La Jolla
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La Jolla Weather in September

In La Jolla, September brings high daytime temperatures around 25°C (77°F), with nights cooling to 18°C (64°F). Minimal rainfall is to be expected.

Rainfall in La Jolla in September

Based on our climate data of the past 30 years, about a single day of rain are anticipated, with 4.8 mm (0.2 in) on average. If rain does fall, it tends to be a moderate shower rather than anything heavy.

Temperature in La Jolla in September

If you're visiting La Jolla in September, expect excellent temperatures with highs of 25°C (77°F) and overnight lows of 18°C (64°F). This kind of day-to-night contrast is typical for this time of year. With lows of 18°C (64°F), nights are cool. If you're out after dark, an extra layer will keep you comfortable. The cooler air at night is also great for getting a good rest. On average, this month sees the highest temperatures of the year. Worth packing a few lighter outfits.

Sunshine in La Jolla in September

With approximately 253 hours of sunshine, the days are filled with clear skies. It makes it a perfect month for being outside.

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

La Jolla Temperature in September

Min Temperature
18°C (64°F)
Max Temperature
25°C (77°F)
Chance of Rain
3%
Precipitation
4.8 mm (0.2 in)
Rainy days
a single day
Humidity
74% *
Sunshine
253 hours *
Percentage Sunshine
68% *
* Data from: San Diego, the United States of America (18 KM, 11 Miles).

La Jolla Weather by Month

Pick a month to see the average temperature, rainfall and sunshine in La Jolla - and find the best time to visit.

Best Places in the United States of America in September

Find out more about the weather in the United States of America and which places have the best travel conditions in this month. See all of the United States of America in September →

perfect weather
pleasant
tolerable
unpleasant
poor

Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).

What to Wear in La Jolla in September

Warm temperatures in September make for comfortable sightseeing weather. Pack breathable fabrics like cotton shirts, knee-length shorts or skirts, and comfortable walking shoes. A thin long sleeve for indoor spaces is handy. With minimal rainfall expected, you can leave the rain gear at home. And with plenty of sunshine hours, don’t forget sunglasses, sunscreen, and maybe a sun hat.

What To Do in La Jolla in September

We rated the following activities from 1 (least suitable) to 10 (best) to do.

  • Swimming
    10/10
  • Cycling
    8/10
  • Walking
    8/10
  • Barbeque
    10/10
  • Camping
    10/10
  • Outdoor sports
    8/10

La Jolla 3-Day Forecast

Popular in September

Where to go in September - average daytime high across popular destinations.

Bucket list

Need travel inspiration? Check out our bucket list articles and be inspired.