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Hangzhou, Zhejiang Weather by Month and Climate Averages
Monthly normals · Rain · Snow
Sunshine · Freeze dates · Records · Best time to visit
What is the weather like in Hangzhou, Zhejiang?
Hangzhou, Zhejiang gets 1531 mm of precipitation a year over about 146 rainy days. July is the warmest month (average high 34°C) and January the coldest (average low 2°C).
Humid subtropical climate
Hangzhou, Zhejiang has hot summers and chilly winters. Daytime highs range from about 9°C in January to 34°C in July. June is usually the wettest month. The most comfortable time to visit is typically April and October to November, when daytime highs sit near 21°C.
| Season | Months | Avg low | Avg high |
|---|---|---|---|
| Winter | Dec–Feb | 3° | 11° |
| Spring | Mar–May | 13° | 22° |
| Summer | Jun–Aug | 24° | 32° |
| Autumn | Sep–Nov | 16° | 23° |
How much rain does Hangzhou get?
Hangzhou gets 1531 mm of precipitation in an average year, spread over about 146 days with measurable rain. That is more rainy days than 84% of China.
June is the wettest month, with 262 mm. December is the driest, with 67 mm. June has the most rainy days, about 15.
The longest dry spell in the last five years lasted 18 days, to December 31, 2024.
Hangzhou weather by month
Hangzhou weather in January
In January, Hangzhou averages a high of 8°C and a low of 2°C. It gets 97 mm of precipitation over about 12 rainy days. Estimated sunshine is 43% of daylight hours, derived from ERA5 cloud cover. The January record high is 24°C (2020) and the record low is -8°C (1977).
Hangzhou weather in February
In February, Hangzhou averages a high of 11°C and a low of 4°C. It gets 93 mm of precipitation over about 12 rainy days. Estimated sunshine is 31% of daylight hours, derived from ERA5 cloud cover. The February record high is 28°C (2009) and the record low is -6°C (1979).
Hangzhou weather in March
In March, Hangzhou averages a high of 16°C and a low of 7°C. It gets 140 mm of precipitation over about 15 rainy days. Estimated sunshine is 33% of daylight hours, derived from ERA5 cloud cover. The March record high is 34°C (2025) and the record low is -2°C (2010).
Hangzhou weather in April
In April, Hangzhou averages a high of 22°C and a low of 13°C. It gets 120 mm of precipitation over about 13 rainy days. Estimated sunshine is 30% of daylight hours, derived from ERA5 cloud cover. The April record high is 35°C (2023) and the record low is 0°C (1972). April is one of the most comfortable months to visit.
Hangzhou weather in May
In May, Hangzhou averages a high of 27°C and a low of 18°C. It gets 130 mm of precipitation over about 13 rainy days. Estimated sunshine is 26% of daylight hours, derived from ERA5 cloud cover. The May record high is 37°C (2023) and the record low is 9°C (1981).
Hangzhou weather in June
In June, Hangzhou averages a high of 29°C and a low of 22°C. It gets 262 mm of precipitation over about 15 rainy days. Estimated sunshine is 15% of daylight hours, derived from ERA5 cloud cover. The June record high is 38°C (2025) and the record low is 13°C (1987).
Hangzhou weather in July
In July, Hangzhou averages a high of 34°C and a low of 26°C. It gets 172 mm of precipitation over about 12 rainy days. Estimated sunshine is 19% of daylight hours, derived from ERA5 cloud cover. The July record high is 41°C (2022) and the record low is 17°C (2015).
Hangzhou weather in August
In August, Hangzhou averages a high of 33°C and a low of 25°C. It gets 178 mm of precipitation over about 13 rainy days. Estimated sunshine is 41% of daylight hours, derived from ERA5 cloud cover. The August record high is 42°C (2024) and the record low is 18°C (2019).
Hangzhou weather in September
In September, Hangzhou averages a high of 29°C and a low of 21°C. It gets 117 mm of precipitation over about 11 rainy days. Estimated sunshine is 38% of daylight hours, derived from ERA5 cloud cover. The September record high is 39°C (2024) and the record low is 12°C (1987).
Hangzhou weather in October
In October, Hangzhou averages a high of 24°C and a low of 16°C. It gets 77 mm of precipitation over about 8 rainy days. Estimated sunshine is 41% of daylight hours, derived from ERA5 cloud cover. The October record high is 38°C (2022) and the record low is 4°C (1970). October is one of the most comfortable months to visit.
Hangzhou weather in November
In November, Hangzhou averages a high of 18°C and a low of 10°C. It gets 78 mm of precipitation over about 11 rainy days. Estimated sunshine is 49% of daylight hours, derived from ERA5 cloud cover. The November record high is 32°C (2023) and the record low is -2°C (1993). November is one of the most comfortable months to visit.
