Wuxi climate
Wuxi (Jiangsu, China) has a humid subtropical climate (Köppen Cfa). The average temperature over the year is 17 °C62 °F, and about 1,220 mm48 in of precipitation falls in an average year.
Temperature by month
Precipitation by month
Wuxi climate table
| Month | High °C°F | Low °C°F | Mean °C°F | Precip. mmin | Frost days |
|---|---|---|---|---|---|
| Jan | 744 | −131 | 338 | 612.4 | 18 |
| Feb | 1049 | 134 | 542 | 722.8 | 10 |
| Mar | 1559 | 542 | 1050 | 773.0 | 2 |
| Apr | 2170 | 1152 | 1661 | 993.9 | 0 |
| May | 2679 | 1763 | 2271 | 943.7 | 0 |
| Jun | 2985 | 2271 | 2678 | 1817.1 | 0 |
| Jul | 3290 | 2678 | 2984 | 2007.9 | 0 |
| Aug | 3289 | 2578 | 2883 | 1556.1 | 0 |
| Sep | 2882 | 2069 | 2475 | 1104.3 | 0 |
| Oct | 2373 | 1457 | 1965 | 642.5 | 0 |
| Nov | 1762 | 846 | 1254 | 642.5 | 1 |
| Dec | 949 | 134 | 541 | 441.7 | 12 |
| Year | 3290 | −131 | 1762 | 1,22048 | 43 |
“Year” row: highest monthly high, lowest monthly low, annual mean and annual total. Frost days are for the whole grid cell.
| Month | Humid. | Cloud | Solar | Daylight |
|---|---|---|---|---|
| Jan | 78% | 65% | 2.2 | 10:18 |
| Feb | 79% | 68% | 2.6 | 11:01 |
| Mar | 76% | 65% | 3.7 | 11:54 |
| Apr | 74% | 66% | 4.4 | 12:55 |
| May | 72% | 71% | 4.6 | 13:45 |
| Jun | 76% | 79% | 4.2 | 14:12 |
| Jul | 80% | 71% | 4.9 | 14:01 |
| Aug | 79% | 66% | 4.8 | 13:17 |
| Sep | 78% | 63% | 3.9 | 12:19 |
| Oct | 75% | 57% | 3.3 | 11:20 |
| Nov | 77% | 57% | 2.5 | 10:30 |
| Dec | 76% | 56% | 2.2 | 10:06 |
Humid. = average relative humidity at 2 m; cloud = average cloud amount; solar = average daily solar energy reaching the ground in kWh/m² (all-sky); daylight in hours:minutes, calculated for the 15th of each month.
What the climate of Wuxi is like
The warmest month is July, with an average high of 32 °C90 °F and a low of 26 °C78 °F. The coldest is January, when highs average 7 °C44 °F and lows −1 °C31 °F. Seasons are strongly marked: the warmest month is on average 25.8 °C46.4 °F warmer than the coldest.
It is wet, with about 1,220 mm48 in of precipitation per year. The wettest three-month stretch is June–August, which brings 44% of the annual total. The wettest month is July (200 mm7.9 in), the driest is December (44 mm1.7 in).
Relative humidity ranges from 72% in May to 80% in July. The clearest skies (lowest average cloud amount, 56%) are typical of December. Average wind speed near the ground ranges from 11 km/h (7 mph) in October to 13 km/h (8 mph) in April. Daylight lasts from about 10.1 hours in December to 14.2 hours in June.
Best time to visit Wuxi
Based on these averages, the most comfortable months for sightseeing and outdoor activities are April and May and October: average highs of 21 °C70 °F to 26 °C79 °F with 64 mm2.5 in to 99 mm3.9 in of precipitation per month.
The most challenging month is January, which is cold, with average highs of 7 °C44 °F.
Comfort score: months are ranked by how close they come to an average high of 21–28 °C (70–82 °F), lows above 5 °C (41 °F), little precipitation and moderate humidity. The best-ranked months of each place are recommended, even where none meets all of these. These are general rules of thumb applied to long-term averages.
