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Best time to visit Napa, CA, USA

Our verdict

The best time to visit Napa is May

Based on a number of criteria such as the weather conditions, cost of flights and hotels, peak travel seasons and much more, May is the best time to go to Napa.

In the summer months, temperatures can reach as high as 30℃ (86℉) in Napa. The weather at night in the winter can get down to temperatures as low as 3℃ (37℉).

If you’re keen to see the sights of Napa during the day, the sun stays up the longest around July. February sees the most amount of rain in a month if you’re ok with chancing getting drenched, so if you’re looking to stay dry, visit in August instead.

To learn everything you need to know (and none of the stuff you don’t) about when to visit Napa, keep reading below. Plus, you’ll find tools to help you get the best deals on travel and hotels too!

Warmest month

July

Least rainfall

August

Most daylight

July

Napa seasons

Before you continue, it’s important to know when the seasons are in Napa as they might be different to yours depending on where in the world you’re travelling from. Napa is in the Northern Hemisphere, so the seasons fall during these months:

SeasonMonths
Summer June to August
Autumn/fall September to November
Winter December to February
Spring March to May

Average temperatures in Napa

If the temperature is a big factor for you to help you decide when to visit, the chart below shows the average minimum and maximum temperatures in Napa for each month side-by-side so you can easily see the difference in weather throughout the year. To see the temperatures in both Celsius (°C) and Fahrenheit (°F), hover or tap the shaded boxes on the graph.

Napa climate by month

If you already have a rough idea about which months you might want to travel, the section below shows a detailed breakdown of the climate in Napa for each month so you can see if it all suits your wants and needs. Scroll down, or use the quick menu below to jump to your preferred month.

Jump to:

JAN
FEB
MAR
APR
MAY
JUN
JUL
AUG
SEP
OCT
NOV
DEC

Napa in January

  • Average temperature: 9℃ (49℉)
  • Average high temperature: 14℃ (56℉)
  • Average low temperature: 6℃ (42℉)
  • Average humidity: 73%
  • Average sunny days: 21 days
  • Average rainfall: 56mm (2") over 9 days
21 days
of pure sunshine
9 days
of showers or rain

What to pack: If you’re heading to Napa in January, make sure you pack a warm jacket or coat.


Napa in February

  • Average temperature: 10℃ (50℉)
  • Average high temperature: 15℃ (59℉)
  • Average low temperature: 6℃ (43℉)
  • Average humidity: 73%
  • Average sunny days: 20 days
  • Average rainfall: 59mm (2") over 7 days
20 days
of pure sunshine
7 days
of showers or rain

What to pack: If you’re heading to Napa in February, make sure you pack a warm jacket or coat.


Napa in March

  • Average temperature: 11℃ (53℉)
  • Average high temperature: 17℃ (62℉)
  • Average low temperature: 7℃ (44℉)
  • Average humidity: 75%
  • Average sunny days: 18 days
  • Average rainfall: 46mm (2") over 12 days
18 days
of pure sunshine
12 days
of showers or rain

What to pack: If you’re heading to Napa in March, make sure you pack a warm jacket or coat.


Napa in April

  • Average temperature: 14℃ (57℉)
  • Average high temperature: 20℃ (67℉)
  • Average low temperature: 8℃ (46℉)
  • Average humidity: 69%
  • Average sunny days: 22 days
  • Average rainfall: 17mm (1") over 7 days
22 days
of pure sunshine
7 days
of showers or rain

What to pack: If you’re heading to Napa in April, make sure you pack a warm jacket or coat.


Napa in May

  • Average temperature: 16℃ (61℉)
  • Average high temperature: 22℃ (72℉)
  • Average low temperature: 10℃ (50℉)
  • Average humidity: 66%
  • Average sunny days: 26 days
  • Average rainfall: 16mm (1") over 5 days
26 days
of pure sunshine
5 days
of showers or rain

What to pack: If you’re heading to Napa in May, make sure you pack a coat or jumper for the evenings and some light clothes for the daytime.


