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
May showcases a minor temperature ascent, adjusting from April's icy 39.7°F (4.3°C) to a frosty 45.3°F (7.4°C). May nights reveal a minor deviation from daytime highs, with a mean low-temperature of 41.5°F (5.3°C).Humidity
In Old Harbor, the average relative humidity in May is 83%.Rainfall
In May, in Old Harbor, the rain falls for 15.3 days. Throughout May, 2.72" (69mm) of precipitation is accumulated. Throughout the year, in Old Harbor, there are 171.2 rainfall days, and 37.32" (948mm) of precipitation is accumulated.Snowfall
January through May, September through December are months with snowfall in Old Harbor. May is the last month it regularly snows. During 0.6 snowfall days, in May, Old Harbor aggregates 0.08" (2mm) of snow. In Old Harbor, during the entire year, snow falls for 35.1 days and aggregates up to 13.74" (349mm) of snow.Daylight
In Old Harbor, Alaska, the average length of the day in May is 16h and 36min.On the first day of the month, sunrise is at 6:21 am and sunset at 9:58 pm. On the last day of May, sunrise is at 5:26 am and sunset at 10:55 pm AKDT.
Sunshine
In May, the average sunshine is 6.9h.UV index
In May, the average daily maximum UV index is 2. A UV Index of 2, and less, symbolizes a low threat to health from unprotected exposure to Sun's UV rays for average individuals.Note: The daily high UV index of 2 during May translates into the following recommendations:
Most people can stay in the Sun for up to 1 hour without burning, apart from children that always must be protected from sun exposure. Minimize direct exposure to the Sun during midday when its radiation is at its peak. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days. Take heed! Reflection from the snow can almost amplify the Sun's UV radiation by double.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average May temperature?
What is the average humidity in May?
How many days does it rain in May?
What is the last month it snows?
How many hours of daylight does Old Harbor have in May?
When are sunrise and sunset in May?
How long on average sun shines in May?
What is the UV index intensity in May?
Average temperature in May
Old Harbor, AK
- Average high temperature in May: 45.3°F
The warmest month (with the highest average high temperature) is August (57.6°F).
The month with the lowest average high temperature is January (35.4°F).
- Average low temperature in May: 41.5°F
The month with the highest average low temperature is August (50.7°F).
The coldest month (with the lowest average low temperature) is March (30.6°F).
Average pressure in May
Old Harbor, AK
- Average pressure in May: 29.89"Hg
The month with the highest atmospheric pressure is July (29.98"Hg).
The month with the lowest atmospheric pressure is December (29.55"Hg).
Average wind speed in May
Old Harbor, AK
- Average wind speed in May: 10.4mph
The windiest month (with the highest average wind speed) is December (14.2mph).
The calmest month (with the lowest average wind speed) is July (7.8mph).
Average humidity in May
Old Harbor, AK
- Average humidity in May: 83%
The month with the highest relative humidity is July (86%).
The months with the lowest relative humidity are March and November (80%).
Average rainfall in May
Old Harbor, AK
- Average rainfall in May: 2.72"
The wettest months (with the highest rainfall) are October and November (4.53").
The driest month (with the least rainfall) is July (1.85").
Average rainfall days in May
Old Harbor, AK
- Average rainfall days in May: 15.3 days
The month with the highest number of rainy days is September (17.6 days).
The month with the least rainy days is March (10.8 days).
Average snowfall in May
Old Harbor, AK
- Average snowfall in May: 0.08"
The month with the highest snowfall is March (3.15").
The months with the least snowfall are June, July and August (0").
Average snowfall days in May
Old Harbor, AK
- Average snowfall days in May: 0.6 days
The month with the highest number of snowfall days is March (8.5 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in May /
Average sunshine in May
Old Harbor, AK
- Average daylight in May: 16h and 4min
The month with the longest days is June (Average daylight: 17h and 48min).
The month with the shortest days is December (Average daylight: 6h and 48min).
- Average sunshine in May: 6h and 5min
The month with the most sunshine is July (Average sunshine: 8h and 18min).
The months with the least sunshine are January and December (Average sunshine: 2h and 36min).
Average sunshine days in May
Old Harbor, AK
- Average sunshine days in May: 13.5 days
The month with the most sunshine days is July (14.7 days).
The month with the least sunshine days is April (10.7 days).
Average UV index in May
Old Harbor, AK
- Average UV index in May: 2
The months with the highest UV index are June, July, August and September (UV index 3).
The month with the lowest UV index is January (UV index 1).
Average cloud cover in May
Old Harbor, AK
- Average cloud cover in May: 62
The month with the most cloud cover is January (Cloud cover 63).
The month with the least cloud cover is September (Cloud cover 52).
Average visibility in May
Old Harbor, AK
- Average visibility in May: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Old Harbor, Alaska, USA
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