September weather forecastNewport, OR
September
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.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
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: 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: 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: 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: 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: 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: 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: 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: 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: 12h and 30min
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: 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: 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: 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: 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).
