September weather forecast
Newport, OR

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Light waves wash to the pebbly and stony shores overlooking the high rock cliffs holding the iconic Yaquina Head Lighthouse in Newport, Oregon
Light waves wash to the pebbly and stony shores overlooking the high rock cliffs holding the iconic Yaquina Head Lighthouse in Newport, Oregon

Weather in September

September initiates a slow descent into the cooler months with a notable drop in temperature in Newport, Oregon. As the final vestiges of summer dissipate, daylight hours and sunshine duration decline. The rains return, although they are not as frequent as earlier in the year. As the temperatures cool, the sea temperature also decreases, marking a clear end to the summer season. The month of September is a bridge between the searing summer and the approaching winter.

Temperature

The shift into September reveals an average high-temperature of a still comfortable 65.5°F (18.6°C), closely mirroring August's climate. Throughout September, an average low-temperature of 52°F (11.1°C) is expected.

Humidity

April, May, July, September and October, with an average relative humidity of 81%, are the least humid months.

Rainfall

In Newport, during September, the rain falls for 6.8 days and regularly aggregates up to 0.91" (23mm) of precipitation. Throughout the year, there are 139.5 rainfall days, and 18.66" (474mm) of precipitation is accumulated.

Snowfall

In Newport, snow does not fall in March through October and December.

Ocean temperature

In September, the average ocean temperature is 55.6°F (13.1°C).
Note: Swimming in 55.6°F (13.1°C) is deemed hazardous. Exposure to temperatures below 50°F (10°C) leads to immediate severe cold shock and hyperventilation.

Daylight

In September, the average length of the day is 12h and 30min.
On the first day of the month, sunrise is at 6:39 am and sunset at 7:52 pm. On the last day of September, sunrise is at 7:13 am and sunset at 6:57 pm PDT.

Sunshine

In Newport, the average sunshine in September is 9h.

UV index

In September, the average daily maximum UV index is 4. A UV Index reading of 3 to 5 represents a moderate health risk from exposure to the Sun's UV radiation for average individuals.
Note: The maximum daily UV index, 4 in September, converts into the following recommendations:
Prioritize safety - Suggestions to prevent sun damage are offered. Given the potency of the midday Sun's UV radiation, one should avoid prolonged exposure. To best shield against UV radiation, choose sun-safe garments and dependable sunglasses.

Frequently asked questions

What is the temperature in September?

The average high-temperature and low-temperature during September are 65.5°F (18.6°C) and 52°F (11.1°C) respectively.

What are the least humid months?

The months with the lowest humidity in Newport are April, May, July, September and October, with an average relative humidity of 81%.

What is the average humidity in September in Newport?

The average relative humidity in September is 81%.

How much does it rain in September?

In Newport, during September, the rain falls for 6.8 days and regularly aggregates up to 0.91" (23mm) of precipitation.

When it does not snow?

In Newport, snow does not fall in March through October and December.

What is the ocean temperature in September?

In September, the average ocean temperature is 55.6°F (13.1°C). Swimming in 55.6°F (13.1°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 Newport, the average day length in September is 12h and 30min.

When are sunrise and sunset in September?

On the first day of September, sunrise is at 6:39 am and sunset at 7:52 pm. On the last day of the month, sunrise is at 7:13 am and sunset at 6:57 pm PDT.

How long on average sun shines in September?

In September, the average sunshine duration is 9h.

How high is the UV index in September?

In Newport, the average daily maximum UV index in September is 4. A UV Index value of 3 to 5 symbolizes a medium health risk 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 September
Newport, OR

Average temperature in September - Newport, OR
  • Average high temperature in September: 65.5°F

The warmest month (with the highest average high temperature) is August (67.6°F).
The month with the lowest average high temperature is December (47.7°F).

  • Average low temperature in September: 52°F

The month with the highest average low temperature is August (53.6°F).
The coldest month (with the lowest average low temperature) is December (40.6°F).

Average pressure in September
Newport, OR

Average pressure in September - Newport, OR
  • Average pressure in September: 30.02"Hg

The month with the highest atmospheric pressure is January (30.09"Hg).
The month with the lowest atmospheric pressure is September (30.02"Hg).

Average wind speed in September
Newport, OR

Average wind speed in September - Newport, OR
  • Average wind speed in September: 6.6mph

The windiest month (with the highest average wind speed) is January (9.8mph).
The calmest month (with the lowest average wind speed) is August (6.5mph).

Average humidity in September
Newport, OR

Average humidity in September - Newport, OR
  • Average humidity in September: 81%

The months with the highest relative humidity are February, March, November and December (83%).
The months with the lowest relative humidity are April, May, July, September and October (81%).

Average rainfall in September
Newport, OR

Average rainfall in September - Newport, OR
  • Average rainfall in September: 0.91"

The wettest month (with the highest rainfall) is December (3.07").
The driest month (with the least rainfall) is July (0.16").

Average rainfall days in September
Newport, OR

Average rainfall days in September - Newport, OR
  • Average rainfall days in September: 6.8 days

The month with the highest number of rainy days is March (18.2 days).
The month with the least rainy days is August (3.7 days).

Average snowfall in September
Newport, OR

Average snowfall in September - Newport, OR
  • Average snowfall in September: 0"

The month with the highest snowfall is February (0.28").
The months with the least snowfall are March, April, May, June, July, August, September, October and December (0").

Average snowfall days in September
Newport, OR

Average snowfall days in September - Newport, OR
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is February (0.9 days).
The months with the least snowfall days are March, April, May, June, July, August, September and October (0 days).

Average sea temperature in September
Newport, OR

Average sea temperature in September - Newport, OR
  • Average sea temperature in September: 55.6°F

The best month for swimming (with the highest average sea temperature) is July (57.6°F).
The coldest month (with the lowest average sea temperature) is February (49.4°F).

Average daylight in September /
Average sunshine in September
Newport, OR

Average daylight in September / Average sunshine in September - Newport, OR
  • Average daylight in September: 12h and 3min

The month with the longest days is June (Average daylight: 15h and 30min).
The month with the shortest days is December (Average daylight: 8h and 54min).

  • Average sunshine in September: 9h and 0min

The month with the most sunshine is July (Average sunshine: 10h and 42min).
The months with the least sunshine are January and February (Average sunshine: 4h and 0min).

Average sunshine days in September
Newport, OR

Average sunshine days in September - Newport, OR
  • Average sunshine days in September: 21.5 days

The month with the most sunshine days is July (25.8 days).
The month with the least sunshine days is March (10.9 days).

Average UV index in September
Newport, OR

Average UV index in September - Newport, OR
  • Average UV index in September: 4

The month with the highest UV index is July (UV index 5).
The months with the lowest UV index are February, November and December (UV index 2).

Average cloud cover in September
Newport, OR

Average cloud cover in September - Newport, OR
  • Average cloud cover in September: 34

The months with the most cloud cover are February and March (Cloud cover 59).
The month with the least cloud cover is July (Cloud cover 29).

Average visibility in September
Newport, OR

Average visibility in September - Newport, OR
  • Average visibility in September: 5mi

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

Newport, Oregon, USA

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