May weather forecastCannon Beach, OR
May
Weather in May
May imparts a considerable change to Cannon Beach's weather pattern. The city enters a substantially drier period with rainfall and the number of rainy days showing significant reductions from April's results. The gradual increase in temperature, while still moderate, prepares the city for the warmth of summer. Longer sunny days become increasingly commonplace, heralding the impending summer. Weather in May is marked by noticeably reduced wind gusts, a mere 11.6mph (18.7km/h) on average.Temperature
Cannon Beach experiences a minor change to a mild 57.6°F (14.2°C) in average high-temperature during May, closely reflecting April. The mean low-temperature during May nights is a chilly 47.5°F (8.6°C).Humidity
January, March through May, October and December, with an average relative humidity of 81%, are the least humid months.Rainfall
In May, the rain falls for 12.8 days. Throughout May, 1.85" (47mm) of precipitation is accumulated. Throughout the year, there are 185.6 rainfall days, and 39.8" (1011mm) of precipitation is accumulated.Snowfall
In Cannon Beach, snow does not fall in April through November.Ocean temperature
In May, the average ocean temperature is 52.9°F (11.6°C).Note: Dipping in 52.9°F (11.6°C) at temperatures less than 50°F (10°C) without proper gear can lead to pronounced cold shock and breathing difficulties.
Daylight
In May, the average length of the day is 14h and 58min.On the first day of May, 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
The average sunshine in May is 8.3h.UV index
May through September, with an average maximum UV index of 4, are months with the highest UV index. A UV Index reading of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV rays for the ordinary person.Note: The UV index of 4 during May leads to these advisories:
Adopt protective measures - Requirement to safeguard skin and eyes from harm exists. Avoiding direct sunlight during midday hours helps reduce the risk from intense UV radiation. To mitigate harm from sun exposure, pick sunglasses offering UVA and UVB defense.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Cannon Beach, 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
Cannon Beach, 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
Cannon Beach, 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
Cannon Beach, 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
Cannon Beach, 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
Cannon Beach, 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
Cannon Beach, 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
Cannon Beach, 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
Cannon Beach, 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
Cannon Beach, 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 18min
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
Cannon Beach, 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
Cannon Beach, 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
Cannon Beach, 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
Cannon Beach, 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).
