Suzhou climate
Suzhou (Anhui, China) has a humid subtropical climate (Köppen Cfa). The average temperature over the year is 15 °C59 °F, and about 913 mm36 in of precipitation falls in an average year.
Temperature by month
Precipitation by month
Suzhou climate table
| Month | High °C°F | Low °C°F | Mean °C°F | Precip. mmin | Frost days |
|---|---|---|---|---|---|
| Jan | 642 | −424 | 133 | 251.0 | 28 |
| Feb | 1049 | −228 | 439 | 311.2 | 19 |
| Mar | 1661 | 236 | 949 | 381.5 | 8 |
| Apr | 2373 | 948 | 1660 | 522.0 | 0 |
| May | 2883 | 1559 | 2271 | 763.0 | 0 |
| Jun | 3289 | 2068 | 2678 | 1264.9 | 0 |
| Jul | 3290 | 2474 | 2882 | 2208.7 | 0 |
| Aug | 3188 | 2373 | 2781 | 1596.3 | 0 |
| Sep | 2882 | 1763 | 2272 | 823.2 | 0 |
| Oct | 2272 | 1050 | 1661 | 421.6 | 0 |
| Nov | 1559 | 337 | 948 | 401.6 | 6 |
| Dec | 846 | −326 | 236 | 230.9 | 24 |
| Year | 3290 | −424 | 1559 | 91336 | 86 |
“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 | 71% | 59% | 2.2 | 10:09 |
| Feb | 71% | 64% | 2.7 | 10:56 |
| Mar | 66% | 62% | 3.9 | 11:53 |
| Apr | 65% | 67% | 4.6 | 12:59 |
| May | 64% | 70% | 5.0 | 13:53 |
| Jun | 68% | 71% | 4.9 | 14:22 |
| Jul | 78% | 73% | 4.6 | 14:11 |
| Aug | 80% | 66% | 4.5 | 13:23 |
| Sep | 75% | 62% | 3.9 | 12:20 |
| Oct | 70% | 54% | 3.2 | 11:16 |
| Nov | 71% | 53% | 2.5 | 10:22 |
| Dec | 70% | 53% | 2.2 | 9:56 |
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 Suzhou is like
The warmest month is July, with an average high of 32 °C90 °F and a low of 24 °C74 °F. The coldest is January, when highs average 6 °C42 °F and lows −4 °C24 °F. Seasons are strongly marked: the warmest month is on average 27.3 °C49.2 °F warmer than the coldest.
Annual precipitation is moderate at about 913 mm36 in. The wettest three-month stretch is June–August, which brings 55% of the annual total. The wettest month is July (220 mm8.7 in), the driest is December (23 mm0.9 in).
Relative humidity ranges from 64% in May to 80% in August. The clearest skies (lowest average cloud amount, 53%) are typical of December. Average wind speed near the ground ranges from 7 km/h (4 mph) in September to 9 km/h (6 mph) in April. Daylight lasts from about 9.9 hours in December to 14.4 hours in June.
Best time to visit Suzhou
Based on these averages, the most comfortable months for sightseeing and outdoor activities are April and May and September and October: average highs of 22 °C72 °F to 28 °C83 °F with 42 mm1.6 in to 82 mm3.2 in of precipitation per month.
The most challenging month is January, which is cold, with average highs of 6 °C42 °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.
Suzhou weather by month
- January6 °C42 °F / −4 °C24 °F
- February10 °C49 °F / −2 °C28 °F
- March16 °C61 °F / 2 °C36 °F
- April23 °C73 °F / 9 °C48 °F
- May28 °C83 °F / 15 °C59 °F
- June32 °C89 °F / 20 °C68 °F
- July32 °C90 °F / 24 °C74 °F
- August31 °C88 °F / 23 °C73 °F
- September28 °C82 °F / 17 °C63 °F
- October22 °C72 °F / 10 °C50 °F
- November15 °C59 °F / 3 °C37 °F
- December8 °C46 °F / −3 °C26 °F
What to pack for Suzhou
- Winter (December–February) — highs 642 to 10 °C49 °F, lows −424 to −2 °C28 °F, about 26 mm1.0 in of precipitation a month. Pack a warm coat, layers and closed shoes, an extra layer for the cooler mornings and evenings and shoes with good grip, as frost is common.
- Spring (March–May) — highs 1661 to 28 °C83 °F, lows 236 to 15 °C59 °F, about 55 mm2.2 in of precipitation a month. Pack light layers — T-shirts plus a light sweater or jacket and an extra layer for the cooler mornings and evenings.
- Summer (June–August) — highs 3188 to 32 °C90 °F, lows 2068 to 24 °C74 °F, about 168 mm6.6 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 1559 to 28 °C82 °F, lows 337 to 17 °C63 °F, about 54 mm2.1 in of precipitation a month. Pack light layers — T-shirts plus a light sweater or jacket and an extra layer for the cooler mornings and evenings.
How Suzhou compares
Compared with Huainan, about 112 km to the south, Suzhou is on average 0.6 °C1.1 °F cooler and receives 14% less precipitation (913 mm36 in vs 1,059 mm42 in). The difference is largest in November (1.1 °C2 °F cooler).
Of the 547 places in China covered by World Climates, Suzhou is the 294th warmest by annual mean temperature and the 271st 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: Wichita (United States, Cfa), Oklahoma City (United States, Cfa) and Tulsa (United States, Cfa).
Nearby places
- Huaibei 41 km · 15 °C59 °F · 855 mm34 in
- Tongshan 63 km · 15 °C59 °F · 855 mm34 in
- Xuzhou 69 km · 15 °C59 °F · 884 mm35 in
- Yunlong 73 km · 15 °C59 °F · 832 mm33 in
- Bengbu 85 km · 15 °C60 °F · 1,015 mm40 in
- Suicheng 93 km · 15 °C59 °F · 902 mm36 in
- Huainan 112 km · 16 °C60 °F · 1,059 mm42 in
- Bozhou 115 km · 15 °C60 °F · 790 mm31 in
Frequently asked questions
What is the warmest month in Suzhou?
July is the warmest month in Suzhou, with an average high of 32 °C (90 °F) and an average low of 24 °C (74 °F).
What is the coldest month in Suzhou?
January is the coldest month, with an average high of 6 °C (42 °F) and an average low of -4 °C (24 °F).
When does it rain the most in Suzhou?
July is the wettest month with about 220 mm (8.7 in) of precipitation; December is the driest with about 23 mm (0.9 in).
What is the best time to visit Suzhou?
Judging by long-term averages, the most comfortable months are April and May and September 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.