Click on a day for an hourly weather forecast
The temperatures in Lummen in May are quite cold with temperatures between 8°C and 17°C, warm clothes are a must.
You can expect about 3 to 8 days of rain in Lummen during the month of May. It’s a good idea to bring along your umbrella so that you don’t get caught in poor weather.
Our weather forecast can give you a great sense of what weather to expect in Lummen in May 2026.
If you’re planning to visit Lummen in the near future, we highly recommend that you review the 14 day weather forecast for Lummen before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 5° / 1° | 9 | 15 | 7 | 94 mm | Awful | Lummen in January |
| February | 6° / 1° | 8 | 14 | 6 | 79 mm | Awful | Lummen in February |
| March | 11° / 3° | 7 | 22 | 2 | 73 mm | Awful | Lummen in March |
| April | 15° / 5° | 5 | 25 | 1 | 56 mm | Good | Lummen in April |
| May | 17° / 8° | 7 | 24 | 0 | 102 mm | Ok | Lummen in May |
| June | 21° / 11° | 6 | 24 | 0 | 115 mm | Good | Lummen in June |
| July | 23° / 13° | 6 | 25 | 0 | 108 mm | Perfect | Lummen in July |
| August | 23° / 14° | 5 | 26 | 0 | 107 mm | Perfect | Lummen in August |
| September | 20° / 11° | 5 | 25 | 0 | 67 mm | Good | Lummen in September |
| October | 15° / 8° | 5 | 26 | 0 | 67 mm | Good | Lummen in October |
| November | 10° / 5° | 8 | 21 | 1 | 84 mm | Bad | Lummen in November |
| December | 6° / 2° | 10 | 16 | 5 | 109 mm | Awful | Lummen in December |