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 (59 °F) / 6 °C (43 °F), 10 rain days59 °F (15 °C) / 43 °F (6 °C), 10 rain daysCrowds: Low
- FebruaryAvoidListed as a month to avoid: Jul–Aug (hot, dry), Dec–Feb rain.17 °C (63 °F) / 7 °C (45 °F), 9 rain days63 °F (17 °C) / 45 °F (7 °C), 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 (66 °F) / 8 °C (46 °F), 9 rain days66 °F (19 °C) / 46 °F (8 °C), 9 rain daysCrowds: Medium · 2 festivals or holidays
- AprilGreatInside Sunnyvale's best window: Apr–Jun, Sep–Oct.21 °C (70 °F) / 9 °C (48 °F), 5 rain days70 °F (21 °C) / 48 °F (9 °C), 5 rain daysCrowds: Medium · 1 festival or holiday
- MayGreatInside Sunnyvale's best window: Apr–Jun, Sep–Oct.24 °C (75 °F) / 11 °C (52 °F), 3 rain days75 °F (24 °C) / 52 °F (11 °C), 3 rain daysCrowds: Medium · 1 festival or holiday
- JuneGreatInside Sunnyvale's best window: Apr–Jun, Sep–Oct.26 °C (79 °F) / 13 °C (55 °F), 1 rain days79 °F (26 °C) / 55 °F (13 °C), 1 rain daysCrowds: High
- JulyAvoidListed as a month to avoid: Jul–Aug (hot, dry), Dec–Feb rain.27 °C (81 °F) / 14 °C (57 °F), 0 rain days81 °F (27 °C) / 57 °F (14 °C), 0 rain daysCrowds: High · 1 festival or holiday
- AugustAvoidListed as a month to avoid: Jul–Aug (hot, dry), Dec–Feb rain.27 °C (81 °F) / 14 °C (57 °F), 0 rain days81 °F (27 °C) / 57 °F (14 °C), 0 rain daysCrowds: High
- SeptemberGreatInside Sunnyvale's best window: Apr–Jun, Sep–Oct.27 °C (81 °F) / 13 °C (55 °F), 1 rain days81 °F (27 °C) / 55 °F (13 °C), 1 rain daysCrowds: Medium · 1 festival or holiday
- OctoberGreatInside Sunnyvale's best window: Apr–Jun, Sep–Oct.24 °C (75 °F) / 11 °C (52 °F), 3 rain days75 °F (24 °C) / 52 °F (11 °C), 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 (66 °F) / 8 °C (46 °F), 7 rain days66 °F (19 °C) / 46 °F (8 °C), 7 rain daysCrowds: Medium · 1 festival or holiday
- DecemberAvoidListed as a month to avoid: Jul–Aug (hot, dry), Dec–Feb rain.15 °C (59 °F) / 6 °C (43 °F), 9 rain days59 °F (15 °C) / 43 °F (6 °C), 9 rain daysCrowds: High · 1 festival or holiday
Compare two months
Weather, crowds and prices for any two months in Sunnyvale, side by side.
Verdict
Apr: Great
May: Great
Daytime high
Apr: 21 °C (70 °F)70 °F (21 °C)
May: 24 °C (75 °F)75 °F (24 °C)
Night low
Apr: 9 °C (48 °F)48 °F (9 °C)
May: 11 °C (52 °F)52 °F (11 °C)
Rain days
Apr: 5
May: 3 (better)
Crowds
Apr: Medium
May: Medium
Prices
Apr: Medium
May: Medium
Festivals listed
Apr: 1
May: 1
April: Inside Sunnyvale's best window: Apr–Jun, Sep–Oct.
May: Inside Sunnyvale's best window: Apr–Jun, Sep–Oct.
Sunnyvale: figures are long-term averages from this guide, not a forecast.