Napa in June

  • Average temperature: 19℃ (66℉)
  • Average high temperature: 26℃ (80℉)
  • Average low temperature: 12℃ (54℉)
  • Average humidity: 60%
  • Average sunny days: 28 days
  • Average rainfall: 3mm (0") over 2 days
28 days
of pure sunshine
2 days
of showers or rain

What to pack: If you’re heading to Napa in June, make sure you pack t-shirts for the daytime and maybe a light jumper for the evenings as it cools down a bit.


Napa in July

  • Average temperature: 20℃ (68℉)
  • Average high temperature: 28℃ (83℉)
  • Average low temperature: 13℃ (56℉)
  • Average humidity: 61%
  • Average sunny days: 29 days
  • Average rainfall: 1mm (0") over 1 days
29 days
of pure sunshine
1 days
of showers or rain

What to pack: If you’re heading to Napa in July, make sure you pack t-shirts for the daytime and maybe a light jumper for the evenings as it cools down a bit.


Napa in August

  • Average temperature: 20℃ (68℉)
  • Average high temperature: 28℃ (82℉)
  • Average low temperature: 13℃ (56℉)
  • Average humidity: 63%
  • Average sunny days: 29 days
  • Average rainfall: 1mm (0") over 1 days
29 days
of pure sunshine
1 days
of showers or rain

What to pack: If you’re heading to Napa in August, make sure you pack t-shirts for the daytime and maybe a light jumper for the evenings as it cools down a bit.


Napa in September

  • Average temperature: 20℃ (68℉)
  • Average high temperature: 28℃ (82℉)
  • Average low temperature: 14℃ (56℉)
  • Average humidity: 57%
  • Average sunny days: 27 days
  • Average rainfall: 2mm (0") over 2 days
27 days
of pure sunshine
2 days
of showers or rain

What to pack: If you’re heading to Napa in September, make sure you pack t-shirts for the daytime and maybe a light jumper for the evenings as it cools down a bit.

Napa in October

  • Average temperature: 17℃ (63℉)
  • Average high temperature: 23℃ (73℉)
  • Average low temperature: 12℃ (53℉)
  • Average humidity: 59%
  • Average sunny days: 25 days
  • Average rainfall: 17mm (1") over 5 days
25 days
of pure sunshine
5 days
of showers or rain

What to pack: If you’re heading to Napa in October, make sure you pack a coat or jumper for the evenings, and t-shirts and light gear for the daytime.


Napa in November

  • Average temperature: 12℃ (54℉)
  • Average high temperature: 17℃ (63℉)
  • Average low temperature: 8℃ (47℉)
  • Average humidity: 67%
  • Average sunny days: 22 days
  • Average rainfall: 32mm (1") over 7 days
22 days
of pure sunshine
7 days
of showers or rain

What to pack: If you’re heading to Napa in November, make sure you pack a warm jacket or coat.


Napa in December

  • Average temperature: 9℃ (48℉)
  • Average high temperature: 13℃ (55℉)
  • Average low temperature: 6℃ (42℉)
  • Average humidity: 72%
  • Average sunny days: 20 days
  • Average rainfall: 54mm (2") over 10 days
20 days
of pure sunshine
10 days
of showers or rain

What to pack: If you’re heading to Napa in December, make sure you pack a warm jacket or coat.


Top FAQs

The hottest month of the year in Napa is usually July, where temperatures tend to rise to around 28℃ (83℉) in the middle of the day or early afternoon.
The month with the least amount of rain in Napa is generally around August. The dry season often coincides with cooler weather, so you should check the temperatures in August first to make sure it’s still a good time to go.
The rainiest time of year in Napa is generally around February, although the wetter season can sometimes extend a few months either side of February too.
If you want to get the most out of your time visiting Napa, or if you're just afraid of the dark, the days in July are usually the longest between sunrise and sunset.

Napa map