August Weather in Portola, United States

Last updated: June 24, 2025

In August, the average temperature in Portola, United States is a pleasant 20°C (68°F). You can expect temperatures to range from a cool 6°C (43°F) to a warm 35°C (94°F). With an average precipitation of only 13 mm (0.5 in) over the course of 4 days, it's likely to be a relatively dry month. The air will be comfortably crisp, with average humidity around 36%.

August Temperature in Portola

In August in Portola, the average temperature is 20°C (68°F). The maximum can reach 35°C (94°F) and the minimum can be as low as 6°C (43°F). This makes it a great time for travelers to enjoy a variety of outdoor activities while being prepared for both warm days and cooler evenings.

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

The chart illustrates August temperature patterns in Portola, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Portola, August typically has an average temperature of 20°C (68°F), with highs reaching up to 35°C (94°F) and lows dropping to around 6°C (43°F).

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

August Precipitation in Portola

In Portola in August, the precipitation amount is 13 mm (0.5 in) over a span of 4 days.

August Precipitation Trends in Portola

The chart displays monthly precipitation patterns in Portola, 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 Portola, August typically receives around 13 mm (0.5 inches) of precipitation spread over approximately 4 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 Portola

In Portola in August humidity is 36%. With an average temperature of 20°C (68°F), this humidity feels like a refreshing embrace, making it comfortable for traveling and exploring the surroundings without feeling overheated.

August Average Humidity in Portola

This chart illustrates the average monthly humidity levels in Portola, 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 Portola is approximately 36%, 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 Portola

In Portola 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 Portola.

Maximum UV Index Levels in Portola for August

The chart shows the monthly maximum UV Index (UVI) for Portola 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 Portola typically reaches 11, which falls under the extreme exposure category.

Data source: Portola 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 Portola Compares to Other Months

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

This table compares monthly weather conditions in Portola, showing how August’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-1°C (31°F)	170 mm (6.7 inches)	84%	moderate
February Weather	-1°C (30°F)	177 mm (7.0 inches)	84%	high
March Weather	1°C (34°F)	146 mm (5.7 inches)	83%	very high
April Weather	5°C (41°F)	72 mm (2.8 inches)	81%	very high
May Weather	10°C (51°F)	60 mm (2.3 inches)	74%	extreme
June Weather	16°C (62°F)	10 mm (0.4 inches)	64%	extreme
July Weather	21°C (70°F)	10 mm (0.4 inches)	44%	extreme
August Weather	20°C (68°F)	13 mm (0.5 inches)	36%	extreme
September Weather	15°C (60°F)	19 mm (0.7 inches)	44%	very high
October Weather	8°C (47°F)	43 mm (1.7 inches)	65%	high
November Weather	3°C (38°F)	79 mm (3.1 inches)	84%	moderate
December Weather	-2°C (29°F)	132 mm (5.2 inches)	83%	moderate