Rugao climate
Rugao is warmest in July, with average highs of 31 °C, and coldest in January, when nights average -1.0 °C. June is the wettest month (219 mm) and December the driest (37 mm). Figures are 1991–2020 climate normals.
Across a full year Rugao averages 1,228 mm of rain, 129 days above 25 °C and 51 days below freezing.
China · population 257,400 · 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 -1.0 °C
- Driest month December 37 mm
- Wettest month June 219 mm
- Least cloud December 50 % cloud
- Hottest on record August 40 °C
- Coldest on record January -11 °C
What to expectRugao through the year
Rugao has a clear annual cycle: average daily highs run from 7.4 °C in January to 31 °C in July, a swing of 24 °C in mean temperature across the year.
Counted across a normal year, 129 days a year reach 25 °C, 53 of them reach 30 °C, 51 nights drop below freezing. The warmest reading in the 1991–2020 record is 40 °C, in August.
Rain is strongly seasonal. June averages 219 mm against 37 mm in December — 5.9 times as much. Planning around the dry months matters more here than planning around temperature.
Month by month
| Month | Avg high | Rainfall | Cloud |
|---|---|---|---|
| January | 7.4 °C | 54 mm | 58 % |
| February | 9.5 °C | 53 mm | 61 % |
| March | 13.9 °C | 76 mm | 65 % |
| April | 19.9 °C | 82 mm | 65 % |
| May | 25.0 °C | 108 mm | 67 % |
| June | 27.9 °C | 219 mm | 75 % |
| July | 31.0 °C | 215 mm | 71 % |
| August | 30.5 °C | 178 mm | 63 % |
| September | 26.6 °C | 99 mm | 57 % |
| October | 21.9 °C | 52 mm | 52 % |
| November | 16.2 °C | 54 mm | 51 % |
| December | 9.7 °C | 37 mm | 50 % |
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 | 7.4 °C | -1.0 °C | 3.1 °C | 20.5 °C | -10.9 °C | 0 | 0 | 20 |
| February | 9.5 °C | 0.6 °C | 4.9 °C | 24.7 °C | -8.2 °C | 0 | 0 | 13 |
| March | 13.9 °C | 4.7 °C | 8.9 °C | 26.9 °C | -5.0 °C | 0 | 0 | 4 |
| April | 19.9 °C | 10.3 °C | 14.7 °C | 32.0 °C | -2.3 °C | 4 | 0 | 0 |
| May | 25.0 °C | 15.8 °C | 20.0 °C | 36.8 °C | 5.2 °C | 15 | 3 | 0 |
| June | 27.9 °C | 20.2 °C | 23.7 °C | 37.4 °C | 12.9 °C | 24 | 8 | 0 |
| July | 31.0 °C | 24.5 °C | 27.4 °C | 37.9 °C | 16.8 °C | 30 | 20 | 0 |
| August | 30.5 °C | 24.2 °C | 26.9 °C | 40.4 °C | 16.0 °C | 30 | 18 | 0 |
| September | 26.6 °C | 19.7 °C | 22.8 °C | 35.3 °C | 10.1 °C | 21 | 3 | 0 |
| October | 21.9 °C | 13.7 °C | 17.5 °C | 30.6 °C | 2.5 °C | 4 | 0 | 0 |
| November | 16.2 °C | 7.7 °C | 11.7 °C | 27.5 °C | -6.7 °C | 0 | 0 | 1 |
| December | 9.7 °C | 1.1 °C | 5.3 °C | 20.7 °C | -9.8 °C | 0 | 0 | 13 |
Rain, sun and wind month by month
| Month | Rainfall | Wet days | Daylight | Cloud cover | Humidity | Wind |
|---|---|---|---|---|---|---|
| January | 54 mm | 7 | 10 h/day | 58 % | 72 % | 15 km/h |
| February | 53 mm | 8 | 11 h/day | 61 % | 73 % | 16 km/h |
| March | 76 mm | 9 | 12 h/day | 65 % | 73 % | 17 km/h |
| April | 82 mm | 9 | 13 h/day | 65 % | 72 % | 17 km/h |
| May | 108 mm | 9 | 14 h/day | 67 % | 74 % | 17 km/h |
| June | 219 mm | 12 | 14 h/day | 75 % | 80 % | 16 km/h |
| July | 215 mm | 15 | 14 h/day | 71 % | 83 % | 15 km/h |
| August | 178 mm | 15 | 13 h/day | 63 % | 83 % | 15 km/h |
| September | 99 mm | 9 | 12 h/day | 57 % | 80 % | 15 km/h |
| October | 52 mm | 6 | 11 h/day | 52 % | 74 % | 15 km/h |
| November | 54 mm | 7 | 11 h/day | 51 % | 73 % | 15 km/h |
| December | 37 mm | 5 | 10 h/day | 50 % | 71 % | 15 km/h |
How Rugao 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 |
|---|---|---|---|---|
| Rugao | 31 °C | -1.0 °C | 1,228 mm | 129 |
| Nantong · China | 31 °C | 0.1 °C | 1,254 mm | 127 |
| Jiangyin · China | 31 °C | -0.6 °C | 1,254 mm | 137 |
| Dongtai · China | 31 °C | -1.8 °C | 1,177 mm | 132 |
| Taizhou · China | 31 °C | -1.5 °C | 1,201 mm | 136 |
| Changshu · China | 32 °C | -0.2 °C | 1,283 mm | 138 |
| Changzhou · China | 31 °C | -0.5 °C | 1,258 mm | 138 |
Planning a trip? See the best time to visit Rugao.
QuestionsCommon questions about Rugao’s climate
When is the best time to visit Rugao?
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 Rugao get?
In July, the warmest month, daily highs average 31 °C. About 53 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 -1.0 °C in January, the coldest month. A normal year has 51 nights below freezing.
Which month is wettest in Rugao?
June, averaging 219 mm over 12 days with rain. The driest month is December with 37 mm. The year as a whole averages 1,228 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 Rugao 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
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.