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
During September, the average high-temperature is a still enjoyable 62.4°F (16.9°C), maintaining a close resemblance to that of the preceding month. In Anacortes, the September nights are characterized by an average low-temperature of 53.4°F (11.9°C), a minor dip from daytime readings.Humidity
In Anacortes, the average relative humidity in September is 79%.Rainfall
In Anacortes, in September, it is raining for 13.3 days, with typically 2.28" (58mm) of accumulated precipitation. In Anacortes, during the entire year, the rain falls for 182.3 days and collects up to 30.2" (767mm) of precipitation.Snowfall
May through October are months without snowfall in Anacortes, Washington.Ocean temperature
In Anacortes, Washington, in September, the average water temperature is 52.5°F (11.4°C).Note: Engaging in a swim in 52.5°F (11.4°C) can threaten life. Brief exposure to 55.4°F (13°C) waters is uneasy, and submersion below 50°F (10°C) can lead to cold shock and disrupted breathing patterns, varying by individual.
Daylight
In September, the average length of the day is 12h and 34min.On the first day of the month, sunrise is at 6:29 am and sunset at 7:51 pm. On the last day of September, in Anacortes, sunrise is at 7:09 am and sunset at 6:50 pm PDT.
Sunshine
In Anacortes, the average sunshine in September is 9.1h.UV index
The average daily maximum UV index in September is 4. A UV Index of 3 to 5 symbolizes a moderate threat to health from unprotected exposure to Sun's UV rays for the ordinary person.Note: The maximum daily UV index of 4 in September converts into the following recommendations:
Stay alert. Light-skinned people could suffer burns in less than 30 minutes. It's crucial to reduce time in the direct Sun around mid-day due to the intense solar radiation. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in Anacortes in September?
What is the average humidity in September in Anacortes?
How much does it rain in Anacortes in September?
When it does not snow in Anacortes?
How cold is the water in September in Anacortes?
What is the average length of the day in September in Anacortes?
When is the sunrise / sunset in September in Anacortes?
How many hours of sunshine does Anacortes have in September?
What is the UV index intensity in September in Anacortes?
Average temperature in September
Anacortes, WA
- Average high temperature in September: 62.4°F
The warmest month (with the highest average high temperature) is July (66.9°F).
The month with the lowest average high temperature is December (43.5°F).
- Average low temperature in September: 53.4°F
The month with the highest average low temperature is August (55.8°F).
The coldest month (with the lowest average low temperature) is February (38.1°F).
Average pressure in September
Anacortes, WA
- Average pressure in September: 30.01"Hg
The month with the highest atmospheric pressure is January (30.08"Hg).
The month with the lowest atmospheric pressure is March (30"Hg).
Average wind speed in September
Anacortes, WA
- Average wind speed in September: 4.9mph
The windiest month (with the highest average wind speed) is November (8.9mph).
The calmest month (with the lowest average wind speed) is August (4.1mph).
Average humidity in September
Anacortes, WA
- Average humidity in September: 79%
The months with the highest relative humidity are January and February (81%).
The month with the lowest relative humidity is July (76%).
Average rainfall in September
Anacortes, WA
- Average rainfall in September: 2.28"
The wettest month (with the highest rainfall) is November (4.45").
The driest month (with the least rainfall) is July (0.59").
Average rainfall days in September
Anacortes, WA
- Average rainfall days in September: 13.3 days
The month with the highest number of rainy days is March (20.3 days).
The month with the least rainy days is August (7.3 days).
Average snowfall in September
Anacortes, WA
- Average snowfall in September: 0"
The month with the highest snowfall is February (2.76").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in September
Anacortes, WA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (3 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average sea temperature in September
Anacortes, WA
- Average sea temperature in September: 52.6°F
The best months for swimming (with the highest average sea temperature) are August and September (52.6°F).
The coldest month (with the lowest average sea temperature) is February (44.5°F).
Average daylight in September /
Average sunshine in September
Anacortes, WA
- Average daylight in September: 12h and 4min
The month with the longest days is June (Average daylight: 16h and 6min).
The month with the shortest days is December (Average daylight: 8h and 24min).
- Average sunshine in September: 9h and 1min
The months with the most sunshine are July and August (Average sunshine: 10h and 36min).
The month with the least sunshine is December (Average sunshine: 4h and 0min).
Average sunshine days in September
Anacortes, WA
- Average sunshine days in September: 15.4 days
The months with the most sunshine days are July and August (22.7 days).
The month with the least sunshine days is February (8.3 days).
Average UV index in September
Anacortes, WA
- 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 January, February, November and December (UV index 2).
Average cloud cover in September
Anacortes, WA
- Average cloud cover in September: 33
The month with the most cloud cover is December (Cloud cover 57).
The month with the least cloud cover is August (Cloud cover 25).
Average visibility in September
Anacortes, WA
- Average visibility in September: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Anacortes, Washington, USA
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