- Save EXTRA 10% on car hire worldwide with Priceline
- Discount available on Priceline Rental Car Express deals
- Book cars for 4 days or more. Not combinable
Napa weather in May 2021
Get the latest coronavirus (COVID-19) updates for the USA with current travel advice, statistics and online resources.
- 2323°C max day temperature
- 33 days with some rainfall
- 88°C min night temperature
- 1414 hours of daylight per day
- 0No heat & humidity
- 1414 mm of monthly rainfall
- 88 (Very High) UV index
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.
Recommended for California
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.
|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|
- Save EXTRA 10% on 3-5* hotels worldwide with Priceline
- Discount available on Pay Now & Express Deal Hotels
- Book hotels for 2 nights or more. Not combinable
Metric (°C / mm) | Imperial (°F / inches)
Discover more about California
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.
- Death Valley
- Beverly Hills
- Los Angeles
- Palm Springs
- Santa Monica
- San Diego
- Santa Barbara
- Big Sur
- San Francisco
- Lake Tahoe
Get your weekly fix of holiday inspiration from some of the world's best travel writers plus save on your next trip with the latest exclusive offers
We promise not to share your details
Popular travel offers
*affiliate links: find out how we are funded and why this helps us remain free to use.