Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average snowfall in September
- Average snowfall days in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
Weather in September
Temperature
Tidewater notes an average high-temperature of a still enjoyable 66°F (18.9°C) in September, displaying minor variation from August. September generally records an average low-temperature of 51.6°F (10.9°C).Humidity
The months with the lowest humidity are April through July, September and October, with an average relative humidity of 81%.Rainfall
In Tidewater, in September, during 6.7 rainfall days, 0.79" (20mm) of precipitation is typically accumulated. In Tidewater, during the entire year, the rain falls for 130.2 days and collects up to 16.34" (415mm) of precipitation.Snowfall
In Tidewater, Oregon, snow does not fall in March through December.Daylight
The average length of the day in September is 12h and 30min.On the first day of September, sunrise is at 6:39 am and sunset at 7:51 pm. On the last day of the month, sunrise is at 7:13 am and sunset at 6:57 pm PDT.
Sunshine
The average sunshine in September in Tidewater is 9.1h.UV index
In Tidewater, the average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a moderate health risk from exposure to the Sun's UV rays for ordinary individuals.Note: The maximum UV index of 4 during September leads to these instructions:
Be vigilant - Preventing sunburn is recommended. The Sun's UV radiation is especially harmful around midday, so reduce exposure and stay safe. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Tidewater in September?
What are the least humid months?
What is the average humidity in September?
How much does it rain in September?
When it does not snow?
What is the average length of the day in September?
When is the sunrise / sunset in September?
How many hours of sunshine does Tidewater have in September?
What is the UV index intensity in September?
Average temperature in September
Tidewater, OR
- Average high temperature in September: 66°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 (47.8°F).
- Average low temperature in September: 51.6°F
The months with the highest average low temperature are July and August (53.1°F).
The coldest month (with the lowest average low temperature) is December (40.8°F).
Average pressure in September
Tidewater, OR
- Average pressure in September: 30.02"Hg
The month with the highest atmospheric pressure is January (30.09"Hg).
The months with the lowest atmospheric pressure are August and September (30.02"Hg).
Average wind speed in September
Tidewater, OR
- Average wind speed in September: 6.6mph
The windiest month (with the highest average wind speed) is January (9.6mph).
The calmest month (with the lowest average wind speed) is August (6.5mph).
Average humidity in September
Tidewater, OR
- Average humidity in September: 81%
The months with the highest relative humidity are January, February, March, November and December (83%).
The months with the lowest relative humidity are April, May, June, July, September and October (81%).
Average rainfall in September
Tidewater, OR
- Average rainfall in September: 0.79"
The wettest month (with the highest rainfall) is December (2.68").
The driest month (with the least rainfall) is July (0.12").
Average rainfall days in September
Tidewater, OR
- Average rainfall days in September: 6.7 days
The month with the highest number of rainy days is March (17.1 days).
The month with the least rainy days is August (3 days).
Average snowfall in September
Tidewater, OR
- Average snowfall in September: 0"
The month with the highest snowfall is February (0.31").
The months with the least snowfall are March, April, May, June, July, August, September, October, November and December (0").
Average snowfall days in September
Tidewater, OR
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (0.6 days).
The months with the least snowfall days are March, April, May, June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Tidewater, 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 1min
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
Tidewater, OR
- Average sunshine days in September: 22.2 days
The month with the most sunshine days is July (26.8 days).
The month with the least sunshine days is February (11.5 days).
Average UV index in September
Tidewater, 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
Tidewater, OR
- Average cloud cover in September: 33
The month with the most cloud cover is February (Cloud cover 59).
The month with the least cloud cover is July (Cloud cover 29).
Average visibility in September
Tidewater, 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).
Tidewater, Oregon, USA
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