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 sea temperature 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
A minimal variation is noted in Seaside's average high-temperature at the onset of May, reaching a refreshing 57.6°F (14.2°C) from April's 52.3°F (11.3°C). During May, Seaside observes a consistent average nighttime temperature of 47.5°F (8.6°C).Humidity
The months with the lowest humidity in Seaside are January, March through May, October and December, with an average relative humidity of 81%.Rainfall
In Seaside, during May, the rain falls for 12.8 days and regularly aggregates up to 1.85" (47mm) of precipitation. In Seaside, during the entire year, the rain falls for 185.6 days and collects up to 39.8" (1011mm) of precipitation.Snowfall
In Seaside, snow does not fall in April through November.Ocean temperature
In May, the average ocean temperature is 52.9°F (11.6°C).Note: It is advised against swimming in 52.9°F (11.6°C) when it drops below 50°F (10°C). Such temperatures can cause extreme cold shock, leading to hyperventilation.
Daylight
In May, the average length of the day is 14h and 59min.On the first day of May in Seaside, sunrise is at 6:01 am and sunset at 8:24 pm. On the last day of the month, sunrise is at 5:28 am and sunset at 8:58 pm PDT.
Sunshine
In May, the average sunshine is 8.3h.UV index
May through September, with an average maximum UV index of 4, are months with the highest UV index in Seaside. A UV Index estimate of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV rays for the average person.Note: A maximum UV index of 4 in May translates into the following recommendations:
Take precautions - Protection against skin and eye damage is obliged. The Sun's most harmful UV rays are emitted around midday; avoid staying outdoors for long during this time. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage.
Frequently asked questions
What are May temperatures in Seaside?
What are the least humid months in Seaside?
What is the average humidity in May in Seaside?
How much does it rain in Seaside in May?
When it does not snow in Seaside?
How cold is the water in May in Seaside?
How many hours of daylight does Seaside have in May?
When are sunrise and sunset in May in Seaside?
How many hours of sunshine does Seaside have in May?
What is the month with the highest UV index in Seaside?
What is the UV index intensity in May in Seaside?
Average temperature in May
Seaside, OR
- Average high temperature in May: 57.6°F
The warmest month (with the highest average high temperature) is August (65.5°F).
The month with the lowest average high temperature is December (46.6°F).
- Average low temperature in May: 47.5°F
The month with the highest average low temperature is August (55°F).
The coldest month (with the lowest average low temperature) is December (40.5°F).
Average pressure in May
Seaside, OR
- Average pressure in May: 30.06"Hg
The month with the highest atmospheric pressure is January (30.08"Hg).
The months with the lowest atmospheric pressure are March and September (30.02"Hg).
Average wind speed in May
Seaside, OR
- Average wind speed in May: 7.7mph
The windiest month (with the highest average wind speed) is January (10.9mph).
The calmest month (with the lowest average wind speed) is August (6.3mph).
Average humidity in May
Seaside, OR
- Average humidity in May: 81%
The month with the highest relative humidity is August (84%).
The months with the lowest relative humidity are January, March, April, May, October and December (81%).
Average rainfall in May
Seaside, OR
- Average rainfall in May: 1.85"
The wettest month (with the highest rainfall) is December (6.54").
The driest months (with the least rainfall) are July and August (0.47").
Average rainfall days in May
Seaside, OR
- Average rainfall days in May: 12.8 days
The month with the highest number of rainy days is March (20.8 days).
The months with the least rainy days are July and August (7.3 days).
Average snowfall in May
Seaside, OR
- Average snowfall in May: 0"
The month with the highest snowfall is February (0.59").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").
Average snowfall days in May
Seaside, OR
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is February (1.3 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average sea temperature in May
Seaside, OR
- Average sea temperature in May: 52.9°F
The best month for swimming (with the highest average sea temperature) is July (57.2°F).
The coldest month (with the lowest average sea temperature) is February (48.1°F).
Average daylight in May /
Average sunshine in May
Seaside, OR
- Average daylight in May: 15h and 0min
The month with the longest days is June (Average daylight: 15h and 42min).
The month with the shortest days is December (Average daylight: 8h and 42min).
- Average sunshine in May: 8h and 2min
The month with the most sunshine is August (Average sunshine: 10h and 0min).
The months with the least sunshine are January and February (Average sunshine: 3h and 54min).
Average sunshine days in May
Seaside, OR
- Average sunshine days in May: 15.4 days
The month with the most sunshine days is August (21.2 days).
The month with the least sunshine days is February (7.5 days).
Average UV index in May
Seaside, OR
- Average UV index in May: 4
The months with the highest UV index are May, June, July, August and September (UV index 4).
The months with the lowest UV index are February, November and December (UV index 2).
Average cloud cover in May
Seaside, OR
- Average cloud cover in May: 48
The months with the most cloud cover are January and February (Cloud cover 59).
The month with the least cloud cover is August (Cloud cover 35).
Average visibility in May
Seaside, OR
- Average visibility in May: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, September, October, November and December (6mi).
The month with the lowest visibility is August (5mi).
Seaside, Oregon, USA
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