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Mengzi, Yunnan Weather by Month and Climate Averages
Monthly normals · Rain · Snow
Sunshine · Freeze dates · Records · Best time to visit
What is the weather like in Mengzi, Yunnan?
Mengzi, Yunnan gets 833 mm of precipitation a year over about 117 rainy days. May is the warmest month (average high 28°C) and January the coldest (average low 9°C).
Subtropical monsoon climate
Mengzi, Yunnan has hot summers and mild winters. Daytime highs range from about 19°C in January to 28°C in June. July is usually the wettest month. The most comfortable time to visit is typically January to March and October to December, when daytime highs sit near 22°C.
| Season | Months | Avg low | Avg high |
|---|---|---|---|
| Winter | Dec–Feb | 9° | 20° |
| Spring | Mar–May | 17° | 27° |
| Summer | Jun–Aug | 20° | 28° |
| Autumn | Sep–Nov | 16° | 24° |
How much rain does Mengzi get?
Mengzi gets 833 mm of precipitation in an average year, spread over about 117 days with measurable rain. That is more rainy days than 65% of China.
July is the wettest month, with 166 mm. February is the driest, with 16 mm. July has the most rainy days, about 18.
The longest dry spell in the last five years lasted 34 days, to February 2, 2023.
From October 2025 to September 2026 Mengzi got 577 mm of rain, against a normal of 833 mm for those months. September 2026 had the most, with 304 mm.
Mengzi weather by month
Mengzi weather in January
In January, Mengzi averages a high of 19°C and a low of 9°C. It gets 26 mm of precipitation over about 5 rainy days. Estimated sunshine is 29% of daylight hours, derived from ERA5 cloud cover. The January record high is 29°C (2005) and the record low is -4°C (1974). January is one of the most comfortable months to visit.
Mengzi weather in February
In February, Mengzi averages a high of 22°C and a low of 11°C. It gets 16 mm of precipitation over about 4 rainy days. Estimated sunshine is 33% of daylight hours, derived from ERA5 cloud cover. The February record high is 31°C (2013) and the record low is -1°C (2004). February is one of the most comfortable months to visit.
Mengzi weather in March
In March, Mengzi averages a high of 25°C and a low of 14°C. It gets 24 mm of precipitation over about 5 rainy days. Estimated sunshine is 40% of daylight hours, derived from ERA5 cloud cover. The March record high is 33°C (1975) and the record low is -2°C (1986). March is one of the most comfortable months to visit.
Mengzi weather in April
In April, Mengzi averages a high of 28°C and a low of 17°C. It gets 52 mm of precipitation over about 9 rainy days. Estimated sunshine is 47% of daylight hours, derived from ERA5 cloud cover. The April record high is 36°C (1983) and the record low is 4°C (1970).
Mengzi weather in May
In May, Mengzi averages a high of 28°C and a low of 19°C. It gets 94 mm of precipitation over about 12 rainy days. Estimated sunshine is 31% of daylight hours, derived from ERA5 cloud cover. The May record high is 37°C (2023) and the record low is 10°C (1990).
Mengzi weather in June
In June, Mengzi averages a high of 28°C and a low of 21°C. It gets 112 mm of precipitation over about 15 rainy days. Estimated sunshine is 8% of daylight hours, derived from ERA5 cloud cover. The June record high is 37°C (2023) and the record low is 12°C (1970).
Mengzi weather in July
In July, Mengzi averages a high of 28°C and a low of 21°C. It gets 166 mm of precipitation over about 18 rainy days. Estimated sunshine is 14% of daylight hours, derived from ERA5 cloud cover. The July record high is 34°C (2024) and the record low is 13°C (1989).
Mengzi weather in August
In August, Mengzi averages a high of 28°C and a low of 20°C. It gets 142 mm of precipitation over about 18 rainy days. Estimated sunshine is 14% of daylight hours, derived from ERA5 cloud cover. The August record high is 34°C (2020) and the record low is 12°C (1992).
Mengzi weather in September
In September, Mengzi averages a high of 27°C and a low of 18°C. It gets 87 mm of precipitation over about 13 rainy days. Estimated sunshine is 23% of daylight hours, derived from ERA5 cloud cover. The September record high is 33°C (1992) and the record low is 8°C (1977).
Mengzi weather in October
In October, Mengzi averages a high of 24°C and a low of 16°C. It gets 57 mm of precipitation over about 9 rainy days. Estimated sunshine is 28% of daylight hours, derived from ERA5 cloud cover. The October record high is 32°C (2023) and the record low is 3°C (1978). October is one of the most comfortable months to visit.
