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Mannheim, Baden-Wurttemberg Weather by Month and Climate Averages
Monthly normals · Rain · Snow
Sunshine · Freeze dates · Records · Best time to visit
What is the weather like in Mannheim, Baden-Wurttemberg?
Mannheim, Baden-Wurttemberg gets 640 mm of precipitation a year over about 154 rainy days. July is the warmest month (average high 27°C) and January the coldest (average low -1°C).
Oceanic climate
Mannheim, Baden-Wurttemberg has warm summers and chilly winters. Daytime highs range from about 5°C in January to 27°C in July. July is usually the wettest month. The most comfortable time to visit is typically April to June and August to September, when daytime highs sit near 22°C.
| Season | Months | Avg low | Avg high |
|---|---|---|---|
| Winter | Dec–Feb | 0° | 6° |
| Spring | Mar–May | 6° | 17° |
| Summer | Jun–Aug | 14° | 26° |
| Autumn | Sep–Nov | 7° | 16° |
How much rain does Mannheim get?
Mannheim gets 640 mm of precipitation in an average year, spread over about 154 days with measurable rain. That is fewer rainy days than 84% of Germany.
July is the wettest month, with 71 mm. April is the driest, with 40 mm. December has the most rainy days, about 16.
The longest dry spell in the last five years lasted 27 days, to June 18, 2023.
From October 2025 to September 2026 Mannheim got 448 mm of rain, against a normal of 640 mm for those months. June 2026 had the most, with 76 mm.
Mannheim weather by month
Mannheim weather in January
In January, Mannheim averages a high of 6°C and a low of -1°C. It gets 42 mm of precipitation over about 14 rainy days. Estimated sunshine is 22% of daylight hours, derived from ERA5 cloud cover. The January record high is 17°C (1991) and the record low is -19°C (1982).
Mannheim weather in February
In February, Mannheim averages a high of 7°C and a low of -1°C. It gets 41 mm of precipitation over about 13 rainy days. Estimated sunshine is 30% of daylight hours, derived from ERA5 cloud cover. The February record high is 20°C (1990) and the record low is -21°C (1978).
Mannheim weather in March
In March, Mannheim averages a high of 12°C and a low of 2°C. It gets 42 mm of precipitation over about 12 rainy days. Estimated sunshine is 40% of daylight hours, derived from ERA5 cloud cover. The March record high is 26°C (1989) and the record low is -13°C (2005).
Mannheim weather in April
In April, Mannheim averages a high of 17°C and a low of 5°C. It gets 40 mm of precipitation over about 11 rainy days. Estimated sunshine is 43% of daylight hours, derived from ERA5 cloud cover. The April record high is 32°C (2012) and the record low is -7°C (1986). April is one of the most comfortable months to visit.
Mannheim weather in May
In May, Mannheim averages a high of 21°C and a low of 9°C. It gets 68 mm of precipitation over about 13 rainy days. Estimated sunshine is 39% of daylight hours, derived from ERA5 cloud cover. The May record high is 33°C (2017) and the record low is -1°C (1979). May is one of the most comfortable months to visit.
Mannheim weather in June
In June, Mannheim averages a high of 24°C and a low of 13°C. It gets 64 mm of precipitation over about 12 rainy days. Estimated sunshine is 42% of daylight hours, derived from ERA5 cloud cover. The June record high is 40°C (2026) and the record low is 3°C (1975). June is one of the most comfortable months to visit.
Mannheim weather in July
In July, Mannheim averages a high of 27°C and a low of 14°C. It gets 71 mm of precipitation over about 13 rainy days. Estimated sunshine is 43% of daylight hours, derived from ERA5 cloud cover. The July record high is 39°C (2019) and the record low is 4°C (1984).
Mannheim weather in August
In August, Mannheim averages a high of 26°C and a low of 14°C. It gets 62 mm of precipitation over about 13 rainy days. Estimated sunshine is 42% of daylight hours, derived from ERA5 cloud cover. The August record high is 40°C (2015) and the record low is 4°C (1980). August is one of the most comfortable months to visit.
Mannheim weather in September
In September, Mannheim averages a high of 22°C and a low of 11°C. It gets 50 mm of precipitation over about 11 rainy days. Estimated sunshine is 45% of daylight hours, derived from ERA5 cloud cover. The September record high is 33°C (2024) and the record low is 2°C (1971). September is one of the most comfortable months to visit.
Mannheim weather in October
In October, Mannheim averages a high of 16°C and a low of 7°C. It gets 53 mm of precipitation over about 13 rainy days. Estimated sunshine is 27% of daylight hours, derived from ERA5 cloud cover. The October record high is 28°C (1985) and the record low is -6°C (2012).
