When to go · South San Francisco
South San Francisco in May
Great month. Inside South San Francisco's best window: Sep–Oct, Apr–Jun.
Key facts
- Verdict
- Great
- Temperature
- 18°C (64°F)64°F (18°C) / 10°C (50°F)50°F (10°C)
- average high / low
- Rain days
- 4
- Crowds
- Medium
- United States overall
- Prices
- Medium
- United States overall
Verdict
Inside South San Francisco's best window: Sep–Oct, Apr–Jun.
Is another month better than May?
No other month rates higher than May for South San Francisco in this guide.
Weather in May
- South San FranciscoHighs around 18 °C (64 °F), lows around 10 °C (50 °F), rain on about 4 daysHighs around 64 °F (18 °C), lows around 50 °F (10 °C), rain on about 4 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.
Memorial Day big impact
Last Monday of May · United States
Start of summer; roads and beaches full.
Crowds and prices
- Crowds · United States overall
- Medium
- Prices · United States overall
- Medium
United States overall: Warm and green; Memorial Day (last Monday) opens the summer season; timed-entry systems start at some parks.
Compare two months
Weather, crowds and prices for any two months in South San Francisco, side by side.
Verdict
May: Great
Apr: Great
Daytime high
May: 18 °C (64 °F)64 °F (18 °C)
Apr: 17 °C (63 °F)63 °F (17 °C)
Night low
May: 10 °C (50 °F)50 °F (10 °C)
Apr: 9 °C (48 °F)48 °F (9 °C)
Rain days
May: 4 (better)
Apr: 6
Crowds
May: Medium
Apr: Medium
Prices
May: Medium
Apr: Medium
Festivals listed
May: 1
Apr: 1
May: Inside South San Francisco's best window: Sep–Oct, Apr–Jun.
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