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August Weather in Catalina, United States

Last updated: June 24, 2025

In August, the average temperature in Catalina, United States reaches a warm 29°C (85°F). While you can expect a comfortable minimum of 20°C (67°F), temperatures can soar up to a sweltering 41°C (107°F). With an average precipitation of 63 mm (2.5 in) falling over 13 days, and humidity hovering around 48%, it's wise to stay prepared for both heat and occasional rain.

August Temperature in Catalina

In August, in Catalina, the average temperature is 29°C (85°F). Maximums can reach 41°C (107°F), and minimums can be as low as 20°C (67°F). It's advisable to pack light, breathable clothing and stay hydrated while exploring this warm destination.

August Weather in Catalina: Daily Temperature Highs, Lows, and Averages

The chart illustrates August temperature patterns in Catalina, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Catalina, August typically has an average temperature of 29°C (85°F), with highs reaching up to 41°C (107°F) and lows dropping to around 20°C (67°F).
JanFebMarAprMayJunJulAugSepOctNovDec515360697686868581716252
Data source: Temperature data for Catalina generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

August Precipitation in Catalina

In Catalina in August, the precipitation amount is 63 mm (2.5 in) spread over 13 days.

August Precipitation Trends in Catalina

The chart displays monthly precipitation patterns in Catalina, 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 Catalina, August typically receives around 63 mm (2.5 inches) of precipitation spread over approximately 13 days.
JanFebMarAprMayJunJulAugSepOctNovDec344222359966334122131
Data source: Precipitation data for August generated using information from the Copernicus Climate Change Service.
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August Humidity in Catalina

In Catalina in August humidity is 48%. With an average temperature of 29°C (85°F), this humidity feels like a warm embrace, making it comfortable for travelers who enjoy a balance of heat without excessive stickiness.

August Average Humidity in Catalina

This chart illustrates the average monthly humidity levels in Catalina, 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 Catalina is approximately 48%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec76%79%67%55%40%33%34%48%64%67%77%82%
Data source: Humidity data for August generated using information from the Copernicus Climate Change Service.

August UV Index in Catalina

In Catalina in August, the maximum UV index reaches 11, which corresponds to an extreme Exposure Category. With a time to burn of just 10 minutes, it's essential to take precautions. For more details, you can check the Hourly UV Index in Catalina.

Maximum UV Index Levels in Catalina for August

The chart shows the monthly maximum UV Index (UVI) for Catalina 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 Catalina typically reaches 11, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec579111212121111864
Data source: Catalina 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 Catalina Compares to Other Months

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

This table compares monthly weather conditions in Catalina, showing how August’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather10°C (51°F)34 mm (1.3 inches)76%moderate
February Weather12°C (53°F)42 mm (1.7 inches)79%high
March Weather15°C (60°F)22 mm (0.9 inches)67%very high
April Weather21°C (69°F)3 mm (0.1 inches)55%extreme
May Weather24°C (76°F)5 mm (0.2 inches)40%extreme
June Weather30°C (86°F)9 mm (0.3 inches)33%extreme
July Weather30°C (86°F)96 mm (3.8 inches)34%extreme
August Weather29°C (85°F)63 mm (2.5 inches)48%extreme
September Weather27°C (81°F)34 mm (1.3 inches)64%extreme
October Weather22°C (71°F)12 mm (0.5 inches)67%very high
November Weather17°C (62°F)21 mm (0.8 inches)77%high
December Weather11°C (52°F)31 mm (1.2 inches)82%moderate

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