Contents
- Weather in April
- Frequently asked questions
- Average temperature in April
- Average pressure in April
- Average wind speed in April
- Average humidity in April
- Average rainfall in April
- Average rainfall days in April
- Average snowfall in April
- Average snowfall days in April
- Average sea temperature in April
- Average daylight in April
- Average sunshine in April
- Average sunshine days in April
- Average UV index in April
- Average cloud cover in April
- Average visibility in April
Weather in April
Temperature
The shift into April is accompanied by a modest temperature increase, with the average high-temperature edging up from an icy 40.3°F (4.6°C) in March to a frosty 46°F (7.8°C). Ketchikan, during the nights of April, averages a temperature close to its daytime high, at an icy 37.2°F (2.9°C).Humidity
In April, the average relative humidity is 83%.Rainfall
In April, the rain falls for 20.7 days. Throughout April, 6.22" (158mm) of precipitation is accumulated. Throughout the year, in Ketchikan, there are 221.8 rainfall days, and 80" (2032mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through May, November and December. In April, it is snowing for 2.5 days. Throughout April, 1.1" (28mm) of snow is accumulated. Throughout the year, there are 40.7 snowfall days, and 48.35" (1228mm) of snow is accumulated.Ocean temperature
In Ketchikan, the average seawater temperature in April is 44.2°F (6.8°C).Note: Engaging in a swim in 44.2°F (6.8°C) can threaten life. Brief exposure to 55.4°F (13°C) waters is uneasy, and submersion below 50°F (10°C) can lead to cold shock and disrupted breathing patterns, varying by individual.
Daylight
The average length of the day in April is 14h and 13min.On the first day of April, sunrise is at 6:15 am and sunset at 7:25 pm. On the last day of the month, sunrise is at 5:04 am and sunset at 8:22 pm AKDT.
Sunshine
In April, the average sunshine is 6.1h.UV index
The average daily maximum UV index in April is 2. A UV Index of 2, and less, symbolizes a low threat to health from exposure to the Sun's UV radiation for ordinary individuals.Note: The daily high UV index of 2 during April translates into the following recommendations:
Children must always have sun protection, unlike most people, who can tolerate up to an hour in the sun without any burns. Direct Sun exposure should be minimized especially during midday when radiation is most intense. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses. Be informed! The Sun's UV radiation can be nearly doubled due to the reflection from snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Ketchikan in April?
What is the average humidity in April?
How many days does it rain in April?
How many days does it snow in April?
How cold is the water in April?
How many hours of daylight does Ketchikan have in April?
What time are sunrise and sunset in April?
How long on average sun shines in April?
How high is the UV index in April in Ketchikan?
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).
Average pressure in April
Ketchikan, AK
- Average pressure in April: 29.94"Hg
The month with the highest atmospheric pressure is July (30.06"Hg).
The month with the lowest atmospheric pressure is November (29.8"Hg).
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).
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%).
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").
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).
Average snowfall in April
Ketchikan, AK
- Average snowfall in April: 1.1"
The month with the highest snowfall is February (13.11").
The months with the least snowfall are June, July, August, September and October (0").
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).
The months with the least snowfall days are June, July, August and September (0 days).
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: 14h and 1min
The month with the longest days is June (Average daylight: 17h and 24min).
The month with the shortest days is December (Average daylight: 7h and 12min).
- Average sunshine in April: 6h and 1min
The month with the most sunshine is May (Average sunshine: 7h and 12min).
The month with the least sunshine is January (Average sunshine: 3h and 0min).
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).
Average UV index in April
Ketchikan, AK
- Average UV index in April: 2
The months with the highest UV index are July and August (UV index 4).
The months with the lowest UV index are January, November and December (UV index 1).
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).
Average visibility in April
Ketchikan, AK
- Average visibility in April: 6mi
The months with the highest visibility are February, March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are January, July and August (5mi).
Ketchikan, Alaska, USA
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