May weather forecastCoos Bay, OR

May
Weather in May
Moving into May, the beautiful city of Coos Bay, Oregon, witnesses the maturation of spring. As the temperatures rise, the rainfall sees an even steeper decrease to 1.69" (43mm), bringing dryness and warmth in the air. The wind speed continues to ease off, and the broader daylight hours resonate with the blithe spirit of spring. May is undeniably a bright and sunny month, revealing a clear, azure sky for most days. The gentle weather of May sets the tone for the forthcoming summer.Temperature
May in Coos Bay observes an average high-temperature of a refreshing 58.6°F (14.8°C), marking an insignificant difference from April's 54.5°F (12.5°C). Coos Bay reports an average nighttime low-temperature of 46.2°F (7.9°C) in May.Humidity
The average relative humidity in May in Coos Bay is 82%.Rainfall
In May, the rain falls for 11.6 days. Throughout May, 1.69" (43mm) of precipitation is accumulated. Throughout the year, there are 153 rainfall days, and 33.5" (851mm) of precipitation is accumulated.Snowfall
March through October and December are months without snowfall in Coos Bay.Daylight
The average length of the day in May is 14h and 43min.On the first day of the month, sunrise is at 6:08 am and sunset at 8:19 pm. On the last day of May, sunrise is at 5:39 am and sunset at 8:50 pm PDT.
Sunshine
The average sunshine in May is 8.8h.UV index
In May, the average daily maximum UV index is 4. A UV Index of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV rays for the average person.Note: The maximum daily UV index of 4 during May translates into the following directions:
Undertake protective steps - Recommendations to avoid sunburn are issued. Considering the Sun's intensity during midday, it's wise to minimize direct exposure. For optimum UV protection, wear sun-resistant attire complemented with a hat and quality shades.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Coos Bay, OR
- Average high temperature in May: 58.6°F
The warmest month (with the highest average high temperature) is August (66.9°F).
The month with the lowest average high temperature is December (49.1°F).
- Average low temperature in May: 46.2°F
The month with the highest average low temperature is August (52.3°F).
The coldest months (with the lowest average low temperature) are February and December (41.7°F).
Average pressure in May
Coos Bay, OR
- Average pressure in May: 30.06"Hg
The month with the highest atmospheric pressure is January (30.1"Hg).
The month with the lowest atmospheric pressure is September (30.01"Hg).
Average wind speed in May
Coos Bay, OR
- Average wind speed in May: 8.1mph
The windiest month (with the highest average wind speed) is March (9.1mph).
The calmest month (with the lowest average wind speed) is August (6.9mph).
Average humidity in May
Coos Bay, OR
- Average humidity in May: 82%
The months with the highest relative humidity are February and August (84%).
The months with the lowest relative humidity are April and October (81%).
Average rainfall in May
Coos Bay, OR
- Average rainfall in May: 1.69"
The wettest month (with the highest rainfall) is December (5.87").
The driest month (with the least rainfall) is July (0.16").
Average rainfall days in May
Coos Bay, OR
- Average rainfall days in May: 11.6 days
The month with the highest number of rainy days is March (19.2 days).
The month with the least rainy days is August (3.5 days).
Average snowfall in May
Coos Bay, OR
- Average snowfall in May: 0"
The month with the highest snowfall is February (0.2").
The months with the least snowfall are March, April, May, June, July, August, September, October and December (0").
Average snowfall days in May
Coos Bay, OR
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is February (0.3 days).
The months with the least snowfall days are March, April, May, June, July, August, September and October (0 days).
Average daylight in May /
Average sunshine in May
Coos Bay, OR
- Average daylight in May: 14h and 42min
The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 9h and 0min).
- Average sunshine in May: 8h and 48min
The month with the most sunshine is July (Average sunshine: 10h and 48min).
The months with the least sunshine are January and February (Average sunshine: 4h and 24min).
Average sunshine days in May
Coos Bay, OR
- Average sunshine days in May: 16.8 days
The month with the most sunshine days is July (25.7 days).
The month with the least sunshine days is February (9.7 days).
Average UV index in May
Coos Bay, OR
- Average UV index in May: 4
The month with the highest UV index is July (UV index 5).
The months with the lowest UV index are February and December (UV index 2).
Average cloud cover in May
Coos Bay, OR
- Average cloud cover in May: 44
The month with the most cloud cover is February (Cloud cover 56).
The months with the least cloud cover are July and September (Cloud cover 28).
Average visibility in May
Coos Bay, OR
- Average visibility in May: 6mi
The months with the highest visibility are January, February, March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are July and August (5mi).





