Hannover, Lower Saxony Weather by Month and Climate Averages

How much rain does Hannover get?

Hannover gets 626 mm of precipitation in an average year, spread over about 167 days with measurable rain. That is fewer rainy days than 53% of Germany.

July is the wettest month, with 68 mm. April is the driest, with 36 mm. December has the most rainy days, about 16.

The longest dry spell in the last five years lasted 23 days, to May 6, 2022.

Hannover weather by month

Hannover weather in January

In January, Hannover averages a high of 4°C and a low of -1°C. It gets 53 mm of precipitation over about 16 rainy days. The sun is out about 20% of daylight hours. The January record high is 17°C (2023) and the record low is -22°C (1987).

Hannover weather in February

In February, Hannover averages a high of 6°C and a low of -1°C. It gets 40 mm of precipitation over about 14 rainy days. The sun is out about 23% of daylight hours. The February record high is 19°C (2021) and the record low is -22°C (1986).

Hannover weather in March

In March, Hannover averages a high of 9°C and a low of 1°C. It gets 45 mm of precipitation over about 14 rainy days. The sun is out about 37% of daylight hours. The March record high is 24°C (1989) and the record low is -18°C (1987).

Hannover weather in April

In April, Hannover averages a high of 14°C and a low of 4°C. It gets 36 mm of precipitation over about 11 rainy days. The sun is out about 37% of daylight hours. The April record high is 28°C (1996) and the record low is -7°C (2013).

Hannover weather in May

In May, Hannover averages a high of 19°C and a low of 8°C. It gets 52 mm of precipitation over about 12 rainy days. The sun is out about 36% of daylight hours. The May record high is 32°C (2018) and the record low is -3°C (1980). May is one of the most comfortable months to visit.

Hannover weather in June

In June, Hannover averages a high of 22°C and a low of 11°C. It gets 53 mm of precipitation over about 13 rainy days. The sun is out about 38% of daylight hours. The June record high is 38°C (2026) and the record low is 1°C (1977). June is one of the most comfortable months to visit.

Hannover weather in July

In July, Hannover averages a high of 24°C and a low of 13°C. It gets 68 mm of precipitation over about 14 rainy days. The sun is out about 34% of daylight hours. The July record high is 39°C (2022) and the record low is 5°C (1978).

Hannover weather in August

In August, Hannover averages a high of 24°C and a low of 13°C. It gets 65 mm of precipitation over about 14 rainy days. The sun is out about 37% of daylight hours. The August record high is 37°C (1992) and the record low is 3°C (1980). August is one of the most comfortable months to visit.

Hannover weather in September

In September, Hannover averages a high of 19°C and a low of 10°C. It gets 52 mm of precipitation over about 12 rainy days. The sun is out about 39% of daylight hours. The September record high is 32°C (2016) and the record low is -1°C (1977). September is one of the most comfortable months to visit.

Hannover weather in October

In October, Hannover averages a high of 14°C and a low of 7°C. It gets 57 mm of precipitation over about 14 rainy days. The sun is out about 25% of daylight hours. The October record high is 27°C (2018) and the record low is -7°C (2003).

Hannover weather in November

In November, Hannover averages a high of 8°C and a low of 3°C. It gets 52 mm of precipitation over about 15 rainy days. The sun is out about 22% of daylight hours. The November record high is 21°C (2020) and the record low is -16°C (1973).

Hannover weather in December

In December, Hannover averages a high of 5°C and a low of 1°C. It gets 55 mm of precipitation over about 16 rainy days. The sun is out about 16% of daylight hours. The December record high is 17°C (2022) and the record low is -20°C (2009).

Sunshine, humidity and wind in Hannover

September is the sunniest month in Hannover, with sunshine about 39% of daylight hours. December is the cloudiest, at 16%. Over the year the sun shines about 30% of daylight hours. Hannover is cloudier than 77% of Germany.

Humidity peaks in December at 87% and is lowest in April at 66%.

Hannover has about 3 days a year above 32°C. Hannover is cooler than 66% of Germany.

First and last freeze in Hannover

The first fall freeze in Hannover typically comes around October 25, and the last spring freeze around April 23. That leaves a frost-free growing season of about 185 days.

Hannover weather records

The hottest temperature on record at the Hannover station is 39°C, on July 20, 2022. The coldest is -22°C, on January 14, 1987.

The wettest day on record brought 79 mm of rain, on August 26, 2010.

40 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 Hannover

The most comfortable time to visit is typically May to June and August to September, when daytime highs sit near 21°C.

Winter (December–February) is chilly, with average highs around 5°C and lows near 0°C.

Spring (March–May) is mild, with average highs around 14°C and lows near 4°C.

Summer (June–August) is warm, with average highs around 23°C and lows near 13°C.

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

Hannover climate questions

How much rain does Hannover get?

Hannover gets 626 mm of precipitation in an average year, over about 167 rainy days.

What is the wettest month in Hannover?

July is the wettest month in Hannover, with 68 mm. April is the driest, with 36 mm.

How many rainy days does Hannover have a year?

Hannover has about 167 days with measurable rain in an average year. December has the most, about 16.

What is the hottest month in Hannover?

July is the warmest month in Hannover, with an average high of 24°C.

What is the coldest month in Hannover?

January is the coldest month in Hannover, with an average low of -1°C.

What is the record high temperature in Hannover?

The record high at the Hannover station is 39°C, set on July 20, 2022. The record low is -22°C, on January 14, 1987.

What is the sunniest month in Hannover?

September is the sunniest month in Hannover, with sunshine about 39% of daylight hours. December is the cloudiest.

When is the first frost in Hannover?

The first fall freeze in Hannover typically comes around October 25. The last spring freeze is around April 23.

What is the best time to visit Hannover?

The most comfortable time to visit is typically May to June and August to September, when daytime highs sit near 21°C.