April weather forecast
Juneau, AK

Blooming fireweed in Juneau, Alaska with snowy mountain peaks in the distance
Blooming fireweed in Juneau, Alaska with snowy mountain peaks in the distance

Weather in April

April is a cold spring month in Juneau, Alaska, with an average temperature ranging between max 37°F (2.8°C) and min 26.4°F (-3.1°C).

Temperature

In Juneau, Alaska, the average high-temperature in April slightly increases from a freezing cold 29.5°F (-1.4°C) in March to a cold 37°F (2.8°C). The average low-temperature, in April, is 26.4°F (-3.1°C).

Humidity

In April, the average relative humidity in Juneau is 90%.

Rainfall

In April, in Juneau, Alaska, the rain falls for 13.1 days. Throughout April, 6.02" (153mm) of precipitation is accumulated. Throughout the year, there are 172.4 rainfall days, and 85.87" (2181mm) of precipitation is accumulated.

Snowfall

Months with snowfall in Juneau are January through May, October through December. In Juneau, Alaska, in April, snow falls for 15.9 days, with typically accumulated 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, in April, the average water temperature is 41.4°F (5.2°C).
Note: At temperatures below 50°F (10°C), swimming in a suitably protected swimsuit is feasible; otherwise, cold shock and loss of breathing control are imminent. Even a short swim, without thermal protection, at temperatures around 55.4°F (13°C) is not comfortable.

Daylight

The average length of the day in April is 14h and 29min.
On the first day of April in Juneau, Alaska, sunrise is at 6:23 am and sunset at 7:39 pm. On the last day of the month, sunrise is at 5:04 am and sunset at 8:44 pm AKDT.

Sunshine

The average sunshine in April in Juneau 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 value of 2, and less, symbolizes a low health risk from unprotected exposure to Sun's UV rays for the ordinary person.
Note: The average daily UV index of 1 in April transform into the following instructions:
People with sensitive skin, children, and babies should always be protected from prolonged sun exposure. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
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FAQ

What is the average humidity in April in Juneau?

The average relative humidity in April is 90%.

How many days does it rain in April in Juneau?

In Juneau, Alaska, during April, the rain falls for 13.1 days and regularly aggregates up to 6.02" (153mm) of precipitation.

How much does it snow in Juneau in April?

In April, in Juneau, it is snowing for 15.9 days. Throughout April, 29.45" (748mm) of snow is accumulated.

What is the water temperature in April in Juneau?

In April, the average ocean temperature in Juneau, Alaska, is 41.4°F (5.2°C). At temperatures below 50°F (10°C), swimming in a suitably protected swimsuit is feasible; otherwise, cold shock and loss of breathing control are imminent. Even a short swim, without thermal protection, at temperatures around 55.4°F (13°C) is not comfortable.

How many hours of daylight does Juneau have in April?

The average day length in April in Juneau is 14h and 29min.

When is the sunrise / sunset in April in Juneau?

On the first day of April in Juneau, sunrise is at 6:23 am and sunset at 7:39 pm. On the last day of the month, sunrise is at 5:04 am and sunset at 8:44 pm AKDT.

How long on average sun shines in April in Juneau?

In April, the average sunshine duration in Juneau is 5.1h.

What are the months with the lowest UV index in Juneau?

The months with the lowest UV index in Juneau, Alaska, are January, April, October through December, with an average maximum UV index of 1.

What is the UV index intensity in April in Juneau?

In April, the average daily maximum UV index is 1. A UV Index value of 2, and less, symbolizes a minimal hazard to health from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average snowfall days
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in April
Juneau, AK

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).

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Average pressure in April
Juneau, AK

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).

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Average wind speed in April
Juneau, AK

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).

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Average humidity in April
Juneau, AK

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%).

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Average rainfall in April
Juneau, AK

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").

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Average rainfall days in April
Juneau, AK

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).

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Average snowfall in April
Juneau, AK

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").

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Average snowfall days in April
Juneau, AK

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).

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Average sea temperature in April
Juneau, AK

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).

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Average daylight in April /
Average sunshine in April
Juneau, AK

Average daylight in April / Average sunshine in April - Juneau, AK
  • Average daylight in April: 14h and 29min

The month with the longest days is June (Average daylight: 18h and 9min).
The month with the shortest days is December (Average daylight: 6h and 31min).

  • 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).

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Average sunshine days in April
Juneau, AK

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).

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Average UV index in April
Juneau, AK

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).

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Average cloud cover in April
Juneau, AK

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).

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Average visibility in April
Juneau, AK

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).

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