Measured, not vibes
Best Time to Visit Catalina Island
By measured weather comfort, the top months for Catalina Island are October, May, September — and RouteVerdict's editorial pick, which also weighs crowds and prices, is April, May, June, July, August, September, October. The table below is computed from ERA5 reanalysis data for 2020–2024, measured at Woodridge (Catalina Island) (45 m elevation).
Month by month
Catalina Island weather and comfort, 2020–2024
| Month | Avg high | Wet days | Comfort | Season |
|---|---|---|---|---|
| January | 7.6°C / 46°F | 8.7 | 19 | |
| February | 10°C / 50°F | 8.3 | 29 | |
| March | 14.9°C / 59°F | 8.3 | 56 | Shoulder |
| April | 19.3°C / 67°F | 9.2 | 75 | |
| May | 23.3°C / 74°F | 10.2 | 80 | Best |
| June | 29.3°C / 85°F | 9.7 | 63 | |
| July | 32°C / 90°F | 12.5 | 46 | |
| August | 29.8°C / 86°F | 13.7 | 55 | |
| September | 25.9°C / 79°F | 10.2 | 76 | Best |
| October | 20.7°C / 69°F | 7.7 | 82 | Best |
| November | 14.7°C / 58°F | 6.5 | 57 | Shoulder |
| December | 9.6°C / 49°F | 7.3 | 28 |
Comfort is RouteVerdict's 0–100 score: 100·exp(−(high−23)²/162) × (1 − min(0.35, wet days × 0.02)). The full method is on the methodology page. Weather data by Open-Meteo.com (ERA5, CC BY 4.0), 2020–2024 normals. Wet day = ≥1 mm precipitation.
What the seasons are actually like
Traveling to Catalina Island month by month
Catalina Island's comfort score peaks in October at 81.9, with an average high of 20.7°C and 7.7 wet days, just ahead of May's 79.6 and September's 75.6. July is the hottest month at 32°C, but comfort dips to 45.5, the lowest of the year outside winter, as the heat itself becomes limiting. RouteVerdict's editorial pick spans April through October, the full warm season, even though comfort varies considerably within that stretch.
FAQ
Catalina Island timing questions
What is the best month to visit Catalina Island?
By measured weather comfort (ERA5 2020–2024), the top months are October, May, and September, with October scoring highest. RouteVerdict's editorial pick is April, May, June, July, August, September, and October, which also weighs crowds, prices, and events.
What is the hottest month in Catalina Island?
July, with an average daily high of 32°C (90°F).
What is the rainiest month in Catalina Island?
August, averaging 13.7 days with at least 1 mm of precipitation.
When is shoulder season in Catalina Island?
November and March — the best-scoring months outside both the measured top three and RouteVerdict's editorial peak-season pick.
What is Catalina Island's hottest month, and is it the most comfortable?
July is the hottest at 32°C, but comfort drops to 45.5 — the lowest of the year outside winter — since the heat itself becomes the limiting factor rather than rain.
What is Catalina Island's single best month for weather?
October, with an average high of 20.7°C, 7.7 wet days, and a comfort score of 81.9 — the highest measured for any month.