The best times to visit Southern California for ideal weather are

April 9th to July 1st

or

September 10th to November 18th

based on average temperature and humidity from NOAA (the National Oceanic and Atmospheric Administration). Read below for more weather and travel details.


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Weather in Southern California

Temperature

Average temperatures in Southern California vary greatly. Considering humidity, temperatures feel very nice much of the year, but hot in the summer and cold in the winter with a very low chance of rain or snow throughout the year. The area is somewhat temperate — in the 50th percentile for pleasant weather — compared to tourist destinations worldwide. Weeks with ideal weather are listed above. If you’re looking for the very warmest time to visit Southern California, the hottest months are August, July, and then September. See average monthly temperatures below. The warmest time of year is generally late August to early September where highs are regularly around 98.7°F (37.1°C) with temperatures rarely dropping below 63.8°F (17.7°C) at night.

Southern California Temperatures (Fahrenheit)

Key
High
Average
Low

Southern California Temperatures (Celsius)

Key
High
Average
Low

“Feels-Like” Temperatures

The way we experience weather isn’t all about temperature. Higher temperatures affect us much more at higher humidity, and colder temperatures feel piercing with high winds. Our perceived temperatures factor in humidity and wind chill to better represent how hot or cold the day feels to a person.

Southern California Perceived Temperature (F)

Key
High
Average
Low

Southern California Perceived Temperature (C)

Key
High
Average
Low

 

Average Southern California Temperatures by Month

Daily highs (averaged for the month) usually give the best indication of the weather. A significantly lower mean and low generally just means it gets colder at night.

Show Fahrenheit

Month Avg. High (°F) Avg. Mean (°F) Avg. Low (°F)
Jan 67.8 51.2 36.4
Feb 67.3 51.2 37.2
Mar 73.4 55.8 40
Apr 77 59.1 43.5
May 81.4 64.3 49.2
Jun 88.4 70.5 54.5
Jul 93.6 76.2 60.7
Aug 95.5 77.3 61.1
Sep 93.1 74.3 58.3
Oct 83.4 65.2 49.6
Nov 74.9 56.7 40.9
Dec 64.9 49.5 36.5

Show Celsius

Month Avg. High (°C) Avg. Mean (°C) Avg. Low (°C)
Jan 19.9 10.7 2.4
Feb 19.6 10.7 2.9
Mar 23 13.2 4.4
Apr 25 15.1 6.4
May 27.4 17.9 9.6
Jun 31.3 21.4 12.5
Jul 34.2 24.6 15.9
Aug 35.3 25.2 16.2
Sep 33.9 23.5 14.6
Oct 28.6 18.4 9.8
Nov 23.8 13.7 4.9
Dec 18.3 9.7 2.5


 

Precipitation (Rain or Snow)

If dry weather is what you’re after, the months with the lowest chance of significant precipitation in Southern California are June, July, and then September. Note that we define “significant precipitation” as .1 inches or more in this section. The lowest chance of rain or snow occurs around early May. For example, on the week of April 30th there are no days of precipitation on average. By contrast, it’s most likely to rain or snow in late January with an average of 1 days of significant precipitation the week of January 22nd.

When can you find snow in Southern California? Weather stations report no annual snow. Please note that a value of 0 for snow in the graph below may either mean there was no snow, or that snow is unreported.

Chanceof Precipitation

The graph below shows the % chance of rainy and snowy days in Southern California.

Key
Days with precipitation

Snow on the Ground

The graph below shows the average snow on the ground in Southern California (in).

Key
Snow depth

Average Rain and Snow by Month

Show Inches

Month Daily Chance of Rain Average Snow Depth (in) Total Precipitation (in)
Jan 9% 0 1.2
Feb 11% 0 1.1
Mar 5% 0 0.7
Apr 4% 0 0.4
May 3% 0 0.2
Jun 0% 0 0
Jul 1% 0 0.2
Aug 2% 0 0.4
Sep 1% 0 0.1
Oct 3% 0 0.2
Nov 5% 0 0.5
Dec 11% 0 2.3

Show Centimeters

Month Daily Chance of Rain Average Snow Depth (cm) Total Precipitation (cm)
Jan 9 0 3
Feb 11 0 2.8
Mar 5 0 1.8
Apr 4 0 1
May 3 0 0.5
Jun 0 0 0
Jul 1 0 0.5
Aug 2 0 1
Sep 1 0 0.3
Oct 3 0 0.5
Nov 5 0 1.3
Dec 11 0 5.8

 

Humidity and Wind

Southern California has some comfortably humid months, and slightly dry months in the opposite season. The least humid month is August (37% relative humidity), and the most humid month is February (55.3%).

