Napa Weather in August

August in Napa brings high temperatures, with highs of 29°C (84°F) and nights dropping to 13°C (55°F). It's also the driest month of the year, ideal for those who want to avoid rain.

Rainfall in Napa in August

Enjoy minimal rain interruptions this month. It's an excellent time for outdoor plans, from sports to festivals. Past climate data indicates that roughly 0 days will see rain, totalling around 0.1 mm (0 in) for the month.

Temperature in Napa in August

Weather in Napa is at its perfect in August. Highs reach 29°C (84°F), while nights settle around 13°C (55°F). This kind of day-to-night contrast is typical for this time of year. At 13°C (55°F) overnight, it can feel quite a bit cooler after dark. Worth packing something warmer for evenings, but the cooler temperatures are ideal for sleeping.

Sunshine in Napa in August

The city usually sees around 290 hours of sunlight, indicating many sunny days — a great month for sightseeing.

If you favor pleasant temperatures and minimal rainfall, August is one of the best months to visit Napa.

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• January
• February
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• May
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• August

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For a detailed overview over the year and the best time to visit the United States of America, check out our Napa's climate page.

Napa Temperature in August

Min Temperature 13°C (55°F)  

Max Temperature 29°C (84°F)  

Chance of Rain 0%  

Precipitation 0.1 mm (0 in)  

Rainy days 0 days  

Sunshine 290 hours *  

Percentage Sunshine 71% *  

* Data from: Healdsburg, the United States of America (61 KM, 38 Miles).

What to Wear in Napa in August

Warm weather calls for comfortable, breathable clothing in August. Cotton t-shirts, shorts, light dresses, and sandals are perfect. You might still want a light layer for evenings or air-conditioned places (for example buses). And with plenty of sunshine hours, don’t forget sunglasses, sunscreen, and maybe a sun hat.

What To Do in Napa in August

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

Swimming

10/10

Cycling

8/10

Walking

8/10

Barbeque

10/10

Camping

10/10

Outdoor sports

8/10

Select a Month

Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit the United States of America, check out our Napa's climate page.

More climate data for Napa

Temperature Rainfall Sunshine

See the full Napa climate overview or explore weather in the United States of America.