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Chaohu, Anhui Weather by Month and Climate Averages
Monthly normals · Rain · Snow
Sunshine · Freeze dates · Records · Best time to visit
What is the weather like in Chaohu, Anhui?
Chaohu, Anhui gets 1072 mm of precipitation a year over about 111 rainy days. July is the warmest month (average high 33°C) and January the coldest (average low -1°C).
Humid subtropical climate
Chaohu, Anhui has hot summers and chilly winters. Daytime highs range from about 7°C in January to 33°C in July. July is usually the wettest month. The most comfortable time to visit is typically April and October, when daytime highs sit near 22°C.
| Season | Months | Avg low | Avg high |
|---|---|---|---|
| Winter | Dec–Feb | 1° | 9° |
| Spring | Mar–May | 12° | 21° |
| Summer | Jun–Aug | 24° | 32° |
| Autumn | Sep–Nov | 13° | 22° |
How much rain does Chaohu get?
Chaohu gets 1072 mm of precipitation in an average year, spread over about 111 days with measurable rain. That is more rainy days than 60% of China.
July is the wettest month, with 187 mm. December is the driest, with 35 mm. July has the most rainy days, about 12.
The longest dry spell in the last five years lasted 44 days, to January 23, 2025.
Chaohu weather by month
Chaohu weather in January
In January, Chaohu averages a high of 7°C and a low of -1°C. It gets 50 mm of precipitation over about 9 rainy days. Estimated sunshine is 44% of daylight hours, derived from ERA5 cloud cover. The January record high is 22°C (2023) and the record low is -12°C (1984).
Chaohu weather in February
In February, Chaohu averages a high of 10°C and a low of 2°C. It gets 54 mm of precipitation over about 9 rainy days. Estimated sunshine is 36% of daylight hours, derived from ERA5 cloud cover. The February record high is 29°C (2021) and the record low is -11°C (2008).
Chaohu weather in March
In March, Chaohu averages a high of 15°C and a low of 6°C. It gets 78 mm of precipitation over about 10 rainy days. Estimated sunshine is 37% of daylight hours, derived from ERA5 cloud cover. The March record high is 32°C (2025) and the record low is -4°C (2006).
Chaohu weather in April
In April, Chaohu averages a high of 22°C and a low of 12°C. It gets 89 mm of precipitation over about 9 rainy days. Estimated sunshine is 34% of daylight hours, derived from ERA5 cloud cover. The April record high is 34°C (2011) and the record low is 1°C (1987). April is one of the most comfortable months to visit.
Chaohu weather in May
In May, Chaohu averages a high of 27°C and a low of 18°C. It gets 96 mm of precipitation over about 10 rainy days. Estimated sunshine is 33% of daylight hours, derived from ERA5 cloud cover. The May record high is 37°C (2020) and the record low is 8°C (2004).
Chaohu weather in June
In June, Chaohu averages a high of 29°C and a low of 22°C. It gets 162 mm of precipitation over about 11 rainy days. Estimated sunshine is 27% of daylight hours, derived from ERA5 cloud cover. The June record high is 38°C (2022) and the record low is 12°C (1987).
Chaohu weather in July
In July, Chaohu averages a high of 33°C and a low of 25°C. It gets 187 mm of precipitation over about 12 rainy days. Estimated sunshine is 21% of daylight hours, derived from ERA5 cloud cover. The July record high is 41°C (2017) and the record low is 18°C (1974).
Chaohu weather in August
In August, Chaohu averages a high of 32°C and a low of 24°C. It gets 139 mm of precipitation over about 12 rainy days. Estimated sunshine is 41% of daylight hours, derived from ERA5 cloud cover. The August record high is 41°C (2003) and the record low is 16°C (2009).
Chaohu weather in September
In September, Chaohu averages a high of 28°C and a low of 20°C. It gets 74 mm of precipitation over about 8 rainy days. Estimated sunshine is 45% of daylight hours, derived from ERA5 cloud cover. The September record high is 38°C (1995) and the record low is 11°C (1982).
Chaohu weather in October
In October, Chaohu averages a high of 23°C and a low of 14°C. It gets 52 mm of precipitation over about 8 rainy days. Estimated sunshine is 46% of daylight hours, derived from ERA5 cloud cover. The October record high is 34°C (1998) and the record low is 0°C (2024). October is one of the most comfortable months to visit.
Chaohu weather in November
In November, Chaohu averages a high of 16°C and a low of 7°C. It gets 56 mm of precipitation over about 8 rainy days. Estimated sunshine is 56% of daylight hours, derived from ERA5 cloud cover. The November record high is 31°C (2023) and the record low is -5°C (1979).
