Napa weather in May 2021

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  • 23°C maximum daytime temperature in May in Napa23
    23°C max day temperature
  • 11 hours of sunshine per day
  • 3 days with some rainfall in May in Napa3
    3 days with some rainfall
  • 8°C minimum night-time temperature in May in Napa8
    8°C min night temperature
  • 14 hours of daylight per day in May in Napa14
    14 hours of daylight per day
  • No heat & humidity in May in Napa0
    No heat & humidity
  • 14 mm monthly rainfall in May in Napa14
    14 mm of monthly rainfall
  • UV (maximum) index 8 (Very High) in May in Napa8
    8 (Very High) UV index
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The May weather guide for Napa, California 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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How hot is it in Napa in May?

Daytime temperatures usually reach 23°C in Napa in May, falling to 8°C at night.

How sunny is it in Napa in May?

There are normally 11 hours of bright sunshine each day in Napa in May - that's 80% of daylight hours.

Does it ever rain in Napa in May?

There are usually 3 days with some rain in Napa in May and the average monthly rainfall is 14mm.

Napa sunrise & sunset times for May 2021

Browse the sunrise & sunset times for Napa in May 2021. Select a month to view Napa sunrise & sunset times for the next twelve months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Saturday, 1st May 2021 06:12 20:01
Sunday, 16th May 2021 05:57 20:15
Monday, 31st May 2021 05:48 20:27
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Metric (°C / mm)  |  Imperial (°F / inches)

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Where is hot in California in May for 2021/2022?

Below are average maximum temperatures at popular destinations in California in May. Select a destination to see more weather parameters.

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