Hangzhou climate
Hangzhou (Zhejiang, China) has a humid subtropical climate (Köppen Cfa). The average temperature over the year is 17 °C63 °F, and about 1,427 mm56 in of precipitation falls in an average year.
Temperature by month
Precipitation by month
Hangzhou climate table
| Month | High °C°F | Low °C°F | Mean °C°F | Precip. mmin | Frost days |
|---|---|---|---|---|---|
| Jan | 847 | −130 | 439 | 783.1 | 18 |
| Feb | 1152 | 134 | 643 | 903.6 | 11 |
| Mar | 1661 | 541 | 1151 | 1064.2 | 3 |
| Apr | 2272 | 1151 | 1662 | 1154.5 | 0 |
| May | 2781 | 1661 | 2271 | 1244.9 | 0 |
| Jun | 3086 | 2169 | 2577 | 2309.1 | 0 |
| Jul | 3391 | 2577 | 2984 | 1686.6 | 0 |
| Aug | 3391 | 2476 | 2883 | 1777.0 | 0 |
| Sep | 2984 | 2068 | 2476 | 1295.1 | 0 |
| Oct | 2475 | 1356 | 1966 | 742.9 | 0 |
| Nov | 1864 | 745 | 1355 | 773.0 | 1 |
| Dec | 1151 | 133 | 642 | 592.3 | 14 |
| Year | 3391 | −130 | 1763 | 1,42756 | 48 |
“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 | 80% | 67% | 2.1 | 10:23 |
| Feb | 81% | 69% | 2.5 | 11:05 |
| Mar | 79% | 68% | 3.5 | 11:55 |
| Apr | 77% | 70% | 4.2 | 12:52 |
| May | 76% | 72% | 4.5 | 13:40 |
| Jun | 80% | 81% | 4.0 | 14:05 |
| Jul | 82% | 71% | 5.1 | 13:55 |
| Aug | 81% | 65% | 4.8 | 13:14 |
| Sep | 80% | 66% | 3.8 | 12:18 |
| Oct | 77% | 60% | 3.3 | 11:23 |
| Nov | 78% | 61% | 2.4 | 10:35 |
| Dec | 78% | 59% | 2.2 | 10:12 |
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 Hangzhou is like
The warmest month is July, with an average high of 33 °C91 °F and a low of 25 °C77 °F. The coldest is January, when highs average 8 °C47 °F and lows −1 °C30 °F. Seasons are strongly marked: the warmest month is on average 25 °C45 °F warmer than the coldest.
It is wet, with about 1,427 mm56 in of precipitation per year. The wettest three-month stretch is June–August, which brings 40% of the annual total. The wettest month is June (230 mm9.1 in), the driest is December (59 mm2.3 in).
Relative humidity ranges from 76% in May to 82% in July. The clearest skies (lowest average cloud amount, 59%) are typical of December. Average wind speed near the ground ranges from 7 km/h (4 mph) in July to 9 km/h (5 mph) in March. Daylight lasts from about 10.2 hours in December to 14.1 hours in June.
Best time to visit Hangzhou
Based on these averages, the most comfortable months for sightseeing and outdoor activities are October: average highs of 24 °C75 °F to 24 °C75 °F with 74 mm2.9 in to 74 mm2.9 in of precipitation per month.
The most challenging month is January, which is cold, with average highs of 8 °C47 °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.
Hangzhou weather by month
- January8 °C47 °F / −1 °C30 °F
- February11 °C52 °F / 1 °C34 °F
- March16 °C61 °F / 5 °C41 °F
- April22 °C72 °F / 11 °C51 °F
- May27 °C81 °F / 16 °C61 °F
- June30 °C86 °F / 21 °C69 °F
- July33 °C91 °F / 25 °C77 °F
- August33 °C91 °F / 24 °C76 °F
- September29 °C84 °F / 20 °C68 °F
- October24 °C75 °F / 13 °C56 °F
- November18 °C64 °F / 7 °C45 °F
- December11 °C51 °F / 1 °C33 °F
What to pack for Hangzhou
- Winter (December–February) — highs 847 to 11 °C52 °F, lows −130 to 1 °C34 °F, about 76 mm3.0 in of precipitation a month. Pack a warm coat, layers and closed shoes.
- Spring (March–May) — highs 1661 to 27 °C81 °F, lows 541 to 16 °C61 °F, about 115 mm4.5 in of precipitation a month. Pack light layers — T-shirts plus a light sweater or jacket, an extra layer for the cooler mornings and evenings and an umbrella or light rain jacket.
- Summer (June–August) — highs 3086 to 33 °C91 °F, lows 2169 to 25 °C77 °F, about 192 mm7.5 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 1864 to 29 °C84 °F, lows 745 to 20 °C68 °F, about 94 mm3.7 in of precipitation a month. Pack light layers — T-shirts plus a light sweater or jacket, an extra layer for the cooler mornings and evenings and an umbrella or light rain jacket.
How Hangzhou compares
Compared with Shanghai, about 161 km to the northeast, Hangzhou has practically the same average temperature and receives 11% more precipitation (1,427 mm56 in vs 1,286 mm51 in). The difference is largest in April (1.2 °C2.1 °F warmer).
Of the 547 places in China covered by World Climates, Hangzhou is the 213th warmest by annual mean temperature and the 128th 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), Little Rock (United States, Cfa) and Memphis (United States, Cfa).
Nearby places
- Chóngfú 37 km · 17 °C63 °F · 1,394 mm55 in
- Shaoxing 52 km · 17 °C63 °F · 1,460 mm57 in
- Huzhou 64 km · 17 °C63 °F · 1,334 mm53 in
- Jiaxing 76 km · 17 °C62 °F · 1,316 mm52 in
- Lianghu 78 km · 17 °C63 °F · 1,460 mm57 in
- Puyang 97 km · 17 °C63 °F · 1,455 mm57 in
- Taozhou 99 km · 16 °C61 °F · 1,409 mm55 in
- Cixi 105 km · 17 °C63 °F · 1,442 mm57 in
Frequently asked questions
What is the warmest month in Hangzhou?
July is the warmest month in Hangzhou, with an average high of 33 °C (91 °F) and an average low of 25 °C (77 °F).
What is the coldest month in Hangzhou?
January is the coldest month, with an average high of 8 °C (47 °F) and an average low of -1 °C (30 °F).
When does it rain the most in Hangzhou?
June is the wettest month with about 230 mm (9.1 in) of precipitation; December is the driest with about 59 mm (2.3 in).
What is the best time to visit Hangzhou?
Judging by long-term averages, the most comfortable months are 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.
The grid cell’s average elevation is 71 m, while Hangzhou lies at about 12 m. Temperatures on this page were therefore adjusted by +0.4 °C0.7 °F using the standard lapse rate of 6.5 °C per 1,000 m.