Mengzi weather in November
In November, Mengzi averages a high of 22°C and a low of 12°C. It gets 36 mm of precipitation over about 5 rainy days. Estimated sunshine is 36% of daylight hours, derived from ERA5 cloud cover. The November record high is 29°C (2009) and the record low is 0°C (1992). November is one of the most comfortable months to visit.
Mengzi weather in December
In December, Mengzi averages a high of 19°C and a low of 9°C. It gets 21 mm of precipitation over about 4 rainy days. Estimated sunshine is 22% of daylight hours, derived from ERA5 cloud cover. The December record high is 27°C (1976) and the record low is -3°C (1975). December is one of the most comfortable months to visit.
Sunshine, humidity and wind in Mengzi
April is the sunniest month in Mengzi, with estimated sunshine of 47% of daylight hours from ERA5 cloud cover. June is the cloudiest, at 8%. The annual cloud-cover estimate is 27% of daylight hours; it is not a measurement of sunshine duration. Mengzi is cloudier than 95% of China.
Humidity peaks in December at 87% and is lowest in April at 73%.
Mengzi has about 10 days a year above 32°C. Mengzi is cooler than 70% of China.
Mengzi weather records
These records cover MENGZI during 1970–2026. Earlier records or other stations in the city may differ.
The hottest temperature on record at the Mengzi station is 37°C, on May 31, 2023. The coldest is -4°C, on January 3, 1974.
The wettest day in the available station history brought 123 mm of precipitation, on July 26, 1998.
34 all-time records have been set at the station since 1970.
The annual mean temperature has changed by +0.3°C per decade since 1970.
The best time to visit Mengzi
The most comfortable time to visit is typically January to March and October to December, when daytime highs sit near 22°C.
Winter (December–February) is mild, with average highs around 20°C and lows near 10°C.
Spring (March–May) is warm, with average highs around 27°C and lows near 17°C.
Summer (June–August) is hot, with average highs around 28°C and lows near 20°C. It can feel humid.
Autumn (September–November) is warm, with average highs around 24°C and lows near 16°C.
Monthly climate
| Month | Average low | Average high | Precip | Rain days | Humidity | Estimated sunshine | Record high | Record low |
|---|---|---|---|---|---|---|---|---|
| January | 9° | 19° | 26 mm | 5 | 85% | 29% | 29° | -4° |
| February | 11° | 22° | 16 mm | 4 | 82% | 33% | 31° | -1° |
| March | 14° | 25° | 24 mm | 5 | 79% | 40% | 33° | -2° |
| April | 17° | 28° | 52 mm | 9 | 73% | 47% | 36° | 4° |
| May | 19° | 28° | 94 mm | 12 | 78% | 31% | 37° | 10° |
| June | 21° | 28° | 112 mm | 15 | 82% | 8% | 37° | 12° |
| July | 21° | 28° | 166 mm | 18 | 84% | 14% | 34° | 13° |
| August | 20° | 28° | 142 mm | 18 | 86% | 14% | 34° | 12° |
| September | 18° | 27° | 87 mm | 13 | 82% | 23% | 33° | 8° |
| October | 16° | 24° | 57 mm | 9 | 82% | 28% | 32° | 3° |
| November | 12° | 22° | 36 mm | 5 | 83% | 36% | 29° | 0° |
| December | 9° | 19° | 21 mm | 4 | 87% | 22% | 27° | -3° |
Station: MENGZI, 2 km from the city. Temperature normal baseline: 1991–2020, calculated from available NOAA GHCN-Daily observations. Available station history: 1970–2026; 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.
Mengzi climate questions
How much rain does Mengzi get?
Mengzi gets 833 mm of precipitation in an average year, over about 117 rainy days.
What is the wettest month in Mengzi?
July is the wettest month in Mengzi, with 166 mm. February is the driest, with 16 mm.
How many rainy days does Mengzi have a year?
Mengzi has about 117 days with measurable rain in an average year. July has the most, about 18.
What is the hottest month in Mengzi?
May is the warmest month in Mengzi, with an average high of 28°C.
What is the coldest month in Mengzi?
January is the coldest month in Mengzi, with an average low of 9°C.
What is the record high temperature in Mengzi?
Within the available 1970–2026 station history, the record high at the Mengzi station is 37°C, set on May 31, 2023. The record low is -4°C, on January 3, 1974.
What is the sunniest month in Mengzi?
April is the sunniest month in Mengzi, with estimated sunshine of 47% of daylight hours from ERA5 cloud cover. June is the cloudiest.
What is the best time to visit Mengzi?
The most comfortable time to visit is typically January to March and October to December, when daytime highs sit near 22°C.