Napa
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Napa Weather in May

In Napa, May brings high daytime temperatures around 25°C (77°F), with nights cooling to 10°C (50°F). Some rainfall is to be expected.

Rainfall in Napa in May

The climate data from previous years indicates about 3 days of rain, averaging 16 mm (0.6 in) for the month. The occasional light shower is possible, but rain is rarely an issue this month.

Temperature in Napa in May

If you're visiting Napa in May, expect excellent temperatures with highs of 25°C (77°F) and overnight lows of 10°C (50°F). This kind of day-to-night contrast is typical for this time of year. Nights fall to 10°C (50°F), which is cold enough to feel it indoors too. A good thick duvet makes all the difference for a comfortable night's sleep.

Sunshine in Napa in May

Expect sunny days throughout the month, with an estimated 310 hours of sunshine. This makes it a pleasant time to visit Napa.

If you're inclined towards comfortable temperatures and drier conditions, May is a good time to visit Napa.

Napa Temperature in May

Min Temperature
10°C (50°F)
Max Temperature
25°C (77°F)
Chance of Rain
10%
Precipitation
16 mm (0.6 in)
Rainy days
3 days
Sunshine
310 hours *
Percentage Sunshine
76% *
* Data from: Healdsburg, the United States of America (61 KM, 38 Miles).

Napa Weather by Month

Pick a month to see the average temperature, rainfall and sunshine in Napa - and find the best time to visit.

Best Places in the United States of America in May

Find out more about the weather in the United States of America and which places have the best travel conditions in this month. See all of the United States of America in May →

perfect weather
pleasant
tolerable
unpleasant
poor

Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).

What to Wear in Napa in May

Comfortable temperatures call for an easy wardrobe in May. Pack summer basics like t-shirts and shorts, but include a light jacket for cooler moments. A pair of comfortable walking shoes is essential. Dry conditions mean you won't need to worry about rain protection. Don't forget sun protection, sunglasses, sunscreen, and a hat. These are all good ideas with this much sunshine.

What To Do in Napa in May

We rated the following activities from 1 (least suitable) to 10 (best) to do.

  • Swimming
    10/10
  • Cycling
    10/10
  • Walking
    10/10
  • Barbeque
    9/10
  • Camping
    5/10
  • Outdoor sports
    10/10

Napa 3-Day Forecast

More climate data for Napa

Popular in May

Where to go in May - average daytime high across popular destinations.

Bucket list

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