August weather forecast
Olympia, WA

The calm Capitol Lake overlooking the Washington State Capitol building in Olympia, Washington
The calm Capitol Lake overlooking the Washington State Capitol building in Olympia, Washington

Weather in August

August, the last month of the summer in Olympia, is another warm month, with an average temperature varying between 50.5°F (10.3°C) and 78.6°F (25.9°C).

Temperature

With an average high-temperature of 78.6°F (25.9°C) and an average low-temperature of 50.5°F (10.3°C), August is the warmest month.

Humidity

The average relative humidity in August is 73%.

Rainfall

In Olympia, it is raining for 5.5 days, with typically 0.47" (12mm) of accumulated precipitation. In Olympia, during the entire year, the rain falls for 177.4 days and collects up to 37.05" (941mm) of precipitation.

Snowfall

In Olympia, snow does not fall in April through October.

Daylight

In Olympia, the average length of the day in August is 14h and 10min.
On the first day of the month, sunrise is at 5:51 am and sunset at 8:44 pm. On the last day of August, sunrise is at 6:30 am and sunset at 7:53 pm PDT.

Sunshine

The month with the most sunshine is August, with an average of 10.2h of sunshine.

UV index

In August, the average daily maximum UV index is 4. A UV Index of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV rays for the ordinary person.
Note: The daily maximum UV index of 4 in August interpret into the following advice:
Take precautions - Protection against sunburn is recommended. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.
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FAQ

What is the warmest month in Olympia?

August is the warmest month in Olympia, Washington, with an average high-temperature of 78.6°F (25.9°C) and an average low-temperature of 50.5°F (10.3°C).

What is the average humidity in August in Olympia?

The average relative humidity in August in Olympia is 73%.

How much does it rain in Olympia in August?

In August, in Olympia, Washington, the rain falls for 5.5 days. Throughout August, 0.47" (12mm) of precipitation is accumulated.

When it does not snow in Olympia?

In Olympia, snow does not fall in April through October.

What is the average length of the day in August in Olympia?

The average day length in August is 14h and 10min.

When is the sunrise / sunset in August in Olympia?

In August, on the first day of the month, sunrise is at 5:51 am and sunset at 8:44 pm. On the last day of the month, sunrise is at 6:30 am and sunset at 7:53 pm PDT.

What month has the most sunshine in Olympia?

August has the most sunshine of the year, with an average of 10.2h of sunshine.

How many hours of sunshine does Olympia have in August?

In August, the average sunshine duration is 10.2h.

How high is the UV index in August in Olympia?

The average daily maximum UV index in August in Olympia is 4. A UV Index of 3 to 5 symbolizes a medium hazard to health from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in August
Olympia, WA

Average temperature in August - Olympia, WA
  • Average high temperature in August: 78.6°F

The warmest month (with the highest average high temperature) is August (78.6°F).
The month with the lowest average high temperature is December (43°F).

  • Average low temperature in August: 50.5°F

The month with the highest average low temperature is August (50.5°F).
The coldest month (with the lowest average low temperature) is December (33.4°F).

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Average pressure in August
Olympia, WA

Average pressure in August - Olympia, WA
  • Average pressure in August: 30.02"Hg

The month with the highest atmospheric pressure is January (30.09"Hg).
The month with the lowest atmospheric pressure is March (30.01"Hg).

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Average wind speed in August
Olympia, WA

Average wind speed in August - Olympia, WA
  • Average wind speed in August: 4mph

The windiest months (with the highest average wind speed) are March and November (4.6mph).
The calmest month (with the lowest average wind speed) is September (3.8mph).

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Average humidity in August
Olympia, WA

Average humidity in August - Olympia, WA
  • Average humidity in August: 73%

The months with the highest relative humidity are January, November and December (89%).
The month with the lowest relative humidity is July (71%).

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Average rainfall in August
Olympia, WA

Average rainfall in August - Olympia, WA
  • Average rainfall in August: 0.47"

The wettest month (with the highest rainfall) is December (5.79").
The driest month (with the least rainfall) is July (0.39").

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Average rainfall days in August
Olympia, WA

Average rainfall days in August - Olympia, WA
  • Average rainfall days in August: 5.5 days

The month with the highest number of rainy days is March (20.4 days).
The month with the least rainy days is August (5.5 days).

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Average snowfall in August
Olympia, WA

Average snowfall in August - Olympia, WA
  • Average snowfall in August: 0"

The month with the highest snowfall is February (2.32").
The months with the least snowfall are April, May, June, July, August, September and October (0").

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Average snowfall days in August
Olympia, WA

Average snowfall days in August - Olympia, WA
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is February (3.3 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

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Average daylight in August /
Average sunshine in August
Olympia, WA

Average daylight in August / Average sunshine in August - Olympia, WA
  • Average daylight in August: 14h and 10min

The month with the longest days is June (Average daylight: 15h and 50min).
The month with the shortest days is December (Average daylight: 8h and 35min).

  • Average sunshine in August: 10h and 12min

The month with the most sunshine is August (Average sunshine: 10h and 12min).
The month with the least sunshine is December (Average sunshine: 3h and 24min).

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Average sunshine days in August
Olympia, WA

Average sunshine days in August - Olympia, WA
  • Average sunshine days in August: 22.4 days

The month with the most sunshine days is August (22.4 days).
The month with the least sunshine days is February (8.4 days).

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Average UV index in August
Olympia, WA

Average UV index in August - Olympia, WA
  • Average UV index in August: 4

The months with the highest UV index are June and July (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 2).

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Average cloud cover in August
Olympia, WA

Average cloud cover in August - Olympia, WA
  • Average cloud cover in August: 35

The months with the most cloud cover are January and December (Cloud cover 65).
The months with the least cloud cover are July and August (Cloud cover 35).

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Average visibility in August
Olympia, WA

Average visibility in August - Olympia, WA
  • Average visibility in August: 5mi

The months with the highest visibility are June, July and August (5mi).
The months with the lowest visibility are January, February, March, April, May, September, October, November and December (4mi).

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