Guankou, Hunan Weather by Month and Climate Averages

Guankou, Hunan gets 1501 mm of precipitation a year over about 148 rainy days. July is the warmest month (average high 33°C) and January the coldest (average low 3°C).

Guankou climate at a glance

Humid subtropical climate

Guankou, Hunan 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.

How much rain does Guankou get?

Guankou gets 1501 mm of precipitation in an average year, spread over about 148 days with measurable rain. That is more rainy days than 88% of China.

June is the wettest month, with 236 mm. December is the driest, with 55 mm. March has the most rainy days, about 18.

The longest dry spell in the last five years lasted 24 days, to July 26, 2024.

Guankou weather by month

Guankou weather in January

In January, Guankou averages a high of 9°C and a low of 3°C. It gets 76 mm of precipitation over about 13 rainy days. The sun is out about 38% of daylight hours. The January record high is 27°C (2014) and the record low is -7°C (2016).

Guankou weather in February

In February, Guankou averages a high of 12°C and a low of 5°C. It gets 87 mm of precipitation over about 13 rainy days. The sun is out about 24% of daylight hours. The February record high is 31°C (2010) and the record low is -8°C (1990).

Guankou weather in March

In March, Guankou averages a high of 16°C and a low of 9°C. It gets 156 mm of precipitation over about 18 rainy days. The sun is out about 27% of daylight hours. The March record high is 33°C (2025) and the record low is -1°C (2003).

Guankou weather in April

In April, Guankou averages a high of 22°C and a low of 14°C. It gets 178 mm of precipitation over about 16 rainy days. The sun is out about 26% of daylight hours. The April record high is 36°C (2004) and the record low is 2°C (1996). April is one of the most comfortable months to visit.

Guankou weather in May

In May, Guankou averages a high of 27°C and a low of 19°C. It gets 208 mm of precipitation over about 16 rainy days. The sun is out about 24% of daylight hours. The May record high is 36°C (1991) and the record low is 11°C (1991).

Guankou weather in June

In June, Guankou averages a high of 30°C and a low of 23°C. It gets 236 mm of precipitation over about 14 rainy days. The sun is out about 14% of daylight hours. The June record high is 38°C (2004) and the record low is 13°C (1987).

Guankou weather in July

In July, Guankou averages a high of 33°C and a low of 26°C. It gets 166 mm of precipitation over about 10 rainy days. The sun is out about 25% of daylight hours. The July record high is 41°C (2024) and the record low is 19°C (1989).

Guankou weather in August

In August, Guankou averages a high of 33°C and a low of 25°C. It gets 112 mm of precipitation over about 10 rainy days. The sun is out about 41% of daylight hours. The August record high is 41°C (2003) and the record low is 17°C (2009).

Guankou weather in September

In September, Guankou averages a high of 28°C and a low of 21°C. It gets 87 mm of precipitation over about 9 rainy days. The sun is out about 47% of daylight hours. The September record high is 39°C (2024) and the record low is 12°C (1992).

Guankou weather in October

In October, Guankou averages a high of 23°C and a low of 16°C. It gets 61 mm of precipitation over about 9 rainy days. The sun is out about 43% of daylight hours. The October record high is 38°C (2022) and the record low is 5°C (1991). October is one of the most comfortable months to visit.

Guankou weather in November

In November, Guankou averages a high of 18°C and a low of 10°C. It gets 79 mm of precipitation over about 10 rainy days. The sun is out about 47% of daylight hours. The November record high is 33°C (2022) and the record low is -2°C (1987). November is one of the most comfortable months to visit.

Guankou weather in December

In December, Guankou averages a high of 12°C and a low of 4°C. It gets 55 mm of precipitation over about 10 rainy days. The sun is out about 51% of daylight hours. The December record high is 24°C (2024) and the record low is -11°C (1991).

Sunshine, humidity and wind in Guankou

December is the sunniest month in Guankou, with sunshine about 51% of daylight hours. June is the cloudiest, at 14%. Over the year the sun shines about 34% of daylight hours. Guankou is cloudier than 83% of China.

Humidity peaks in June at 81% and is lowest in December at 68%.

Guankou has about 61 days a year above 32°C. Guankou is hotter than 83% of China.

First and last freeze in Guankou

The first fall freeze in Guankou typically comes around December 16, and the last spring freeze around February 9. That leaves a frost-free growing season of about 310 days.

Guankou weather records

The hottest temperature on record at the Guankou station is 41°C, on August 2, 2003. The coldest is -11°C, on December 29, 1991.

The wettest day on record brought 249 mm of rain, on June 7, 1997.

48 all-time records have been set at the station since 1987.

The annual mean temperature has changed by +0.4°C per decade since 1987.

The best time to visit Guankou

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 11°C and lows near 4°C.

Spring (March–May) is warm, with average highs around 22°C and lows near 14°C.

Summer (June–August) is hot, with average highs around 32°C and lows near 25°C. It can feel humid.

Autumn (September–November) is warm, with average highs around 23°C and lows near 15°C.

Monthly climate

MonthPrecipRain daysHumiditySunshineRecord highRecord low
January76 mm1375%38%27°-7°
February87 mm1380%24%31°-8°
March156 mm1878%27%33°-1°
April178 mm1676%26%36°
May208 mm1677%24%36°11°
June236 mm1481%14%38°13°
July166 mm1074%25%41°19°
August112 mm1071%41%41°17°
September87 mm971%47%39°12°
October61 mm972%43%38°
November79 mm1074%47%33°-2°
December55 mm1068%51%24°-11°

From ERA5 reanalysis. Sunshine is estimated from cloud cover.

Guankou climate questions

How much rain does Guankou get?

Guankou gets 1501 mm of precipitation in an average year, over about 148 rainy days.

What is the wettest month in Guankou?

June is the wettest month in Guankou, with 236 mm. December is the driest, with 55 mm.

How many rainy days does Guankou have a year?

Guankou has about 148 days with measurable rain in an average year. March has the most, about 18.

What is the hottest month in Guankou?

July is the warmest month in Guankou, with an average high of 33°C.

What is the coldest month in Guankou?

January is the coldest month in Guankou, with an average low of 3°C.

What is the record high temperature in Guankou?

The record high at the Guankou station is 41°C, set on August 2, 2003. The record low is -11°C, on December 29, 1991.

What is the sunniest month in Guankou?

December is the sunniest month in Guankou, with sunshine about 51% of daylight hours. June is the cloudiest.

When is the first frost in Guankou?

The first fall freeze in Guankou typically comes around December 16. The last spring freeze is around February 9.

What is the best time to visit Guankou?

The most comfortable time to visit is typically April and October to November, when daytime highs sit near 21°C.

Source: NOAA GHCN-Daily station CHANGSHA (75 km away).

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Normals from NOAA GHCN-Daily station CHANGSHA.