Honolulu weather in August
August in Honolulu: hot, dry, with clean air — an excellent time to visit.
#4 of 12 months in Honolulu · #93 of 604 destinations to visit in August · comfort 89/100 (tier A)
Updated June 2026 · climate normals from ERA5 reanalysis
Honolulu climate normals — August
| Daytime high | 28°C / 83°F | 🥵 hot |
|---|---|---|
| Nighttime low | 25°C / 77°F | |
| Feels like (high) | 32°C / 90°F | |
| Rainfall | 16 mm / 0.6 in | ☀️ dry |
| Rainy days | 6 days | |
| Humidity | 71% | 💧 humid |
| Dew point | 20°C / 68°F | |
| Sunshine | 11.9 h/day | |
| Daylight | 12.8 h | |
| Wind | 22 km/h / 13 mph | |
| Air quality (US AQI) | 33 | 🍃 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 August — FAQ
- Is August a good time to visit Honolulu?
- August in Honolulu: hot, dry, with clean air — an excellent time to visit. It ranks #4 of 12 months for Honolulu on SeasonMap's comfort score (89/100).
- What is the weather like in Honolulu in August?
- In August, Honolulu averages a daily high of 28.4°C and a low of 24.8°C, with about 16.2 mm of rain over roughly 6 rainy days.
- What is the air quality in Honolulu in August?
- Honolulu has a mean US Air Quality Index of about 33 in August.