August Weather in Fortuna, United States

Last updated: June 24, 2025

In August, the average temperature in Fortuna, United States hovers around 16°C (61°F), with a refreshing minimum of 9°C (49°F) and a pleasant maximum of 28°C (83°F). You're likely to stay dry, as precipitation is minimal at just 2 mm (0.1 in) over the course of 0 days. Enjoy the moderate climate with an average humidity level of about 60%!

August Temperature in Fortuna

In August in Fortuna, the average temperature is 16°C (61°F). Maximums can reach 28°C (83°F) and minimums can be as low as 9°C (49°F). This makes it an ideal time for travelers to enjoy outdoor activities while experiencing mild weather.

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

The chart illustrates August temperature patterns in Fortuna, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Fortuna, August typically has an average temperature of 16°C (61°F), with highs reaching up to 28°C (83°F) and lows dropping to around 9°C (49°F).

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

August Precipitation in Fortuna

In Fortuna in August, the precipitation amount is 2 mm (0.1 in) during a span of 0 days.

August Precipitation Trends in Fortuna

The chart displays monthly precipitation patterns in Fortuna, 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 Fortuna, August typically receives around 2 mm (0.1 inches) of precipitation spread over approximately 0 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 Fortuna

In Fortuna in August, humidity is 60%. With an average temperature of 16°C (61°F), this humidity feels like a refreshing yet slightly clingy embrace, making it ideal for leisurely sightseeing, though it might leave you reaching for a cool drink more often.

August Average Humidity in Fortuna

This chart illustrates the average monthly humidity levels in Fortuna, 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 Fortuna is approximately 60%, 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 Fortuna

In Fortuna in August, the maximum UV index reaches 10, which corresponds to a very high Exposure Category. With a time to burn of just 15 minutes, it's crucial to take precautions. For more detailed information, you can check the Hourly UV Index in Fortuna.

Maximum UV Index Levels in Fortuna for August

The chart shows the monthly maximum UV Index (UVI) for Fortuna 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 Fortuna typically reaches 10, which falls under the very high exposure category.

Data source: Fortuna 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 Fortuna Compares to Other Months

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

This table compares monthly weather conditions in Fortuna, showing how August’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	9°C (48°F)	205 mm (8.1 inches)	86%	moderate
February Weather	8°C (47°F)	188 mm (7.4 inches)	85%	moderate
March Weather	9°C (48°F)	164 mm (6.5 inches)	85%	high
April Weather	10°C (51°F)	93 mm (3.7 inches)	82%	very high
May Weather	12°C (53°F)	61 mm (2.4 inches)	81%	very high
June Weather	14°C (57°F)	17 mm (0.7 inches)	79%	extreme
July Weather	15°C (59°F)	2 mm (0.1 inches)	70%	very high
August Weather	16°C (61°F)	2 mm (0.1 inches)	60%	very high
September Weather	16°C (61°F)	20 mm (0.8 inches)	62%	very high
October Weather	13°C (56°F)	49 mm (1.9 inches)	72%	high
November Weather	11°C (51°F)	112 mm (4.4 inches)	87%	moderate
December Weather	9°C (48°F)	150 mm (5.9 inches)	86%	low