Contents
- Weather in May
- Frequently asked questions
- Average temperature in May
- Average pressure in May
- Average wind speed in May
- Average humidity in May
- Average rainfall in May
- Average rainfall days in May
- Average snowfall in May
- Average snowfall days in May
- Average daylight in May
- Average sunshine in May
- Average sunshine days in May
- Average UV index in May
- Average cloud cover in May
- Average visibility in May
Weather in May
Temperature
Olympia in May observes a minor temperature shift, with average high-temperatures adjusting from a moderate 57°F (13.9°C) in April to a comfortable 65.7°F (18.7°C). In Olympia, following the steep rise of daytime temperatures, an average nighttime low of 41.9°F (5.5°C) is anticipated during May.Humidity
In May, the average relative humidity in Olympia is 77%.Rainfall
In Olympia, in May, during 13.5 rainfall days, 1.77" (45mm) of precipitation is typically accumulated. Throughout the year, in Olympia, there are 177.4 rainfall days, and 37.05" (941mm) of precipitation is accumulated.Snowfall
In Olympia, snow does not fall in April through October.Daylight
The average length of the day in May in Olympia is 15h and 5min.On the first day of May in Olympia, Washington, sunrise is at 5:54 am and sunset at 8:22 pm. On the last day of the month, sunrise is at 5:20 am and sunset at 8:58 pm PDT.
Sunshine
In May, the average sunshine is 8.1h.UV index
In Olympia, the average daily maximum UV index in May is 4. A UV Index reading of 3 to 5 represents a moderate threat to health from unsafe exposure to UV radiation for ordinary individuals.Note: An average UV index of 4 in May transforms into this advice:
Exercise care. People with light skin might get burns in fewer than 30 minutes. The midday Sun can be harmful due to its potent UV radiation; seek shade and reduce exposure. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in Olympia in May?
What is the average humidity in May in Olympia?
How much does it rain in Olympia in May?
When it does not snow in Olympia?
How many hours of daylight does Olympia have in May?
What time are sunrise and sunset in May in Olympia?
How many hours of sunshine does Olympia have in May?
What is the UV index reading in May in Olympia?
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).
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).
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).
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%).
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").
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).
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").
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).
Average daylight in May /
Average sunshine in May
Olympia, WA
- Average daylight in May: 15h and 1min
The month with the longest days is June (Average daylight: 15h and 48min).
The month with the shortest days is December (Average daylight: 8h and 36min).
- Average sunshine in May: 8h and 1min
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).
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).
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).
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).
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).
Olympia, Washington, USA
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