Wuxi weather by month
- January7 °C44 °F / −1 °C31 °F
- February10 °C49 °F / 1 °C34 °F
- March15 °C59 °F / 5 °C42 °F
- April21 °C70 °F / 11 °C52 °F
- May26 °C79 °F / 17 °C63 °F
- June29 °C85 °F / 22 °C71 °F
- July32 °C90 °F / 26 °C78 °F
- August32 °C89 °F / 25 °C78 °F
- September28 °C82 °F / 20 °C69 °F
- October23 °C73 °F / 14 °C57 °F
- November17 °C62 °F / 8 °C46 °F
- December9 °C49 °F / 1 °C34 °F
What to pack for Wuxi
- Winter (December–February) — highs 744 to 10 °C49 °F, lows −131 to 1 °C34 °F, about 59 mm2.3 in of precipitation a month. Pack a warm coat, layers and closed shoes.
- Spring (March–May) — highs 1559 to 26 °C79 °F, lows 542 to 17 °C63 °F, about 90 mm3.5 in of precipitation a month. Pack light layers — T-shirts plus a light sweater or jacket.
- Summer (June–August) — highs 2985 to 32 °C90 °F, lows 2271 to 26 °C78 °F, about 179 mm7.0 in of precipitation a month. Pack very light, breathable clothing, a sun hat and plenty of water and an umbrella or light rain jacket.
- Autumn (September–November) — highs 1762 to 28 °C82 °F, lows 846 to 20 °C69 °F, about 79 mm3.1 in of precipitation a month. Pack light layers — T-shirts plus a light sweater or jacket.
How Wuxi compares
Compared with Suzhou, about 41 km to the southeast, Wuxi is on average 0.3 °C0.6 °F warmer and receives a similar amount of precipitation. The difference is largest in April (0.7 °C1.3 °F warmer).
Of the 547 places in China covered by World Climates, Wuxi is the 223rd warmest by annual mean temperature and the 186th wettest by annual precipitation. See all of them on the China climate page.
Places in other countries with the most similar temperature and rainfall pattern: Fayetteville (United States, Cfa), Tulsa (United States, Cfa) and Norman (United States, Cfa).
Nearby places
- Jiangyin 38 km · 16 °C61 °F · 1,145 mm45 in
- Changzhou 39 km · 16 °C61 °F · 1,145 mm45 in
- Zhangjiagang 41 km · 16 °C61 °F · 1,146 mm45 in
- Suzhou 41 km · 16 °C61 °F · 1,208 mm48 in
- Yixing 50 km · 17 °C62 °F · 1,220 mm48 in
- Kunshan 67 km · 17 °C62 °F · 1,242 mm49 in
- Nantong 76 km · 16 °C61 °F · 1,146 mm45 in
- Huzhou 80 km · 17 °C63 °F · 1,334 mm53 in
Frequently asked questions
What is the warmest month in Wuxi?
July is the warmest month in Wuxi, with an average high of 32 °C (90 °F) and an average low of 26 °C (78 °F).
What is the coldest month in Wuxi?
January is the coldest month, with an average high of 7 °C (44 °F) and an average low of -1 °C (31 °F).
When does it rain the most in Wuxi?
July is the wettest month with about 200 mm (7.9 in) of precipitation; December is the driest with about 44 mm (1.7 in).
What is the best time to visit Wuxi?
Judging by long-term averages, the most comfortable months are April and May and October.
About this data
All figures are 25-year averages (January 2001 – December 2025) from the NASA POWER project. Temperature, humidity, wind and precipitation come from the MERRA-2 reanalysis (precipitation is the bias-corrected MERRA-2 product), cloud and solar values from CERES satellite data. They describe a grid cell of roughly 50–70 km, not a single weather station, so they can differ from airport records — most of all on coasts, in mountains and for rainfall. Average highs and lows are the monthly mean temperature plus/minus half of the average daily temperature range. Counts of rainy days are not part of this dataset.