When to go · Sunnyvale
Sunnyvale, month by month
The best months for Sunnyvale: Apr, May, Jun, Sep, Oct. Months to avoid: Jan, Feb, Jul, Aug, Dec.
Month by month
- JanuaryAvoidListed as a month to avoid: Jul–Aug (hot, dry), Dec–Feb rain.15 °C / 6 °C, 10 rain days59 °F / 43 °F, 10 rain daysCrowds: Low
- FebruaryAvoidListed as a month to avoid: Jul–Aug (hot, dry), Dec–Feb rain.17 °C / 7 °C, 9 rain days63 °F / 45 °F, 9 rain daysCrowds: Low · 1 festival or holiday
- MarchGoodOutside the best window (Apr–Jun, Sep–Oct). Across United States: Spring break fills Florida beaches and parks; the desert parks come into season.19 °C / 8 °C, 9 rain days66 °F / 46 °F, 9 rain daysCrowds: Medium · 2 festivals or holidays
- AprilGreatInside Sunnyvale's best window: Apr–Jun, Sep–Oct.21 °C / 9 °C, 5 rain days70 °F / 48 °F, 5 rain daysCrowds: Medium · 1 festival or holiday
- MayGreatInside Sunnyvale's best window: Apr–Jun, Sep–Oct.24 °C / 11 °C, 3 rain days75 °F / 52 °F, 3 rain daysCrowds: Medium · 1 festival or holiday
- JuneGreatInside Sunnyvale's best window: Apr–Jun, Sep–Oct.26 °C / 13 °C, 1 rain days79 °F / 55 °F, 1 rain daysCrowds: High
- JulyAvoidListed as a month to avoid: Jul–Aug (hot, dry), Dec–Feb rain.27 °C / 14 °C, 0 rain days81 °F / 57 °F, 0 rain daysCrowds: High · 1 festival or holiday
- AugustAvoidListed as a month to avoid: Jul–Aug (hot, dry), Dec–Feb rain.27 °C / 14 °C, 0 rain days81 °F / 57 °F, 0 rain daysCrowds: High
- SeptemberGreatInside Sunnyvale's best window: Apr–Jun, Sep–Oct.27 °C / 13 °C, 1 rain days81 °F / 55 °F, 1 rain daysCrowds: Medium · 1 festival or holiday
- OctoberGreatInside Sunnyvale's best window: Apr–Jun, Sep–Oct.24 °C / 11 °C, 3 rain days75 °F / 52 °F, 3 rain daysCrowds: Medium
- NovemberMixedOutside the best window (Apr–Jun, Sep–Oct). Across United States: Quiet between holidays; Thanksgiving week is the busiest travel period of the year.19 °C / 8 °C, 7 rain days66 °F / 46 °F, 7 rain daysCrowds: Medium · 1 festival or holiday
- DecemberAvoidListed as a month to avoid: Jul–Aug (hot, dry), Dec–Feb rain.15 °C / 6 °C, 9 rain days59 °F / 43 °F, 9 rain daysCrowds: High · 1 festival or holiday