National City Weather in September

With daytime temperatures of 27°C (81°F) and nighttime lows of 18°C (64°F), September in National City brings high temperatures during the day. The excellent weather makes it an appealing time to visit.

Rainfall in National City in September

Typically, you can expect about a single day of rain this month, with 3.1 mm (0.1 in) on average. Any rain that does arrive is likely to be light drizzle rather than a proper shower.

Temperature in National City in September

National City has excellent weather in September, with days reaching 27°C (81°F) and nights cooling to 18°C (64°F). The days can feel warmer than the evenings, so packing for both parts of the day is a good idea. At 18°C (64°F) overnight, it can feel quite a bit cooler after dark. Worth packing something warmer for evenings, but the cooler temperatures are ideal for sleeping. On average, this month sees the highest temperatures of the year. Worth packing a few lighter outfits.

Sunshine in National City in September

Enjoy a sunny month with about 253 hours of sunshine, the clear skies make National City even more beautiful.

Our weather planner can help you find worldwide destinations with pleasant weather during this period. January, February, March, April, May, June, July, August, September, October and November typically offer the best weather for National City.