What August feels like in San Diego
In San Diego, August brings late summer. Afternoons are warm and pleasant, good for long days out. The gap between afternoon and night is small, so nights stay mild and the temperature hardly changes after dark. The air is muggy, so it feels hotter than the thermometer suggests.
Rain in San Diego in August
August is a dry month in San Diego; rain falls about one day in 31. Wet days average about 5.5 mm (0.2 in), enough to soak you without an umbrella. That is lighter than the city's yearly norm of about 8.3 mm per rainy day. It is among the three driest months of the year.
Daylight and sunshine in August
On 15 August the sun rises at about 6:12 am and sets around 7:35 pm local time, giving 13 h 24 min of daylight. Days are getting shorter: 43 min less daylight than in mid-July. About 91% of daylight hours are sunny; in short, skies are mostly clear.
How August compares to the rest of the year
In San Diego's temperature order, August sits as the warmest month. Afternoons run 1.1°C (2°F) warmer than in July, with 2 mm more rain. Temperatures keep climbing into September. September averages a high of 25.3°C (77.5°F).
Who August suits
- Sightseeing: a good fit — the weather rarely gets in the way of a city walk.
- Parks & outdoor: a good fit — pleasant for gardens, parks and riversides.
- Beach: a good fit — warm and mostly dry on the coast.
Tips for visiting San Diego in August
Sunglasses
Plenty of sun, so bring sunglasses and a cap.
Quick questions
How warm is San Diego in August?
Afternoons average 25.4°C (77.7°F) and nights about 18.3°C (64.9°F) — warm by most people's standards. It is the warmest month of the year.
Does it rain a lot in San Diego in August?
Hardly — only about 1 rainy days and 6 mm for the whole month.
What should I wear in San Diego in August?
The numbers point to sunglasses. Evenings feel similar to the day, so the same clothes work from morning to night.
Is August or September better for visiting San Diego?
August scores better on our climate ranking (#3 of 12 vs #4), rated Great against Great.