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August Weather in Coos Bay, United States

Last updated: June 24, 2025

In August, the average temperature in Coos Bay, United States hovers around 16°C (61°F), creating a pleasant climate. Expect minimums of 10°C (50°F) and comfortable maximums of 29°C (84°F). With an average humidity of 67% and just 6 mm (0.2 in) of precipitation spread over 1 day, it's a great time to explore the outdoors!

August Temperature in Coos Bay

In August in Coos Bay, the average temperature is 16°C (61°F), with maximums reaching 29°C (84°F) and minimums dipping as low as 10°C (50°F). It's a pleasant time to explore the outdoors and enjoy mild weather during your travels.

August Weather in Coos Bay: Daily Temperature Highs, Lows, and Averages

The chart illustrates August temperature patterns in Coos Bay, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Coos Bay, August typically has an average temperature of 16°C (61°F), with highs reaching up to 29°C (84°F) and lows dropping to around 10°C (50°F).
JanFebMarAprMayJunJulAugSepOctNovDec474547505458606160555047
Data source: Temperature data for Coos Bay 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 Coos Bay

In Coos Bay in August, the precipitation amount is 6 mm (0.2 in) over the course of 1 day.

August Precipitation Trends in Coos Bay

The chart displays monthly precipitation patterns in Coos Bay, 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 Coos Bay, August typically receives around 6 mm (0.2 inches) of precipitation spread over approximately 1 days.
JanFebMarAprMayJunJulAugSepOctNovDec1922201491185937364870150204
Data source: Precipitation data for August generated using information from the Copernicus Climate Change Service.
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August Humidity in Coos Bay

In Coos Bay in August humidity is 67%. With average temperature 16°C (61°F), this humidity feels like a warm embrace that can make outdoor activities slightly uncomfortable, requiring travelers to stay hydrated and take frequent breaks in shaded areas.

August Average Humidity in Coos Bay

This chart illustrates the average monthly humidity levels in Coos Bay, 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 Coos Bay is approximately 67%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec84%85%86%83%83%83%78%67%66%77%87%87%
Data source: Humidity data for August generated using information from the Copernicus Climate Change Service.

August UV Index in Coos Bay

In Coos Bay in August, the maximum UV index is 9, which corresponds to a very high Exposure Category. The time to burn is just 15 minutes, so it's essential to take precautions. For detailed information, you can check the Hourly UV Index in Coos Bay.

Maximum UV Index Levels in Coos Bay for August

The chart shows the monthly maximum UV Index (UVI) for Coos Bay 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 Coos Bay typically reaches 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec246710101098532
Data source: Coos Bay 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 Coos Bay Compares to Other Months

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

This table compares monthly weather conditions in Coos Bay, showing how August’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather8°C (47°F)192 mm (7.6 inches)84%low
February Weather7°C (46°F)220 mm (8.7 inches)85%moderate
March Weather8°C (47°F)149 mm (5.9 inches)86%high
April Weather10°C (50°F)118 mm (4.6 inches)83%high
May Weather12°C (54°F)59 mm (2.3 inches)83%very high
June Weather14°C (58°F)37 mm (1.4 inches)83%very high
July Weather16°C (60°F)3 mm (0.1 inches)78%very high
August Weather16°C (61°F)6 mm (0.2 inches)67%very high
September Weather15°C (60°F)48 mm (1.9 inches)66%very high
October Weather13°C (55°F)70 mm (2.7 inches)77%moderate
November Weather10°C (51°F)150 mm (5.9 inches)87%moderate
December Weather8°C (47°F)204 mm (8.0 inches)87%low

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