Best time to go to Napa Valley Average weather of Napa Valley, California

When is the best time to go to Napa Valley?

When is the best time to go to Napa Valley? Here's some information to help you in your decision:

The best months for good weather in Napa Valley are April, May, June, July, August, September and October
On average, the warmest months are June, July, August and September
Napa Valley has dry periods in June, July, August and September
The coldest months are January, February and December
The rainiest months are January, February and March

Annual weather in Napa Valley

Infographic of the best times to visit Napa Valley ©whereandwhen.net

Weather details in Napa Valley month by month

To get all the information about the climate and weather in Napa Valley for a specific month, click on the corresponding link below:

January February March April May June July August September October November December

Weather and climate in Napa Valley

Napa Valley enjoys a warm-summer Mediterranean climate in accordance with the Köppen-Geiger classification. The yearly average maximum temperature in Napa Valley is 72°F (ranging from 54°F in december to 90°F in july). Annual rainfall is 32.2in, with a minimum of 0.1in in july and a maximum of 6.5in in january.

From january to february the climate is just OK. In average, on the morning it is 41°F and it rains about 6.5in each month.
From march to april the climate is favorable. the thermometer goes up to 70°F°C and you can expect to have 2in of rainfall/month during this period.
Between may and october the climate is very good. The record temperature this month is 103°F and you can expect to have 2.2in of rainfall/month during this period.
In november the climate is favorable. In average, on the morning it is 47°F and, in november, 3 days of rain are expected.
In december the climate is passable, but still OK. By early evening, the temperature averages 47°F and it rains in december about 4.8in.

Charts: temperature and rainfall in Napa Valley

In the charts below, you can see the following seasonal norms for the city of Napa Valley: the minimum and maximum outdoor temperature, the risk and amount of monthly rainfall, daily average sunshine, and relative humidity for each month of the year.

Outside temperature

Precipitation (rainfall)

Daily sunshine hours

Humidity

Peak visitor numbers and tourist seasons in Napa Valley

Find out when Napa Valley has its high tourist season (the period when the influx of tourists is highest) and off-peak tourist season using our data and figures.

Tourist seasons in Napa Valley

Very low season in Napa Valley
The months with the lowest number of tourists are: January and February.
Low season in Napa Valley
The months with low numbers of tourists are: March, April and December.
High season in Napa Valley
The number of visitors to Napa Valley is high in: May, June, September, October and November.
Peak season in Napa Valley
The largest number of tourists visiting Napa Valley is during: July and August.

Figure: Visitor index for Napa Valley month by month

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Best time for low prices in Napa Valley

Average prices of hotels in Napa Valley month by month

Generally, December is the month with the lowest hotel prices in Napa Valley. So this is a great time to save on your holiday! In contrast, September is statistically the most expensive month of the year for hotels.