Weather in Hamburg in September 2025
Average weather
Average temperature in Hamburg in September
The expected average maximum temperature in September is +23°C with a maximum of +30°C and a minimum of +6°C.
The average maximum temperature goes down 8% by the end of the month, compared with the beginning of the month, from +20°C to +18°C.
Is Hamburg warm or cold in September?
Hamburg is typically mild in September.
Maximum temperatures go down compared to the previous month from +22°C to +18°C. The minimum temperature also goes down from +13°C to +10°C.
Pack a light jacket as it will be warm in the day and cool in the evenings.
Take a look at how September is compared to other months in Hamburg:
Climate in Hamburg in September
| August | September | October | ||||
|---|---|---|---|---|---|---|
| Avg. temperature | ||||||
| +22°C | +18°C | +13°C | ||||
| Min. temperature | ||||||
| +5°C | +1°C | -5°C | ||||
| Max. temperature | ||||||
| +36°C | +31°C | +28°C | ||||
| Rainfall | ||||||
| 73 mm | 56 mm | 59 mm | ||||
| Wind | ||||||
| 3 m/s | 3 m/s | 3 m/s | ||||
| Humidity | ||||||
| 76% | 80% | 84% | ||||
| Air pressure | ||||||
| 1013 HPa | 1014 HPa | 1013 HPa | ||||
| Sunny days | ||||||
| 5 | 5 | 4 | ||||
| Cloudy days | ||||||
| 6 | 8 | 10 | ||||
| Rainy days | ||||||
| 18 | 16 | 16 | ||||
| Snowy days | ||||||
| 0 | 0 | 0 | ||||
September weather is still as ok as in August. It’s getting colder in September. From +22°C in the day, the average maximum temperature lowers to +18°C. As September arrives, the amount of rainfall goes down. On average, the rainfall volume decreases from 73 mm to 56 mm. Humidity rises from 76% to 80%. The average wind speed doesn’t change much during September, staying around 3 m/s. The amount of sunny days stay about the same, averaging 5 sunny days during the month.
October brings much the same weather, it remains ok.
Wind
The average wind speed is 3 m/s getting up to 8 m/s which is a medium breeze. You can feel it, especially getting out of the water.
The average wind speed in Hamburg is gradually increasing during September, going from 2 m/s to 3 m/s over the course of the month.
Rain
How was the weather last September in Hamburg?
Climate Change over Years
The climate in Hamburg in September has not changed much over the last 43 years.
The average temperature was the lowest in 1987 (+10°C) and the highest in 2022 (+15°C). The driest year was 2018 with only 438 mm of rainfall, and the wettest year was 2007 with 938 mm.
FAQ
Is September a good time to visit Hamburg?
Can you sunbathe in Hamburg in September?
Is Hamburg rainy in September?
Is it sunny in Hamburg in September?
Other cities in Germany
Monthly weather in Hamburg
Source of the data
For this page, we’ve looked at the typical weather in Hamburg, based on historical hourly weather data from January 1, 1979, to December 31, 2023.
For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.