May 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 May

May, the last month of the spring in Olympia, is a comfortable month, with an average temperature varying between 41.9°F (5.5°C) and 65.7°F (18.7°C).

Temperature

In May, the average high-temperature marginally rises from a mild 57°F (13.9°C) in April to a comfortable 65.7°F (18.7°C). The average low-temperature, in Olympia, is 41.9°F (5.5°C).

Humidity

In May, the average relative humidity in Olympia is 77%.

Rainfall

In May, in Olympia, the rain falls for 13.5 days. Throughout May, 1.77" (45mm) of precipitation is accumulated. Throughout the year, there are 177.4 rainfall days, and 37.05" (941mm) of precipitation is accumulated.

Snowfall

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

Daylight

The average length of the day in May is 15h and 5min.
On the first day of May in Olympia, Washington, sunrise is at 5:55 am and sunset at 8:21 pm. On the last day of the month, sunrise is at 5:20 am and sunset at 8:57 pm PDT.

Sunshine

The average sunshine in May in Olympia is 8.1h.

UV index

The average daily maximum UV index in May in Olympia is 4. A UV Index estimate of 3 to 5 represents a medium vulnerability from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: The daily maximum UV index of 4 in May interpret into the following advice:
Take precautions. Light skin individuals may get burned in less than 30 minutes. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. 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.
[Resources]

FAQ

What is the temperature in May in Olympia?

The average high-temperature, in May, is 65.7°F (18.7°C), while the average low-temperature is 41.9°F (5.5°C).

What is the average humidity in May in Olympia?

In May, the average relative humidity in Olympia, Washington, is 77%.

How much does it rain in Olympia in May?

In May, in Olympia, Washington, the rain falls for 13.5 days. Throughout May, 1.77" (45mm) of precipitation is accumulated.

When it does not snow in Olympia?

April through October are months without snowfall in Olympia, Washington.

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

In Olympia, the average day length in May is 15h and 5min.

What time are sunrise and sunset in May in Olympia?

On the first day of May in Olympia, Washington, sunrise is at 5:55 am and sunset at 8:21 pm. On the last day of the month, sunrise is at 5:20 am and sunset at 8:57 pm PDT.

How many hours of sunshine does Olympia have in May?

In May, the average sunshine duration in Olympia, Washington, is 8.1h.

What is the UV index reading in May in Olympia?

In Olympia, the average daily maximum UV index in May is 4. A UV Index value of 3 to 5 symbolizes a medium health risk from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in May
Olympia, WA

Average temperature in May - Olympia, WA
  • Average high temperature in May: 65.7°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 May: 41.9°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).

[Resources]

Average pressure in May
Olympia, WA

Average pressure in May - Olympia, WA
  • Average pressure in May: 30.04"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).

[Resources]

Average wind speed in May
Olympia, WA

Average wind speed in May - Olympia, WA
  • Average wind speed in May: 4.3mph

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).

[Resources]

Average humidity in May
Olympia, WA

Average humidity in May - Olympia, WA
  • Average humidity in May: 77%

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

[Resources]

Average rainfall in May
Olympia, WA

Average rainfall in May - Olympia, WA
  • Average rainfall in May: 1.77"

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

[Resources]

Average rainfall days in May
Olympia, WA

Average rainfall days in May - Olympia, WA
  • Average rainfall days in May: 13.5 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).

[Resources]

Average snowfall in May
Olympia, WA

Average snowfall in May - Olympia, WA
  • Average snowfall in May: 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").

[Resources]

Average snowfall days in May
Olympia, WA

Average snowfall days in May - Olympia, WA
  • Average snowfall days in May: 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).

[Resources]

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

Average daylight in May / Average sunshine in May - Olympia, WA
  • Average daylight in May: 15h and 5min

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 May: 8h and 6min

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).

[Resources]

Average sunshine days in May
Olympia, WA

Average sunshine days in May - Olympia, WA
  • Average sunshine days in May: 15.8 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).

[Resources]

Average UV index in May
Olympia, WA

Average UV index in May - Olympia, WA
  • Average UV index in May: 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).

[Resources]

Average cloud cover in May
Olympia, WA

Average cloud cover in May - Olympia, WA
  • Average cloud cover in May: 53

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).

[Resources]

Average visibility in May
Olympia, WA

Average visibility in May - Olympia, WA
  • Average visibility in May: 4mi

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).

[Resources]

Weather forecast for your location

1. Click Locate me button
2. Allow the app to use your location
* you will be automatically redirected to the weather forecast for your location