Hilo weather in April
April in Hilo: warm, soaked, with clean air — a good time to visit.
#7 of 12 months in Hilo · #476 of 604 destinations to visit in April · comfort 69/100 (tier C)
Updated June 2026 · climate normals from ERA5 reanalysis
Hilo climate normals — April
| Daytime high | 24°C / 76°F | 🌤 warm |
|---|---|---|
| Nighttime low | 19°C / 67°F | |
| Feels like (high) | 27°C / 81°F | |
| Rainfall | 268 mm / 10.5 in | ⛈ soaked |
| Rainy days | 26 days | |
| Humidity | 85% | 💦 very humid |
| Dew point | 19°C / 66°F | |
| Sunshine | 11.1 h/day | |
| Daylight | 12.6 h | |
| Wind | 18 km/h / 11 mph | |
| Air quality (US AQI) | 26 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
Where is Hilo?
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Hilo in April — FAQ
- Is April a good time to visit Hilo?
- April in Hilo: warm, soaked, with clean air — a good time to visit. It ranks #7 of 12 months for Hilo on SeasonMap's comfort score (69/100).
- What is the weather like in Hilo in April?
- In April, Hilo averages a daily high of 24.3°C and a low of 19.2°C, with about 267.9 mm of rain over roughly 26 rainy days.
- What is the air quality in Hilo in April?
- Hilo has a mean US Air Quality Index of about 26 in April.