August weather forecastKetchikan, AK
August
Weather in August
August in Ketchikan maintains the summer spirit, with temperatures identical to July, fluctuating between 52°F (11.1°C) and 60.8°F (16°C). Despite rainfall becoming considerably heavier, 7.01" (178mm) compared to July, the warmth persists. Although the daylight hours reduce to 14.9, the ambiance remains largely bright and congenial. This period witnesses enriching weather that justifies its place as a haven for nature enthusiasts.Temperature
Ketchikan's highest average temperatures are recorded in July and August, reaching a high of 60.8°F (16°C).Humidity
In Ketchikan, the average relative humidity in August is 87%.Rainfall
In Ketchikan, during August, the rain falls for 18.6 days and regularly aggregates up to 7.01" (178mm) of precipitation. In Ketchikan, during the entire year, the rain falls for 221.8 days and collects up to 80" (2032mm) of precipitation.Snowfall
June through October are months without snowfall.Ocean temperature
With an average ocean temperature of 55.9°F (13.3°C), August is the month with the warmest seawater in Ketchikan.Note: Beware of 55.9°F (13.3°C) waters at 55.4°F (13°C), they're uninviting, and a dip below 50°F (10°C) has risks of breath loss and cold shock, contingent on health.
Daylight
In Ketchikan, the average length of the day in August is 14h and 55min.On the first day of the month, sunrise is at 4:55 am and sunset at 8:50 pm. On the last day of August, sunrise is at 5:52 am and sunset at 7:41 pm AKDT.
Sunshine
In August, the average sunshine is 7h.UV index
July and August, with an average maximum UV index of 4, are months with the highest UV index. A UV Index reading of 3 to 5 represents a moderate health risk from unsafe exposure to UV radiation for the ordinary person.Note: The maximum UV index, 4 during August, leads to the following recommendations:
Guard yourself - An obligation to protect skin and eyes from harm exists. Sun exposure should be minimized, especially during midday, to avoid harmful UV radiation. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in August
Ketchikan, AK
- Average high temperature in August: 60.8°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 August: 52°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 August
Ketchikan, AK
- Average pressure in August: 30"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 August
Ketchikan, AK
- Average wind speed in August: 5.3mph
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 August
Ketchikan, AK
- Average humidity in August: 87%
The month with the highest relative humidity is January (88%).
The month with the lowest relative humidity is May (82%).
Average rainfall in August
Ketchikan, AK
- Average rainfall in August: 7.01"
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 August
Ketchikan, AK
- Average rainfall days in August: 18.6 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 August
Ketchikan, AK
- Average snowfall in August: 0"
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 August
Ketchikan, AK
- Average snowfall days in August: 0 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 August
Ketchikan, AK
- Average sea temperature in August: 55.9°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 August /
Average sunshine in August
Ketchikan, AK
- Average daylight in August: 14h and 54min
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 August: 7h and 0min
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 August
Ketchikan, AK
- Average sunshine days in August: 11.4 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 August
Ketchikan, AK
- Average UV index in August: 4
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 August
Ketchikan, AK
- Average cloud cover in August: 57
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 August
Ketchikan, AK
- Average visibility in August: 5mi
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).