Wind in Southern California is usually calm. The windiest month is May, followed by July and June. May’s average wind speed of around 5.4 knots (6.2 MPH or 10 KPH) is considered “a light breeze.” Maximum sustained winds (the highest speed for the day lasting more than a few moments) are at their highest in early May where average top sustained speeds reach 14.2 knots, which is considered a moderate breeze.

Relative Humidity (%)

The graph below shows the average % humidity by month in Southern California.

Key
Avg. Relative Humidity

Wind

The graph below shows wind speed (max and average) in knots.

Key
Max Sustained Wind
Average Daily Wind

Average Wind Speeds

Show Wind Speeds

All wind speeds are in knots. 1 knot = 1.15 MPH or 1.85 KPH.

Month Avg. Wind Avg. Wind Feel Sustained High Wind High Wind Feel
Jan 3.9 Barely noticeable 10.9 Gentle breeze
Feb 3.9 Barely noticeable 11.2 Significant breeze
Mar 4.1 Light breeze 12.1 Gentle breeze
Apr 4.9 Light breeze 13.2 Significant breeze
May 5.4 Light breeze 13.6 Gentle breeze
Jun 5.1 Light breeze 13.1 Significant breeze
Jul 5.1 Light breeze 13.3 Gentle breeze
Aug 4.7 Light breeze 13.3 Significant breeze
Sep 4.1 Light breeze 12.4 Gentle breeze
Oct 4 Light breeze 11.5 Significant breeze
Nov 3.7 Barely noticeable 10.6 Gentle breeze
Dec 3.8 Barely noticeable 10.8 Gentle breeze

Show Relative Humidity by Month

Month Avg. Relative Humidity
Jan 41.6%
Feb 55.3%
Mar 48.8%
Apr 45.5%
May 45.9%
Jun 44.4%
Jul 40.8%
Aug 37%
Sep 38.3%
Oct 42.4%
Nov 40.4%
Dec 51.6%

 

Is it Safe to Travel to Southern California?

Our best data indicates this area is generally safe. As of Dec 07, 2018 there are no travel advisories or warnings for the United States; exercise normal security precautions. Check this page for any recent changes or regions to avoid: Travel Advice and Advisories


 

The Busiest and Least Crowded Months

The busiest month for tourism in Southern California, CA, US is July, followed by September and August. Prices for hotels and flights will be most expensive during these months, though you can save if you purchase well in advance. Tourists are unlikely to visit Southern California in November. Those willing to visit at these times will likely find it the least expensive month.

Estimated Tourism by Month

 

Most Popular Months to Visit

Key
Tourists Seeking Accommodations

Tourism graph is based on Google searches for services used by tourists relative to the rest of the year. Tourism data for this area is slightly extrapolated based on nearby areas. Displayed data is calculated relative to the peak, so a score of 32.8 in November means 32.8% of the tourists vs. July.



Overall Southern California Travel Experience by Season

Spring (March through May)

Humidity and temperatures combine to make this season feel moderate. Highs range from 84.8°F (29.3°C) and 67.1°F (19.5°C) with warmer temperatures in the later months. Rain is rare with 1 to 2 days of significant precipitation per month. Spring is the second busiest for tourism, which makes it a good time for those looking for things to do.

Summer (June through August)

The middle-year months have very comfortable weather with high temperatures that are quite warm. These months see the least precipitation with 0 to 1 days of precipitation per month. June – August is the busiest season for tourism in Southern California, so lodging and other accommodations may cost more than usual.

Fall (September through November)

Fall daily highs range from 95.3°F (35.2°C) and 71.2°F (21.8°C), which will feel very nice given the humidity and wind. It rains or snows a barely noticeable amount: 0 to 1 days per month. Tourism is fairly slow during these months due to the weather, so hotels may be lower priced.

Winter (December through February)

Weather is too cold this time of year in Southern California to be enjoyable for warm weather travelers. The average high during this season is between 70°F (21.1°C) and 62.4°F (16.9°C). On average, it rains or snows a smalll amount: consistently 3 times per month. These times of year are the slowest with tourists.

 

Best Times to Travelthe United States › Southern California, CA, US


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