Weather in Napa in August 2018

  • 28°C maximum daytime temperature in August in Napa28
    28°C max day temperature
  • 11 hours of sunshine per day (79% of daylight hours) in August in Napa11
    11 hours of sunshine per day
  • 1 day with some rainfall in August in Napa1
    1 day with some rainfall
  • 12°C minimum night-time temperature in August in Napa12
    12°C min night temperature
  • 14 hours of daylight per day in August in Napa14
    14 hours of daylight per day
  • Moderate heat & humidity in August in NapaM
    Moderate heat & humidity
  • 3 mm monthly rainfall in August in Napa3
    3 mm of monthly rainfall
  • UV (maximum) index 9 (Very High) in August in Napa9
    9 (Very High) UV index

Going to Napa? Find the best month to visit Napa based on the weather.

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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 2018.

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More about Napa

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Metric (°C / mm)  |  Imperial (°F / inches)

Guide to Napa weather in August

The average maximum daytime temperature in Napa in August is a warm 28°C (82°F) with moderate heat & humidity. The average night-time temperature is usually a cool 12°C (54°F). There are usually 11 hours of bright sunshine each day, which represents 79% of the 14 hours of daylight.

Expect 3mm (0.1 inches) of rainfall across the whole of August with 1 day with some rain falling. Maximum UV levels will be very high (9 UV index) at midday when the skies are clear.

Napa sunrise & sunset times for August 2018

Browse the sunrise & sunset times for Napa in August 2018. Select a month to view Napa sunrise & sunset times for the next twelve months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Wednesday, 1st August 2018 06:12 20:19
Thursday, 2nd August 2018 06:12 20:18
Friday, 3rd August 2018 06:13 20:17
Saturday, 4th August 2018 06:14 20:16
Sunday, 5th August 2018 06:15 20:15
Monday, 6th August 2018 06:16 20:13
Tuesday, 7th August 2018 06:17 20:12
Wednesday, 8th August 2018 06:18 20:11
Thursday, 9th August 2018 06:19 20:10
Friday, 10th August 2018 06:19 20:09
Saturday, 11th August 2018 06:20 20:08
Sunday, 12th August 2018 06:21 20:06
Monday, 13th August 2018 06:22 20:05
Tuesday, 14th August 2018 06:23 20:04
Wednesday, 15th August 2018 06:24 20:03
Thursday, 16th August 2018 06:25 20:01
Friday, 17th August 2018 06:26 20:00
Saturday, 18th August 2018 06:27 19:59
Sunday, 19th August 2018 06:27 19:57
Monday, 20th August 2018 06:28 19:56
Tuesday, 21st August 2018 06:29 19:55
Wednesday, 22nd August 2018 06:30 19:53
Thursday, 23rd August 2018 06:31 19:52
Friday, 24th August 2018 06:32 19:50
Saturday, 25th August 2018 06:33 19:49
Sunday, 26th August 2018 06:34 19:48
Monday, 27th August 2018 06:34 19:46
Tuesday, 28th August 2018 06:35 19:45
Wednesday, 29th August 2018 06:36 19:43
Thursday, 30th August 2018 06:37 19:42
Friday, 31st August 2018 06:38 19:40
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