Mannheim weather in November
In November, Mannheim averages a high of 9°C and a low of 3°C. It gets 53 mm of precipitation over about 14 rainy days. Estimated sunshine is 25% of daylight hours, derived from ERA5 cloud cover. The November record high is 22°C (2020) and the record low is -9°C (1989).
Mannheim weather in December
In December, Mannheim averages a high of 6°C and a low of 1°C. It gets 55 mm of precipitation over about 16 rainy days. Estimated sunshine is 18% of daylight hours, derived from ERA5 cloud cover. The December record high is 18°C (2022) and the record low is -18°C (2010).
Sunshine, humidity and wind in Mannheim
September is the sunniest month in Mannheim, with estimated sunshine of 45% of daylight hours from ERA5 cloud cover. December is the cloudiest, at 18%. The annual cloud-cover estimate is 35% of daylight hours; it is not a measurement of sunshine duration. Mannheim is sunnier than 88% of Germany.
Humidity peaks in December at 87% and is lowest in July at 57%.
Mannheim has about 8 days a year above 32°C. Mannheim is hotter than 97% of Germany.
First and last freeze in Mannheim
The first fall freeze in Mannheim typically comes around November 2, and the last spring freeze around April 15. That leaves a frost-free growing season of about 201 days.
Mannheim weather records
These records cover COLEMAN during 1970–2026. Earlier records or other stations in the city may differ.
The hottest temperature on record at the Mannheim station is 40°C, on June 27, 2026. The coldest is -21°C, on February 18, 1978.
The wettest day in the available station history brought 103 mm of precipitation, on July 21, 1972.
50 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 Mannheim
The most comfortable time to visit is typically April to June and August to September, when daytime highs sit near 22°C.
Winter (December–February) is chilly, with average highs around 6°C and lows near 0°C.
Spring (March–May) is mild, with average highs around 17°C and lows near 6°C.
Summer (June–August) is warm, with average highs around 26°C and lows near 14°C.
Autumn (September–November) is mild, with average highs around 16°C and lows near 7°C.
Monthly climate
| Month | Average low | Average high | Precip | Rain days | Humidity | Estimated sunshine | Record high | Record low |
|---|---|---|---|---|---|---|---|---|
| January | -1° | 6° | 42 mm | 14 | 84% | 22% | 17° | -19° |
| February | -1° | 7° | 41 mm | 13 | 77% | 30% | 20° | -21° |
| March | 2° | 12° | 42 mm | 12 | 67% | 40% | 26° | -13° |
| April | 5° | 17° | 40 mm | 11 | 62% | 43% | 32° | -7° |
| May | 9° | 21° | 68 mm | 13 | 65% | 39% | 33° | -1° |
| June | 13° | 24° | 64 mm | 12 | 60% | 42% | 40° | 3° |
| July | 14° | 27° | 71 mm | 13 | 57% | 43% | 39° | 4° |
| August | 14° | 26° | 62 mm | 13 | 63% | 42% | 40° | 4° |
| September | 11° | 22° | 50 mm | 11 | 70% | 45% | 33° | 2° |
| October | 7° | 16° | 53 mm | 13 | 82% | 27% | 28° | -6° |
| November | 3° | 9° | 53 mm | 14 | 86% | 25% | 22° | -9° |
| December | 1° | 6° | 55 mm | 16 | 87% | 18% | 18° | -18° |
Station: COLEMAN, 9 km from the city. Temperature normal baseline: 1991–2020, calculated from available NOAA GHCN-Daily observations. Available station history: 1970–2026; record values refer to this station and period, not the entire city’s history. Precipitation includes rain and the water equivalent of frozen precipitation; snowfall depth is shown separately when available. Sources and methods
From ERA5 reanalysis. Sunshine is estimated from cloud cover.
Mannheim climate questions
How much rain does Mannheim get?
Mannheim gets 640 mm of precipitation in an average year, over about 154 rainy days.
What is the wettest month in Mannheim?
July is the wettest month in Mannheim, with 71 mm. April is the driest, with 40 mm.
How many rainy days does Mannheim have a year?
Mannheim has about 154 days with measurable rain in an average year. December has the most, about 16.
What is the hottest month in Mannheim?
July is the warmest month in Mannheim, with an average high of 27°C.
What is the coldest month in Mannheim?
January is the coldest month in Mannheim, with an average low of -1°C.
What is the record high temperature in Mannheim?
Within the available 1970–2026 station history, the record high at the Mannheim station is 40°C, set on June 27, 2026. The record low is -21°C, on February 18, 1978.
What is the sunniest month in Mannheim?
September is the sunniest month in Mannheim, with estimated sunshine of 45% of daylight hours from ERA5 cloud cover. December is the cloudiest.
When is the first frost in Mannheim?
The first fall freeze in Mannheim typically comes around November 2. The last spring freeze is around April 15.
What is the best time to visit Mannheim?
The most comfortable time to visit is typically April to June and August to September, when daytime highs sit near 22°C.