Channel Islands National Park weather in May
May in Channel Islands National Park: cool, dry, with clean air — an excellent time to visit.
#3 of 12 months in Channel Islands National Park · #95 of 604 destinations to visit in May · comfort 89/100 (tier A)
Updated June 2026 · climate normals from ERA5 reanalysis
Channel Islands National Park climate normals — May
| Daytime high | 15°C / 59°F | 🙂 cool |
|---|---|---|
| Nighttime low | 12°C / 54°F | |
| Feels like (high) | 13°C / 55°F | |
| Rainfall | 8 mm / 0.3 in | ☀️ dry |
| Rainy days | 1 days | |
| Humidity | 80% | 💦 very humid |
| Dew point | 10°C / 49°F | |
| Sunshine | 12.6 h/day | |
| Daylight | 13.9 h | |
| Wind | 33 km/h / 20 mph | |
| Air quality (US AQI) | 40 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
Where is Channel Islands National Park?
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Channel Islands National Park in May — FAQ
- Is May a good time to visit Channel Islands National Park?
- May in Channel Islands National Park: cool, dry, with clean air — an excellent time to visit. It ranks #3 of 12 months for Channel Islands National Park on SeasonMap's comfort score (89/100).
- What is the weather like in Channel Islands National Park in May?
- In May, Channel Islands National Park averages a daily high of 15°C and a low of 12.2°C, with about 8 mm of rain over roughly 0.8 rainy days.
- What is the air quality in Channel Islands National Park in May?
- Channel Islands National Park has a mean US Air Quality Index of about 40 in May.