Temperature
Cool by day, brisk at night.
Channel Islands National Park is usually most comfortable in September and October. Typical daytime highs range from 56–64°F across the year. Most months see little rain.

Cool by day, brisk at night.
A few rainy days. About 3 wet days, more than in most months.
Plenty of sun this month.
In November, days and nights feel about the same, around 54°.
Mostly clear skies this month.
Breezy conditions are typical in November. More a comfort consideration than a planning concern.
November stays around 60°F through the day and night.
| Month | High°F | Low°F | Rainin | Wet days | Sunh | Humidity% |
|---|---|---|---|---|---|---|
| Jan | 58 | 55 | 2.8 | 6 | 8.7 | 79 |
| Feb | 57 | 55 | 2.9 | 6 | 9.3 | 79 |
| Mar | 57 | 55 | 1.9 | 5 | 10.8 | 81 |
| Apr | 56 | 54 | 0.6 | 2 | 12.0 | 83 |
| May | 57 | 55 | 0.3 | 1 | 13.4 | 86 |
| Jun | 59 | 57 | 0.0 | 0 | 13.7 | 88 |
| Jul | 62 | 60 | 0.0 | 0 | 13.6 | 89 |
| Aug | 63 | 61 | 0.0 | 0 | 12.8 | 89 |
| Sep | 64 | 62 | 0.1 | 0 | 11.8 | 87 |
| Oct | 64 | 61 | 0.3 | 2 | 10.7 | 83 |
| Nov | 61 | 59 | 0.8 | 3 | 9.5 | 79 |
| Dec | 58 | 56 | 2.1 | 5 | 8.7 | 77 |
Similar climates
Want a side-by-side climate view? Compare Channel Islands National Park with New York City.
Typical monthly values are based on long-term climate records. Useful for planning, not a forecast. Check the weather before you travel.
Sunshine: source type is not yet identified at metric level.
Local microclimates can vary by beach, neighborhood, trail, or elevation.
Last updated: Aug 27, 2026
Data & methodology