When to go · South San Francisco
South San Francisco in December
Avoid month. Listed as a month to avoid: Jul–Aug fog and wind; Dec–Feb rain.
Key facts
- Verdict
- Avoid
- Temperature
- 14°C (57°F)57°F (14°C) / 7°C (45°F)45°F (7°C)
- average high / low
- Rain days
- 11
- Crowds
- High
- United States overall
- Prices
- High
- United States overall
Verdict
Listed as a month to avoid: Jul–Aug fog and wind; Dec–Feb rain.
Is another month better than December?
December is rated avoid. These months rate higher:
Weather in December
- South San FranciscoHighs around 14 °C (57 °F), lows around 7 °C (45 °F), rain on about 11 daysHighs around 57 °F (14 °C), lows around 45 °F (7 °C), rain on about 11 days
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.
Christmas Day big impact
25 Dec · United States
Most businesses closed; flights full from about 20 Dec to 2 Jan.
Crowds and prices
- Crowds · United States overall
- High
- Prices · United States overall
- High
United States overall: Holiday lights in New York, ski season opens; flights and hotels peak around Christmas and New Year.
High-price month: see what to book ahead.
Compare two months
Weather, crowds and prices for any two months in South San Francisco, side by side.
Verdict
Dec: Avoid
Apr: Great (better)
Daytime high
Dec: 14 °C (57 °F)57 °F (14 °C)
Apr: 17 °C (63 °F)63 °F (17 °C)
Night low
Dec: 7 °C (45 °F)45 °F (7 °C)
Apr: 9 °C (48 °F)48 °F (9 °C)
Rain days
Dec: 11
Apr: 6 (better)
Crowds
Dec: High
Apr: Medium
Prices
Dec: High
Apr: Medium
Festivals listed
Dec: 1
Apr: 1
December: Listed as a month to avoid: Jul–Aug fog and wind; Dec–Feb rain.
April: 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.
What to pack
- A warm layer for the evenings
- A rain jacket or umbrella and shoes that dry fast