Napier weather in September
September in Napier: cool, rainy, with clean air — an excellent time to visit.
#9 of 12 months in Napier · #500 of 897 destinations to visit in September · comfort 81/100 (tier A)
Updated June 2026 · climate normals from ERA5 reanalysis
Traveller notes on Napier in September
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Napier climate normals — September
| Daytime high | 16°C / 60°F | 🙂 cool |
|---|---|---|
| Nighttime low | 9°C / 48°F | |
| Rainfall | 96 mm / 3.8 in | 🌧 rainy |
| Rainy days | 11 days | |
| Humidity | 76% | 💦 very humid |
| Dew point | 8°C / 46°F | |
| Sunshine | 9 h/day | |
| Daylight | 11.8 h | |
| Wind | 20 km/h / 12 mph | |
| Snowfall | 0.2 cm / 0.1 in | |
| Air quality (US AQI) | 24 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
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Napier in September — FAQ
- Is September a good time to visit Napier?
- September in Napier: cool, rainy, with clean air — an excellent time to visit. It ranks #9 of 12 months for Napier on SeasonMap's comfort score (81/100).
- What is the weather like in Napier in September?
- In September, Napier averages a daily high of 15.8°C and a low of 8.9°C, with about 95.5 mm of rain over roughly 11 rainy days.
- What is the air quality in Napier in September?
- Napier has a mean US Air Quality Index of about 24 in September.