You should expect the average temperature in Southampton in the course of May is 11. Highs are expected to be 17 and typical average low being around 9 degrees celsius. We have put some more detail below here:
| Month | Degrees Celsius |
|---|---|
| Temperature | 11 |
| High Temperature | 17 |
| Low Temperature | 9 |
| Sunshine Per Day | 7 |
Useful Links: Southampton Weather: Average Weather & Yearly Climate