April weather forecast and climate
Ketchikan, AK

Beautiful and colorful houses along the waterfront boardwalk on Creek Street in Ketchikan, Alaska
Beautiful and colorful houses along the waterfront boardwalk on Creek Street in Ketchikan, Alaska

Weather in April

April is a frosty spring month in Ketchikan, Alaska, with average temperature ranging between min 37.2°F (2.9°C) and max 46°F (7.8°C).

Temperature

In Ketchikan, the average high-temperature in April slightly increases, from a wintry 40.3°F (4.6°C) in March, to a frosty 46°F (7.8°C). The average low-temperature, in Ketchikan, Alaska, is 37.2°F (2.9°C).

Humidity

In April, the average relative humidity in Ketchikan is 83%.

Rainfall

In Ketchikan, during April, the rain falls for 20.7 days and regularly aggregates up to 6.22" (158mm) of precipitation. Throughout the year, in Ketchikan, there are 221.8 rainfall days, and 80" (2032mm) of precipitation is accumulated.

Snowfall

January through May, November and December are months with snowfall. In Ketchikan, Alaska, in April, snow falls for 2.5 days, with typically accumulated 1.1" (28mm) of snow. Throughout the year, there are 40.7 snowfall days, and 48.35" (1228mm) of snow is accumulated.

Ocean temperature

In Ketchikan, in April, the average water temperature is 44.2°F (6.8°C).
Note: Swimming in 44.2°F (6.8°C) is considered life-threatening. Even a few minutes in 55.4°F (13°C) water is uncomfortable, and swimming below 50°F (10°C) may cause total loss of breathing control and cold shock, depending on a person's physique.

Daylight

In Ketchikan, the average length of the day is 14.2h.

Sunshine

In Ketchikan, the average sunshine in April is 6.1h.

UV index

In April, the average daily maximum UV index is 2. A UV Index estimate of 2, and below, represents a minimal health vulnerability from unprotected exposure to the Sun's UV rays for ordinary individuals.
Note: The daily maximum UV index of 2 in April interpret into the following advice:
For the majority, extended sun exposure is not of great concern. Infants and people with sensitive skin must always be protected. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun. 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 temperature in April in Ketchikan?

The average high-temperature, in April, in Ketchikan, is 46°F (7.8°C), while the average low-temperature is 37.2°F (2.9°C).

What is the average humidity in April in Ketchikan?

In Ketchikan, the average relative humidity in April is 83%.

How many days does it rain in April in Ketchikan?

In Ketchikan, Alaska, in April, during 20.7 rainfall days, 6.22" (158mm) of precipitation is typically accumulated.

How many days does it snow in April in Ketchikan?

In Ketchikan, Alaska, during April, snow falls for 2.5 days and regularly aggregates up to 1.1" (28mm) of snow.

What is the water temperature in April in Ketchikan?

In April, the average ocean temperature in Ketchikan, Alaska, is 44.2°F (6.8°C). Swimming in 44.2°F (6.8°C) is considered dangerous. Unprotected immersion in temperatures below 50°F (10°C) causes quickly maximum intensity cold shock with hyperventilation.

What is the average length of the day in April in Ketchikan?

The average length of the day in April in Ketchikan, Alaska, is 14.2h.

How long on average sun shines in April in Ketchikan?

The average sunshine in April in Ketchikan is 6.1h.

What is the UV index reading in April in Ketchikan?

In Ketchikan, Alaska, the average daily maximum UV index in April is 2. A UV Index estimate of 2, and below, represents a minimal hazard to health from the exposure to the Sun's UV rays.

Average temperature in April
Ketchikan, AK

Average temperature in April - Ketchikan, AK
  • Average high temperature in April: 46°F

The warmest months (with the highest average high temperature) are July and August (60.8°F).
The month with the lowest average high temperature is December (35.8°F).

  • Average low temperature in April: 37.2°F

The month with the highest average low temperature is August (52°F).
The coldest month (with the lowest average low temperature) is February (30.6°F).

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Average pressure in April
Ketchikan, AK

Average pressure in April - Ketchikan, AK
  • Average pressure in April: 29.94"

The month with the highest atmospheric pressure is July (30.06").
The month with the lowest atmospheric pressure is November (29.8").

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Average wind speed in April
Ketchikan, AK

Average wind speed in April - Ketchikan, AK
  • Average wind speed in April: 6.9mph

The windiest month (with the highest average wind speed) is January (8.7mph).
The calmest months (with the lowest average wind speed) are July and August (5.3mph).

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Average humidity in April
Ketchikan, AK

Average humidity in April - Ketchikan, AK
  • Average humidity in April: 83%

The month with the highest relative humidity is January (88%).
The month with the lowest relative humidity is May (82%).

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Average rainfall in April
Ketchikan, AK

Average rainfall in April - Ketchikan, AK
  • Average rainfall in April: 6.22"

The wettest month (with the highest rainfall) is January (9.69").
The driest month (with the least rainfall) is May (3.46").

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Average rainfall days in April
Ketchikan, AK

Average rainfall days in April - Ketchikan, AK
  • Average rainfall days in April: 20.7 days

The month with the highest number of rainy days is November (21.4 days).
The month with the least rainy days is February (14.2 days).

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Average snowfall in April
Ketchikan, AK

Average snowfall in April - Ketchikan, AK
  • Average snowfall in April: 1.1"

The month with the highest snowfall is February (13.11").
Months with the least snowfall are June, July, August, September and October (0").

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Average snowfall days in April
Ketchikan, AK

Average snowfall days in April - Ketchikan, AK
  • Average snowfall days in April: 2.5 days

The month with the highest number of snowfall days is March (10.8 days).
Months with the least snowfall days are June, July, August and September (0 days).

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Average sea temperature in April
Ketchikan, AK

Average sea temperature in April - Ketchikan, AK
  • Average sea temperature in April: 44.1°F

The best month for swimming (with the highest average sea temperature) is August (55.9°F).
The coldest month (with the lowest average sea temperature) is March (42.5°F).

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

Average daylight in April / Average sunshine in April - Ketchikan, AK
  • Average daylight in April: 14.2h

The month with the longest days is June (Average daylight: 17.4h).
The month with the shortest days is December (Average daylight: 7.2h).

  • Average sunshine in April: 6.1h

The month with the most sunshine is May (Average sunshine: 7.2h).
The month with the least sunshine is January (Average sunshine: 3h).

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Average sunshine days in April
Ketchikan, AK

Average sunshine days in April - Ketchikan, AK
  • Average sunshine days in April: 7.4 days

The month with the most sunshine days is July (11.9 days).
The month with the least sunshine days is November (5.6 days).

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Average UV index in April
Ketchikan, AK

Average UV index in April - Ketchikan, AK
  • Average UV index in April: 2

Months with the highest UV index are July and August (UV index 4).
Months with the lowest UV index are January, November and December (UV index 1).

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Average cloud cover in April
Ketchikan, AK

Average cloud cover in April - Ketchikan, AK
  • Average cloud cover in April: 61

The month with the most cloud cover is January (Cloud cover 71).
The month with the least cloud cover is May (Cloud cover 55).

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Average visibility in April
Ketchikan, AK

Average visibility in April - Ketchikan, AK
  • Average visibility in April: 6mi

Months with the highest visibility are February, March, April, May, June, September, October, November and December (6mi).
Months with the lowest visibility are January, July and August (5mi).

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