanChina · 128 kmHigh 22.8°C · Low 15.0°C · 1,808 mm rain a year
- XujiangChina · 136 kmHigh 23.5°C · Low 15.2°C · 1,968 mm rain a year
- GanzhouChina · 141 kmHigh 23.8°C · Low 16.0°C · 1,494 mm rain a year
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsWhat do the high and low temperatures mean?
We average the daily maximum and daily minimum for each calendar month over 1991–2020. They are not record extremes, a forecast range or temperatures at a fixed time of day.
How is a rain day counted?
A local calendar day (standard time, UTC+8, no daylight saving) with at least 1 mm of total precipitation counts as one rain day. We count these for each year and month, then average across 30 years. The average does not predict which days will be wet.
Where do the numbers come from?
ERA5-Land (temperature) and ERA5 (precipitation) reanalysis from the Copernicus Climate Change Service, read from the Open-Meteo open-data archive. Temperature comes from the 0.1° model cell at 27.10°, 115.00° (3 km from the city centre). Rain comes from the 0.25° cell at 27.00°, 115.00°. Dunhou lies in the same rainfall cell, so its rainfall figures are identical to these; temperatures differ because they come from smaller 0.1° cells. These are model estimates, not weather-station readings; coast, hills and city streets can differ.
Does this page show sunshine, humidity or sea temperature?
No. The data used here contain air temperature and precipitation only. Daylight hours are calculated from the city's latitude (sunrise to sunset), not measured sunshine.