Hangzhou weather in December
In December, Hangzhou averages a high of 11°C and a low of 4°C. It gets 67 mm of precipitation over about 9 rainy days. Estimated sunshine is 55% of daylight hours, derived from ERA5 cloud cover. The December record high is 25°C (2023) and the record low is -8°C (1991).
Sunshine, humidity and wind in Hangzhou
December is the sunniest month in Hangzhou, with estimated sunshine of 55% of daylight hours from ERA5 cloud cover. June is the cloudiest, at 15%. The annual cloud-cover estimate is 35% of daylight hours; it is not a measurement of sunshine duration. Hangzhou is cloudier than 77% of China.
Humidity peaks in June at 80% and is lowest in December at 67%.
Hangzhou has about 52 days a year above 32°C. Hangzhou is hotter than 78% of China.
First and last freeze in Hangzhou
The first fall freeze in Hangzhou typically comes around December 10, and the last spring freeze around February 23. That leaves a frost-free growing season of about 290 days.
Hangzhou weather records
These records cover HANGZHOU during 1970–2025. Earlier records or other stations in the city may differ.
The hottest temperature on record at the Hangzhou station is 42°C, on August 3, 2024. The coldest is -8°C, on January 5, 1977.
The wettest day in the available station history brought 226 mm of precipitation, on October 7, 2013.
43 all-time records have been set at the station since 1970.
The annual mean temperature has changed by +0.5°C per decade since 1970.
The best time to visit Hangzhou
The most comfortable time to visit is typically April and October to November, when daytime highs sit near 21°C.
Winter (December–February) is chilly, with average highs around 10°C and lows near 3°C.
Spring (March–May) is warm, with average highs around 21°C and lows near 13°C.
Summer (June–August) is hot, with average highs around 32°C and lows near 24°C. It can feel humid.
Autumn (September–November) is warm, with average highs around 23°C and lows near 16°C.
Monthly climate
| Month | Average low | Average high | Precip | Rain days | Humidity | Estimated sunshine | Record high | Record low |
|---|---|---|---|---|---|---|---|---|
| January | 2° | 8° | 97 mm | 12 | 70% | 43% | 24° | -8° |
| February | 4° | 11° | 93 mm | 12 | 75% | 31% | 28° | -6° |
| March | 7° | 16° | 140 mm | 15 | 70% | 33% | 34° | -2° |
| April | 13° | 22° | 120 mm | 13 | 69% | 30% | 35° | 0° |
| May | 18° | 27° | 130 mm | 13 | 70% | 26% | 37° | 9° |
| June | 22° | 29° | 262 mm | 15 | 80% | 15% | 38° | 13° |
| July | 26° | 34° | 172 mm | 12 | 74% | 19% | 41° | 17° |
| August | 25° | 33° | 178 mm | 13 | 69% | 41% | 42° | 18° |
| September | 21° | 29° | 117 mm | 11 | 77% | 38% | 39° | 12° |
| October | 16° | 24° | 77 mm | 8 | 75% | 41% | 38° | 4° |
| November | 10° | 18° | 78 mm | 11 | 72% | 49% | 32° | -2° |
| December | 4° | 11° | 67 mm | 9 | 67% | 55% | 25° | -8° |
Station: HANGZHOU, 7 km from the city. Temperature normal baseline: 1991–2020, calculated from available NOAA GHCN-Daily observations. Available station history: 1970–2025; record values refer to this station and period, not the entire city’s history. Precipitation includes rain and the water equivalent of frozen precipitation; snowfall depth is shown separately when available. Sources and methods
From ERA5 reanalysis. Sunshine is estimated from cloud cover.
Hangzhou climate questions
How much rain does Hangzhou get?
Hangzhou gets 1531 mm of precipitation in an average year, over about 146 rainy days.
What is the wettest month in Hangzhou?
June is the wettest month in Hangzhou, with 262 mm. December is the driest, with 67 mm.
How many rainy days does Hangzhou have a year?
Hangzhou has about 146 days with measurable rain in an average year. June has the most, about 15.
What is the hottest month in Hangzhou?
July is the warmest month in Hangzhou, with an average high of 34°C.
What is the coldest month in Hangzhou?
January is the coldest month in Hangzhou, with an average low of 2°C.
What is the record high temperature in Hangzhou?
Within the available 1970–2025 station history, the record high at the Hangzhou station is 42°C, set on August 3, 2024. The record low is -8°C, on January 5, 1977.
What is the sunniest month in Hangzhou?
December is the sunniest month in Hangzhou, with estimated sunshine of 55% of daylight hours from ERA5 cloud cover. June is the cloudiest.
When is the first frost in Hangzhou?
The first fall freeze in Hangzhou typically comes around December 10. The last spring freeze is around February 23.
What is the best time to visit Hangzhou?
The most comfortable time to visit is typically April and October to November, when daytime highs sit near 21°C.