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Gejiu, 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 Gejiu, Yunnan?
Gejiu, 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
Gejiu, 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 Gejiu get?
Gejiu 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 Gejiu got 577 mm of rain, against a normal of 833 mm for those months. September 2026 had the most, with 304 mm.
Gejiu weather by month
Gejiu weather in January
In January, Gejiu 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 38% 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.
Gejiu weather in February
In February, Gejiu 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 41% 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.
Gejiu weather in March
In March, Gejiu 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 50% 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.
Gejiu weather in April
In April, Gejiu 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 52% of daylight hours, derived from ERA5 cloud cover. The April record high is 36°C (1983) and the record low is 4°C (1970).
Gejiu weather in May
In May, Gejiu 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 36% of daylight hours, derived from ERA5 cloud cover. The May record high is 37°C (2023) and the record low is 10°C (1990).
Gejiu weather in June
In June, Gejiu 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 10% of daylight hours, derived from ERA5 cloud cover. The June record high is 37°C (2023) and the record low is 12°C (1970).
Gejiu weather in July
In July, Gejiu 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 16% of daylight hours, derived from ERA5 cloud cover. The July record high is 34°C (2024) and the record low is 13°C (1989).
Gejiu weather in August
In August, Gejiu 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).
Gejiu weather in September
In September, Gejiu 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 24% of daylight hours, derived from ERA5 cloud cover. The September record high is 33°C (1992) and the record low is 8°C (1977).
Gejiu weather in October
In October, Gejiu 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 32% 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.
Gejiu weather in November
In November, Gejiu 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 42% 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.
Gejiu weather in December
In December, Gejiu 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 27% 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 Gejiu
April is the sunniest month in Gejiu, with estimated sunshine of 52% of daylight hours from ERA5 cloud cover. June is the cloudiest, at 10%. The annual cloud-cover estimate is 32% of daylight hours; it is not a measurement of sunshine duration. Gejiu is cloudier than 88% of China.
Humidity peaks in August at 84% and is lowest in April at 64%.
Gejiu has about 10 days a year above 32°C. Gejiu is cooler than 70% of China.
Gejiu 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 Gejiu 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 Gejiu
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 | 79% | 38% | 29° | -4° |
| February | 11° | 22° | 16 mm | 4 | 74% | 41% | 31° | -1° |
| March | 14° | 25° | 24 mm | 5 | 69% | 50% | 33° | -2° |
| April | 17° | 28° | 52 mm | 9 | 64% | 52% | 36° | 4° |
| May | 19° | 28° | 94 mm | 12 | 70% | 36% | 37° | 10° |
| June | 21° | 28° | 112 mm | 15 | 78% | 10% | 37° | 12° |
| July | 21° | 28° | 166 mm | 18 | 81% | 16% | 34° | 13° |
| August | 20° | 28° | 142 mm | 18 | 84% | 14% | 34° | 12° |
| September | 18° | 27° | 87 mm | 13 | 80% | 24% | 33° | 8° |
| October | 16° | 24° | 57 mm | 9 | 79% | 32% | 32° | 3° |
| November | 12° | 22° | 36 mm | 5 | 77% | 42% | 29° | 0° |
| December | 9° | 19° | 21 mm | 4 | 82% | 27% | 27° | -3° |
Station: MENGZI, 24 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.
Gejiu climate questions
How much rain does Gejiu get?
Gejiu gets 833 mm of precipitation in an average year, over about 117 rainy days.
What is the wettest month in Gejiu?
July is the wettest month in Gejiu, with 166 mm. February is the driest, with 16 mm.
How many rainy days does Gejiu have a year?
Gejiu has about 117 days with measurable rain in an average year. July has the most, about 18.
What is the hottest month in Gejiu?
May is the warmest month in Gejiu, with an average high of 28°C.
What is the coldest month in Gejiu?
January is the coldest month in Gejiu, with an average low of 9°C.
What is the record high temperature in Gejiu?
Within the available 1970–2026 station history, the record high at the Gejiu 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 Gejiu?
April is the sunniest month in Gejiu, with estimated sunshine of 52% of daylight hours from ERA5 cloud cover. June is the cloudiest.
What is the best time to visit Gejiu?
The most comfortable time to visit is typically January to March and October to December, when daytime highs sit near 22°C.