Month-by-month travel weather
San Diego March weather
San Diego, United States · March
Rain can still happen, but less consistently
March often trends drier as San Diego moves out of winter rain. Many days feel comfortably mild.
Rain can still appear. When it does, evenings can feel cooler—layers help.
March averages at a glance
Average low
around 11–13°C
Average high
around 18–20°C
Average precipitation
around 20–45 mm
Rainy days
about 2–5 days
What to wear in March in San Diego
Actual feel will change with wind and rain, but use the suggestions below to build a comfortable layered outfit.
- • Light jacket/hoodie + layers works well.
- • Optional umbrella helps.
- • A thin evening layer helps.
Travel tips for visiting San Diego in March
- • Daytime can feel light; evenings can still cool down.
- • Rain events can still affect traffic more than expected.
March weather in San Diego — FAQ
Q. Is March rainy?
A. Less than mid-winter, but rain is still possible.
Q. Can I wear T-shirts?
A. Sometimes in sun, but evenings can still feel cool.
Explore San Diego
These pages are connected so you can compare conditions and decide for yourself.