August weather forecast
Seaside, OR

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Large rocks in the water on the Seaside shores, Oregon, overlooking the breathtaking sunset view
Large rocks in the water on the Seaside shores, Oregon, overlooking the breathtaking sunset view

Weather in August

During August, Seaside, Oregon reaches the apex of its summer climate, characterized by the year's zenith of average high temperature at 65.5°F (18.6°C). The weather balances heat and light, enabling outdoor activities under the most conducive conditions. The city bathes in an extensive duration of sunlight with the longest days of the year. The sea, basked in sunlight, invites swimmers to its warm waters. As a result, August, a synonym for the halcyon days of summer, garners considerable attention and footfall.

Temperature

In Seaside, the month of August registers the highest temperatures, averaging 65.5°F (18.6°C) at the peak and 55°F (12.8°C) at the lowest.

Humidity

The most humid month is August, with an average relative humidity of 84%.

Rainfall

July and August are months with the least rain when the rain falls for 7.3 days and typically aggregates up to 0.47" (12mm) of rain.

Snowfall

In Seaside, Oregon, snow does not fall in April through November.

Ocean temperature

In Seaside, in August, the average water temperature is 56.8°F (13.8°C).
Note: Swimming at temperatures less than 50°F (10°C) in 56.8°F (13.8°C) is feasible with the right swimsuit; if not, expect cold shock and breathlessness. A quick swim at 55.4°F (13°C) without adequate warmth can be discomforting.

Daylight

In Seaside, the average length of the day in August is 14h and 5min.
On the first day of August, sunrise is at 5:59 am and sunset at 8:44 pm. On the last day of the month, sunrise is at 6:36 am and sunset at 7:55 pm PDT.

Sunshine

August has the most sunshine of the year, with an average of 10h of sunshine.

UV index

The months with the highest UV index are May through September, with an average maximum UV index of 4. A UV Index estimate of 3 to 5 represents a medium health hazard from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: In August, the maximum UV index of 4 transforms into these recommendations:
Be mindful. Individuals with a lighter skin tone may suffer burns in less than 30 minutes. It's recommended to limit sun exposure when its radiation is at its peak during midday. Stay sun-safe with clothing that is both closely woven and worn loosely.

Frequently asked questions

What month is the hottest?

In Seaside, temperatures reach their average annual highs in August, measuring 65.5°F (18.6°C) and a minimum average of 55°F (12.8°C).

What is the usual temperature for Seaside in August?

An average high-temperature, in August, in Seaside, is 65.5°F (18.6°C) and the average low-temperature is 55°F (12.8°C).

What is the most humid month?

The most humid month is August, with an average relative humidity of 84%.

What is the average humidity in August?

In Seaside, the average relative humidity in August is 84%.

What is the driest month?

The months with the least rainfall are July and August Rain falls for 7.3 days and accumulates 0.47" (12mm) of rain.

How much does it rain in August?

In Seaside, during August, the rain falls for 7.3 days and regularly aggregates up to 0.47" (12mm) of precipitation.

When it does not snow?

April through November are months without snowfall in Seaside.

How cold is the water in August?

In Seaside, Oregon, the average seawater temperature in August is 56.8°F (13.8°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.

What is the average length of the day in August?

In August, the average day length is 14h and 5min.

When are sunrise and sunset in August?

In August, on the first day of the month, sunrise is at 5:59 am and sunset at 8:44 pm. On the last day of the month, sunrise is at 6:36 am and sunset at 7:55 pm PDT.

What month has the most sunshine?

With an average of 10h of sunshine, August has the most sunshine of the year in Seaside.

How long on average sun shines in August?

In August, the average sunshine duration is 10h.

When is the highest UV index?

The months with the highest UV index are May through September, with an average maximum UV index of 4.

How high is the UV index in August?

In Seaside, Oregon, the average daily maximum UV index in August is 4. A UV Index value of 3 to 5 symbolizes a moderate health threat from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in August
Seaside, OR

Average temperature in August - Seaside, OR
  • Average high temperature in August: 65.5°F

The warmest month (with the highest average high temperature) is August (65.5°F).
The month with the lowest average high temperature is December (46.6°F).

  • Average low temperature in August: 55°F

The month with the highest average low temperature is August (55°F).
The coldest month (with the lowest average low temperature) is December (40.5°F).

Average pressure in August
Seaside, OR

Average pressure in August - Seaside, OR
  • Average pressure in August: 30.03"Hg

The month with the highest atmospheric pressure is January (30.08"Hg).
The months with the lowest atmospheric pressure are March and September (30.02"Hg).

Average wind speed in August
Seaside, OR

Average wind speed in August - Seaside, OR
  • Average wind speed in August: 6.3mph

The windiest month (with the highest average wind speed) is January (10.9mph).
The calmest month (with the lowest average wind speed) is August (6.3mph).

Average humidity in August
Seaside, OR

Average humidity in August - Seaside, OR
  • Average humidity in August: 84%

The month with the highest relative humidity is August (84%).
The months with the lowest relative humidity are January, March, April, May, October and December (81%).

Average rainfall in August
Seaside, OR

Average rainfall in August - Seaside, OR
  • Average rainfall in August: 0.47"

The wettest month (with the highest rainfall) is December (6.54").
The driest months (with the least rainfall) are July and August (0.47").

Average rainfall days in August
Seaside, OR

Average rainfall days in August - Seaside, OR
  • Average rainfall days in August: 7.3 days

The month with the highest number of rainy days is March (20.8 days).
The months with the least rainy days are July and August (7.3 days).

Average snowfall in August
Seaside, OR

Average snowfall in August - Seaside, OR
  • Average snowfall in August: 0"

The month with the highest snowfall is February (0.59").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").

Average snowfall days in August
Seaside, OR

Average snowfall days in August - Seaside, OR
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is February (1.3 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).

Average sea temperature in August
Seaside, OR

Average sea temperature in August - Seaside, OR
  • Average sea temperature in August: 56.8°F

The best month for swimming (with the highest average sea temperature) is July (57.2°F).
The coldest month (with the lowest average sea temperature) is February (48.1°F).

Average daylight in August /
Average sunshine in August
Seaside, OR

Average daylight in August / Average sunshine in August - Seaside, OR
  • Average daylight in August: 14h and 1min

The month with the longest days is June (Average daylight: 15h and 42min).
The month with the shortest days is December (Average daylight: 8h and 42min).

  • Average sunshine in August: 10h and 0min

The month with the most sunshine is August (Average sunshine: 10h and 0min).
The months with the least sunshine are January and February (Average sunshine: 3h and 54min).

Average sunshine days in August
Seaside, OR

Average sunshine days in August - Seaside, OR
  • Average sunshine days in August: 21.2 days

The month with the most sunshine days is August (21.2 days).
The month with the least sunshine days is February (7.5 days).

Average UV index in August
Seaside, OR

Average UV index in August - Seaside, OR
  • Average UV index in August: 4

The months with the highest UV index are May, June, July, August and September (UV index 4).
The months with the lowest UV index are February, November and December (UV index 2).

Average cloud cover in August
Seaside, OR

Average cloud cover in August - Seaside, OR
  • Average cloud cover in August: 35

The months with the most cloud cover are January and February (Cloud cover 59).
The month with the least cloud cover is August (Cloud cover 35).

Average visibility in August
Seaside, OR

Average visibility in August - Seaside, OR
  • Average visibility in August: 5mi

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

Seaside, Oregon, USA

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