Normally, you can expect the weather in Napier through the whole of May is 12 with the high being 15 and typical average low being around 12. The table below has further info:
| Month | Degrees Celsius |
|---|---|
| Temperature | 12 |
| High Temperature | 15 |
| Low Temperature | 12 |
| Sunshine Per Day | 8 |
Useful Links: Napier Weather: Average Weather & Yearly Climate