The best times to visit South Bay for ideal weather are

March 19th to November 11th

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

 

 


Other South Bay Travel Info

Weather in South Bay

Temperature

Average temperatures in South Bay vary somewhat. Considering humidity, temperatures feel nice most of the year, excluding some cold weeks in the winter, with a very low chance of rain or snow throughout the year. The area is more temperate than most — in the 77th 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 South Bay, the hottest months are August, September, and then July. See average monthly temperatures below. The warmest time of year is generally late August to early September where highs are regularly around 84.8°F (29.3°C) with temperatures rarely dropping below 64.1°F (17.8°C) at night.

South Bay Temperatures (Fahrenheit)

Key
High
Average
Low

South Bay 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.

South Bay Perceived Temperature (F)

Key
High
Average
Low

South Bay Perceived Temperature (C)

Key
High
Average
Low

 

Average South Bay 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 68.8 55.6 43.9
Feb 67 54.9 44.7
Mar 70.1 57.6 47.5
Apr 70.9 59.4 50
May 72.2 62.1 54.3
Jun 74.3 64.5 57.7
Jul 78.2 68.3 61.8
Aug 80.6 70.2 62.9
Sep 81.4 69.9 61.6
Oct 78.3 65.9 55.9
Nov 73.4 60.4 49.4
Dec 66.3 54.4 44.3

Show Celsius

Month Avg. High (°C) Avg. Mean (°C) Avg. Low (°C)
Jan 20.4 13.1 6.6
Feb 19.4 12.7 7.1
Mar 21.2 14.2 8.6
Apr 21.6 15.2 10
May 22.3 16.7 12.4
Jun 23.5 18.1 14.3
Jul 25.7 20.2 16.6
Aug 27 21.2 17.2
Sep 27.4 21.1 16.4
Oct 25.7 18.8 13.3
Nov 23 15.8 9.7
Dec 19.1 12.4 6.8

 


 

Precipitation (Rain or Snow)

If dry weather is what you’re after, the months with the lowest chance of significant precipitation in South Bay are August, July, and then June. 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 mid February with an average of 1 days of significant precipitation the week of February 19th.

When can you find snow in South Bay? 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.

Chance of Precipitation

The graph below shows the % chance of rainy and snowy days in South Bay.

Key
Days with precipitation

Snow on the Ground

The graph below shows the average snow on the ground in South Bay (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 14% 0 1.7
Mar 8% 0 1
Apr 7% 0 0.6
May 2% 0 0.2
Jun 0% 0 0
Jul 0% 0 0.1
Aug 0% 0 0
Sep 1% 0 0.1
Oct 4% 0 0.5
Nov 8% 0 1
Dec 14% 0 2.2

Show Centimeters

Month Daily Chance of Rain Average Snow Depth (cm) Total Precipitation (cm)
Jan 9 0 3
Feb 14 0 4.3
Mar 8 0 2.5
Apr 7 0 1.5
May 2 0 0.5
Jun 0 0 0
Jul 0 0 0.3
Aug 0 0 0
Sep 1 0 0.3
Oct 4 0 1.3
Nov 8 0 2.5
Dec 14 0 5.6

 

Humidity and Wind

South Bay has some slightly muggy months, with moderately humid months on the other side of the year. The least humid month is January (45.5% relative humidity), and the most humid month is July (68.6%).

Wind in South Bay is usually calm. The windiest month is April, followed by May and February. April’s average wind speed of around 4.7 knots (5.4 MPH or 8.8 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 late May where average top sustained speeds reach 11.6 knots, which is considered a moderate breeze.

Relative Humidity (%)

The graph below shows the average % humidity by month in South Bay.

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 4.5 Light breeze 10.4 Gentle breeze
Feb 4.6 Light breeze 10.6 Gentle breeze
Mar 4.3 Light breeze 10.5 Gentle breeze
Apr 4.7 Light breeze 11.2 Significant breeze
May 4.7 Light breeze 11.1 Gentle breeze
Jun 4 Light breeze 10.1 Gentle breeze
Jul 3.8 Barely noticeable 9.5 Gentle breeze
Aug 3.6 Barely noticeable 9.5 Gentle breeze
Sep 3.4 Barely noticeable 9.8 Gentle breeze
Oct 3.7 Barely noticeable 9.7 Gentle breeze
Nov 4.1 Light breeze 9.9 Gentle breeze
Dec 4.5 Light breeze 10.3 Gentle breeze

Show Relative Humidity by Month

Month Avg. Relative Humidity
Jan 45.5%
Feb 57.9%
Mar 58%
Apr 57.8%
May 61.7%
Jun 67%
Jul 68.6%
Aug 66.4%
Sep 65.3%
Oct 55.7%
Nov 50.2%
Dec 54.6%

 

Is it Safe to Travel to South Bay?

Our best data indicates this area is generally safe. As of Oct 07, 2019 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. This advisory was last updated on Sep 23, 2019.


 

The Busiest and Least Crowded Months

The busiest month for tourism in South Bay, CA, US is July, followed by June and May. 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 South Bay 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 somewhat extrapolated based on nearby areas. Displayed data is calculated relative to the peak, so a score of 34.9 in November means 34.9% of the tourists vs. July.

 

 

Overall South Bay Travel Experience by Season

Spring (March through May)

Humidity and temperatures combine to make this season feel moderate. Highs range from 74.9°F (23.8°C) and 67.6°F (19.8°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 comfortable. These months see the least precipitation with about 0 days of precipitation per month. June – August is the busiest season for tourism in South Bay, so lodging and other accommodations may cost more than usual.

Fall (September through November)

Fall daily highs range from 83.4°F (28.6°C) and 70.1°F (21.2°C), which will feel very nice given the humidity and wind. It rains or snows a normal amount: 0 to 2 days per month. Tourism is the slowest during these months due to the weather, so hotels may be affordably priced.

Winter (December through February)

Weather is too cold this time of year in South Bay to be enjoyable for warm weather travelers. The average high during this season is between 70.7°F (21.5°C) and 64.7°F (18.2°C). On average, it rains or snows a smalll amount: 3 to 4 times per month. These times of year are fairly slow with tourists.

 

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