| Month | High | Low | Rain | Wet days | Score |
|---|---|---|---|---|---|
| January | 4.5° | 0.6° | 64.4mm | 16.3 | 18 |
| February | 5.7° | 1.1° | 53.9mm | 14.1 | 25 |
| March | 8.4° | 2.6° | 48.9mm | 13.4 | 36 |
| April | 13.1° | 5.8° | 40.5mm | 11.1 | 56 |
| May | 17° | 9.6° | 51.7mm | 12.8 | 65 |
| June | 20° | 12.9° | 74.4mm | 13.4 | 73 |
| July | 22° | 15° | 82.5mm | 14.9 | 70 |
| August | 22.3° | 15.2° | 79mm | 14.3 | 71 |
| September | 18.9° | 12.2° | 74.9mm | 13.3 | 70 |
| October | 14.1° | 8.5° | 69.8mm | 15.2 | 51 |
| November | 8.7° | 4.5° | 64.2mm | 16 | 34 |
| December | 5.4° | 1.5° | 72mm | 17.6 | 23 |
January in Bremerhaven averages a daily high of 4.5°C with nights around 0.6°C. Expect roughly 16.3 wet days totalling 64.4mm. A hard month to visit for comfort alone.
February in Bremerhaven averages a daily high of 5.7°C with nights around 1.1°C. Expect roughly 14.1 wet days totalling 53.9mm. A hard month to visit for comfort alone.
March in Bremerhaven averages a daily high of 8.4°C with nights around 2.6°C. Expect roughly 13.4 wet days totalling 48.9mm. Demanding conditions — pack for it and plan indoor options.
April in Bremerhaven averages a daily high of 13.1°C with nights around 5.8°C. Expect roughly 11.1 wet days totalling 40.5mm. Generally workable, with some weather to plan around.
May in Bremerhaven averages a daily high of 17°C with nights around 9.6°C. Expect roughly 12.8 wet days totalling 51.7mm. Generally workable, with some weather to plan around.
June in Bremerhaven averages a daily high of 20°C with nights around 12.9°C. Expect roughly 13.4 wet days totalling 74.4mm. Generally workable, with some weather to plan around.
July in Bremerhaven averages a daily high of 22°C with nights around 15°C. Expect roughly 14.9 wet days totalling 82.5mm. Generally workable, with some weather to plan around.
August in Bremerhaven averages a daily high of 22.3°C with nights around 15.2°C. Expect roughly 14.3 wet days totalling 79mm. Generally workable, with some weather to plan around.
September in Bremerhaven averages a daily high of 18.9°C with nights around 12.2°C. Expect roughly 13.3 wet days totalling 74.9mm. Generally workable, with some weather to plan around.
October in Bremerhaven averages a daily high of 14.1°C with nights around 8.5°C. Expect roughly 15.2 wet days totalling 69.8mm. Demanding conditions — pack for it and plan indoor options.
November in Bremerhaven averages a daily high of 8.7°C with nights around 4.5°C. Expect roughly 16 wet days totalling 64.2mm. A hard month to visit for comfort alone.
December in Bremerhaven averages a daily high of 5.4°C with nights around 1.5°C. Expect roughly 17.6 wet days totalling 72mm. A hard month to visit for comfort alone.
Each month scores out of 100. It starts at 100 and loses points for daytime highs outside a 20–27°C band, for wet days, and for nights below 2°C. Nothing else is weighted in — no crowd data, no prices, no opinion. Bremerhaven peaks at 73.
Based on 30 years of records, May–September scores highest for comfort in Bremerhaven, balancing daytime temperature against rainfall.
August is the warmest, averaging a daily high of 22.3°C.
July is the wettest, averaging 82.5mm of rain across roughly 14.9 wet days.
January is the coolest month, with average daily highs around 4.5°C.