Jena, Thuringia Weather by Month and Climate Averages

How much rain does Jena get?

Jena gets 595 mm of precipitation in an average year, spread over about 160 days with measurable rain. That is fewer rainy days than 71% of Germany.

July is the wettest month, with 85 mm. February is the driest, with 30 mm. December has the most rainy days, about 16.

The longest dry spell in the last five years lasted 20 days, to May 15, 2022.

Jena weather by month

Jena weather in January

In January, Jena averages a high of 4°C and a low of -1°C. It gets 35 mm of precipitation over about 15 rainy days. The sun is out about 21% of daylight hours. The January record high is 17°C (2023) and the record low is -23°C (1987).

Jena weather in February

In February, Jena averages a high of 6°C and a low of -1°C. It gets 30 mm of precipitation over about 13 rainy days. The sun is out about 24% of daylight hours. The February record high is 22°C (2021) and the record low is -21°C (1985).

Jena weather in March

In March, Jena averages a high of 11°C and a low of 2°C. It gets 42 mm of precipitation over about 15 rainy days. The sun is out about 37% of daylight hours. The March record high is 26°C (1989) and the record low is -21°C (1987).

Jena weather in April

In April, Jena averages a high of 16°C and a low of 4°C. It gets 37 mm of precipitation over about 11 rainy days. The sun is out about 36% of daylight hours. The April record high is 32°C (2012) and the record low is -7°C (1986).

Jena weather in May

In May, Jena averages a high of 21°C and a low of 8°C. It gets 61 mm of precipitation over about 13 rainy days. The sun is out about 37% of daylight hours. The May record high is 35°C (2005) and the record low is -1°C (1979). May is one of the most comfortable months to visit.

Jena weather in June

In June, Jena averages a high of 24°C and a low of 12°C. It gets 55 mm of precipitation over about 13 rainy days. The sun is out about 38% of daylight hours. The June record high is 39°C (2026) and the record low is 1°C (1977). June is one of the most comfortable months to visit.

Jena weather in July

In July, Jena averages a high of 26°C and a low of 14°C. It gets 85 mm of precipitation over about 14 rainy days. The sun is out about 39% of daylight hours. The July record high is 39°C (2015) and the record low is 5°C (1979).

Jena weather in August

In August, Jena averages a high of 26°C and a low of 13°C. It gets 68 mm of precipitation over about 13 rainy days. The sun is out about 38% of daylight hours. The August record high is 39°C (2015) and the record low is 4°C (1980). August is one of the most comfortable months to visit.

Jena weather in September

In September, Jena averages a high of 21°C and a low of 10°C. It gets 51 mm of precipitation over about 12 rainy days. The sun is out about 42% of daylight hours. The September record high is 34°C (2024) and the record low is 1°C (2008). September is one of the most comfortable months to visit.

Jena weather in October

In October, Jena averages a high of 15°C and a low of 6°C. It gets 41 mm of precipitation over about 13 rainy days. The sun is out about 27% of daylight hours. The October record high is 29°C (1985) and the record low is -6°C (1997).

Jena weather in November

In November, Jena averages a high of 9°C and a low of 3°C. It gets 47 mm of precipitation over about 14 rainy days. The sun is out about 24% of daylight hours. The November record high is 21°C (2020) and the record low is -12°C (1993).

Jena weather in December

In December, Jena averages a high of 6°C and a low of 0°C. It gets 43 mm of precipitation over about 16 rainy days. The sun is out about 18% of daylight hours. The December record high is 18°C (2022) and the record low is -21°C (1996).

Sunshine, humidity and wind in Jena

September is the sunniest month in Jena, with sunshine about 42% of daylight hours. December is the cloudiest, at 18%. Over the year the sun shines about 32% of daylight hours. Jena is cloudier than 52% of Germany.

Humidity peaks in December at 85% and is lowest in July at 59%.

Jena has about 7 days a year above 32°C. Jena is hotter than 93% of Germany.

First and last freeze in Jena

The first fall freeze in Jena typically comes around October 25, and the last spring freeze around April 18. That leaves a frost-free growing season of about 190 days.

Jena weather records

The hottest temperature on record at the Jena station is 39°C, on June 27, 2026. The coldest is -23°C, on January 14, 1987.

The wettest day on record brought 110 mm of rain, on July 18, 1997.

45 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 Jena

The most comfortable time to visit is typically May to June and August to September, when daytime highs sit near 23°C.

Winter (December–February) is chilly, with average highs around 5°C and lows near -1°C.

Spring (March–May) is mild, with average highs around 16°C and lows near 5°C.

Summer (June–August) is warm, with average highs around 25°C and lows near 13°C.

Autumn (September–November) is mild, with average highs around 15°C and lows near 6°C.

Jena climate questions

How much rain does Jena get?

Jena gets 595 mm of precipitation in an average year, over about 160 rainy days.

What is the wettest month in Jena?

July is the wettest month in Jena, with 85 mm. February is the driest, with 30 mm.

How many rainy days does Jena have a year?

Jena has about 160 days with measurable rain in an average year. December has the most, about 16.

What is the hottest month in Jena?

July is the warmest month in Jena, with an average high of 26°C.

What is the coldest month in Jena?

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

What is the record high temperature in Jena?

The record high at the Jena station is 39°C, set on June 27, 2026. The record low is -23°C, on January 14, 1987.

What is the sunniest month in Jena?

September is the sunniest month in Jena, with sunshine about 42% of daylight hours. December is the cloudiest.

When is the first frost in Jena?

The first fall freeze in Jena typically comes around October 25. The last spring freeze is around April 18.

What is the best time to visit Jena?

The most comfortable time to visit is typically May to June and August to September, when daytime highs sit near 23°C.