Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average snowfall in September
- Average snowfall days in September
- Average sea temperature in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
Weather in September
Temperature
The commencement of September in Barrow introduces an average high-temperature of a still cold 37.9°F (3.3°C), closely mirroring the preceding month. In Barrow, the nighttime temperature shows a slight difference from the daytime high, averaging to a still icy 34°F (1.1°C) during September.Humidity
In September, the average relative humidity in Barrow is 84%.Rainfall
In Barrow, in September, during 9.2 rainfall days, 0.83" (21mm) of precipitation is typically accumulated. In Barrow, during the entire year, the rain falls for 58.5 days and collects up to 6.81" (173mm) of precipitation.Snowfall
Months with snowfall are January through December. In Barrow, in September, snow falls for 10.5 days, with typically accumulated 1.46" (37mm) of snow. Throughout the year, there are 125.6 snowfall days, and 17.13" (435mm) of snow is accumulated.Ocean temperature
August and September, with an average ocean temperature of 35.6°F (2°C), are months with the warmest seawater in Barrow.Note: In water-based activities like swimming, this poses significant life risks. The cold water results in agonizing discomfort and quick hyperventilation. A specialized swimsuit is crucial to reduce the potential thermal damage.
Daylight
In Barrow, Alaska, the average length of the day in September is 13h and 23min.On the first day of September, sunrise is at 6:39 am and sunset at 10:14 pm. On the last day of the month, sunrise is at 8:44 am and sunset at 7:48 pm AKDT.
Sunshine
The average sunshine in September is 3.6h.UV index
April, June, July and September, with an average maximum UV index of 2, are months with the highest UV index. A UV Index estimate of 2, and below, represents a minimal health vulnerability from unsafe exposure to UV radiation for ordinary individuals.Note: A maximum daily UV index of 2 during September morphs into the following directions:
Those with sensitive skin, infants, and children require constant safeguarding from prolonged sun exposure. The Sun is at its harshest during midday; protect yourself by staying in shaded areas and minimizing exposure. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation. Heads up! The UV radiation from the Sun can almost be doubled by snow reflection.
Frequently asked questions
Is September cold in Barrow?
What is the average humidity in September in Barrow?
How many days does it rain in September in Barrow?
How many days does it snow in September in Barrow?
When is the ocean warmest in Barrow?
What is the ocean temperature in September in Barrow?
How many hours of daylight does Barrow have in September?
When is the sunrise / sunset in September in Barrow?
How long on average sun shines in September in Barrow?
What is the month with the highest UV index in Barrow?
What is the UV index intensity in September in Barrow?
Average temperature in September
Barrow, AK
- Average high temperature in September: 37.9°F
The warmest month (with the highest average high temperature) is July (43.3°F).
The month with the lowest average high temperature is January (-3.3°F).
- Average low temperature in September: 34°F
The month with the highest average low temperature is July (37°F).
The coldest month (with the lowest average low temperature) is January (-11.2°F).
Average pressure in September
Barrow, AK
- Average pressure in September: 29.85"Hg
The months with the highest atmospheric pressure are January and March (30.09"Hg).
The month with the lowest atmospheric pressure is September (29.85"Hg).
Average wind speed in September
Barrow, AK
- Average wind speed in September: 13mph
The windiest month (with the highest average wind speed) is October (15.3mph).
The calmest month (with the lowest average wind speed) is May (10.6mph).
Average humidity in September
Barrow, AK
- Average humidity in September: 84%
The months with the highest relative humidity are January, February, March and December (95%).
The month with the lowest relative humidity is June (82%).
Average rainfall in September
Barrow, AK
- Average rainfall in September: 0.83"
The wettest month (with the highest rainfall) is August (1.06").
The driest month (with the least rainfall) is January (0.2").
Average rainfall days in September
Barrow, AK
- Average rainfall days in September: 9.2 days
The month with the highest number of rainy days is August (11.9 days).
The month with the least rainy days is December (0.6 days).
Average snowfall in September
Barrow, AK
- Average snowfall in September: 1.46"
The month with the highest snowfall is October (3.15").
The month with the least snowfall is July (0.08").
Average snowfall days in September
Barrow, AK
- Average snowfall days in September: 10.5 days
The month with the highest number of snowfall days is November (16.9 days).
The month with the least snowfall days is July (1.3 days).
Average sea temperature in September
Barrow, AK
- Average sea temperature in September: 36°F
The best months for swimming (with the highest average sea temperature) are August and September (36°F).
The coldest months (with the lowest average sea temperature) are January, February, March, April, May, June and December (28°F).
Average daylight in September /
Average sunshine in September
Barrow, AK
- Average daylight in September: 13h and 2min
The month with the longest days is August (Average daylight: 18h and 48min).
The months with the shortest days are June, July and December (Average daylight: 0h and 0min).
- Average sunshine in September: 3h and 4min
The month with the most sunshine is April (Average sunshine: 6h and 6min).
The month with the least sunshine is December (Average sunshine: 0h and 18min).
Average sunshine days in September
Barrow, AK
- Average sunshine days in September: 9.2 days
The month with the most sunshine days is January (19.6 days).
The month with the least sunshine days is October (7.9 days).
Average UV index in September
Barrow, AK
- Average UV index in September: 2
The months with the highest UV index are April, June, July and September (UV index 2).
The months with the lowest UV index are January, February, March, May, August, October, November and December (UV index 1).
Average cloud cover in September
Barrow, AK
- Average cloud cover in September: 75
The month with the most cloud cover is December (Cloud cover 84).
The month with the least cloud cover is June (Cloud cover 47).
Average visibility in September
Barrow, AK
- Average visibility in September: 6mi
The months with the highest visibility are May, June, July, August and September (6mi).
The months with the lowest visibility are January and March (4mi).
Barrow, Alaska, USA
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