August weather forecast and climate
Port Heiden, AK

Weather in August

The last month of the summer, August, is another mild month in Port Heiden, Alaska, with average temperature varying between 49.1°F (9.5°C) and 56.8°F (13.8°C).

Temperature

With an average high-temperature of 56.8°F (13.8°C) and an average low-temperature of 49.1°F (9.5°C), August is the warmest month.

Humidity

The average relative humidity in August is 86%.

Rainfall

In Port Heiden, Alaska, in August, it is raining for 17.5 days, with typically 1.46" (37mm) of accumulated precipitation. Throughout the year, there are 160.7 rainfall days, and 16.57" (421mm) of precipitation is accumulated.

Snowfall

June through August are months without snowfall.

Daylight

In Port Heiden, Alaska, the average length of the day is 15.1h.

Sunshine

In August, the average sunshine in Port Heiden is 5.6h.

UV index

Months with the highest UV index in Port Heiden are May through September, with an average maximum UV index of 3. A UV Index of 3 to 5 symbolizes a medium health hazard from unsafe exposure to the UV radiation for the ordinary person.
Note: In August, the average maximum UV index of 3 translate into the following recommendations:
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. 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.
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FAQ

What is the warmest month in Port Heiden?

The warmest month in Port Heiden is August, with an average high-temperature of 56.8°F (13.8°C) and an average low-temperature of 49.1°F (9.5°C).

What is the temperature in August in Port Heiden?

The average high-temperature, in August, is 56.8°F (13.8°C), while the average low-temperature is 49.1°F (9.5°C).

What is the average humidity in August in Port Heiden?

The average relative humidity in August in Port Heiden, Alaska, is 86%.

How many days does it rain in August in Port Heiden?

In August, the rain falls for 17.5 days. Throughout August, 1.46" (37mm) of precipitation is accumulated.

Does it snow in Port Heiden in August?

In Port Heiden, in August, it doesn't snow. In September, it regularly snows.

When it does not snow in Port Heiden?

June through August are months without snowfall in Port Heiden.

How many hours of daylight does Port Heiden have in August?

The average length of the day in August is 15.1h.

How long on average sun shines in August in Port Heiden?

In Port Heiden, Alaska, the average sunshine in August is 5.6h.

What is the month with the highest UV index in Port Heiden?

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

What is the UV index intensity in August in Port Heiden?

In August, the average daily maximum UV index in Port Heiden, Alaska, 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 August
Port Heiden, AK

Average temperature in August - Port Heiden, AK
  • Average high temperature in August: 56.8°F

The warmest month (with the highest average high temperature) is August (56.8°F).
The month with the lowest average high temperature is January (28.9°F).

  • Average low temperature in August: 49.1°F

The month with the highest average low temperature is August (49.1°F).
The coldest months (with the lowest average low temperature) are January and March (23.4°F).

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Average pressure in August
Port Heiden, AK

Average pressure in August - Port Heiden, AK
  • Average pressure in August: 29.87"

The month with the highest atmospheric pressure is July (29.97").
The month with the lowest atmospheric pressure is December (29.54").

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Average wind speed in August
Port Heiden, AK

Average wind speed in August - Port Heiden, AK
  • Average wind speed in August: 10.7mph

The windiest month (with the highest average wind speed) is December (14.8mph).
The calmest month (with the lowest average wind speed) is July (9.1mph).

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Average humidity in August
Port Heiden, AK

Average humidity in August - Port Heiden, AK
  • Average humidity in August: 86%

The month with the highest relative humidity is January (88%).
The month with the lowest relative humidity is May (78%).

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Average rainfall in August
Port Heiden, AK

Average rainfall in August - Port Heiden, AK
  • Average rainfall in August: 1.46"

The wettest month (with the highest rainfall) is October (2.17").
The driest month (with the least rainfall) is June (0.83").

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Average rainfall days in August
Port Heiden, AK

Average rainfall days in August - Port Heiden, AK
  • Average rainfall days in August: 17.5 days

The month with the highest number of rainy days is September (19.2 days).
The month with the least rainy days is March (7.6 days).

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Average snowfall in August
Port Heiden, AK

Average snowfall in August - Port Heiden, AK
  • Average snowfall in August: 0"

The month with the highest snowfall is December (5.71").
Months with the least snowfall are June, July and August (0").

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Average snowfall days in August
Port Heiden, AK

Average snowfall days in August - Port Heiden, AK
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is December (15.1 days).
Months with the least snowfall days are June, July and August (0 days).

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Average daylight in August /
Average sunshine in August
Port Heiden, AK

Average daylight in August / Average sunshine in August - Port Heiden, AK
  • Average daylight in August: 15.1h

The month with the longest days is June (Average daylight: 17.8h).
The month with the shortest days is December (Average daylight: 6.8h).

  • Average sunshine in August: 5.6h

The month with the most sunshine is May (Average sunshine: 7.7h).
The month with the least sunshine is December (Average sunshine: 2.4h).

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Average sunshine days in August
Port Heiden, AK

Average sunshine days in August - Port Heiden, AK
  • Average sunshine days in August: 10 days

The month with the most sunshine days is May (13 days).
The month with the least sunshine days is November (6 days).

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Average UV index in August
Port Heiden, AK

Average UV index in August - Port Heiden, AK
  • Average UV index in August: 3

Months with the highest UV index are May, June, July, August and September (UV index 3).
Months with the lowest UV index are February, March, November and December (UV index 1).

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Average cloud cover in August
Port Heiden, AK

Average cloud cover in August - Port Heiden, AK
  • Average cloud cover in August: 67

The month with the most cloud cover is July (Cloud cover 69).
The month with the least cloud cover is May (Cloud cover 59).

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Average visibility in August
Port Heiden, AK

Average visibility in August - Port Heiden, AK
  • Average visibility in August: 6mi

Months with the highest visibility are April, May, June, July, August, September and October (6mi).
Months with the lowest visibility are January, February, March, November and December (5mi).

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