Ketchikan
Alaska, USA
Long-term weather forecast
Long-term weather forecast

April weather forecast and climate
Ketchikan, AK

Beautiful and colorful houses along the iconic waterfront boardwalk on Creek Street in Ketchikan, Alaska
Beautiful and colorful houses along the iconic waterfront boardwalk on Creek Street in Ketchikan, Alaska
April, like March, is another chilly spring month in Ketchikan, Alaska, with average temperature fluctuating between 49.3°F (9.6°C) and 36.7°F (2.6°C).

Temperature

In April, the average high-temperature slightly increases, from 43.5°F (6.4°C) in March, to a still frosty 49.3°F (9.6°C). In April, in Ketchikan, Alaska, the average low-temperature is 36.7°F (2.6°C).

Rainfall

In April, the rain falls for 19 days. Throughout April, 11.2" (284.2mm) of precipitation is accumulated. Throughout the year, in Ketchikan, there are 229 rainfall days, and 153.2" (3892.3mm) of precipitation is accumulated.

Snowfall

Months with snowfall in Ketchikan are January through May, October through December. In Ketchikan, 0.8" (20.3mm) of snow is typically accumulated. In Ketchikan, Alaska, during the entire year, snow aggregates up to 39.5" (1003.2mm).

Ocean temperature

In Ketchikan, the average seawater 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

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

Sunshine

In April, the average sunshine is 5h.

UV index

The average daily maximum UV index in Ketchikan is 3. A UV Index reading of 3 to 5 represents a moderate threat to health from unsafe exposure to the UV radiation for the ordinary person.
Note: The average daily UV index of 3 in April transform into the following instructions:
Take precautions - Protection against sun damage is advised. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. 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. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.

What is the temperature in April in Ketchikan?

The average high-temperature, in April, is 49.3°F (9.6°C), while the average low-temperature is 36.7°F (2.6°C).

How many days does it rain in April in Ketchikan?

In Ketchikan, Alaska, in April, during 19 rainfall days, 11.2" (284.2mm) of precipitation is typically accumulated.

How much does it snow in Ketchikan in April?

During April, Ketchikan regularly aggregates up to 0.8" (20.3mm) of snow.

What is the water temperature in April in Ketchikan?

In Ketchikan, Alaska, in April, the average water temperature is 44.2°F (6.8°C). 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.

How many hours of daylight does Ketchikan have in April?

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

How many hours of sunshine does Ketchikan have in April?

The average sunshine in April in Ketchikan is 5h.

How high is the UV index in April in Ketchikan?

The average daily maximum UV index in April in Ketchikan is 3. A UV Index of 3 to 5 symbolizes a medium hazard to health from unsafe exposure to the Sun's UV rays.
Average temperature in April - Ketchikan, AK
  • Average high temperature in April: 49.3°F

The warmest month (with the highest average high temperature) is August (64.5°F).
The month with the lowest average high temperature is January (38.4°F).

  • Average low temperature in April: 36.7°F

The month with the highest average low temperature is August (52.1°F).
The coldest month (with the lowest average low temperature) is January (28.8°F).

Average rainfall in April - Ketchikan, AK
  • Average rainfall in April: 11.2"

The wettest month (with the highest rainfall) is October (22.2").
Driest months (with the lowest rainfall) are June and July (7.4").

Average rainfall days in April - Ketchikan, AK
  • Average rainfall days in April: 19 days

The month with the highest number of rainy days is October (24 days).
The month with the lowest number of rainy days is July (15 days).

Average snowfall in April - Ketchikan, AK
  • Average snowfall in April: 0.8"

The month with the highest snowfall is January (13.3").
Months with the lowest snowfall are June, July, August and September (0").

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).

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 shortest days is December (Average daylight: 7.2h).

  • Average sunshine in April: 5h

The month with most sunshine is May (Average sunshine: 6h).
The month with least sunshine is December (Average sunshine: 1h).

Average UV index in April - Ketchikan, AK
  • Average UV index in April: 3

The month with the highest UV index is July (UV index 6).
Months with the lowest UV index are January and December (UV index 0).