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

September weather forecast and climate
Barrow, AK

September, the first month of the autumn, in Barrow, is still a cold month, with average temperature varying between 28.6°F (-1.9°C) and 35.8°F (2.1°C).

Temperature

In Barrow, the average high-temperature marginally drops, from a chilly 43.9°F (6.6°C) in August, to a wintry 35.8°F (2.1°C). In September, in Barrow, the average low-temperature is 28.6°F (-1.9°C).

Rainfall

In Barrow, Alaska, in September, during 12 rainfall days, 0.7" (18mm) of precipitation is typically accumulated. Throughout the year, in Barrow, there are 91 rainfall days, and 4.5" (113.3mm) of precipitation is accumulated.

Snowfall

January through December are months with snowfall. In Barrow, 4.6" (116.8mm) of snow is typically accumulated. In Barrow, during the entire year, snow aggregates up to 38.3" (972.7mm).

Ocean temperature

Months with the warmest seawater in Barrow are August and September, with an average ocean temperature of 35.6°F (2°C).
Note: For swimming, this is considered very dangerous and immediately life-threatening. Total loss of breathing control instantly occurs, and clear thinking becomes almost impossible. A specialized swimsuit is obligatory to minimize thermal loss.

Daylight

In Barrow, the average length of the day is 13.4h.

Sunshine

The average sunshine in Barrow is 4h.

UV index

The average daily maximum UV index in Barrow is 1. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from the exposure to the Sun's UV rays for the ordinary person.
Note: The daily maximum UV index of 1 interpret into the following advice:
For the majority, extended sun exposure is not of great concern. Infants and people with sensitive skin must always be protected. 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 September in Barrow?

The average high-temperature, in September, in Barrow, is 35.8°F (2.1°C), while the average low-temperature is 28.6°F (-1.9°C).

How many days does it rain in September in Barrow?

In Barrow, Alaska, during September, the rain falls for 12 days and regularly aggregates up to 0.7" (18mm) of precipitation.

How much does it snow in Barrow in September?

In Barrow, in September, 4.6" (116.8mm) of snow is typically accumulated.

When is the ocean warmest in Barrow?

August and September, with an average ocean temperature of 35.6°F (2°C), are months with the warmest seawater in Barrow.

What is the water temperature in September in Barrow?

In Barrow, Alaska, in September, the average water temperature is 35.6°F (2°C). For swimming, this is considered life-threatening and very dangerous. The water feels painfully cold, and hyperventilation quickly occurs. A specialized swimsuit is mandatory to reduce thermal damage.

What is the average length of the day in September in Barrow?

The average length of the day in September in Barrow, Alaska, is 13.4h.

How long on average sun shines in September in Barrow?

In Barrow, the average sunshine in September is 4h.

What is the UV index intensity in September in Barrow?

In September, the average daily maximum UV index is 1. A UV Index estimate of 2, and below, represents a minimal hazard to health from the exposure to the Sun's UV rays.
Average temperature in September - Barrow, AK
  • Average high temperature in September: 35.8°F

The warmest month (with the highest average high temperature) is July (46.9°F).
The month with the lowest average high temperature is February (-8°F).

  • Average low temperature in September: 28.5°F

The month with the highest average low temperature is July (34.8°F).
The coldest month (with the lowest average low temperature) is February (-20.4°F).

Average rainfall in September - Barrow, AK
  • Average rainfall in September: 0.7"

The wettest month (with the highest rainfall) is August (1.1").
Driest months (with the lowest rainfall) are January, February, March and December (0.1").

Average rainfall days in September - Barrow, AK
  • Average rainfall days in September: 12 days

The month with the highest number of rainy days is October (13 days).
Months with the lowest number of rainy days are January, February, March and April (5 days).

Average snowfall in September - Barrow, AK
  • Average snowfall in September: 4.6"

The month with the highest snowfall is October (8.8").
The month with the lowest snowfall is July (0.2").

Average sea temperature in September - Barrow, AK
  • Average sea temperature in September: 36°F

Best months for swimming (with the highest average sea temperature) are August and September (36°F).
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: 13.4h

Months with the longest days are June and July (Average daylight: 24h).
The month with shortest days is December (Average daylight: 0h).

  • Average sunshine in September: 4h

Months with most sunshine are May, June and July (Average sunshine: 10h).
Months with least sunshine are January and December (Average sunshine: 0).

Average UV index in September - Barrow, AK
  • Average UV index in September: 1

Months with the highest UV index are June and July (UV index 3).
Months with the lowest UV index are January, February, October, November and December (UV index 0).