September weather forecastPort Angeles, WA
September
Weather in September
September brings a sense of calmness to the weather in Port Angeles. Though temperatures begin to drop, they still hover around pleasant ranges. A slight increase in rainfall and cloud cover heralds the beginning of the fall season. The winds remain mild and comforting, adding to the tranquility of the weather. Despite lesser sunlight hours as compared to summer months, the UV index remains moderate.Temperature
With the commencement of September, Port Angeles records a moderate temperature decline, with the average high easing from August's comfortable 67.5°F (19.7°C) to a still enjoyable 61.3°F (16.3°C). September witnesses an average low-temperature hovering around a chilly 46.6°F (8.1°C).Humidity
The average relative humidity in September in Port Angeles is 80%.Rainfall
In Port Angeles, in September, during 12.9 rainfall days, 1.85" (47mm) of precipitation is typically accumulated. In Port Angeles, during the entire year, the rain falls for 196.3 days and collects up to 39.13" (994mm) of precipitation.Snowfall
In Port Angeles, snow does not fall in April through October.Ocean temperature
August and September, with an average ocean temperature of 52.7°F (11.5°C), are months with the warmest seawater in Port Angeles.Note: Entering waters of 52.7°F (11.5°C) is life-endangering. A mere moment in 55.4°F (13°C) waters feels piercing cold, and below 50°F (10°C) it can lead to immediate cold shock and cessation of breathing control, depending on body resilience.
Daylight
In Port Angeles, the average length of the day in September is 12h and 33min.On the first day of the month, sunrise is at 6:32 am and sunset at 7:54 pm. On the last day of September, in Port Angeles, sunrise is at 7:12 am and sunset at 6:54 pm PDT.
Sunshine
In September, the average sunshine in Port Angeles is 9.2h.UV index
In September, the average daily maximum UV index in Port Angeles is 3. A UV Index estimate of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV radiation for ordinary individuals.Note: The daily maximum UV index of 3 in September interprets into the following advice:
Preventative actions are necessary - Recommendations to ward off sunburn are given. It's crucial to reduce time in the direct Sun around mid-day due to the intense solar radiation. In the presence of strong sunlight, it's crucial to wear sunglasses that ward off UVA and UVB rays.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Port Angeles, WA
- Average high temperature in September: 61.3°F
The warmest month (with the highest average high temperature) is August (67.5°F).
The month with the lowest average high temperature is December (39.2°F).
- Average low temperature in September: 46.6°F
The month with the highest average low temperature is August (50.4°F).
The coldest month (with the lowest average low temperature) is December (31.1°F).
Average pressure in September
Port Angeles, WA
- Average pressure in September: 30.02"Hg
The months with the highest atmospheric pressure are January and July (30.06"Hg).
The month with the lowest atmospheric pressure is March (30"Hg).
Average wind speed in September
Port Angeles, WA
- Average wind speed in September: 3.6mph
The windiest month (with the highest average wind speed) is November (5.2mph).
The calmest month (with the lowest average wind speed) is September (3.6mph).
Average humidity in September
Port Angeles, WA
- Average humidity in September: 80%
The months with the highest relative humidity are January and December (88%).
The month with the lowest relative humidity is July (75%).
Average rainfall in September
Port Angeles, WA
- Average rainfall in September: 1.85"
The wettest month (with the highest rainfall) is January (6.54").
The driest month (with the least rainfall) is July (0.71").
Average rainfall days in September
Port Angeles, WA
- Average rainfall days in September: 12.9 days
The month with the highest number of rainy days is March (22.7 days).
The month with the least rainy days is August (7.3 days).
Average snowfall in September
Port Angeles, WA
- Average snowfall in September: 0"
The month with the highest snowfall is February (4.72").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in September
Port Angeles, WA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (4.6 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average sea temperature in September
Port Angeles, WA
- Average sea temperature in September: 52.7°F
The best month for swimming (with the highest average sea temperature) is September (52.7°F).
The coldest month (with the lowest average sea temperature) is February (45.2°F).
Average daylight in September /
Average sunshine in September
Port Angeles, WA
- Average daylight in September: 12h and 36min
The month with the longest days is June (Average daylight: 16h and 0min).
The month with the shortest days is December (Average daylight: 8h and 24min).
- Average sunshine in September: 9h and 12min
The months with the most sunshine are July and August (Average sunshine: 10h and 48min).
The month with the least sunshine is January (Average sunshine: 4h and 6min).
Average sunshine days in September
Port Angeles, WA
- Average sunshine days in September: 15.5 days
The month with the most sunshine days is August (20.5 days).
The month with the least sunshine days is March (6.3 days).
Average UV index in September
Port Angeles, WA
- Average UV index in September: 3
The months with the highest UV index are June, July and August (UV index 4).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover in September
Port Angeles, WA
- Average cloud cover in September: 33
The month with the most cloud cover is February (Cloud cover 58).
The month with the least cloud cover is August (Cloud cover 23).
Average visibility in September
Port Angeles, WA
- Average visibility in September: 6mi
The months with the highest visibility are April, May, June, July, August, September and October (6mi).
The months with the lowest visibility are January, February, March, November and December (5mi).
