When to go · San Diego
San Diego in March
Great month. Inside San Diego's best window: Mar–May, Sep–Nov.
Key facts
- Verdict
- Great
- Temperature
- 19°C (66°F)66°F (19°C) / 13°C (55°F)55°F (13°C)
- average high / low
- Rain days
- 6
- Crowds
- Medium
- United States overall
- Prices
- Medium
- United States overall
Verdict
Inside San Diego's best window: Mar–May, Sep–Nov.
Is another month better than March?
No other month rates higher than March for San Diego in this guide.
Weather in March
- San DiegoHighs around 19 °C (66 °F), lows around 13 °C (55 °F), rain on about 6 daysHighs around 66 °F (19 °C), lows around 55 °F (13 °C), rain on about 6 days
- California coast, United States · San Francisco, Los Angeles, San Diego, Big Surfine
Mild all year; San Francisco is foggy and cool in summer; wildfire smoke possible June–November; winter storms can close Highway 1 at Big Sur.
Festivals and holidays
Dates as our data lists them. Moving holidays (lunar and Islamic calendars, Easter) shift every year: check the date for your year before you build a trip on it.
Mardi Gras (New Orleans) big impact
Feb or Mar (varies) · United States
New Orleans hotels triple in price and sell out.
Spring break big impact
March–April · United States
Students fill Florida, Texas and Mexico beaches; parks busy.
Crowds and prices
- Crowds · United States overall
- Medium
- Prices · United States overall
- Medium
United States overall: Spring break fills Florida beaches and parks; the desert parks come into season.
Compare two months
Weather, crowds and prices for any two months in San Diego, side by side.
Verdict
Mar: Great
Apr: Great
Daytime high
Mar: 19 °C (66 °F)66 °F (19 °C)
Apr: 21 °C (70 °F)70 °F (21 °C)
Night low
Mar: 13 °C (55 °F)55 °F (13 °C)
Apr: 14 °C (57 °F)57 °F (14 °C)
Rain days
Mar: 6
Apr: 4 (better)
Crowds
Mar: Medium
Apr: Medium
Prices
Mar: Medium
Apr: Medium
Festivals listed
Mar: 2
Apr: 1
March: Inside San Diego's best window: Mar–May, Sep–Nov.
April: Inside San Diego's best window: Mar–May, Sep–Nov.
San Diego: figures are long-term averages from this guide, not a forecast.
What to pack
Nothing unusual for the weather this month.