The best times to visit Rancho Bernardo 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 Rancho Bernardo Travel Info

Weather in Rancho Bernardo


Average temperatures in Rancho Bernardo vary greatly. Considering humidity, temperatures feel cold for about half of the year and otherwise nice with a very low chance of rain or snow throughout the year. The area is somewhat temperate — in the 51st 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 Rancho Bernardo, 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 94.8°F (34.9°C) with temperatures rarely dropping below 59.7°F (15.4°C) at night.

Rancho Bernardo Temperatures (Fahrenheit)


Rancho Bernardo 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.

Rancho Bernardo Perceived Temperature (F)


Rancho Bernardo Perceived Temperature (C)



Average Rancho Bernardo 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 68.5 51.3 35.9
Feb 66.8 50.6 36.7
Mar 71 54 39
Apr 73.1 56.5 41.8
May 77.1 60.8 47.4
Jun 84 65.9 50.6
Jul 88.5 71.2 56.6
Aug 91.4 73.1 57.4
Sep 90.1 71.1 55.1
Oct 81.7 63.3 47.9
Nov 73.9 55.9 40.3
Dec 64.9 49.4 35.9

Show Celsius

Month Avg. High (°C) Avg. Mean (°C) Avg. Low (°C)
Jan 20.3 10.7 2.2
Feb 19.3 10.3 2.6
Mar 21.7 12.2 3.9
Apr 22.8 13.6 5.4
May 25.1 16 8.6
Jun 28.9 18.8 10.3
Jul 31.4 21.8 13.7
Aug 33 22.8 14.1
Sep 32.3 21.7 12.8
Oct 27.6 17.4 8.8
Nov 23.3 13.3 4.6
Dec 18.3 9.7 2.2



Precipitation (Rain or Snow)

If dry weather is what you’re after, the months with the lowest chance of significant precipitation in Rancho Bernardo are June, August, 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 June. For example, on the week of June 4th 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 Rancho Bernardo? 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 Rancho Bernardo.

Days with precipitation

Snow on the Ground

The graph below shows the average snow on the ground in Rancho Bernardo (in).

Snow depth

Average Rain and Snow by Month

Show Inches

Month Daily Chance of Rain Average Snow Depth (in) Total Precipitation (in)
Jan 10% 0 2
Feb 17% 0 2.6
Mar 8% 0 1.3
Apr 7% 0 0.8
May 4% 0 0.4
Jun 0% 0 0
Jul 1% 0 0.4
Aug 0% 0 0.1
Sep 1% 0 0.2
Oct 5% 0 0.8
Nov 10% 0 1.3
Dec 15% 0 3.6

Show Centimeters

Month Daily Chance of Rain Average Snow Depth (cm) Total Precipitation (cm)
Jan 10 0 5.1
Feb 17 0 6.6
Mar 8 0 3.3
Apr 7 0 2
May 4 0 1
Jun 0 0 0
Jul 1 0 1
Aug 0 0 0.3
Sep 1 0 0.5
Oct 5 0 2
Nov 10 0 3.3
Dec 15 0 9.1


Humidity and Wind

Rancho Bernardo has some comfortably humid months, with slightly drier months on the other side of the year. The least humid month is January (43.5% relative humidity), and the most humid month is February (56.4%).

Wind in Rancho Bernardo is usually calm. The windiest month is May, followed by July and April. May’s average wind speed of around 4.5 knots (5.2 MPH or 8.4 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 February and early March where average top sustained speeds reach 14.1 knots, which is considered a moderate breeze.

Relative Humidity (%)

The graph below shows the average % humidity by month in Rancho Bernardo.

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 4.2 Light breeze 11.6 Significant breeze
Feb 4 Light breeze 11.7 Significant breeze
Mar 4.1 Light breeze 12.3 Significant breeze
Apr 4.4 Light breeze 12.5 Significant breeze
May 4.5 Light breeze 11.7 Significant breeze
Jun 4.3 Light breeze 11 Significant breeze
Jul 4.5 Light breeze 11.1 Significant breeze
Aug 4.2 Light breeze 11.3 Significant breeze
Sep 3.9 Barely noticeable 11.5 Significant breeze
Oct 3.8 Barely noticeable 11.8 Significant breeze
Nov 3.9 Barely noticeable 11.7 Significant breeze
Dec 3.9 Barely noticeable 11.6 Significant breeze

Show Relative Humidity by Month

Month Avg. Relative Humidity
Jan 43.5%
Feb 56.4%
Mar 55.5%
Apr 55.1%
May 55.3%
Jun 53%
Jul 52.2%
Aug 47.2%
Sep 45.7%
Oct 47%
Nov 45.7%
Dec 54.2%


Is it Safe to Travel to Rancho Bernardo?

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 Rancho Bernardo, 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 Rancho Bernardo 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

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 34.9 in November means 34.9% of the tourists vs. July.



Overall Rancho Bernardo Travel Experience by Season

Spring (March through May)

Humidity and temperatures combine to make this season feel moderate. Highs range from 79.7°F (26.5°C) and 66.4°F (19.1°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 about 0 days of precipitation per month. June – August is the busiest season for tourism in Rancho Bernardo, so lodging and other accommodations may cost more than usual.

Fall (September through November)

Fall daily highs range from 92.5°F (33.6°C) and 70.9°F (21.6°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 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 Rancho Bernardo to be enjoyable for warm weather travelers. The average high during this season is between 70°F (21.1°C) and 62.8°F (17.1°C). On average, it rains or snows a fair amount: 3 to 5 times per month. These times of year are fairly slow with tourists.


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