San Diego in Autumn — Weather & What to Expect
Autumn in San Diego (September, October, November) averages daytime highs of 23.5°C and lows of 14.8°C, with around 53.1mm of rain across the season (7 rainy days in total). It includes some of the best months of the year to visit (September, October, November).
In the northern hemisphere, autumn in San Diego covers September, October, November.
Autumn in San Diego month by month
| Month | High | Low | Rain | Rainy days | Rating |
|---|---|---|---|---|---|
| September | 25.6°C | 18.3°C | 17.5mm | 1 | 10/10 |
| October | 23.9°C | 15.2°C | 8.8mm | 3 | 10/10 |
| November | 21.1°C | 10.8°C | 26.8mm | 3 | 10/10 |
What to pack for San Diego in autumn
- Light layers
- Sunscreen
- T-shirts and light trousers or shorts
- A warm layer for cool evenings
Frequently Asked Questions
Is autumn a good time to visit San Diego?
Autumn in San Diego rates around 10/10 — excellent time to visit. Average highs are 23.5°C with 53.1mm of rain across the season.
How hot is San Diego in autumn?
Daytime highs average 23.5°C (74.3°F) across September, October, November, with nights around 14.8°C.
What months are autumn in San Diego?
San Diego is in the northern hemisphere, so autumn covers September, October, November.
See also: best time to visit San Diego · San Diego annual climate · San Diego in spring · San Diego in summer · San Diego in winter
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Once you know what autumn in San Diego looks like, find out exactly what to pack for San Diego at 247PackingList. For currency, language and country facts, see the United States guide at 247CountryInfo.
Autumn in San Diego — what to pack
Hot-weather travel clothing
Sun protection, lightweight layers and a reusable water bottle are essential here.
Check Price →Check clothing sizes in United States at 247Sizing before you shop.
More autumn travel essentials
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Climate data sourced from Open-Meteo (open source, open data licence). Monthly averages calculated from 2020–2023 historical data. Weather can be unpredictable — always check a live forecast before travelling.