April weather forecastJuneau, AK
April
Weather in April
April marks a clear shift in weather in Juneau, as winter officially gives way to spring. The landscape transforms as the snow retreats, reduced to just 29.45" (748mm). Along with this, a noticeable rise in temperature induces a freshness in the air and the environment. The extended daylight hours continue to increase, adding an energizing brightness to the day. Although rain does begin to appear, it does nothing to diminish the beauty of April in Juneau.Temperature
April's arrival signals a modest temperature shift, moving from a freezing cold 29.5°F (-1.4°C) in March to a wintry 37°F (2.8°C). Juneau's average low-temperature in the month of April is recorded at a subzero cold 26.4°F (-3.1°C).Humidity
In April, the average relative humidity is 90%.Rainfall
In Juneau, during April, the rain falls for 13.1 days and regularly aggregates up to 6.02" (153mm) of precipitation. Throughout the year, there are 172.4 rainfall days, and 85.87" (2181mm) of precipitation is accumulated.Snowfall
January through May, October through December are months with snowfall. In Juneau, Alaska, during April, snow falls for 15.9 days and regularly aggregates up to 29.45" (748mm) of snow. Throughout the year, there are 126.6 snowfall days, and 290.12" (7369mm) of snow is accumulated.Ocean temperature
In Juneau, the average seawater temperature in April is 41.4°F (5.2°C).Note: Swimming in 41.4°F (5.2°C) feels unbearing at 55.4°F (13°C) and can be life-risking below 50°F (10°C), causing breathing issues and cold shock, depending on a person's capacity.
Daylight
In April, the average length of the day is 14h and 29min.On the first day of April, sunrise is at 6:22 am and sunset at 7:40 pm. On the last day of the month, sunrise is at 5:03 am and sunset at 8:46 pm AKDT.
Sunshine
In April, the average sunshine is 5.1h.UV index
The months with the lowest UV index are January, April, October through December, with an average maximum UV index of 1. A UV Index reading of 2, and below, represents a minimal health hazard from exposure to the Sun's UV radiation for the ordinary person.Note: The daily high UV index of 1 in April translates into this advice:
While sun exposure does not greatly affect most, individuals with fair skin, babies, and children always need vigilant safeguarding. Considering the strength of solar radiation at midday, one should avoid direct Sun exposure. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck. Notice! The UV radiation of the Sun can be intensified nearly twofold due to the reflective quality of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in April
Juneau, AK
- Average high temperature in April: 37°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 April: 26.4°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 April
Juneau, AK
- Average pressure in April: 29.92"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 April
Juneau, AK
- Average wind speed in April: 4.7mph
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 April
Juneau, AK
- Average humidity in April: 90%
The month with the highest relative humidity is January (92%).
The month with the lowest relative humidity is May (86%).
Average rainfall in April
Juneau, AK
- Average rainfall in April: 6.02"
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 April
Juneau, AK
- Average rainfall days in April: 13.1 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 April
Juneau, AK
- Average snowfall in April: 29.45"
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 April
Juneau, AK
- Average snowfall days in April: 15.9 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 April
Juneau, AK
- Average sea temperature in April: 41.3°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 April /
Average sunshine in April
Juneau, AK
- Average daylight in April: 14h and 30min
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 April: 5h and 6min
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 April
Juneau, AK
- Average sunshine days in April: 7.5 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 April
Juneau, AK
- Average UV index in April: 1
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 April
Juneau, AK
- Average cloud cover in April: 68
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 April
Juneau, AK
- Average visibility in April: 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).
