La Mesa (CA) Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit La Mesa.
Climate overview of La Mesa
La Mesa, California, United States of America, has a moderate seasonal temperature range, with September reaching 30°C (86°F) and December cooling to 19°C (66°F).
The city tends toward dry conditions, with around 276 mm (11 in) of rainfall per year. It does, however, have a distinct dry season from March to November, with warm summers and pleasant winters. The sunniest month is July, with 10.1 hours of sunshine per day on average.
La Mesa Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in La Mesa - and find the best time to visit.
Monthly Temperature in La Mesa
In La Mesa, seasonal changes bring about a moderate variation in temperatures. Typically, average maximum daytime temperatures range from a comfortable 30°C (86°F) in September to a pleasant 19°C (66°F) in the coolest month, December.
Nights vary from 18°C (64°F) in September to around 7°C (45°F) during the colder months.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in La Mesa
La Mesa typically sees modest rainfall throughout the year, with an average annual precipitation of 276 mm (11 in). The climate in La Mesa shows significant variation throughout the year. Expect moderate rainfall in December, the wettest month, with an average of 74 mm (2.9 in) of precipitation over 9 rainy days.
In contrast, the driest month June offers drier and sunnier days, with around 0.4 mm (0.02 in) of rainfall over 0 rainy days. For more details, please visit our La 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 La Mesa
La Mesa offers a pleasant mix of sunny and slightly overcast days. The difference in sunshine hours between July (10.1 hours daily) and February (7.7 hours daily) provides a bit of variety for visitors and residents.
Visit our detailed sunshine hours page for more information.
Monthly hours of sunshine
Daily hours of sunshine
Daily percentage of sunshine
Humidity in La Mesa by Month
The relative humidity is high throughout the year in La Mesa.
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 La 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, 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 warm summers and pleasant winters
Frequently asked questions about the climate in La Mesa
What is the best time to visit La Mesa?
January, February, March, April, May, June, July, August, October and November typically offer the most optimal weather in La Mesa. In contrast, September and December tend to have less optimal conditions. La Mesa has a distinct dry season from March to November, with warm summers and pleasant winters.
What temperatures can I expect in La Mesa?
Daytime highs range from 19°C (66°F) in December to 30°C (86°F) in September. Nighttime lows range from 7°C (45°F) to 18°C (64°F).
How much rain does La Mesa get?
Annual rainfall is around 276 mm (11 in). December is the wettest month with 74 mm (2.9 in), while June is the driest with 0.4 mm (0.02 in).
How sunny is La Mesa?
La Mesa 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, La Mesa enjoys abundant sunshine.
La Mesa 3-Day Forecast
La Mesa (CA) 3-Day Forecast
La Mesa on the map
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