September weather forecast and climate
Valdez, AK

Lake water and grown-in surface vegetation in Valdez Province, Alaska
Lake water and grown-in surface vegetation in Valdez Province, Alaska

Weather in September

The first month of the autumn, September, is still a chilly month in Valdez, Alaska, with temperature in the range of an average low of 36.3°F (2.4°C) and an average high of 43.9°F (6.6°C).

Temperature

In Valdez, the average high-temperature in September slightly decreases, from a cool 50.5°F (10.3°C) in August, to a frosty 43.9°F (6.6°C). The average low-temperature, in Valdez, is 36.3°F (2.4°C).

Humidity

In September, the average relative humidity in Valdez is 85%.

Rainfall

In September, the rain falls for 18.5 days. Throughout September, 6.89" (175mm) of precipitation is accumulated. In Valdez, Alaska, during the entire year, the rain falls for 167.5 days and collects up to 56.73" (1441mm) of precipitation.

Snowfall

Months with snowfall 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 0.16" (4mm) of snow. Throughout the year, there are 88.9 snowfall days, and 114.06" (2897mm) of snow is accumulated.

Ocean temperature

In September, the average ocean temperature in Valdez, Alaska, is 53.2°F (11.8°C).
Note: Swimming in 53.2°F (11.8°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

In September, the average length of the day in Valdez is 12.8h.

Sunshine

The average sunshine in Valdez is 6.2h.

UV index

The average daily maximum UV index in September is 2. A UV Index estimate of 2, and below, represents a minimal health hazard from unsafe exposure to the UV radiation for the ordinary person.
Note: The average daily UV index of 2 transform into the following instructions:
Extended sun exposure is not an issue for the majority. Children, infants, and fair-skinned individuals always need to be protected. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. 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. 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 Valdez?

In Valdez, Alaska, in September, the average high-temperature is 43.9°F (6.6°C), and the average low-temperature is 36.3°F (2.4°C).

What is the average humidity in September in Valdez?

In September, the average relative humidity is 85%.

How many days does it rain in September in Valdez?

In Valdez, Alaska, during September, the rain falls for 18.5 days and regularly aggregates up to 6.89" (175mm) of precipitation.

When does it start snowing in Valdez?

September is the first month it typically snows in Valdez. Throughout September, in the average 0.1 snowfall days, it receives 0.16" (4mm) of snow.

What is the ocean temperature in September in Valdez?

In Valdez, in September, the average water temperature is 53.2°F (11.8°C). Swimming in 53.2°F (11.8°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.

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

In Valdez, Alaska, the average length of the day in September is 12.8h.

How long on average sun shines in September in Valdez?

In Valdez, the average sunshine in September is 6.2h.

What is the UV index reading in September in Valdez?

In September, the average daily maximum UV index in Valdez, Alaska, is 2. A UV Index reading of 2, and below, represents a low health risk from the exposure to the Sun's UV rays.

Average temperature in September
Valdez, AK

Average temperature in September - Valdez, AK
  • Average high temperature in September: 43.9°F

The warmest month (with the highest average high temperature) is July (53.2°F).
The month with the lowest average high temperature is January (18°F).

  • Average low temperature in September: 36.3°F

The month with the highest average low temperature is July (43.2°F).
The coldest month (with the lowest average low temperature) is January (10°F).

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Average pressure in September
Valdez, AK

Average pressure in September - Valdez, AK
  • Average pressure in September: 29.78"

The month with the highest atmospheric pressure is July (29.98").
The month with the lowest atmospheric pressure is November (29.69").

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Average wind speed in September
Valdez, AK

Average wind speed in September - Valdez, AK
  • Average wind speed in September: 4.8mph

The windiest month (with the highest average wind speed) is November (8.1mph).
The calmest month (with the lowest average wind speed) is July (3.7mph).

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Average humidity in September
Valdez, AK

Average humidity in September - Valdez, AK
  • Average humidity in September: 85%

Months with the highest relative humidity are January and April (88%).
Months with the lowest relative humidity are May, June, July and November (83%).

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Average rainfall in September
Valdez, AK

Average rainfall in September - Valdez, AK
  • Average rainfall in September: 6.89"

The wettest month (with the highest rainfall) is December (7.44").
The driest month (with the least rainfall) is June (1.93").

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Average rainfall days in September
Valdez, AK

Average rainfall days in September - Valdez, AK
  • Average rainfall days in September: 18.5 days

The month with the highest number of rainy days is August (18.7 days).
The month with the least rainy days is February (6.2 days).

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Average snowfall in September
Valdez, AK

Average snowfall in September - Valdez, AK
  • Average snowfall in September: 0.16"

The month with the highest snowfall is December (26.73").
Months with the least snowfall are June, July and August (0").

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Average snowfall days in September
Valdez, AK

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

The month with the highest number of snowfall days is December (17.8 days).
Months with the least snowfall days are June, July and August (0 days).

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Average sea temperature in September
Valdez, AK

Average sea temperature in September - Valdez, AK
  • Average sea temperature in September: 53.2°F

The best month for swimming (with the highest average sea temperature) is July (56.4°F).
The coldest month (with the lowest average sea temperature) is March (38.9°F).

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

Average daylight in September / Average sunshine in September - Valdez, AK
  • Average daylight in September: 12.8h

The month with the longest days is June (Average daylight: 19.2h).
The month with the shortest days is December (Average daylight: 5.7h).

  • Average sunshine in September: 6.2h

The month with the most sunshine is July (Average sunshine: 9.5h).
The month with the least sunshine is December (Average sunshine: 2.8h).

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Average sunshine days in September
Valdez, AK

Average sunshine days in September - Valdez, AK
  • Average sunshine days in September: 9.8 days

Months with the most sunshine days are January and May (12.3 days).
The month with the least sunshine days is December (9.7 days).

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Average UV index in September
Valdez, AK

Average UV index in September - Valdez, AK
  • Average UV index in September: 2

Months with the highest UV index are June and July (UV index 3).
Months with the lowest UV index are January and December (UV index 1).

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Average cloud cover in September
Valdez, AK

Average cloud cover in September - Valdez, AK
  • Average cloud cover in September: 56

The month with the most cloud cover is December (Cloud cover 58).
The month with the least cloud cover is July (Cloud cover 50).

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Average visibility in September
Valdez, AK

Average visibility in September - Valdez, AK
  • Average visibility in September: 5mi

The month with the highest visibility is June (6mi).
Months with the lowest visibility are January, February and April (4mi).

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