Kona weather in May
May in Kona: hot, a little rain, with clean air — an excellent time to visit.
#9 of 12 months in Kona · #174 of 604 destinations to visit in May · comfort 86/100 (tier A)
Updated June 2026 · climate normals from ERA5 reanalysis
Kona climate normals — May
| Daytime high | 24°C / 76°F | 🥵 hot |
|---|---|---|
| Nighttime low | 20°C / 69°F | |
| Feels like (high) | 29°C / 84°F | |
| Rainfall | 79 mm / 3.1 in | 🌦 some rain |
| Rainy days | 13 days | |
| Humidity | 85% | 💦 very humid |
| Dew point | 20°C / 67°F | |
| Sunshine | 11.6 h/day | |
| Daylight | 13.1 h | |
| Wind | 13 km/h / 8 mph | |
| Air quality (US AQI) | 26 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
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Kona in May — FAQ
- Is May a good time to visit Kona?
- May in Kona: hot, a little rain, with clean air — an excellent time to visit. It ranks #9 of 12 months for Kona on SeasonMap's comfort score (86/100).
- What is the weather like in Kona in May?
- In May, Kona averages a daily high of 24.3°C and a low of 20.3°C, with about 79.1 mm of rain over roughly 13 rainy days.
- What is the air quality in Kona in May?
- Kona has a mean US Air Quality Index of about 26 in May.