The best times to visit San Luis Obispo for ideal weather are

April 16th to November 4th

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



Other San Luis Obispo Travel Info

Weather in San Luis Obispo


Average temperatures in San Luis Obispo 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 63rd 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 San Luis Obispo, the hottest months are September, August, 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 55.8°F (13.2°C) at night.

San Luis Obispo Temperatures (Fahrenheit)


San Luis Obispo Temperatures (Celsius)


“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.

San Luis Obispo Perceived Temperature (F)


San Luis Obispo Perceived Temperature (C)



Average San Luis Obispo 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 68.2 52.4 40.8
Feb 66.3 53 43.1
Mar 69.6 55.2 45
Apr 71 56.3 46.2
May 73.1 58.6 48.6
Jun 76.1 61.4 52
Jul 78.1 63.7 55.2
Aug 79.8 64.3 55.4
Sep 81.3 64.8 54.7
Oct 79.3 62.9 52.1
Nov 72.9 56.9 45.3
Dec 65.2 51.7 41.1

Show Celsius

Month Avg. High (°C) Avg. Mean (°C) Avg. Low (°C)
Jan 20.1 11.3 4.9
Feb 19.1 11.7 6.2
Mar 20.9 12.9 7.2
Apr 21.7 13.5 7.9
May 22.8 14.8 9.2
Jun 24.5 16.3 11.1
Jul 25.6 17.6 12.9
Aug 26.6 17.9 13
Sep 27.4 18.2 12.6
Oct 26.3 17.2 11.2
Nov 22.7 13.8 7.4
Dec 18.4 10.9 5.1



Precipitation (Rain or Snow)

If dry weather is what you’re after, the months with the lowest chance of significant precipitation in San Luis Obispo are August, September, and then July. Note that we define “significant precipitation” as .1 inches or more in this section. The lowest chance of rain or snow occurs around early to mid May. For example, on the week of May 7th there are no days of precipitation on average. By contrast, it’s most likely to rain or snow in mid December with an average of 2 days of significant precipitation the week of December 17th.

When can you find snow in San Luis Obispo? 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 San Luis Obispo.

Days with precipitation

Snow on the Ground

The graph below shows the average snow on the ground in San Luis Obispo (in).

Snow depth

Average Rain and Snow by Month

Show Inches

Month Daily Chance of Rain Average Snow Depth (in) Total Precipitation (in)
Jan 11% 0 2.8
Feb 19% 0 2.3
Mar 11% 0 1.8
Apr 9% 0 1
May 2% 0 0.2
Jun 1% 0 0.1
Jul 0% 0 0.1
Aug 0% 0 0
Sep 0% 0 0
Oct 6% 0 1
Nov 9% 0 1.2
Dec 19% 0 3.6

Show Centimeters

Month Daily Chance of Rain Average Snow Depth (cm) Total Precipitation (cm)
Jan 11 0 7.1
Feb 19 0 5.8
Mar 11 0 4.6
Apr 9 0 2.5
May 2 0 0.5
Jun 1 0 0.3
Jul 0 0 0.3
Aug 0 0 0
Sep 0 0 0
Oct 6 0 2.5
Nov 9 0 3
Dec 19 0 9.1


Humidity and Wind

San Luis Obispo has some high humidity months, with other comfortably humid months. The least humid month is January (53.8% relative humidity), and the most humid month is July (63.7%).

Wind in San Luis Obispo is usually calm. The windiest month is May, followed by April and June. May’s average wind speed of around 7.5 knots (8.6 MPH or 13.8 KPH) is considered “a gentle breeze.” Maximum sustained winds (the highest speed for the day lasting more than a few moments) are at their highest in early to mid April where average top sustained speeds reach 18.4 knots, which is considered a fresh breeze.

Relative Humidity (%)

The graph below shows the average % humidity by month in San Luis Obispo.

Avg. Relative Humidity


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

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 4.1 Light breeze 12.3 Significant breeze
Feb 4.9 Light breeze 13.9 Significant breeze
Mar 5.9 Light breeze 16.1 Significant breeze
Apr 7.3 Gentle breeze 17.7 Strong breeze
May 7.5 Gentle breeze 17.4 Significant breeze
Jun 6.8 Light breeze 16.2 Significant breeze
Jul 6 Light breeze 14.3 Significant breeze
Aug 6 Light breeze 14.9 Significant breeze
Sep 5.6 Light breeze 14.8 Significant breeze
Oct 5.2 Light breeze 15.1 Significant breeze
Nov 4.1 Light breeze 12.6 Significant breeze
Dec 4.2 Light breeze 12.5 Significant breeze

Show Relative Humidity by Month

Month Avg. Relative Humidity
Jan 53.8%
Feb 63.6%
Mar 60.8%
Apr 59%
May 59.1%
Jun 61.4%
Jul 63.7%
Aug 62.6%
Sep 58.9%
Oct 55.3%
Nov 55.2%
Dec 58.9%


Is it Safe to Travel to San Luis Obispo?

Our best data indicates this area is generally safe. As of Dec 04, 2023 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 Dec 04, 2023.


The Busiest and Least Crowded Months

The busiest month for tourism in San Luis Obispo, CA, US is February, followed by July and June. 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 San Luis Obispo in January. Those willing to visit at these times will likely find it the least expensive month.

Estimated Tourism by Month


Most Popular Months to Visit

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 extrapolated based on nearby areas. Displayed data is calculated relative to the peak, so a score of 56.8 in January means 56.8% of the tourists vs. February.



Overall San Luis Obispo Travel Experience by Season

Spring (March through May)

Humidity and temperatures combine to make this season feel moderate. Highs range from 75°F (23.9°C) and 66°F (18.9°C) with warmer temperatures in the later months. Rain is rare with 1 to 3 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 comfortably cool 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 San Luis Obispo, so lodging and other accommodations may cost more than usual.

Fall (September through November)

Fall daily highs range from 83.9°F (28.8°C) and 70.4°F (21.3°C), which will feel comfortable given the humidity and wind. It rains or snows a normal amount: 0 to 3 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 San Luis Obispo to be enjoyable for warm weather travelers. The average high during this season is between 70.2°F (21.2°C) and 63.7°F (17.6°C). On average, it rains or snows a fair amount: 3 to 6 times per month. These times of year are the slowest with tourists.


Best Times to Travelthe United States › San Luis Obispo, CA, US