Mannheim, Germany Climate & Monthly Averages
Mannheim has an oceanic climate. July is the hottest month, averaging 80° by day; January is the coldest at 42°.
How weather changes through the year in Mannheim
Mannheim runs on a dry-summer rhythm: the warmest months are also the driest. April averages 2.1 inches (54 mm) while the wet season peaks in December at 3.2 inches (81 mm). Highs range from 42°F (6°C) to 80°F (26°C).
Mannheim climate quick facts
- Hottest month: July - highs near 80°F (26°C)
- Coldest month: January - highs near 42°F (6°C)
- Decade extremes (2015-2024): 102°F (39°C) high · 11°F (-12°C) low
- Wettest month: December (14 rainy days) · Sunniest: July (12.4 h sun/day)
- Climate type: oceanic
- Annual swing: 19°C between the average warmest and coolest month · day to night: 8°C
- Snow: about 7 days a year
- Average humidity: 74%
Temperatures, rain and sunshine
January is the coolest month, with highs of 42°F (6°C) and lows near 33°F (0°C). July is the warm end of the year, averaging 80°F (26°C) by day and 61°F (16°C) overnight. Across the gridded 2015-2024 daily record, the highest daily maximum for this location was 102°F (39°C) and the lowest daily minimum 11°F (-12°C).
Five of the twelve months pair mild highs with fewer than twelve wet days; the longest unbroken run is May through September.
December is the wettest month at 3.2 inches (81 mm) over 14 days; April is the driest. July is the brightest month at 12.4 hours of sun a day, against an annual average of 8.2 - duller than about 78% of the cities we track. Snow falls on roughly 7 days a year, mostly November through February.
Where Mannheim sits among other climates
- 29% of the year's precipitation falls in its wettest three months - more evenly spread than all but 9% of the 3496 cities we track.
These comparisons use the same ten-year window for every city in the dataset.
Monthly climate table
| Month | High | Low | Rain days | Precipitation | Sunshine | Daylight | Wet-day chance | Humidity |
|---|---|---|---|---|---|---|---|---|
| January | 42° | 33° | 15 | 3.0 in | 3.9 h/day | 8.6 h | 48% | 84% |
| February | 47° | 34° | 12 | 2.5 in | 5.9 h/day | 10.0 h | 44% | 79% |
| March | 53° | 37° | 13 | 2.5 in | 7.9 h/day | 11.7 h | 41% | 74% |
| April | 60° | 42° | 10 | 2.1 in | 10.2 h/day | 13.7 h | 35% | 69% |
| May | 67° | 50° | 11 | 3.1 in | 11.2 h/day | 15.3 h | 37% | 69% |
| June | 77° | 59° | 10 | 2.7 in | 11.9 h/day | 16.3 h | 34% | 66% |
| July | 80° | 61° | 11 | 2.2 in | 12.4 h/day | 15.9 h | 34% | 62% |
| August | 80° | 62° | 11 | 2.3 in | 11.1 h/day | 14.4 h | 35% | 66% |
| September | 71° | 54° | 9 | 2.4 in | 9.6 h/day | 12.5 h | 31% | 71% |
| October | 61° | 48° | 12 | 3.0 in | 6.5 h/day | 10.7 h | 40% | 81% |
| November | 49° | 39° | 14 | 2.9 in | 4.6 h/day | 9.0 h | 46% | 86% |
| December | 44° | 36° | 14 | 3.2 in | 3.4 h/day | 8.2 h | 45% | 87% |
Mannheim month by month
Each card shows the average high and low. The bar places that month between Mannheim's coldest night and warmest afternoon.
January
- Rain
- 15 days
- Sunshine
- 3.9 h
- Daylight
- 8.6 h
- Snow
- 3 days
February
- Rain
- 12 days
- Sunshine
- 5.9 h
- Daylight
- 10.0 h
- Snow
- 1 day
March
- Rain
- 13 days
- Sunshine
- 7.9 h
- Daylight
- 11.7 h
April
- Rain
- 10 days
- Sunshine
- 10.2 h
- Daylight
- 13.7 h
May
- Rain
- 11 days
- Sunshine
- 11.2 h
- Daylight
- 15.3 h
June
- Rain
- 10 days
- Sunshine
- 11.9 h
- Daylight
- 16.3 h
July
- Rain
- 11 days
- Sunshine
- 12.4 h
- Daylight
- 15.9 h
August
- Rain
- 11 days
- Sunshine
- 11.1 h
- Daylight
- 14.4 h
September
- Rain
- 9 days
- Sunshine
- 9.6 h
- Daylight
- 12.5 h
October
- Rain
- 12 days
- Sunshine
- 6.5 h
- Daylight
- 10.7 h
November
- Rain
- 14 days
- Sunshine
- 4.6 h
- Daylight
- 9.0 h
December
- Rain
- 14 days
- Sunshine
- 3.4 h
- Daylight
- 8.2 h
- Snow
- 1 day
Looking for warmer alternatives? Browse warm places by month, or compare Mannheim's coolest part of the year: January, December, February.
A season-by-season guide to Mannheim
Spring (March through May)
Through spring, Mannheim runs cool rather than cold: 60°F (16°C) by day, 43°F (6°C) after dark, and rain falls on around 34 of the 90 days.
Summer (June through August)
Summer settles into easy warmth here - highs near 79°F (26°C), nights near 61°F (16°C), and rain falls on around 32 of the 90 days. Daylight is generous - around 11.8 hours of sun a day.
Fall (September through November)
Fall is mild here - highs near 60°F (16°C), nights near 47°F (8°C), and rain falls on around 35 of the 90 days.
Winter (December through February)
Winter is brisk and cold here - highs near 44°F (7°C), nights near 34°F (1°C), and rain falls on around 41 of the 90 days, plus about 5 snowy days.
Questions people ask about Mannheim's climate
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The most useful weather window for Mannheim
Best time to visit Mannheim
Aim for April to September if you get the choice: the dry season is running but the afternoons are still bearable, and highs average 72°F (22°C) against roughly 10 wet days a month. For the same question asked the other way round, see where else is warm in April.
What to pack
Pack for Mannheim with a warm jacket and layers for the cooler season and proper waterproofs rather than an umbrella - wet days are the norm here. July nights average 61°F (16°C), so evenings rarely match the afternoons.
Mannheim temperature extremes in the 2015–2024 dataset
Derived from ERA5 reanalysis data, 2015–2024. Official station records may differ. Need another precipitation unit? Use the rainfall converter.