La Mesa Weather in September

Thinking of visiting La Mesa in September? Expect high temperatures reaching 25°C (77°F) during the day, dropping to 17°C (63°F) at night. Heavy showers are common during the rainy season.

Rainfall in La Mesa in September

As part of the rainy season, La Mesa sees around 15 days of rain in September, with an average of 462 mm (18 in). Showers during the rainy season tend to be heavy and can come down intensely. An umbrella is often not enough, so a poncho or waterproof jacket is a better choice.

Temperature in La Mesa in September

Daytime temperatures in La Mesa reach 25°C (77°F) in September, dropping to 17°C (63°F) at night. Overall, the month follows a fairly predictable daily temperature pattern. Nights drop to around 17°C (63°F), which is noticeably cooler than the daytime. A light jacket for the evening is a sensible addition, and the cool nights tend to make sleeping comfortable.

Sunshine in La Mesa in September

The area enjoys a moderate level of sunlight, with around 111 hours. It's a good balance between sunny and rainy days.

September in La Mesa can still be great, but if you prefer pleasant temperatures along with dry and sunny conditions, our weather planner can help you explore other options in the world.