Weather in Hamm in September
How warm is it in Hamm in September?
In September the typical daytime high in Hamm is 15.8 °C on average, from 18.0 °C at the start to 13.1 °C at the end of the month.
That is 3.8 °C cooler than in August and 5.0 °C warmer than in October.
The last 10 years were 1.6 °C warmer than more than 40 years ago.
Click a day for more: afternoon and night, the usual range, records and how fast it is warming.
The average of the weather stations Altastenberg (71 km), Maastricht (167 km) and Bremen-Seefahrtschule (171 km); nearer ones count more.