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
The start of May in Juneau is characterized by an increase in the average high-temperature, transitioning from a wintry 37°F in April to a frosty 47.5°F. Juneau's May nights cool down to an average low-temperature of 35.2°F.Humidity
The least humid month is May, with an average relative humidity of 86%.Rainfall
The month with the least rainfall is May, when the rain falls for 18.5 days and typically collects 4.13" of precipitation.Snowfall
January through May, October through December are months with snowfall in Juneau. May is the last month it regularly snows. During 3.2 snowfall days, in May, Juneau aggregates 3.31" of snow. Throughout the year, in Juneau, there are 126.6 snowfall days, and 290.12" of snow is accumulated.Ocean temperature
In May, the average ocean temperature is 44.2°F.Note: You can swim in 44.2°F below 50°F with proper thermal wear; failing that, the cold shock and respiratory challenges are nearly certain. A short span at 55.4°F without it is tough.
Daylight
In May, the average length of the day is 16h and 50min.On the first day of May, sunrise is at 5:02 am and sunset at 8:46 pm. On the last day of the month, sunrise is at 4:02 am and sunset at 9:47 pm AKDT.
Sunshine
In May, the average sunshine is 6.2h.UV index
May and July, with an average maximum UV index of 3, are months with the highest UV index in Juneau, Alaska. A UV Index of 3 to 5 symbolizes a medium vulnerability from unprotected exposure to Sun's UV rays for the ordinary person.Note: In May, the maximum UV index of 3 suggests these recommendations:
Put precautions into practice - Guidance to elude sunburn is provided. Solar radiation peaks around mid-day, so it's wise to limit exposure to the Sun at this time. On sunny days, it's ideal to wear sunglasses that filter out UVA and UVB rays. On your guard! Snow's reflection can almost double the intensity of the Sun's UV radiation.
FAQ
What are the temperatures in Juneau in May?
What is the least humid month in Juneau?
What is the average humidity in May in Juneau?
What is the driest month in Juneau?
How much does it rain in Juneau in May?
What is the last month it snows in Juneau?
What is the ocean temperature in May in Juneau?
How many hours of daylight does Juneau have in May?
When is the sunrise / sunset in May in Juneau?
How many hours of sunshine does Juneau have in May?
What are the months with the highest UV index in Juneau?
What is the UV index reading in May in Juneau?
Average temperature in May
Juneau, AK
- Average high temperature in May: 47.5°F
The warmest month (with the highest average high temperature) is July (55.8°F).
The months with the lowest average high temperature are January and December (25.7°F).
- Average low temperature in May: 35.2°F
The month with the highest average low temperature is July (45.1°F).
The coldest month (with the lowest average low temperature) is February (17.1°F).
Average pressure in May
Juneau, AK
- Average pressure in May: 29.99"Hg
The month with the highest atmospheric pressure is July (30.03"Hg).
The month with the lowest atmospheric pressure is November (29.8"Hg).
Average wind speed in May
Juneau, AK
- Average wind speed in May: 4.1mph
The windiest month (with the highest average wind speed) is January (6.9mph).
The calmest months (with the lowest average wind speed) are June and July (3.7mph).
Average humidity in May
Juneau, AK
- Average humidity in May: 86%
The month with the highest relative humidity is January (92%).
The month with the lowest relative humidity is May (86%).
Average rainfall in May
Juneau, AK
- Average rainfall in May: 4.13"
The wettest month (with the highest rainfall) is October (9.88").
The driest month (with the least rainfall) is May (4.13").
Average rainfall days in May
Juneau, AK
- Average rainfall days in May: 18.5 days
The month with the highest number of rainy days is September (21.9 days).
The month with the least rainy days is February (4.8 days).
Average snowfall in May
Juneau, AK
- Average snowfall in May: 3.31"
The month with the highest snowfall is December (62.8").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in May
Juneau, AK
- Average snowfall days in May: 3.2 days
The month with the highest number of snowfall days is January (21.9 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average sea temperature in May
Juneau, AK
- Average sea temperature in May: 44.1°F
The best month for swimming (with the highest average sea temperature) is August (53.5°F).
The coldest month (with the lowest average sea temperature) is March (40.3°F).
Average daylight in May /
Average sunshine in May
Juneau, AK
- Average daylight in May: 16h and 5min
The month with the longest days is June (Average daylight: 18h and 12min).
The month with the shortest days is December (Average daylight: 6h and 30min).
- Average sunshine in May: 6h and 1min
The month with the most sunshine is June (Average sunshine: 6h and 24min).
The month with the least sunshine is November (Average sunshine: 2h and 36min).
Average sunshine days in May
Juneau, AK
- Average sunshine days in May: 10 days
The month with the most sunshine days is May (10 days).
The month with the least sunshine days is November (6.1 days).
Average UV index in May
Juneau, AK
- Average UV index in May: 3
The months with the highest UV index are May and July (UV index 3).
The months with the lowest UV index are January, April, October, November and December (UV index 1).
Average cloud cover in May
Juneau, AK
- Average cloud cover in May: 61
The months with the most cloud cover are January and November (Cloud cover 72).
The month with the least cloud cover is May (Cloud cover 61).
Average visibility in May
Juneau, AK
- Average visibility in May: 4mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (4mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (4mi).
Juneau, Alaska, USA
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