Bolton, England Weather by Month and Climate Averages

How much rain does Bolton get?

Bolton gets 1060 mm of precipitation in an average year, spread over about 208 days with measurable rain. That is more rainy days than 60% of the UK.

December is the wettest month, with 121 mm. April is the driest, with 55 mm. November has the most rainy days, about 22.

The longest dry spell in the last five years lasted 31 days, to May 22, 2025.

Bolton weather by month

Bolton weather in January

In January, Bolton averages a high of 8°C and a low of 2°C. It gets 90 mm of precipitation over about 20 rainy days. The sun is out about 27% of daylight hours. The January record high is 14°C (2020) and the record low is -11°C (1970).

Bolton weather in February

In February, Bolton averages a high of 8°C and a low of 2°C. It gets 83 mm of precipitation over about 17 rainy days. The sun is out about 22% of daylight hours. The February record high is 17°C (2008) and the record low is -8°C (1978).

Bolton weather in March

In March, Bolton averages a high of 11°C and a low of 3°C. It gets 67 mm of precipitation over about 16 rainy days. The sun is out about 29% of daylight hours. The March record high is 22°C (2012) and the record low is -7°C (1986).

Bolton weather in April

In April, Bolton averages a high of 13°C and a low of 5°C. It gets 55 mm of precipitation over about 14 rainy days. The sun is out about 35% of daylight hours. The April record high is 25°C (2025) and the record low is -4°C (2021).

Bolton weather in May

In May, Bolton averages a high of 16°C and a low of 8°C. It gets 63 mm of precipitation over about 14 rainy days. The sun is out about 31% of daylight hours. The May record high is 31°C (2026) and the record low is -2°C (1996).

Bolton weather in June

In June, Bolton averages a high of 19°C and a low of 11°C. It gets 76 mm of precipitation over about 16 rainy days. The sun is out about 33% of daylight hours. The June record high is 33°C (2026) and the record low is 1°C (1991). June is one of the most comfortable months to visit.

Bolton weather in July

In July, Bolton averages a high of 20°C and a low of 12°C. It gets 84 mm of precipitation over about 16 rainy days. The sun is out about 25% of daylight hours. The July record high is 37°C (2022) and the record low is 4°C (1971). July is one of the most comfortable months to visit.

Bolton weather in August

In August, Bolton averages a high of 20°C and a low of 12°C. It gets 99 mm of precipitation over about 18 rainy days. The sun is out about 30% of daylight hours. The August record high is 33°C (1990) and the record low is 3°C (1977). August is one of the most comfortable months to visit.

Bolton weather in September

In September, Bolton averages a high of 18°C and a low of 10°C. It gets 102 mm of precipitation over about 17 rainy days. The sun is out about 28% of daylight hours. The September record high is 28°C (2021) and the record low is -1°C (1974). September is one of the most comfortable months to visit.

Bolton weather in October

In October, Bolton averages a high of 14°C and a low of 7°C. It gets 112 mm of precipitation over about 19 rainy days. The sun is out about 22% of daylight hours. The October record high is 23°C (1995) and the record low is -5°C (1993).

Bolton weather in November

In November, Bolton averages a high of 11°C and a low of 4°C. It gets 107 mm of precipitation over about 22 rainy days. The sun is out about 23% of daylight hours. The November record high is 18°C (2005) and the record low is -9°C (2010).

Bolton weather in December

In December, Bolton averages a high of 8°C and a low of 2°C. It gets 121 mm of precipitation over about 21 rainy days. The sun is out about 20% of daylight hours. The December record high is 16°C (2016) and the record low is -13°C (1981).

Sunshine, humidity and wind in Bolton

April is the sunniest month in Bolton, with sunshine about 35% of daylight hours. December is the cloudiest, at 20%. Over the year the sun shines about 27% of daylight hours. Bolton is cloudier than 67% of the UK.

Humidity peaks in December at 88% and is lowest in April at 71%.

First and last freeze in Bolton

The first fall freeze in Bolton typically comes around November 4, and the last spring freeze around April 20. That leaves a frost-free growing season of about 198 days.

Bolton weather records

The hottest temperature on record at the Bolton station is 37°C, on July 18, 2022. The coldest is -13°C, on December 18, 1981.

The wettest day on record brought 72 mm of rain, on August 10, 2011.

39 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 Bolton

The most comfortable time to visit is typically June to September, when daytime highs sit near 19°C.

Winter (December–February) is chilly, with average highs around 8°C and lows near 2°C.

Spring (March–May) is mild, with average highs around 13°C and lows near 5°C.

Summer (June–August) is mild, with average highs around 20°C and lows near 12°C. It can feel humid.

Autumn (September–November) is mild, with average highs around 14°C and lows near 7°C.

Bolton climate questions

How much rain does Bolton get?

Bolton gets 1060 mm of precipitation in an average year, over about 208 rainy days.

What is the wettest month in Bolton?

December is the wettest month in Bolton, with 121 mm. April is the driest, with 55 mm.

How many rainy days does Bolton have a year?

Bolton has about 208 days with measurable rain in an average year. November has the most, about 22.

What is the hottest month in Bolton?

July is the warmest month in Bolton, with an average high of 20°C.

What is the coldest month in Bolton?

January is the coldest month in Bolton, with an average low of 2°C.

What is the record high temperature in Bolton?

The record high at the Bolton station is 37°C, set on July 18, 2022. The record low is -13°C, on December 18, 1981.

What is the sunniest month in Bolton?

April is the sunniest month in Bolton, with sunshine about 35% of daylight hours. December is the cloudiest.

When is the first frost in Bolton?

The first fall freeze in Bolton typically comes around November 4. The last spring freeze is around April 20.

What is the best time to visit Bolton?

The most comfortable time to visit is typically June to September, when daytime highs sit near 19°C.