Bremen records about 694mm of rain across roughly 122 wet days a year, which is a 33% chance on an average day. July is the wettest month at 72mm (10% of the annual total) and February the driest at 36mm. Local rain type: drizzle. Bremen gets North Sea-influenced drizzle. The covered Schnoor quarter and underground Ratskeller provide atmospheric shelter.
Chance of rain on an average day: 33%
Rainfall climatology for Bremen. The live hour-by-hour answer for today loads at the top of this page from Open-Meteo and refreshes through the day — the figures below describe a typical year, not today.
Last updated: · Live forecast data refreshes hourly.
| Annual rainfall | 694mm |
| Rain days per year | 122 |
| Odds on an average day | 33% |
| Wettest month | July — 72mm over 14 days |
| Driest month | February — 36mm over 7 days |
| Rain type | drizzle |
| Best dry window | May and June offer the driest conditions. |
| Worst rain window | July and August bring the most rainfall. |
July delivers 100% more rain than February (72mm vs 36mm). That gap is the difference between planning around showers and ignoring them.
No single month holds more than 10% of the annual total, so rain in Bremen is spread through the year — there is no season you can rely on being dry.
Bremen rain is mostly persistent drizzle, where a waterproof shell beats an umbrella.
Rain falls on about 14 days in July against 7 in February — the frequency swing matters more for planning than the millimetre totals.
Climate normals. Use them to judge whether today's live forecast at the top of the page is typical or unusual for the season.
| Month | Rainfall | Rain days | Chance on a given day | Highs |
|---|---|---|---|---|
| January | 52mm | 10 | 33% | 4°C |
| February | 36mm | 7 | 23% | 4°C |
| March | 42mm | 8 | 27% | 7°C |
| April | 38mm | 7 | 23% | 11°C |
| May | 48mm | 9 | 30% | 15°C |
| June | 62mm | 12 | 40% | 19°C |
| July | 72mm | 14 | 47% | 22°C |
| August | 68mm | 13 | 43% | 22°C |
| September | 52mm | 10 | 33% | 19°C |
| October | 56mm | 11 | 37% | 15°C |
| November | 58mm | 11 | 37% | 11°C |
| December | 52mm | 10 | 33% | 7°C |
Rain probability is the chance that at least 0.2mm falls at your location — not how long it rains. For Bremen we combine the hourly probability curve, expected volume in millimetres, and the city's own rainfall record into a single umbrella verdict.
| Factor | Weight | What it measures |
|---|---|---|
| Hourly probability | 40% | Peak and sustained chance of measurable rain across the next 24 hours. |
| Expected volume | 30% | Total millimetres, which separates a passing shower from a genuine soaking. |
| Timing & duration | 20% | When rain starts, when it eases, and the longest continuous dry window. |
| Local rain type | 10% | Drizzle, brief showers, thunderstorms or monsoon — each needs different gear. |
Live hourly values come from Open-Meteo and refresh through the day. Monthly rainfall figures are climate normals, so they describe a typical year rather than a forecast.
Bremen records rain on roughly 122 days a year — about a 33% chance on any given day — totalling around 694mm.
July, with about 72mm over 14 rain days. That is 10% of the entire year's rainfall in a single month.
February is the driest month at 36mm across roughly 7 days. May and June offer the driest conditions.
Bremen gets North Sea-influenced drizzle. The covered Schnoor quarter and underground Ratskeller provide atmospheric shelter.
No. Probability is the chance that at least 0.2mm of rain falls at your location at some point in the period. Check the expected millimetres alongside it: 40% with 0.4mm is a passing shower, 40% with 12mm is a soaking.