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 sea temperature 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
Westport, Washington, experiences a subtle adjustment in high-temperatures to a refreshing 66.7°F (19.3°C) with the onset of September, maintaining near parity with August's 69.4°F (20.8°C). The low-temperature in Westport averages to a fresh 50.5°F (10.3°C) during the nights of September.Humidity
In Westport, the average relative humidity in September is 82%.Rainfall
In Westport, during September, the rain falls for 12 days and regularly aggregates up to 2.24" (57mm) of precipitation. In Westport, during the entire year, the rain falls for 186.2 days and collects up to 48.78" (1239mm) of precipitation.Snowfall
April through October and December are months without snowfall in Westport.Ocean temperature
In September, the average ocean temperature in Westport is 56.1°F (13.4°C).Note: Beware of 56.1°F (13.4°C) waters at 55.4°F (13°C), they're uninviting, and a dip below 50°F (10°C) has risks of breath loss and cold shock, contingent on health.
Daylight
In September, the average length of the day is 12h and 32min.On the first day of the month, sunrise is at 6:37 am and sunset at 7:55 pm. On the last day of September, in Westport, sunrise is at 7:14 am and sunset at 6:57 pm PDT.
Sunshine
In Westport, the average sunshine in September is 8.3h.UV index
May through September, with an average maximum UV index of 4, are months with the highest UV index. A UV Index of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV radiation for average individuals.Note: The UV index of 4 in September translates into these instructions:
Exercise caution. Those with pale skin may experience burns in less than half an hour. It's crucial to reduce time in the direct Sun around mid-day due to the intense solar radiation. Combat UV radiation's detrimental effects with sun-safe clothing and UV-blocking eyewear. Be careful! The Sun's UV radiation can nearly be doubled by the reflective quality of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in Westport in September?
What is the average humidity in September in Westport?
How much does it rain in Westport in September?
When it does not snow in Westport?
What is the water temperature in September in Westport?
How many hours of daylight does Westport have in September?
When is the sunrise / sunset in September in Westport?
How long on average sun shines in September in Westport?
What are the months with the highest UV index in Westport?
What is the UV index intensity in September in Westport?
Average temperature in September
Westport, WA
- Average high temperature in September: 66.7°F
The warmest month (with the highest average high temperature) is August (69.4°F).
The month with the lowest average high temperature is December (45.1°F).
- Average low temperature in September: 50.5°F
The month with the highest average low temperature is August (52°F).
The coldest month (with the lowest average low temperature) is December (37.6°F).
Average pressure in September
Westport, WA
- Average pressure in September: 30.02"Hg
The month with the highest atmospheric pressure is July (30.08"Hg).
The month with the lowest atmospheric pressure is March (30.01"Hg).
Average wind speed in September
Westport, WA
- Average wind speed in September: 5.3mph
The windiest month (with the highest average wind speed) is January (8.2mph).
The calmest month (with the lowest average wind speed) is September (5.3mph).
Average humidity in September
Westport, WA
- Average humidity in September: 82%
The months with the highest relative humidity are November and December (87%).
The month with the lowest relative humidity is July (79%).
Average rainfall in September
Westport, WA
- Average rainfall in September: 2.24"
The wettest month (with the highest rainfall) is December (7.99").
The driest month (with the least rainfall) is July (0.43").
Average rainfall days in September
Westport, WA
- Average rainfall days in September: 12 days
The month with the highest number of rainy days is March (21.8 days).
The month with the least rainy days is August (6.7 days).
Average snowfall in September
Westport, WA
- Average snowfall in September: 0"
The month with the highest snowfall is February (1.46").
The months with the least snowfall are April, May, June, July, August, September, October and December (0").
Average snowfall days in September
Westport, WA
- Average snowfall days in September: 0.1 days
The month with the highest number of snowfall days is February (2 days).
The months with the least snowfall days are April, May, June, July, August and October (0 days).
Average sea temperature in September
Westport, WA
- Average sea temperature in September: 56.2°F
The best month for swimming (with the highest average sea temperature) is July (57.7°F).
The coldest month (with the lowest average sea temperature) is February (47.6°F).
Average daylight in September /
Average sunshine in September
Westport, WA
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 48min).
The month with the shortest days is December (Average daylight: 8h and 36min).
- Average sunshine in September: 8h and 2min
The month with the most sunshine is July (Average sunshine: 10h and 0min).
The month with the least sunshine is January (Average sunshine: 3h and 24min).
Average sunshine days in September
Westport, WA
- Average sunshine days in September: 15.4 days
The month with the most sunshine days is August (21.4 days).
The months with the least sunshine days are February and November (8 days).
Average UV index in September
Westport, WA
- Average UV index in September: 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 January, February, November and December (UV index 2).
Average cloud cover in September
Westport, WA
- Average cloud cover in September: 42
The month with the most cloud cover is January (Cloud cover 64).
The month with the least cloud cover is July (Cloud cover 36).
Average visibility in September
Westport, WA
- Average visibility in September: 5mi
The months with the highest visibility are March and April (6mi).
The month with the lowest visibility is August (4mi).
Westport, Washington, USA
Weather forecast for your location
2. Allow the app to use your location