Honolulu weather in May
May in Honolulu: hot, dry, with clean air — one of the best months to visit.
#1 of 12 months in Honolulu · #98 of 604 destinations to visit in May · comfort 89/100 (tier A)
Updated June 2026 · climate normals from ERA5 reanalysis
Honolulu climate normals — May
| Daytime high | 27°C / 80°F | 🥵 hot |
|---|---|---|
| Nighttime low | 23°C / 73°F | |
| Feels like (high) | 30°C / 86°F | |
| Rainfall | 28 mm / 1.1 in | ☀️ dry |
| Rainy days | 9 days | |
| Humidity | 72% | 💧 humid |
| Dew point | 19°C / 66°F | |
| Sunshine | 12.1 h/day | |
| Daylight | 13.2 h | |
| Wind | 21 km/h / 13 mph | |
| Air quality (US AQI) | 38 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
Where is Honolulu?
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Honolulu in May — FAQ
- Is May a good time to visit Honolulu?
- May in Honolulu: hot, dry, with clean air — one of the best months to visit. It ranks #1 of 12 months for Honolulu on SeasonMap's comfort score (89/100).
- What is the weather like in Honolulu in May?
- In May, Honolulu averages a daily high of 26.7°C and a low of 23°C, with about 27.5 mm of rain over roughly 9.4 rainy days.
- What is the air quality in Honolulu in May?
- Honolulu has a mean US Air Quality Index of about 38 in May.