September weather forecastYakutat, AK
September
Weather in September
September in Yakutat, Alaska marks the beginning of autumn, with lower temperatures, increased rainfall, and shorter daylight hours. In a clear pivot from the summer, the average temperature drops to 54.9°F (12.7°C) indicating the onset of cooler days ahead. As rainfall intensifies, the skeletal traces of autumnal transformations become more noticeable in the landscape. Despite shorter daylight hours, the overall weather remains quite pleasing. As the month progresses, the first indicators of the approaching winter season can be spotted.Temperature
Upon the beginning of September, Yakutat's high-temperatures register at a fresh 54.9°F (12.7°C), closely mirroring the preceding month. Recording a slight drop from the daily maximum, Yakutat notes an average low temperature of 49.3°F (9.6°C) in the month of September.Humidity
In Yakutat, the average relative humidity in September is 77%.Rainfall
In Yakutat, in September, it is raining for 16.7 days, with typically 6.02" (153mm) of accumulated precipitation. Throughout the year, there are 171.7 rainfall days, and 60.71" (1542mm) of precipitation is accumulated.Snowfall
In Yakutat, snow does not fall in June through September.Ocean temperature
In Yakutat, in September, the average water temperature is 55.4°F (13°C).Note: Swimming in 55.4°F (13°C) can be lethal. Merely spending a few minutes in 55.4°F (13°C) waters feels harsh, and venturing below 50°F (10°C) might disrupt breathing control and bring about cold shock, contingent on individual resilience.
Daylight
In September, the average length of the day is 12h and 49min.On the first day of the month, sunrise is at 6:17 am and sunset at 8:19 pm. On the last day of September, sunrise is at 7:24 am and sunset at 6:53 pm AKDT.
Sunshine
In September, the average sunshine is 6.2h.UV index
In Yakutat, Alaska, the average daily maximum UV index in September is 3. A UV Index reading of 3 to 5 represents a medium vulnerability from unsafe exposure to UV radiation for average individuals.Note: A maximum high daily UV index of 3 during September translates into the following directions:
Safety measures are advised. Light-skinned individuals may experience burns in under half an hour. Avoiding direct sunlight during midday hours helps reduce the risk from intense UV radiation. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Yakutat, AK
- Average high temperature in September: 54.9°F
The warmest month (with the highest average high temperature) is July (59.4°F).
The month with the lowest average high temperature is January (34.9°F).
- Average low temperature in September: 49.3°F
The month with the highest average low temperature is August (53.1°F).
The coldest month (with the lowest average low temperature) is January (29.8°F).
Average pressure in September
Yakutat, AK
- Average pressure in September: 29.83"Hg
The month with the highest atmospheric pressure is July (30.02"Hg).
The month with the lowest atmospheric pressure is November (29.69"Hg).
Average wind speed in September
Yakutat, AK
- Average wind speed in September: 7.8mph
The windiest month (with the highest average wind speed) is November (11.1mph).
The calmest month (with the lowest average wind speed) is July (6.1mph).
Average humidity in September
Yakutat, AK
- Average humidity in September: 77%
The month with the highest relative humidity is July (83%).
The month with the lowest relative humidity is November (72%).
Average rainfall in September
Yakutat, AK
- Average rainfall in September: 6.02"
The wettest month (with the highest rainfall) is October (8.54").
The driest month (with the least rainfall) is June (2.32").
Average rainfall days in September
Yakutat, AK
- Average rainfall days in September: 16.7 days
The month with the highest number of rainy days is October (19.1 days).
The month with the least rainy days is February (10.1 days).
Average snowfall in September
Yakutat, AK
- Average snowfall in September: 0"
The month with the highest snowfall is January (9.53").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Yakutat, AK
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is March (9.7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average sea temperature in September
Yakutat, AK
- Average sea temperature in September: 55°F
The best month for swimming (with the highest average sea temperature) is August (57°F).
The coldest months (with the lowest average sea temperature) are January, February, March and April (43°F).
Average daylight in September /
Average sunshine in September
Yakutat, AK
- Average daylight in September: 12h and 48min
The month with the longest days is June (Average daylight: 18h and 36min).
The month with the shortest days is December (Average daylight: 6h and 12min).
- Average sunshine in September: 6h and 12min
The month with the most sunshine is June (Average sunshine: 7h and 42min).
The month with the least sunshine is December (Average sunshine: 2h and 24min).
Average sunshine days in September
Yakutat, AK
- Average sunshine days in September: 13.1 days
The month with the most sunshine days is May (16.7 days).
The month with the least sunshine days is November (10.3 days).
Average UV index in September
Yakutat, AK
- Average UV index in September: 3
The month with the highest UV index is July (UV index 4).
The months with the lowest UV index are January and November (UV index 1).
Average cloud cover in September
Yakutat, AK
- Average cloud cover in September: 57
The month with the most cloud cover is December (Cloud cover 67).
The month with the least cloud cover is May (Cloud cover 55).
Average visibility in September
Yakutat, AK
- Average visibility in September: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
