Weather in San Diego in March
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Book now, pay at pickup — compare Hertz, Avis, Budget, Sixt and 800+ rental companies for March in San Diego.
Compare car hire prices → Affiliate link — we earn a commission at no extra cost to youMarch in San Diego is pleasantly mild, with average highs of 17.2°C and lows of 9.7°C. It is fairly wet (10 rainy days on average), with roughly 9.8 hours of sunshine a day. Weather-wise, this is one of the most reliable months to travel. For the complete picture, see the best time to visit San Diego — every month compared. Once you know when to go, find your San Diego packing list at 247PackingList.
Get ready for San Diego in March
Search flights to San Diego
Compare 100+ airlines for March — one search, best price.
Search Flights →Hot-weather travel clothing
Sun protection, lightweight layers and a reusable water bottle are essential here.
Check Price →What to pack for San Diego in March
- Warm layers
- Light jacket or fleece
- Comfortable walking shoes
- Light waterproof layer
Compare all months in San Diego
| Month | High | Rain | Rating |
|---|---|---|---|
| January | 17.3°C | 64.6mm | 10/10 |
| February | 18.1°C | 30.5mm | 10/10 |
| March | 17.2°C | 81.3mm | 10/10 |
| April | 19.2°C | 30.3mm | 10/10 |
| May | 20.3°C | 5.3mm | 10/10 |
| June | 22.1°C | 3.5mm | 10/10 |
| July | 24.1°C | 6.1mm | 10/10 |
| August | 25.5°C | 11.2mm | 10/10 |
| September | 25.6°C | 17.5mm | 10/10 |
| October | 23.9°C | 8.8mm | 10/10 |
| November | 21.1°C | 26.8mm | 10/10 |
| December | 17.9°C | 44.4mm | 10/10 |
Full month-by-month guide: best time to visit San Diego →
For facts about United States — currency, language and dialling code — see our United States country guide at 247CountryInfo. Travellers also find it useful to keep a San Diego travel guide to hand. Check clothing sizes in United States before you shop.
Frequently Asked Questions
Is March a good time to visit San Diego?
March rates 10/10 for visiting San Diego — excellent time to visit. Expect average highs of 17.2°C, 81.3mm of rain across the month and about 9.8 hours of daily sunshine.
What is the temperature in San Diego in March?
In March, San Diego has average highs of 17.2°C (63.0°F) and average lows of 9.7°C (49.5°F).
Does it rain in San Diego in March?
Some rain is likely. San Diego averages 81.3mm across about 10 rainy days in March, so a light waterproof layer is worth packing.
What should I wear in San Diego in March?
For San Diego in March (17.2°C highs / 9.7°C lows), pack warm layers plus light jacket or fleece, comfortable walking shoes, light waterproof layer.
More essentials for San Diego in March
Packing cubes
Keep the bag organised whatever the weather — compression cubes for every size.
Check Price →Travel first aid kit
Compact TSA-friendly kit for peace of mind wherever you travel.
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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.