Early autumn · Weather & things to do
La Jolla in September
La Jolla's warmest month brings highs averaging 76°F (25°C), lows of 66°F (19°C) and about 0.2 in (5 mm) of rain.
September opens the best stretch on our comfort score, at 89/100 (6th of 12).
- Avg high
- 76°F (25°C)
- Avg low
- 66°F (19°C)
- Rain
- 0.2 in (5 mm)
- Humidity
- 72%
- Cloud cover
- 59%
- Daylight
- ~12 h 11 min
- Comfort score
- 89/100 · Great
What September feels like
Warm afternoons near 76°F (25°C) make long days outdoors easy.
After dark, temperatures fall to about 66°F (19°C).
Rain is scarce: about 0.2 in (5 mm) for the whole month.
Plan around September
September is one of La Jolla's best months on the climate data.
- Opens the best-scoring stretch on our comfort score: January, March & April and September – November.
- Comfort improves from 85/100 in August to 89/100.
- Our San Diego New Year's Eve route is planned for Dec 30 – Jan 1, a window set by the holiday season rather than the weather — September falls outside it.
What to pack for September
- Light, breathable clothes76°F afternoons
- Sunscreen, sunglasses and a hatstrong sun this month
- Comfortable walking shoesmost places below are best reached on foot or with short walks
What to do in La Jolla in September
With conditions on your side, the picks below favor time outside.
Children's Pool
A 1931 seawall beach now used by harbor seals, which haul out on the sand in large numbers in winter.
Why now September scores 89/100 for comfort, good conditions for being outside.
George's at the Cove
Long-running restaurant above the Cove with three levels, including the open-air Ocean Terrace.
Why now Highs near 76°F and 0.2 in of monthly rain make this an easy outdoor pick.
La Jolla Shores
A mile of flat, wide sand north of the village, the calmest beach in La Jolla for a walk or a swim.
Why now One to do outside while the weather is on your side.
The Cottage
Breakfast and brunch spot in a small cottage with a patio in the village, open for more than thirty years.
Nearby in September
- Downtown San Diego & Gaslamp Quarter in September~11 mi · highs 88°F, 0.2 in rain · 6°C (11°F) warmer by day, about as wet
- Palm Springs in September~80 mi · highs 101°F, 0.2 in rain · 14°C (24°F) warmer by day, about as wet
- Los Angeles in September~101 mi · highs 88°F, 0.1 in rain · 7°C (12°F) warmer by day, about as wet
- Pasadena in September~103 mi · highs 86°F, 0.1 in rain · 6°C (10°F) warmer by day, about as wet
NASA POWER 2001–2025 monthly averages on a ~50 km grid. Comfort scores weigh temperature, rain, humidity and cloud: see how we score each month. Check a forecast before you go.
La Jolla in September: quick answers
Is September a good time to visit La Jolla?
Yes. On the climate data it's one of the best months, scoring 89/100. Expect highs of 76°F (25°C) and 0.2 in (5 mm) of rain.
How hot is La Jolla in September?
Average highs are 76°F (25°C) and average lows 66°F (19°C), making it the warmest month by daytime highs.
Does it rain a lot in La Jolla in September?
Not much: about 0.2 in (5 mm) of rain falls across September on average, the 3rd-driest month of the year. The annual total is about 12.4 in (315 mm).
What should I pack for La Jolla in September?
Bring light, breathable clothes (76°F afternoons), sunscreen, sunglasses and a hat (strong sun this month) and comfortable walking shoes (most places below are best reached on foot or with short walks).
Planning La Jolla in September?
Plan it together in TripsCircle: one itinerary, one shared packing list and costs split as you go.