August Weather in Sequim, United States

Last updated: June 24, 2025

In Sequim, United States, the average temperature in August reaches a comfortable 16°C (61°F), with minimums dipping to 8°C (47°F) and maximums soaring up to 27°C (82°F). Expect about 45 mm (1.8 in) of precipitation over 9 days, and enjoy the season's moderate average humidity of 73%.

August Temperature in Sequim

In August in Sequim, the average temperature is 16°C (61°F). The maximum can reach 27°C (82°F), while the minimum can be as low as 8°C (47°F). This mild climate makes it an ideal time for travelers to explore the area and enjoy outdoor activities.

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

The chart illustrates August temperature patterns in Sequim, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Sequim, August typically has an average temperature of 16°C (61°F), with highs reaching up to 27°C (82°F) and lows dropping to around 8°C (47°F).

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

August Precipitation in Sequim

In Sequim in August, the precipitation amount is 45 mm (1.8 in) spread over 9 days.

August Precipitation Trends in Sequim

The chart displays monthly precipitation patterns in Sequim, 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 Sequim, August typically receives around 45 mm (1.8 inches) of precipitation spread over approximately 9 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 Sequim

In Sequim in August, humidity is 73%. With an average temperature of 16°C (61°F), this humidity feels like a warm, sticky embrace that can make traveling slightly uncomfortable, prompting you to seek shade and stay hydrated while exploring the sights.

August Average Humidity in Sequim

This chart illustrates the average monthly humidity levels in Sequim, 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 Sequim is approximately 73%, 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 Sequim

In Sequim in August, the maximum UV index is 8, which corresponds to a very high Exposure Category. This means that the time to burn is only 15 minutes. For more detailed information, you can refer to the Hourly UV Index in Sequim.

Maximum UV Index Levels in Sequim for August

The chart shows the monthly maximum UV Index (UVI) for Sequim 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 Sequim typically reaches 8, which falls under the very high exposure category.

Data source: Sequim 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 Sequim Compares to Other Months

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

This table compares monthly weather conditions in Sequim, showing how August’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	3°C (38°F)	182 mm (7.2 inches)	86%	low
February Weather	2°C (36°F)	150 mm (5.9 inches)	84%	moderate
March Weather	4°C (40°F)	128 mm (5.1 inches)	85%	moderate
April Weather	7°C (44°F)	119 mm (4.7 inches)	83%	high
May Weather	11°C (51°F)	93 mm (3.7 inches)	84%	very high
June Weather	13°C (56°F)	118 mm (4.6 inches)	84%	very high
July Weather	15°C (60°F)	49 mm (1.9 inches)	82%	very high
August Weather	16°C (61°F)	45 mm (1.8 inches)	73%	very high
September Weather	13°C (56°F)	122 mm (4.8 inches)	74%	high
October Weather	9°C (48°F)	143 mm (5.6 inches)	83%	moderate
November Weather	6°C (42°F)	199 mm (7.8 inches)	86%	moderate
December Weather	3°C (38°F)	193 mm (7.6 inches)	87%	low