Napa weather in August 2024

Expect 28°C daytime maximum temperatures in the shade with on average 11 hours of sunshine per day in Napa in August. Check more long-term weather averages for Napa in August before you book your next holiday to California in 2024/2025.

• 28
  28°C max day temperature
• 11
  11 hours of sunshine per day
• 1
  1 day with some rainfall
• 12
  12°C min night temperature
• 14
  14 hours of daylight per day
• M
  Moderate heat & humidity
• 3
  3 mm of monthly rainfall
• 9
  9 (Very High) UV index

The August weather guide for California (Napa) shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

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Napa August sunrise & sunset times

Browse the sunrise and sunset times for Napa in August 2024. Select a month to view Napa sunrise and sunset times for the next 12 months.

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