Climate averages 1991–2020
Hamburg weather
in September.
A mild, moderately wet month: the 4th warmest and the joint 5th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
September is a mild month in Hamburg: daytime highs average 18.3°C and nights cool to about 11.1°C. By daytime temperature it is the 4th warmest of the 12 months.
Expect about 56 mm of rain on roughly 10 days, which makes September a moderately wet month (the joint 5th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 45 min on an average September day.
The nearest other city in this atlas is Norderstedt (17 km away). In September its highs average 17.9°C, about as warm as Hamburg, with 56 mm of rain.
Among the 120 cities listed in Germany, Hamburg ranks joint 96th of 120 for the warmest September highs and joint 24th of 120 for the driest September (rainfall, lowest first). The mean September high of those 120 cities is 18.8°C; Hamburg is 0.5°C cooler than that mean.
From September to October, average highs fall by 5.1°C to 13.1°C, and monthly rainfall stays at 56 mm.
The annual picture
September in context
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Hamburg climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 3.8°C-0.4°C | -0.4°C | 61 | 12.4 | 8.18 h |
| February | 4.8°C-0.4°C | -0.4°C | 49 | 10.5 | 9.810 h |
| March | 8.3°C1.0°C | 1.0°C | 53 | 10.8 | 11.812 h |
| April | 13.3°C4.3°C | 4.3°C | 47 | 10.5 | 14.014 h |
| May | 17.4°C8.4°C | 8.4°C | 64 | 11.2 | 15.916 h |
| June | 20.2°C11.7°C | 11.7°C | 71 | 12.2 | 16.917 h |
| July | 22.4°C14.1°C | 14.1°C | 85 | 13.3 | 16.516 h |
| August | 22.2°C14.1°C | 14.1°C | 76 | 13.1 | 14.815 h |
| September, selected | 18.3°C11.1°C | 11.1°C | 56 | 10.3 | 12.813 h |
| October | 13.1°C7.3°C | 7.3°C | 56 | 11.2 | 10.611 h |
| November | 7.7°C3.5°C | 3.5°C | 52 | 11.3 | 8.79 h |
| December | 4.5°C0.7°C | 0.7°C | 62 | 12.3 | 7.68 h |
Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
September in nearby cities
- Norderstedt in SeptemberGermany · 17 kmHigh 17.9°C · Low 11.2°C · 56 mm rain
- Lüneburg in SeptemberGermany · 44 kmHigh 18.5°C · Low 11.2°C · 53 mm rain
- Lübeck in SeptemberGermany · 58 kmHigh 18.0°C · Low 11.4°C · 51 mm rain
- Neumünster in SeptemberGermany · 58 kmHigh 17.7°C · Low 11.2°C · 56 mm rain
- Kiel in SeptemberGermany · 86 kmHigh 17.6°C · Low 11.6°C · 54 mm rain
- Bremerhaven in SeptemberGermany · 94 kmHigh 17.6°C · Low 12.4°C · 66 mm rain
- Schwerin in SeptemberGermany · 94 kmHigh 18.0°C · Low 11.1°C · 52 mm rain
- Bremen in SeptemberGermany · 95 kmHigh 18.3°C · Low 11.4°C · 58 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Hamburg) is explained once on the Hamburg year overview and on the Sources, method and limits page.