Otay Mesa (CA) Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Otay Mesa.
Climate overview of Otay Mesa
Otay Mesa, California, United States of America, experiences moderate temperature changes through the seasons. September is the warmest month with daytime highs of 27°C (81°F), while December is the coolest at 19°C (66°F).
Rainfall is extremely rare, with only 234 mm (9.2 in) falling across the entire year. The most sunshine falls in July, with an average of 10.4 hours of daily sunshine.
Otay Mesa Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Otay Mesa - and find the best time to visit.
Monthly Temperature in Otay Mesa
In Otay Mesa, seasonal changes bring about a moderate variation in temperatures. Average maximum daytime temperatures range from a comfortable 27°C (81°F) in September, 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 18°C (64°F) in September to around 8°C (46°F) during December.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Otay Mesa
Otay Mesa has a dry climate with very low precipitation, averaging 234 mm (9.2 in) of rainfall annually. Significant seasonal changes in precipitation occur throughout the year. In the wettest month, December it receives moderate rainfall, averaging 61 mm (2.4 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 Otay Mesa 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 Otay Mesa
While the amount of sunshine in Otay Mesa varies throughout the year, all seasons offer their own charm. Enjoy up to 10.4 hours of daily sun in July, and experience slightly darker atmosphere in January, with about 7.3 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 Otay Mesa by Month
The relative humidity is high throughout the year in Otay Mesa.
The city experiences its highest humidity in July, reaching 80%. In November, the humidity drops to its lowest level at 69%. What does this mean? Read our detailed page on humidity levels for further details.
Relative humidity over the year
Best Time to Visit Otay Mesa
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, July, August, September, October and November
- Warmest weather: July, August and September
- Most sunshine: July
- Fewer rainy days: May, June, July, August and September
- Seasonal pattern: Very little rainfall for most of the year
Frequently asked questions about the climate in Otay Mesa
What is the best time to visit Otay Mesa?
January, February, March, April, May, June, July, August, September, October and November typically offer the most optimal weather in Otay Mesa. In contrast, December tends to have less optimal conditions. Otay Mesa has very little rainfall for most of the year.
What temperatures can I expect in Otay Mesa?
Daytime highs range from 19°C (66°F) in December to 27°C (81°F) in September. Nighttime lows range from 8°C (46°F) to 18°C (64°F).
How much rain does Otay Mesa get?
Annual rainfall is around 234 mm (9.2 in). December is the wettest month with 61 mm (2.4 in), while June is the driest with 0.5 mm (0.02 in).
How sunny is Otay Mesa?
Otay Mesa receives around 3,037 hours of sunshine per year. July is the sunniest month with 312 hours, while January is the cloudiest with just 219 hours. Overall, Otay Mesa enjoys abundant sunshine.
Otay Mesa 3-Day Forecast
Otay Mesa (CA) 3-Day Forecast
Otay Mesa on the map
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