Germany
Weather in Hamm through the year
The average of the weather stations Altastenberg (71 km), Maastricht (167 km) and Bremen-Seefahrtschule (171 km); nearer ones count more.
| Month | Average high | Coolest to warmest day |
|---|---|---|
| January | 1.5 °C | 1.3 °C – 2.0 °C |
| February | 2.5 °C | 1.7 °C – 3.8 °C |
| March | 6.0 °C | 3.9 °C – 8.1 °C |
| April | 10.3 °C | 8.2 °C – 12.4 °C |
| May | 14.8 °C | 12.6 °C – 16.8 °C |
| June | 18.2 °C | 17.0 °C – 19.4 °C |
| July | 19.6 °C | 19.0 °C – 20.4 °C |
| August | 19.6 °C | 18.1 °C – 20.4 °C |
| September | 15.8 °C | 13.1 °C – 18.0 °C |
| October | 10.9 °C | 8.5 °C – 12.8 °C |
| November | 5.4 °C | 3.1 °C – 8.3 °C |
| December | 2.6 °C | 2.1 °C – 3.0 °C |