August Weather in Castroville, United States

Last updated: June 24, 2025

In August, the average temperature in Castroville, United States rises to a warm 31°C (87°F), with temperatures ranging from a minimum of 20°C (68°F) to a scorching maximum of 40°C (105°F). Expect moderate precipitation of 40 mm (1.6 in) spread over about 5 days, and enjoy the atmosphere with an average humidity level of 58%.

August Temperature in Castroville

In August in Castroville, the average temperature is 31°C (87°F), with maximums reaching 40°C (105°F) and minimums dropping to as low as 20°C (68°F). Be prepared for warm weather and stay hydrated while exploring the area!

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

The chart illustrates August temperature patterns in Castroville, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Castroville, August typically has an average temperature of 31°C (87°F), with highs reaching up to 40°C (105°F) and lows dropping to around 20°C (68°F).

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

August Precipitation in Castroville

In Castroville in August, the precipitation amount is 40 mm (1.6 in) over the course of 5 days.

August Precipitation Trends in Castroville

The chart displays monthly precipitation patterns in Castroville, 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 Castroville, August typically receives around 40 mm (1.6 inches) of precipitation spread over approximately 5 days.

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

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Millimeters (mm) Inches (in)

August Humidity in Castroville

In Castroville in August, humidity is 58%. With an average temperature of 31°C (87°F), this humidity feels like walking through a warm, misty atmosphere, which can be both refreshing and mildly oppressive for traveling, making hydration essential and comfortable clothing a must.

August Average Humidity in Castroville

This chart illustrates the average monthly humidity levels in Castroville, 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 Castroville is approximately 58%, 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 Castroville

In Castroville 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 Castroville.

Maximum UV Index Levels in Castroville for August

The chart shows the monthly maximum UV Index (UVI) for Castroville 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 Castroville typically reaches 12, which falls under the extreme exposure category.

Data source: Castroville 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 Castroville Compares to Other Months

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

This table compares monthly weather conditions in Castroville, showing how August’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	12°C (54°F)	34 mm (1.3 inches)	79%	moderate
February Weather	13°C (57°F)	47 mm (1.8 inches)	79%	very high
March Weather	19°C (66°F)	50 mm (2.0 inches)	74%	very high
April Weather	22°C (72°F)	61 mm (2.4 inches)	76%	extreme
May Weather	26°C (79°F)	109 mm (4.3 inches)	81%	extreme
June Weather	29°C (84°F)	58 mm (2.3 inches)	76%	extreme
July Weather	30°C (86°F)	52 mm (2.0 inches)	66%	extreme
August Weather	31°C (87°F)	40 mm (1.6 inches)	58%	extreme
September Weather	28°C (82°F)	106 mm (4.2 inches)	65%	extreme
October Weather	23°C (73°F)	69 mm (2.7 inches)	74%	very high
November Weather	17°C (62°F)	40 mm (1.6 inches)	81%	high
December Weather	14°C (57°F)	46 mm (1.8 inches)	86%	moderate