Rancho Bernardo (CA) Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Rancho Bernardo.
Climate overview of Rancho Bernardo
Rancho Bernardo, California, United States of America, sees big temperature differences between seasons, with August peaking at 31°C (88°F) and December dropping to 19°C (66°F).
Rainfall is modest, totalling around 295 mm (12 in) annually. The city experiences a distinct dry season from March to November, with very warm summers and pleasant winters. December tends to be the wettest month. July is the sunniest month, averaging 10.1 hours of sunshine per day.
Rancho Bernardo Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Rancho Bernardo - and find the best time to visit.
Monthly Temperature in Rancho Bernardo
Visitors to Rancho Bernardo can expect significant temperature changes throughout the year. Average maximum daytime temperatures range from a very warm 31°C (88°F) in August, the warmest time of the year, to a pleasant 19°C (66°F) during cooler months like December.
At night, you can expect temperatures ranging from 17°C (63°F) in August to around 6°C (43°F) during December.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Rancho Bernardo
Rancho Bernardo typically sees modest rainfall throughout the year, with an average annual precipitation of 295 mm (12 in). Significant seasonal changes in precipitation occur throughout the year. In the wettest month, December it receives moderate rainfall, averaging 79 mm (3.1 in) of precipitation, recorded across 8 rainy days. In contrast, the driest month June brings less rainfall, with 0.5 mm (0.02 in) over 0 rainy days. For more details, please visit our Rancho Bernardo Precipitation page.
The mean monthly precipitation over the year, including rain, hail, and snow
The average number of days each month with precipitation
Sunshine Hours in Rancho Bernardo
While the amount of sunshine in Rancho Bernardo varies throughout the year, all seasons offer their own charm. Enjoy up to 10.1 hours of daily sun in July, and experience slightly darker atmosphere in February, with about 7.7 hours of daily sunlight.
Visit our detailed sunshine hours page for more information.
Monthly hours of sunshine
Daily hours of sunshine
Daily percentage of sunshine
Humidity in Rancho Bernardo by Month
The relative humidity is high throughout the year in Rancho Bernardo.
The city experiences its highest humidity in July, reaching 75%. In January, the humidity drops to its lowest level at 64%. What does this mean? Read our detailed page on humidity levels for further details.
Relative humidity over the year
Best Time to Visit Rancho Bernardo
Monthly ratings reflect general weather comfort, based on daytime temperature and rainfall. Swimming and winter conditions are highlighted separately where relevant.
- Best overall: January, February, March, April, May, June, October and November
- Warmest weather: July, August and September
- Most sunshine: July and August
- Fewest rainy days: June, July, August and September
- Seasonal pattern: A distinct dry season from March to November, with very warm summers and pleasant winters
Frequently asked questions about the climate in Rancho Bernardo
What is the best time to visit Rancho Bernardo?
January, February, March, April, May, June, October and November typically offer the most optimal weather in Rancho Bernardo. In contrast, July, August, September and December tend to have less optimal conditions. Rancho Bernardo has a distinct dry season from March to November, with very warm summers and pleasant winters.
What temperatures can I expect in Rancho Bernardo?
Daytime highs range from 19°C (66°F) in December to 31°C (88°F) in August. Nighttime lows range from 6°C (43°F) to 17°C (63°F). Temperatures vary considerably through the year.
How much rain does Rancho Bernardo get?
Annual rainfall is around 295 mm (12 in). December is the wettest month with 79 mm (3.1 in), while June is the driest with 0.5 mm (0.02 in).
How sunny is Rancho Bernardo?
Rancho Bernardo receives around 3,069 hours of sunshine per year. July is the sunniest month with 304 hours, while February is the cloudiest with just 230 hours. Overall, Rancho Bernardo enjoys abundant sunshine.
Rancho Bernardo 3-Day Forecast
Rancho Bernardo (CA) 3-Day Forecast
Rancho Bernardo on the map
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