August weather forecast and climate
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
August, the last month of the summer, in Olympia, is also a moderately hot month, with average temperature fluctuating between 50.5°F (10.3°C) and 78.6°F (25.9°C).

Temperature

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

Humidity

In Olympia, the average relative humidity in August is 73%.

Rainfall

In Olympia, during 5.5 rainfall days, 0.47" (12mm) of precipitation is typically accumulated. 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 is 14.2h.

Sunshine

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

UV index

The average daily maximum UV index in August is 4. A UV Index of 3 to 5 symbolizes a medium vulnerability from unprotected exposure to the Sun's UV rays for the ordinary person.
Note: In August, the average maximum UV index of 4 translate into the following recommendations:
Take precautions. Light skin individuals may get burned in less than 30 minutes. 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.

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 temperature in August in Olympia?

In August, in Olympia, the average high-temperature is 78.6°F (25.9°C), and the average low-temperature is 50.5°F (10.3°C).

What is the average humidity in August in Olympia?

In Olympia, the average relative humidity in August is 73%.

How much does it rain in Olympia in August?

In Olympia, Washington, in August, during 5.5 rainfall days, 0.47" (12mm) of precipitation is typically accumulated.

When it does not snow in Olympia?

April through October are months without snowfall.

How many hours of daylight does Olympia have in August?

In Olympia, the average length of the day in August is 14.2h.

What month has the most sunshine in Olympia?

With an average of 10.2h of sunshine, August has the most sunshine of the year in Olympia, Washington.

How many hours of sunshine does Olympia have in August?

The average sunshine in August is 10.2h.

What is the UV index intensity in August in Olympia?

The average daily maximum UV index in August in Olympia, Washington, is 4. A UV Index of 3 to 5 symbolizes a moderate health threat from the exposure to the Sun's UV radiation.
Average temperature in August - Olympia, WA
  • Average high temperature in August: 25.9°C

The warmest month (with the highest average high temperature) is August (25.9°C).
The month with the lowest average high temperature is December (6.1°C).

  • Average low temperature in August: 10.3°C

The month with the highest average low temperature is August (10.3°C).
The coldest month (with the lowest average low temperature) is December (0.8°C).

Average pressure in August - Olympia, WA
  • Average pressure in August: 1016.6mbar

The month with the highest atmospheric pressure is January (1018.9mbar).
The month with the lowest atmospheric pressure is March (1016.4mbar).

Average wind speed in August - Olympia, WA
  • Average wind speed in August: 6.4km/h

The windiest months (with the highest average wind speed) are March and November (7.4km/h).
The calmest month (with the lowest average wind speed) is September (6.1km/h).

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

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

Average rainfall in August - Olympia, WA
  • Average rainfall in August: 12mm

The wettest month (with the highest rainfall) is December (147mm).
The driest month (with the least rainfall) is July (10mm).

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).

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

The month with the highest snowfall is February (59mm).
Months with the least snowfall are April, May, June, July, August, September and October (0mm).

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).
Months with the least snowfall days are May, June, July, August, September and October (0 days).

Average daylight in August / Average sunshine in August - Olympia, WA
  • Average daylight in August: 14.2h

The month with the longest days is June (Average daylight: 15.8h).
The month with the shortest days is December (Average daylight: 8.6h).

  • Average sunshine in August: 10.2h

The month with the most sunshine is August (Average sunshine: 10.2h).
The month with the least sunshine is December (Average sunshine: 3.4h).

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).

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

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

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

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

Average visibility in August - Olympia, WA
  • Average visibility in August: 8km

Months with the highest visibility are June, July and August (8km).
Months with the lowest visibility are January, February, November and December (6km).