Sea Temperature in Santa Catalina Island in September

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Complete information on the sea temperature range in the Pacific Ocean in Santa Catalina Island in September. Historical daily data. Climate details for September. Tips on swimming conditions and beach relaxation in Santa Catalina Island. We find every spot where you can swim and tell you what the water temperature is there today and throughout the year.

Santa Catalina Island Climate and Swimming Opportunities in September

Santa Catalina Island lies within the California in United States. The average daytime temperature in Santa Catalina Island in September is 79°F (26°C), while the nighttime average is 62°F (17°C). There are typically two rainy days during the month, with a total precipitation of 0.2 inches (5 mm). The daylight duration in September in Santa Catalina Island is 12 hours, with an average of 9 hours of sunshine per day. The average wind speed in September is 7 mph (12 km/h), and the humidity level is around 70%.

The water temperature in Santa Catalina Island in September ranges from 64°F to 68°F (18°C to 20°C). At the beginning of the month, the average temperature is around 68°F (20°C), shifting to 68°F (20°C) by mid-September and reaching 66°F (19°C) in the last ten days. Overall, the average sea temperature in Santa Catalina Island for September is 66°F (19°C). Perfect balance of refreshing water and warm air. One of the best conditions for swimming.

Frequently Asked Questions About Water Temperatures in September in Santa Catalina Island