Click on a day for an hourly weather forecast
The temperatures in Sint Niklaas in May are quite cold with temperatures between 9°C and 18°C, warm clothes are a must.
You can expect about 3 to 8 days of rain in Sint Niklaas 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 Sint Niklaas in May 2026.
If you’re planning to visit Sint Niklaas in the near future, we highly recommend that you review the 14 day weather forecast for Sint Niklaas before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 6° / 1° | 9 | 17 | 5 | 104 mm | Awful | Sint Niklaas in January |
| February | 7° / 2° | 8 | 15 | 5 | 83 mm | Awful | Sint Niklaas in February |
| March | 11° / 4° | 7 | 23 | 2 | 77 mm | Awful | Sint Niklaas in March |
| April | 15° / 6° | 4 | 26 | 1 | 43 mm | Good | Sint Niklaas in April |
| May | 18° / 9° | 5 | 26 | 0 | 69 mm | Good | Sint Niklaas in May |
| June | 21° / 12° | 5 | 25 | 0 | 80 mm | Good | Sint Niklaas in June |
| July | 23° / 14° | 4 | 27 | 0 | 67 mm | Perfect | Sint Niklaas in July |
| August | 23° / 14° | 5 | 26 | 0 | 78 mm | Perfect | Sint Niklaas in August |
| September | 20° / 12° | 3 | 27 | 0 | 42 mm | Good | Sint Niklaas in September |
| October | 15° / 9° | 5 | 26 | 0 | 67 mm | Good | Sint Niklaas in October |
| November | 10° / 5° | 8 | 22 | 1 | 95 mm | Bad | Sint Niklaas in November |
| December | 7° / 3° | 11 | 17 | 3 | 116 mm | Awful | Sint Niklaas in December |