When to go · San Diego
San Diego, month by month
The best months for San Diego: Mar, Apr, May, Sep, Oct, Nov. Months to avoid: Jun.
Month by month
- JanuaryMixedOutside the best window (Mar–May, Sep–Nov). Across United States: Cold and snowy north and in the mountains; Florida, Hawaii and the desert Southwest are the picks.19 °C (66 °F) / 10 °C (50 °F), 6 rain days66 °F (19 °C) / 50 °F (10 °C), 6 rain daysCrowds: Low
- FebruaryMixedOutside the best window (Mar–May, Sep–Nov). Across United States: Still winter north; ski season in the Rockies; Presidents' Day weekend busy. Mardi Gras in New Orleans (date varies).19 °C (66 °F) / 11 °C (52 °F), 6 rain days66 °F (19 °C) / 52 °F (11 °C), 6 rain daysCrowds: Low · 1 festival or holiday
- MarchGreatInside San Diego's best window: Mar–May, Sep–Nov.19 °C (66 °F) / 13 °C (55 °F), 6 rain days66 °F (19 °C) / 55 °F (13 °C), 6 rain daysCrowds: Medium · 2 festivals or holidays
- AprilGreatInside San Diego's best window: Mar–May, Sep–Nov.21 °C (70 °F) / 14 °C (57 °F), 4 rain days70 °F (21 °C) / 57 °F (14 °C), 4 rain daysCrowds: Medium · 1 festival or holiday
- MayGreatInside San Diego's best window: Mar–May, Sep–Nov.21 °C (70 °F) / 16 °C (61 °F), 2 rain days70 °F (21 °C) / 61 °F (16 °C), 2 rain daysCrowds: Medium · 1 festival or holiday
- JuneAvoidListed as a month to avoid: Late May–Jun (May Gray, June Gloom); mid-Sep–Oct for wildfire risk.22 °C (72 °F) / 17 °C (63 °F), 1 rain days72 °F (22 °C) / 63 °F (17 °C), 1 rain daysCrowds: High
- JulyMixedOutside the best window (Mar–May, Sep–Nov). Across United States: Peak season: parks full, 4 July crowds, 40 °C (104 °F)+ in the desert, humid East. Alaska and the Pacific Northwest are at their best.Outside the best window (Mar–May, Sep–Nov). Across United States: Peak season: parks full, 4 July crowds, 104 °F (40 °C)+ in the desert, humid East. Alaska and the Pacific Northwest are at their best.24 °C (75 °F) / 19 °C (66 °F), 1 rain days75 °F (24 °C) / 66 °F (19 °C), 1 rain daysCrowds: High · 1 festival or holiday
- AugustMixedOutside the best window (Mar–May, Sep–Nov). Across United States: Hot and busy; wildfire smoke in the West, hurricane peak begins in the Southeast.25 °C (77 °F) / 19 °C (66 °F), 1 rain days77 °F (25 °C) / 66 °F (19 °C), 1 rain daysCrowds: High
- SeptemberGreatInside San Diego's best window: Mar–May, Sep–Nov.25 °C (77 °F) / 19 °C (66 °F), 1 rain days77 °F (25 °C) / 66 °F (19 °C), 1 rain daysCrowds: Medium · 1 festival or holiday
- OctoberGreatInside San Diego's best window: Mar–May, Sep–Nov.24 °C (75 °F) / 16 °C (61 °F), 2 rain days75 °F (24 °C) / 61 °F (16 °C), 2 rain daysCrowds: Medium
- NovemberGreatInside San Diego's best window: Mar–May, Sep–Nov.21 °C (70 °F) / 13 °C (55 °F), 4 rain days70 °F (21 °C) / 55 °F (13 °C), 4 rain daysCrowds: Medium · 1 festival or holiday
- DecemberMixedOutside the best window (Mar–May, Sep–Nov). Across United States: Holiday lights in New York, ski season opens; flights and hotels peak around Christmas and New Year.19 °C (66 °F) / 10 °C (50 °F), 6 rain days66 °F (19 °C) / 50 °F (10 °C), 6 rain daysCrowds: High · 1 festival or holiday
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.