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
Cannon Beach's average high-temperature in September sits at a still enjoyable 63.5°F (17.5°C), showing little difference from the previous month. Nighttime temperatures hover around an average low of 53.8°F (12.1°C) in September.Humidity
The average relative humidity in September is 82%.Rainfall
In September, the rain falls for 11 days. Throughout September, 1.77" (45mm) of precipitation is accumulated. In Cannon Beach, Oregon, during the entire year, the rain falls for 185.6 days and collects up to 39.8" (1011mm) of precipitation.Snowfall
April through November are months without snowfall.Ocean temperature
In Cannon Beach, the average seawater temperature in September is 56.1°F (13.4°C).Note: Diving into 56.1°F (13.4°C) is practical below 50°F (10°C), given you're wearing protective swim gear; without it, expect a quick onset of cold shock and a struggle to breathe. Merely touching waters at 55.4°F (13°C) feels ice-cold.
Daylight
The average length of the day in September in Cannon Beach is 12h and 31min.On the first day of September in Cannon Beach, sunrise is at 6:37 am and sunset at 7:53 pm. On the last day of the month, sunrise is at 7:14 am and sunset at 6:57 pm PDT.
Sunshine
The average sunshine in September in Cannon Beach is 8.8h.UV index
May through September, with an average maximum UV index of 4, are months with the highest UV index in Cannon Beach. A UV Index value of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV rays for the ordinary person.Note: During September, 4 as the daily maximum UV index converts into the following advice:
Be vigilant - Preventing sunburn is recommended. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation.
Frequently asked questions
What is the usual temperature for Cannon Beach in September?
What is the average humidity in September in Cannon Beach?
How much does it rain in Cannon Beach in September?
When it does not snow in Cannon Beach?
How cold is the water in September in Cannon Beach?
What is the average length of the day in September in Cannon Beach?
When are sunrise and sunset in September in Cannon Beach?
How long on average sun shines in September in Cannon Beach?
What are the months with the highest UV index in Cannon Beach?
How high is the UV index in September in Cannon Beach?
Average temperature in September
Cannon Beach, OR
- Average high temperature in September: 63.5°F
The warmest month (with the highest average high temperature) is August (65.5°F).
The month with the lowest average high temperature is December (46.6°F).
- Average low temperature in September: 53.8°F
The month with the highest average low temperature is August (55°F).
The coldest month (with the lowest average low temperature) is December (40.5°F).
Average pressure in September
Cannon Beach, OR
- Average pressure in September: 30.02"Hg
The month with the highest atmospheric pressure is January (30.08"Hg).
The months with the lowest atmospheric pressure are March and September (30.02"Hg).
Average wind speed in September
Cannon Beach, OR
- Average wind speed in September: 7.2mph
The windiest month (with the highest average wind speed) is January (10.9mph).
The calmest month (with the lowest average wind speed) is August (6.3mph).
Average humidity in September
Cannon Beach, OR
- Average humidity in September: 82%
The month with the highest relative humidity is August (84%).
The months with the lowest relative humidity are January, March, April, May, October and December (81%).
Average rainfall in September
Cannon Beach, OR
- Average rainfall in September: 1.77"
The wettest month (with the highest rainfall) is December (6.54").
The driest months (with the least rainfall) are July and August (0.47").
Average rainfall days in September
Cannon Beach, OR
- Average rainfall days in September: 11 days
The month with the highest number of rainy days is March (20.8 days).
The months with the least rainy days are July and August (7.3 days).
Average snowfall in September
Cannon Beach, OR
- Average snowfall in September: 0"
The month with the highest snowfall is February (0.59").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").
Average snowfall days in September
Cannon Beach, OR
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (1.3 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average sea temperature in September
Cannon Beach, OR
- Average sea temperature in September: 56.2°F
The best month for swimming (with the highest average sea temperature) is July (57.2°F).
The coldest month (with the lowest average sea temperature) is February (48.1°F).
Average daylight in September /
Average sunshine in September
Cannon Beach, OR
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 42min).
The month with the shortest days is December (Average daylight: 8h and 42min).
- Average sunshine in September: 8h and 5min
The month with the most sunshine is August (Average sunshine: 10h and 0min).
The months with the least sunshine are January and February (Average sunshine: 3h and 54min).
Average sunshine days in September
Cannon Beach, OR
- Average sunshine days in September: 17 days
The month with the most sunshine days is August (21.2 days).
The month with the least sunshine days is February (7.5 days).
Average UV index in September
Cannon Beach, OR
- 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 February, November and December (UV index 2).
Average cloud cover in September
Cannon Beach, OR
- Average cloud cover in September: 36
The months with the most cloud cover are January and February (Cloud cover 59).
The month with the least cloud cover is August (Cloud cover 35).
Average visibility in September
Cannon Beach, OR
- Average visibility in September: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, September, October, November and December (6mi).
The month with the lowest visibility is August (5mi).
Cannon Beach, Oregon, USA
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