Sea Temperature in La Jolla in September

© Shannon Ochoa

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

La Jolla Climate and Swimming Opportunities in September

La Jolla lies within the California in United States. The average daytime temperature in La Jolla in September is 79°F (26°C), while the nighttime average is 61°F (16°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 La Jolla is 12 hours, with an average of 9 hours of sunshine per day. The average wind speed in September is 7 mph (11 km/h), and the humidity level is around 72%.

The water temperature in La Jolla in September ranges from 66°F to 70°F (19°C to 21°C). At the beginning of the month, the average temperature is around 70°F (21°C), shifting to 70°F (21°C) by mid-September and reaching 68°F (20°C) in the last ten days. Overall, the average sea temperature in La Jolla for September is 68°F (20°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 La Jolla