September weather forecast and climate
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 also a fresh month, with average temperature fluctuating between 47.7°F (8.7°C) and 53.1°F (11.7°C).

Temperature

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

Humidity

In September, the average relative humidity in Kodiak is 83%.

Rainfall

In Kodiak, during September, the rain falls for 17.6 days and regularly aggregates up to 3.27" (83mm) of precipitation. Throughout the year, there are 171.2 rainfall days, and 37.32" (948mm) of precipitation is accumulated.

Snowfall

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

Ocean temperature

In September, the average ocean temperature in Kodiak is 51.1°F (10.6°C).
Note: 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.

Daylight

The average length of the day in Kodiak is 12.7h.

Sunshine

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

UV index

Months with the highest UV index are June through September, with an average maximum UV index of 3. A UV Index of 3 to 5 symbolizes a moderate health risk from unsafe exposure to the UV radiation for the average person.
Note: The average daily UV index of 3 in September transform into the following instructions:
Take precautions - Protection against the skin and eye damage is obliged. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
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FAQ

What is the temperature in September in Kodiak?

The average high-temperature, in September, in Kodiak, Alaska, is 53.1°F (11.7°C), while the average low-temperature is 47.7°F (8.7°C).

What is the average humidity in September in Kodiak?

The average relative humidity in September in Kodiak, Alaska, is 83%.

How many days does it rain in September in Kodiak?

In Kodiak, during September, the rain falls for 17.6 days and regularly aggregates up to 3.27" (83mm) of precipitation.

When does it start to snow in Kodiak?

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

How cold is the water in September in Kodiak?

In Kodiak, Alaska, the average seawater temperature in September is 51.1°F (10.6°C). Swimming in 51.1°F (10.6°C) is considered dangerous. Unprotected immersion in temperatures below 50°F (10°C) causes quickly maximum intensity cold shock with hyperventilation.

How many hours of daylight does Kodiak have in September?

In Kodiak, the average length of the day in September is 12.7h.

How long on average sun shines in September in Kodiak?

The average sunshine in September is 5.8h.

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

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

What is the UV index intensity in September in Kodiak?

In Kodiak, Alaska, the average daily maximum UV index in September is 3. A UV Index of 3 to 5 symbolizes a moderate vulnerability from the exposure to the Sun's UV rays.

Average temperature in September
Kodiak, AK

Average temperature in September - Kodiak, AK
  • Average high temperature in September: 11.7°C

The warmest month (with the highest average high temperature) is August (14.2°C).
The month with the lowest average high temperature is January (1.9°C).

  • Average low temperature in September: 8.7°C

The month with the highest average low temperature is August (10.4°C).
The coldest month (with the lowest average low temperature) is March (-0.8°C).

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Average pressure in September
Kodiak, AK

Average pressure in September - Kodiak, AK
  • Average pressure in September: 1006.1mbar

The month with the highest atmospheric pressure is July (1015.2mbar).
The month with the lowest atmospheric pressure is December (1000.7mbar).

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Average wind speed in September
Kodiak, AK

Average wind speed in September - Kodiak, AK
  • Average wind speed in September: 16.5km/h

The windiest month (with the highest average wind speed) is December (22.9km/h).
The calmest month (with the lowest average wind speed) is July (12.5km/h).

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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%).
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: 83mm

The wettest months (with the highest rainfall) are October and November (115mm).
The driest month (with the least rainfall) is July (47mm).

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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: 2mm

The month with the highest snowfall is March (80mm).
Months with the least snowfall are June, July and August (0mm).

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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).
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: 10.6°C

The best month for swimming (with the highest average sea temperature) is August (11.9°C).
The coldest month (with the lowest average sea temperature) is March (4.2°C).

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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: 12.7h

The month with the longest days is June (Average daylight: 18h).
The month with the shortest days is December (Average daylight: 6.6h).

  • Average sunshine in September: 5.8h

The month with the most sunshine is July (Average sunshine: 8.3h).
Months with the least sunshine are January and December (Average sunshine: 2.6).

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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

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: 9km

Months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (9km).
Months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (9km).

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