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
The transition into September marks the average high-temperature at a refreshing 66.7°F (19.3°C), differing minimally from August's 68.5°F (20.3°C). During the month of September, Harbor experiences a steady low-temperature average of 53.6°F (12°C).Humidity
July and September, with an average relative humidity of 76%, are the least humid months.Rainfall
In Harbor, during September, the rain falls for 5.9 days and regularly aggregates up to 1.14" (29mm) of precipitation. Throughout the year, in Harbor, Oregon, there are 130.9 rainfall days, and 47.09" (1196mm) of precipitation is accumulated.Snowfall
In Harbor, Oregon, snow does not fall in January, March through December.Ocean temperature
In Harbor, the average seawater temperature in September is 53.2°F (11.8°C).Note: While a brief time in 53.2°F (11.8°C) at 55.4°F (13°C) is already bracing, plunging below 50°F (10°C) can severely affect breathing and introduce a cold shock, relying on your physical state.
Daylight
The average length of the day in September in Harbor is 12h and 28min.On the first day of September, sunrise is at 6:43 am and sunset at 7:50 pm. On the last day of the month, sunrise is at 7:13 am and sunset at 6:59 pm PDT.
Sunshine
The average sunshine in September is 10.1h.UV index
The average daily maximum UV index in September is 4. A UV Index value of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV radiation for the average person.Note: The maximum daily UV index of 4 in September interprets into the following recommendations:
Safety measures are advised. Light-skinned individuals may experience burns in under half an hour. Midday is the peak time for the Sun's radiation; stay in the shade and protect yourself. To cut down UV radiation exposure by about half, sport a wide-brim hat.
Frequently asked questions
What is the temperature in September in Harbor?
What are the least humid months in Harbor?
What is the average humidity in September in Harbor?
How much does it rain in Harbor in September?
When it does not snow in Harbor?
How cold is the water in September in Harbor?
What is the average length of the day in September in Harbor?
What time are sunrise and sunset in September in Harbor?
How long on average sun shines in September in Harbor?
How high is the UV index in September in Harbor?
Average temperature in September
Harbor, OR
- Average high temperature in September: 66.7°F
The warmest months (with the highest average high temperature) are July and August (68.5°F).
The month with the lowest average high temperature is December (50.9°F).
- Average low temperature in September: 53.6°F
The month with the highest average low temperature is July (55°F).
The coldest month (with the lowest average low temperature) is February (43°F).
Average pressure in September
Harbor, OR
- Average pressure in September: 30"Hg
The month with the highest atmospheric pressure is January (30.12"Hg).
The months with the lowest atmospheric pressure are August and September (30"Hg).
Average wind speed in September
Harbor, OR
- Average wind speed in September: 7.9mph
The windiest month (with the highest average wind speed) is June (10.1mph).
The calmest month (with the lowest average wind speed) is August (7.6mph).
Average humidity in September
Harbor, OR
- Average humidity in September: 76%
The month with the highest relative humidity is March (82%).
The months with the lowest relative humidity are July and September (76%).
Average rainfall in September
Harbor, OR
- Average rainfall in September: 1.14"
The wettest month (with the highest rainfall) is December (8.11").
The driest month (with the least rainfall) is July (0.12").
Average rainfall days in September
Harbor, OR
- Average rainfall days in September: 5.9 days
The month with the highest number of rainy days is March (18.6 days).
The month with the least rainy days is July (2.2 days).
Average snowfall in September
Harbor, OR
- Average snowfall in September: 0"
The month with the highest snowfall is February (0.71").
The months with the least snowfall are January, March, April, May, June, July, August, September, October, November and December (0").
Average snowfall days in September
Harbor, OR
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (0.3 days).
The months with the least snowfall days are January, March, April, May, June, July, August, September, October and November (0 days).
Average sea temperature in September
Harbor, OR
- Average sea temperature in September: 53.2°F
The best month for swimming (with the highest average sea temperature) is July (53.5°F).
The coldest months (with the lowest average sea temperature) are January, February and April (50.8°F).
Average daylight in September /
Average sunshine in September
Harbor, OR
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in September: 10h and 1min
The month with the most sunshine is July (Average sunshine: 11h and 48min).
The month with the least sunshine is January (Average sunshine: 4h and 42min).
Average sunshine days in September
Harbor, OR
- Average sunshine days in September: 23.4 days
The month with the most sunshine days is July (28.3 days).
The month with the least sunshine days is March (11 days).
Average UV index in September
Harbor, OR
- Average UV index in September: 4
The months with the highest UV index are June, July and August (UV index 5).
The month with the lowest UV index is February (UV index 2).
Average cloud cover in September
Harbor, OR
- Average cloud cover in September: 18
The months with the most cloud cover are January and March (Cloud cover 49).
The month with the least cloud cover is July (Cloud cover 9).
Average visibility in September
Harbor, OR
- 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).
Harbor, Oregon, USA
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