August Weather in La Mesa, United States

Last updated: June 24, 2025

In La Mesa, United States, the average temperature in August hovers around 28°C (83°F), providing a warm climate that's perfect for outdoor activities. Temperatures may dip as low as 18°C (64°F) but can soar to a sizzling 40°C (104°F). Expect about 34 mm (1.4 in) of precipitation over 6 days, contributing to an average humidity of 63%—making it a typical month filled with heat and occasional moisture.

August Temperature in La Mesa

In August in La Mesa, the average temperature is 28°C (83°F). Maximums can reach 40°C (104°F), while minimums can drop as low as 18°C (64°F). This climate makes La Mesa an ideal destination for travelers seeking warm weather and outdoor activities.

August Weather in La Mesa: Daily Temperature Highs, Lows, and Averages

The chart illustrates August temperature patterns in La Mesa, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In La Mesa, August typically has an average temperature of 28°C (83°F), with highs reaching up to 40°C (104°F) and lows dropping to around 18°C (64°F).

Data source: Temperature data for La Mesa generated using information from the Copernicus Climate Change Service.

August Precipitation in La Mesa

In La Mesa in August, the total precipitation amount is 34 mm (1.4 in) spread over a period of 6 days.

August Precipitation Trends in La Mesa

The chart displays monthly precipitation patterns in La Mesa, with values for each month alongside August’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how August’s conditions compare to those of other months. In La Mesa, August typically receives around 34 mm (1.4 inches) of precipitation spread over approximately 6 days.

Data source: Precipitation data for August generated using information from the Copernicus Climate Change Service.

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

August Humidity in La Mesa

In La Mesa in August humidity is 63%. With an average temperature of 28°C (83°F), this humidity feels like a warm embrace that clings to your skin, making outdoor activities a bit more strenuous and encouraging you to seek shade and hydration while exploring the sights.

August Average Humidity in La Mesa

This chart illustrates the average monthly humidity levels in La Mesa, with August’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In August, average humidity in La Mesa is approximately 63%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for August generated using information from the Copernicus Climate Change Service.

August UV Index in La Mesa

In La Mesa in August, the maximum UV index is 12, which corresponds to an extreme Exposure Category. The time to burn is just 10 minutes, underscoring the importance of sun protection. For detailed information, you can check the Hourly UV Index in La Mesa.

Maximum UV Index Levels in La Mesa for August

The chart shows the monthly maximum UV Index (UVI) for La Mesa in August, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In August, the maximum UV index in La Mesa typically reaches 12, which falls under the extreme exposure category.

Data source: La Mesa August UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

Extreme (11+): Avoid the sun, stay in shade.
Very High (8-10): Limit sun exposure.
High (6-7): Use SPF 30+ and protective clothing.
Moderate (3-5): Midday shade recommended.
Low (0-2): No protection needed.

How August Weather in La Mesa Compares to Other Months

Weather in La Mesa varies notably across the year, with each month offering distinct climate conditions. This page compares August’s weather to other months in La Mesa, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in La Mesa, showing how August’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	7°C (45°F)	12 mm (0.5 inches)	81%	moderate
February Weather	10°C (51°F)	13 mm (0.5 inches)	77%	high
March Weather	15°C (59°F)	17 mm (0.7 inches)	65%	very high
April Weather	20°C (68°F)	4 mm (0.1 inches)	53%	extreme
May Weather	24°C (76°F)	4 mm (0.1 inches)	51%	extreme
June Weather	29°C (84°F)	26 mm (1.0 inches)	51%	extreme
July Weather	29°C (84°F)	34 mm (1.4 inches)	60%	extreme
August Weather	28°C (83°F)	34 mm (1.4 inches)	63%	extreme
September Weather	25°C (77°F)	30 mm (1.2 inches)	74%	extreme
October Weather	19°C (67°F)	22 mm (0.9 inches)	75%	very high
November Weather	13°C (56°F)	14 mm (0.6 inches)	82%	high
December Weather	8°C (47°F)	15 mm (0.6 inches)	87%	moderate