September weather forecast
Valdez, AK

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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

September witnesses a complete pivot back to winter weather with a significant drop in the high temperature to 43.9°F (6.6°C). This month experiences the highest amount of rainfall, approximately 6.89" (175mm), making the town a canvas of deep greens and vivid blossoms. The changing landscape thrills nature enthusiasts, making it a peak time for scenic walks and photography. Despite more clouds and rain, the town manages to keep the spirits high and the caffeinated drinks warm.

Temperature

In Valdez, the average high-temperature in September gently drops from a fresh 50.5°F (10.3°C) in August to a frosty 43.9°F (6.6°C). A consistent nighttime average temperature of 36.3°F (2.4°C) is maintained during September.

Humidity

The average relative humidity in September in Valdez is 85%.

Rainfall

In Valdez, in September, during 18.5 rainfall days, 6.89" (175mm) of precipitation is typically accumulated. Throughout the year, there are 167.5 rainfall days, and 56.73" (1441mm) of precipitation is accumulated.

Snowfall

January through May, September through December are months with snowfall 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. In Valdez, Alaska, during the entire year, snow falls for 88.9 days and aggregates up to 114.06" (2897mm) of snow.

Ocean temperature

In Valdez, the average seawater temperature in September is 53.2°F (11.8°C).
Note: Immersing oneself in 53.2°F (11.8°C) at sub14°F (-10°C) temperatures is a recipe for harsh cold shock and quickened breathing unless adequately equipped.

Daylight

In September, the average length of the day in Valdez, Alaska, is 12h and 52min.
On the first day of the month, sunrise is at 6:39 am and sunset at 8:50 pm. On the last day of September, sunrise is at 7:51 am and sunset at 7:18 pm AKDT.

Sunshine

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

UV index

In Valdez, the average daily maximum UV index in September is 2. A UV Index reading of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV radiation for the ordinary person.
Note: The UV index of 2 in September translates into these instructions:
Children necessitate constant protection from sunlight, unlike the majority, who can remain under the sun for about an hour without burning. The Sun's UV radiation is especially harmful around midday, so reduce exposure and stay safe. Loose clothes with a tight weave are optimal for safeguarding yourself against the Sun's rays. Be on the lookout! Nearly twofold UV radiation from the Sun can be reflected by snow.
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Frequently asked questions

How cold is it in Valdez in September?

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

What is the average humidity in September in Valdez?

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

How much does it rain in Valdez in September?

In September, the rain falls for 18.5 days. Throughout September, 6.89" (175mm) of precipitation is accumulated.

When does it start to snow in Valdez?

September is the first month it typically snows in Valdez, Alaska. 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, Alaska, the average seawater temperature in September is 53.2°F (11.8°C). Swimming in 53.2°F (11.8°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 Valdez have in September?

In September, the average day length is 12h and 52min.

When is the sunrise / sunset in September in Valdez?

In September, on the first day of the month, sunrise is at 6:39 am and sunset at 8:50 pm. On the last day of the month, in Valdez, Alaska, sunrise is at 7:51 am and sunset at 7:18 pm AKDT.

How long on average sun shines in September in Valdez?

The average sunshine duration in September is 6.2h.

How high is the UV index in September in Valdez?

In September, the average daily maximum UV index is 2. A UV Index reading of 2, and below, represents a low health threat from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

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"Hg

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

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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%

The months with the highest relative humidity are January and April (88%).
The 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").
The 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).
The 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: 12h and 5min

The month with the longest days is June (Average daylight: 19h and 12min).
The month with the shortest days is December (Average daylight: 5h and 42min).

  • Average sunshine in September: 6h and 1min

The month with the most sunshine is July (Average sunshine: 9h and 30min).
The month with the least sunshine is December (Average sunshine: 2h and 48min).

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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

The 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

The months with the highest UV index are June and July (UV index 3).
The 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).
The months with the lowest visibility are January, February and April (4mi).

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Valdez, Alaska, USA

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