When to go · South San Francisco
South San Francisco, month by month
The best months for South San Francisco: Apr, May, Jun, Sep, Oct. Months to avoid: Jan, Feb, Jul, Aug, Dec.
Month by month
- JanuaryAvoidListed as a month to avoid: Jul–Aug fog and wind; Dec–Feb rain.14 °C (57 °F) / 7 °C (45 °F), 11 rain days57 °F (14 °C) / 45 °F (7 °C), 11 rain daysCrowds: Low
- FebruaryAvoidListed as a month to avoid: Jul–Aug fog and wind; Dec–Feb rain.15 °C (59 °F) / 8 °C (46 °F), 10 rain days59 °F (15 °C) / 46 °F (8 °C), 10 rain daysCrowds: Low · 1 festival or holiday
- MarchGoodOutside the best window (Sep–Oct, Apr–Jun). Across United States: Spring break fills Florida beaches and parks; the desert parks come into season.16 °C (61 °F) / 8 °C (46 °F), 10 rain days61 °F (16 °C) / 46 °F (8 °C), 10 rain daysCrowds: Medium · 2 festivals or holidays
- AprilGreatInside South San Francisco's best window: Sep–Oct, Apr–Jun.17 °C (63 °F) / 9 °C (48 °F), 6 rain days63 °F (17 °C) / 48 °F (9 °C), 6 rain daysCrowds: Medium · 1 festival or holiday
- MayGreatInside South San Francisco's best window: Sep–Oct, Apr–Jun.18 °C (64 °F) / 10 °C (50 °F), 4 rain days64 °F (18 °C) / 50 °F (10 °C), 4 rain daysCrowds: Medium · 1 festival or holiday
- JuneGreatInside South San Francisco's best window: Sep–Oct, Apr–Jun.20 °C (68 °F) / 11 °C (52 °F), 2 rain days68 °F (20 °C) / 52 °F (11 °C), 2 rain daysCrowds: High
- JulyAvoidListed as a month to avoid: Jul–Aug fog and wind; Dec–Feb rain.21 °C (70 °F) / 12 °C (54 °F), 1 rain days70 °F (21 °C) / 54 °F (12 °C), 1 rain daysCrowds: High · 1 festival or holiday
- AugustAvoidListed as a month to avoid: Jul–Aug fog and wind; Dec–Feb rain.21 °C (70 °F) / 13 °C (55 °F), 1 rain days70 °F (21 °C) / 55 °F (13 °C), 1 rain daysCrowds: High
- SeptemberGreatInside South San Francisco's best window: Sep–Oct, Apr–Jun.22 °C (72 °F) / 13 °C (55 °F), 2 rain days72 °F (22 °C) / 55 °F (13 °C), 2 rain daysCrowds: Medium · 1 festival or holiday
- OctoberGreatInside South San Francisco's best window: Sep–Oct, Apr–Jun.21 °C (70 °F) / 12 °C (54 °F), 4 rain days70 °F (21 °C) / 54 °F (12 °C), 4 rain daysCrowds: Medium
- NovemberMixedOutside the best window (Sep–Oct, Apr–Jun). Across United States: Quiet between holidays; Thanksgiving week is the busiest travel period of the year.17 °C (63 °F) / 9 °C (48 °F), 8 rain days63 °F (17 °C) / 48 °F (9 °C), 8 rain daysCrowds: Medium · 1 festival or holiday
- DecemberAvoidListed as a month to avoid: Jul–Aug fog and wind; Dec–Feb rain.14 °C (57 °F) / 7 °C (45 °F), 11 rain days57 °F (14 °C) / 45 °F (7 °C), 11 rain daysCrowds: High · 1 festival or holiday
Compare two months
Weather, crowds and prices for any two months in South San Francisco, side by side.
Verdict
Apr: Great
May: Great
Daytime high
Apr: 17 °C (63 °F)63 °F (17 °C)
May: 18 °C (64 °F)64 °F (18 °C)
Night low
Apr: 9 °C (48 °F)48 °F (9 °C)
May: 10 °C (50 °F)50 °F (10 °C)
Rain days
Apr: 6
May: 4 (better)
Crowds
Apr: Medium
May: Medium
Prices
Apr: Medium
May: Medium
Festivals listed
Apr: 1
May: 1
April: Inside South San Francisco's best window: Sep–Oct, Apr–Jun.
May: Inside South San Francisco's best window: Sep–Oct, Apr–Jun.
South San Francisco: figures are long-term averages from this guide, not a forecast.