When to go · Sunnyvale
Sunnyvale in December
Avoid month. Listed as a month to avoid: Jul–Aug (hot, dry), Dec–Feb rain.
Key facts
- Verdict
- Avoid
- Temperature
- 15°C59°F / 6°C43°F
- average high / low
- Rain days
- 9
- Crowds
- High
- United States overall
- Prices
- High
- United States overall
Verdict
AvoidBest and avoid months for Sunnyvale
Listed as a month to avoid: Jul–Aug (hot, dry), Dec–Feb rain.
Weather in December
- SunnyvaleHighs around 15 °C, lows around 6 °C, rain on about 9 daysHighs around 59 °F, lows around 43 °F, rain on about 9 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.
What to pack
- A warm layer for the evenings