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
The last month of the summer, August, is also a moderately hot month in Olympia, Washington, with temperature in the range of an average high of 78.6°F (25.9°C) and an average low of 50.5°F (10.3°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

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

Rainfall

In Olympia, in August, 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

April through October are months without snowfall.

Daylight

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

Sunshine

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

UV index

In August, the average daily maximum UV index in Olympia is 4. A UV Index estimate of 3 to 5 represents a moderate health risk from unsafe exposure to the UV radiation for the average person.
Note: In August, the average maximum UV index of 4 translate into the following recommendations:
Take precautions - Protection against sunburn is recommended. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun.

What is the warmest month in Olympia?

The warmest month in Olympia, Washington, is August, 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, Washington, the average relative humidity in August is 73%.

How many days does it rain in August in Olympia?

In Olympia, during August, the rain falls for 5.5 days and regularly aggregates up to 0.47" (12mm) of precipitation.

When it does not snow in Olympia?

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

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

The average length of the day in August in Olympia, Washington, 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.

How many hours of sunshine does Olympia have in August?

In August, the average sunshine is 10.2h.

How high is the UV index in August in Olympia?

In August, the average daily maximum UV index is 4. A UV Index reading of 3 to 5 represents a moderate health threat from unsafe exposure to the Sun's UV rays.
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).

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

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

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).

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: 0.47"

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

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: 0"

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

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: 5mi

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