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Bremen has a temperate oceanic climate (Cfb) with mild winters and cool summers, influenced by its location in northwestern Germany about 60 km from the North Sea. The city receives roughly 700 mm of rainfall annually, spread evenly across all months. Winters rarely see sustained snow cover but do bring frequent overcast days and drizzle.
Bremen Weather by Month: January and February
January is Bremen’s coldest month, averaging 0.8°C (33.4°F) with overnight lows around -2°C (28°F). February warms slightly to 1.5°C (34.7°F). Both months get about 50 mm of rainfall over 17-18 days. Snow occurs 5-7 days per month but rarely accumulates beyond a few centimeters. Daylight is limited to 7.5-9.5 hours.
Bremen Weather by Month: March and April
March temperatures climb to 4.3°C (39.7°F) and April reaches 7.9°C (46.2°F). These are Bremen’s driest months, with 42-45 mm of rainfall. April brings the first genuinely warm days (16-18°C possible) alongside chilly spells. Expect 10-13 rainy days per month. Cherry blossoms appear in Bürgerpark by mid-April.
Bremen Weather by Month: May and June
May (12.4°C / 54.3°F) and June (15.5°C / 59.9°F) are Bremen’s most pleasant months. Rainfall increases to 55-65 mm across 14-16 rainy days. June delivers the year’s most sunshine hours (205 on average) with daylight extending to 17 hours. Late spring is ideal for biking the Weser River paths and outdoor dining along the Schlachte promenade.
Bremen Weather by Month: July and August
July is Bremen’s warmest month, averaging 17.6°C (63.7°F) with daytime highs of 22-24°C (72-75°F). August is nearly identical at 17.3°C (63.1°F). Both months see 65-75 mm of rain over 15-16 days, often as brief afternoon showers. Humidity hovers around 72%. Heatwaves can push temperatures above 30°C (86°F) for 3-5 days per summer.
Bremen Weather by Month: September and October
September stays mild at 14°C (57.2°F), cooling to 9.7°C (49.5°F) in October. Rainfall peaks in October at 62 mm across 16 days. September offers 140 sunshine hours, ideal for visiting the Freimarkt festival in late October. Autumn foliage peaks in Bürgerpark during mid-October.
Bremen Weather by Month: November and December
November (5.2°C / 41.4°F) and December (2°C / 35.6°F) bring short days (7.5-8.5 hours of daylight) and frequent gray skies. November is the second-wettest month at 60 mm. December averages 3-4 snow days. Bremen’s Christmas market opens in late November on the historic Marktplatz, running through December 23.
Bremen Weather by Month: Quick Reference Table
| Month | Avg High (°C/°F) | Avg Low (°C/°F) | Rain (mm) | Rain Days | Sun (hrs) |
|---|---|---|---|---|---|
| Jan | 3.3 / 38 | -1.5 / 29 | 51 | 18 | 42 |
| Feb | 4.3 / 40 | -1.0 / 30 | 38 | 16 | 70 |
| Mar | 8.2 / 47 | 1.3 / 34 | 45 | 16 | 110 |
| Apr | 12.8 / 55 | 3.5 / 38 | 42 | 13 | 165 |
| May | 17.5 / 63 | 7.3 / 45 | 56 | 14 | 200 |
| Jun | 20.3 / 69 | 10.5 / 51 | 65 | 15 | 205 |
| Jul | 22.4 / 72 | 12.7 / 55 | 72 | 16 | 200 |
| Aug | 22.2 / 72 | 12.2 / 54 | 68 | 15 | 190 |
| Sep | 18.5 / 65 | 9.5 / 49 | 56 | 14 | 140 |
| Oct | 13.4 / 56 | 6.0 / 43 | 62 | 16 | 98 |
| Nov | 7.5 / 46 | 2.5 / 37 | 60 | 18 | 48 |
| Dec | 4.3 / 40 | -0.2 / 32 | 56 | 18 | 35 |
