Normally weather temperatures in Portchester in May is 10. Average high degrees are usually 16 degrees celsius with a low of 8. The table below has some further insights:
| Month | Degrees Celsius |
|---|---|
| Temperature | 10 |
| High Temperature | 16 |
| Low Temperature | 8 |
| Sunshine Per Day | 7 |
Useful Links: Portchester Weather: Average Weather & Yearly Climate