Chaohu weather in December
In December, Chaohu averages a high of 10°C and a low of 2°C. It gets 35 mm of precipitation over about 7 rainy days. Estimated sunshine is 58% of daylight hours, derived from ERA5 cloud cover. The December record high is 24°C (2023) and the record low is -13°C (1991).
Sunshine, humidity and wind in Chaohu
December is the sunniest month in Chaohu, with estimated sunshine of 58% of daylight hours from ERA5 cloud cover. July is the cloudiest, at 21%. The annual cloud-cover estimate is 40% of daylight hours; it is not a measurement of sunshine duration. Chaohu is cloudier than 65% of China.
Humidity peaks in July at 81% and is lowest in December at 65%.
Chaohu has about 45 days a year above 32°C. Chaohu is hotter than 65% of China.
First and last freeze in Chaohu
The first fall freeze in Chaohu typically comes around November 30, and the last spring freeze around March 3. That leaves a frost-free growing season of about 272 days.
Chaohu weather records
These records cover HEFEI during 1970–2025. Earlier records or other stations in the city may differ.
The hottest temperature on record at the Chaohu station is 41°C, on July 27, 2017. The coldest is -13°C, on December 29, 1991.
The wettest day in the available station history brought 239 mm of precipitation, on June 13, 1984.
43 all-time records have been set at the station since 1970.
The annual mean temperature has changed by +0.4°C per decade since 1970.
The best time to visit Chaohu
The most comfortable time to visit is typically April and October, when daytime highs sit near 22°C.
Winter (December–February) is chilly, with average highs around 9°C and lows near 1°C.
Spring (March–May) is warm, with average highs around 21°C and lows near 12°C.
Summer (June–August) is hot, with average highs around 31°C and lows near 24°C. It can feel humid.
Autumn (September–November) is warm, with average highs around 22°C and lows near 14°C.
Monthly climate
| Month | Average low | Average high | Precip | Rain days | Humidity | Estimated sunshine | Record high | Record low |
|---|---|---|---|---|---|---|---|---|
| January | -1° | 7° | 50 mm | 9 | 73% | 44% | 22° | -12° |
| February | 2° | 10° | 54 mm | 9 | 74% | 36% | 29° | -11° |
| March | 6° | 15° | 78 mm | 10 | 69% | 37% | 32° | -4° |
| April | 12° | 22° | 89 mm | 9 | 68% | 34% | 34° | 1° |
| May | 18° | 27° | 96 mm | 10 | 71% | 33% | 37° | 8° |
| June | 22° | 29° | 162 mm | 11 | 78% | 27% | 38° | 12° |
| July | 25° | 33° | 187 mm | 12 | 81% | 21% | 41° | 18° |
| August | 24° | 32° | 139 mm | 12 | 76% | 41% | 41° | 16° |
| September | 20° | 28° | 74 mm | 8 | 76% | 45% | 38° | 11° |
| October | 14° | 23° | 52 mm | 8 | 74% | 46% | 34° | 0° |
| November | 7° | 16° | 56 mm | 8 | 71% | 56% | 31° | -5° |
| December | 2° | 10° | 35 mm | 7 | 65% | 58% | 24° | -13° |
Station: HEFEI, 67 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.
Chaohu climate questions
How much rain does Chaohu get?
Chaohu gets 1072 mm of precipitation in an average year, over about 111 rainy days.
What is the wettest month in Chaohu?
July is the wettest month in Chaohu, with 187 mm. December is the driest, with 35 mm.
How many rainy days does Chaohu have a year?
Chaohu has about 111 days with measurable rain in an average year. July has the most, about 12.
What is the hottest month in Chaohu?
July is the warmest month in Chaohu, with an average high of 33°C.
What is the coldest month in Chaohu?
January is the coldest month in Chaohu, with an average low of -1°C.
What is the record high temperature in Chaohu?
Within the available 1970–2025 station history, the record high at the Chaohu station is 41°C, set on July 27, 2017. The record low is -13°C, on December 29, 1991.
What is the sunniest month in Chaohu?
December is the sunniest month in Chaohu, with estimated sunshine of 58% of daylight hours from ERA5 cloud cover. July is the cloudiest.
When is the first frost in Chaohu?
The first fall freeze in Chaohu typically comes around November 30. The last spring freeze is around March 3.
What is the best time to visit Chaohu?
The most comfortable time to visit is typically April and October, when daytime highs sit near 22°C.