Siegen, North Rhine-Westphalia Weather by Month and Climate Averages

How much rain does Siegen get?

Siegen gets 802 mm of precipitation in an average year, spread over about 177 days with measurable rain. That is more rainy days than 75% of Germany.

December is the wettest month, with 87 mm. April is the driest, with 45 mm. December has the most rainy days, about 19.

The longest dry spell in the last five years lasted 15 days, to March 12, 2022.

Siegen weather by month

Siegen weather in January

In January, Siegen averages a high of 4°C and a low of -2°C. It gets 77 mm of precipitation over about 17 rainy days. The sun is out about 15% of daylight hours. The January record high is 15°C (1999) and the record low is -23°C (1976).

Siegen weather in February

In February, Siegen averages a high of 6°C and a low of -2°C. It gets 60 mm of precipitation over about 15 rainy days. The sun is out about 23% of daylight hours. The February record high is 20°C (2019) and the record low is -22°C (1985).

Siegen weather in March

In March, Siegen averages a high of 10°C and a low of 0°C. It gets 59 mm of precipitation over about 15 rainy days. The sun is out about 36% of daylight hours. The March record high is 26°C (2021) and the record low is -16°C (1987).

Siegen weather in April

In April, Siegen averages a high of 15°C and a low of 2°C. It gets 45 mm of precipitation over about 13 rainy days. The sun is out about 38% of daylight hours. The April record high is 29°C (2012) and the record low is -11°C (1986).

Siegen weather in May

In May, Siegen averages a high of 19°C and a low of 7°C. It gets 62 mm of precipitation over about 13 rainy days. The sun is out about 36% of daylight hours. The May record high is 32°C (2005) and the record low is -4°C (1979). May is one of the most comfortable months to visit.

Siegen weather in June

In June, Siegen averages a high of 22°C and a low of 9°C. It gets 61 mm of precipitation over about 13 rainy days. The sun is out about 40% of daylight hours. The June record high is 39°C (2019) and the record low is -2°C (1975). June is one of the most comfortable months to visit.

Siegen weather in July

In July, Siegen averages a high of 25°C and a low of 12°C. It gets 78 mm of precipitation over about 15 rainy days. The sun is out about 35% of daylight hours. The July record high is 38°C (2015) and the record low is 1°C (1984). July is one of the most comfortable months to visit.

Siegen weather in August

In August, Siegen averages a high of 24°C and a low of 11°C. It gets 71 mm of precipitation over about 13 rainy days. The sun is out about 38% of daylight hours. The August record high is 38°C (2003) and the record low is 1°C (1978). August is one of the most comfortable months to visit.

Siegen weather in September

In September, Siegen averages a high of 19°C and a low of 8°C. It gets 65 mm of precipitation over about 13 rainy days. The sun is out about 39% of daylight hours. The September record high is 34°C (2020) and the record low is -2°C (1971). September is one of the most comfortable months to visit.

Siegen weather in October

In October, Siegen averages a high of 14°C and a low of 5°C. It gets 68 mm of precipitation over about 15 rainy days. The sun is out about 21% of daylight hours. The October record high is 26°C (2011) and the record low is -8°C (1997).

Siegen weather in November

In November, Siegen averages a high of 8°C and a low of 2°C. It gets 69 mm of precipitation over about 17 rainy days. The sun is out about 18% of daylight hours. The November record high is 21°C (2020) and the record low is -16°C (1988).

Siegen weather in December

In December, Siegen averages a high of 4°C and a low of -1°C. It gets 87 mm of precipitation over about 19 rainy days. The sun is out about 12% of daylight hours. The December record high is 16°C (2022) and the record low is -19°C (1973).

Sunshine, humidity and wind in Siegen

June is the sunniest month in Siegen, with sunshine about 40% of daylight hours. December is the cloudiest, at 12%. Over the year the sun shines about 29% of daylight hours. Siegen is cloudier than 96% of Germany.

Humidity peaks in December at 91% and is lowest in April at 66%.

Siegen has about 4 days a year above 32°C. Siegen is hotter than 62% of Germany.

First and last freeze in Siegen

The first fall freeze in Siegen typically comes around October 13, and the last spring freeze around May 6. That leaves a frost-free growing season of about 160 days.

Siegen weather records

The hottest temperature on record at the Siegen station is 39°C, on June 30, 2019. The coldest is -23°C, on January 29, 1976.

The wettest day on record brought 103 mm of rain, on September 17, 2006.

48 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 Siegen

The most comfortable time to visit is typically May to September, when daytime highs sit near 22°C.

Winter (December–February) is cold, with average highs around 4°C and lows near -2°C.

Spring (March–May) is mild, with average highs around 15°C and lows near 3°C.

Summer (June–August) is warm, with average highs around 24°C and lows near 11°C. It can feel humid.

Autumn (September–November) is mild, with average highs around 14°C and lows near 5°C.

Siegen climate questions

How much rain does Siegen get?

Siegen gets 802 mm of precipitation in an average year, over about 177 rainy days.

What is the wettest month in Siegen?

December is the wettest month in Siegen, with 87 mm. April is the driest, with 45 mm.

How many rainy days does Siegen have a year?

Siegen has about 177 days with measurable rain in an average year. December has the most, about 19.

What is the hottest month in Siegen?

July is the warmest month in Siegen, with an average high of 25°C.

What is the coldest month in Siegen?

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

What is the record high temperature in Siegen?

The record high at the Siegen station is 39°C, set on June 30, 2019. The record low is -23°C, on January 29, 1976.

What is the sunniest month in Siegen?

June is the sunniest month in Siegen, with sunshine about 40% of daylight hours. December is the cloudiest.

When is the first frost in Siegen?

The first fall freeze in Siegen typically comes around October 13. The last spring freeze is around May 6.

What is the best time to visit Siegen?

The most comfortable time to visit is typically May to September, when daytime highs sit near 22°C.