Normally average temperatures in Nijmegen right through May is 12. You can expect a high of 19 with lows around 8 degrees celsius. We have put some more detail below here:
| Month | Degrees Celsius |
|---|---|
| Temperature | 12 |
| High Temperature | 19 |
| Low Temperature | 8 |
Useful Links: Nijmegen Weather: Average Weather & Yearly Climate