September weather forecast
Kodiak, AK

Natural forests, mountains, and distant hill ranges surrounding the small town of Kodiak in Alaska
Natural forests, mountains, and distant hill ranges surrounding the small town of Kodiak in Alaska

Weather in September

September, the first month of the autumn in Kodiak, is still a cool month, with temperature in the range of an average high of 53.1°F (11.7°C) and an average low of 47.7°F (8.7°C).

Temperature

In September, the average high-temperature is relatively the same as in August - a cool 53.1°F (11.7°C). In September, the average low-temperature is 47.7°F (8.7°C).

Humidity

In September, the average relative humidity is 83%.

Rainfall

In Kodiak, in September, it is raining for 17.6 days, with typically 3.27" (83mm) of accumulated precipitation. In Kodiak, Alaska, during the entire year, the rain falls for 171.2 days and collects up to 37.32" (948mm) of precipitation.

Snowfall

Months with snowfall in Kodiak are January through May, September through December. September is the first month it typically snows in Kodiak, Alaska. Throughout September, in the average 0.1 snowfall days, it receives 0.08" (2mm) of snow. Throughout the year, there are 35.1 snowfall days, and 13.74" (349mm) of snow is accumulated.

Ocean temperature

In Kodiak, Alaska, in September, the average water temperature is 51.1°F (10.6°C).
Note: Swimming in 51.1°F (10.6°C) is considered life-threatening. Even a few minutes in 55.4°F (13°C) water is uncomfortable, and swimming below 50°F (10°C) may cause total loss of breathing control and cold shock, depending on a person's physique.

Daylight

The average length of the day in September is 12h and 46min.
On the first day of the month, sunrise is at 7:11 am and sunset at 9:07 pm. On the last day of September, in Kodiak, sunrise is at 8:12 am and sunset at 7:46 pm AKDT.

Sunshine

In Kodiak, the average sunshine in September is 5.8h.

UV index

The months with the highest UV index are June through September, with an average maximum UV index of 3. A UV Index value of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV rays for ordinary individuals.
Note: In September, the average maximum UV index of 3 translate into the following recommendations:
Take precautions - Protection against skin and eye damage is obliged. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
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FAQ

What is the average humidity in September in Kodiak?

In September, the average relative humidity is 83%.

How much does it rain in Kodiak in September?

In Kodiak, Alaska, in September, it is raining for 17.6 days, with typically 3.27" (83mm) of accumulated precipitation.

When does it start to snow in Kodiak?

September is the first month it typically snows in Kodiak. Throughout September, in the average 0.1 snowfall days, it receives 0.08" (2mm) of snow.

What is the ocean temperature in September in Kodiak?

In Kodiak, Alaska, in September, the average water temperature is 51.1°F (10.6°C). At temperatures below 50°F (10°C), swimming in a suitably protected swimsuit is feasible; otherwise, cold shock and loss of breathing control are imminent. Even a short swim, without thermal protection, at temperatures around 55.4°F (13°C) is not comfortable.

How many hours of daylight does Kodiak have in September?

In Kodiak, Alaska, the average day length in September is 12h and 46min.

What time are sunrise and sunset in September in Kodiak?

In September, on the first day of the month, sunrise is at 7:11 am and sunset at 9:07 pm. On the last day of the month, in Kodiak, sunrise is at 8:12 am and sunset at 7:46 pm AKDT.

How long on average sun shines in September in Kodiak?

In Kodiak, the average sunshine duration in September is 5.8h.

What is the month with the highest UV index in Kodiak?

The months with the highest UV index in Kodiak are June through September, with an average maximum UV index of 3.

How high is the UV index in September in Kodiak?

The average daily maximum UV index in September is 3. A UV Index value of 3 to 5 symbolizes a moderate health threat from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average snowfall days
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Kodiak, AK

Average temperature in September - Kodiak, AK
  • Average high temperature in September: 53.1°F

The warmest month (with the highest average high temperature) is August (57.6°F).
The month with the lowest average high temperature is January (35.4°F).

  • Average low temperature in September: 47.7°F

The month with the highest average low temperature is August (50.7°F).
The coldest month (with the lowest average low temperature) is March (30.6°F).

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Average pressure in September
Kodiak, AK

Average pressure in September - Kodiak, AK
  • Average pressure in September: 29.71"Hg

The month with the highest atmospheric pressure is July (29.98"Hg).
The month with the lowest atmospheric pressure is December (29.55"Hg).

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Average wind speed in September
Kodiak, AK

Average wind speed in September - Kodiak, AK
  • Average wind speed in September: 10.3mph

The windiest month (with the highest average wind speed) is December (14.2mph).
The calmest month (with the lowest average wind speed) is July (7.8mph).

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Average humidity in September
Kodiak, AK

Average humidity in September - Kodiak, AK
  • Average humidity in September: 83%

The month with the highest relative humidity is July (86%).
The months with the lowest relative humidity are March and November (80%).

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Average rainfall in September
Kodiak, AK

Average rainfall in September - Kodiak, AK
  • Average rainfall in September: 3.27"

The wettest months (with the highest rainfall) are October and November (4.53").
The driest month (with the least rainfall) is July (1.85").

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Average rainfall days in September
Kodiak, AK

Average rainfall days in September - Kodiak, AK
  • Average rainfall days in September: 17.6 days

The month with the highest number of rainy days is September (17.6 days).
The month with the least rainy days is March (10.8 days).

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Average snowfall in September
Kodiak, AK

Average snowfall in September - Kodiak, AK
  • Average snowfall in September: 0.08"

The month with the highest snowfall is March (3.15").
The months with the least snowfall are June, July and August (0").

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Average snowfall days in September
Kodiak, AK

Average snowfall days in September - Kodiak, AK
  • Average snowfall days in September: 0.1 days

The month with the highest number of snowfall days is March (8.5 days).
The months with the least snowfall days are June, July and August (0 days).

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Average sea temperature in September
Kodiak, AK

Average sea temperature in September - Kodiak, AK
  • Average sea temperature in September: 51.1°F

The best month for swimming (with the highest average sea temperature) is August (53.4°F).
The coldest month (with the lowest average sea temperature) is March (39.5°F).

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Average daylight in September /
Average sunshine in September
Kodiak, AK

Average daylight in September / Average sunshine in September - Kodiak, AK
  • Average daylight in September: 12h and 46min

The month with the longest days is June (Average daylight: 18h and 0min).
The month with the shortest days is December (Average daylight: 6h and 39min).

  • Average sunshine in September: 5h and 48min

The month with the most sunshine is July (Average sunshine: 8h and 18min).
The months with the least sunshine are January and December (Average sunshine: 2h and 36min).

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Average sunshine days in September
Kodiak, AK

Average sunshine days in September - Kodiak, AK
  • Average sunshine days in September: 11.5 days

The month with the most sunshine days is July (14.7 days).
The month with the least sunshine days is April (10.7 days).

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Average UV index in September
Kodiak, AK

Average UV index in September - Kodiak, AK
  • Average UV index in September: 3

The months with the highest UV index are June, July, August and September (UV index 3).
The month with the lowest UV index is January (UV index 1).

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Average cloud cover in September
Kodiak, AK

Average cloud cover in September - Kodiak, AK
  • Average cloud cover in September: 52

The month with the most cloud cover is January (Cloud cover 63).
The month with the least cloud cover is September (Cloud cover 52).

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Average visibility in September
Kodiak, AK

Average visibility in September - Kodiak, 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).

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