September weather forecastPort Orchard, WA
September
Weather in September
The first month of the autumn, September, is also an agreeable month in Port Orchard, Washington, with an average temperature fluctuating between 50.9°F (10.5°C) and 70°F (21.1°C).Temperature
September ushers in a minute temperature change, with average high-temperatures reducing from August's moderately hot 77.2°F (25.1°C) to an agreeable 70°F (21.1°C). Port Orchard sees an average low-temperature of 50.9°F (10.5°C) during September.Humidity
In Port Orchard, the average relative humidity in September is 75%.Rainfall
In Port Orchard, during September, the rain falls for 9.9 days and regularly aggregates up to 0.59" (15mm) of precipitation. Throughout the year, in Port Orchard, there are 138.9 rainfall days, and 12.24" (311mm) of precipitation is accumulated.Snowfall
In Port Orchard, snow does not fall in April through October.Ocean temperature
August and September, with an average ocean temperature of 53.2°F (11.8°C), are months with the warmest seawater.Note: Entering waters of 53.2°F (11.8°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
The average length of the day in September is 12h and 33min.On the first day of the month, sunrise is at 6:30 am and sunset at 7:50 pm. On the last day of September, sunrise is at 7:09 am and sunset at 6:51 pm PDT.
Sunshine
The average sunshine in September in Port Orchard is 9.3h.UV index
In September, the average daily maximum UV index is 4. A UV Index estimate of 3 to 5 represents a medium health hazard from exposure to the Sun's UV radiation for ordinary individuals.Note: An average maximum UV index of 4 in September leads to these recommendations:
Heed the precautions - Suggestions to avoid sunburn are made. To guard against the harmful effects of the Sun, minimize exposure during midday. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Port Orchard, WA
- Average high temperature in September: 70°F
The warmest month (with the highest average high temperature) is August (77.2°F).
The month with the lowest average high temperature is December (43.2°F).
- Average low temperature in September: 50.9°F
The month with the highest average low temperature is August (53.6°F).
The coldest month (with the lowest average low temperature) is December (34.9°F).
Average pressure in September
Port Orchard, WA
- Average pressure in September: 30.01"Hg
The month with the highest atmospheric pressure is January (30.09"Hg).
The months with the lowest atmospheric pressure are March, August and September (30.01"Hg).
Average wind speed in September
Port Orchard, WA
- Average wind speed in September: 4.1mph
The windiest month (with the highest average wind speed) is March (5.5mph).
The calmest months (with the lowest average wind speed) are July and August (3.5mph).
Average humidity in September
Port Orchard, WA
- Average humidity in September: 75%
The month with the highest relative humidity is December (87%).
The month with the lowest relative humidity is July (69%).
Average rainfall in September
Port Orchard, WA
- Average rainfall in September: 0.59"
The wettest months (with the highest rainfall) are January and December (2.05").
The driest month (with the least rainfall) is July (0.28").
Average rainfall days in September
Port Orchard, WA
- Average rainfall days in September: 9.9 days
The month with the highest number of rainy days is March (15.3 days).
The month with the least rainy days is August (5.4 days).
Average snowfall in September
Port Orchard, WA
- Average snowfall in September: 0"
The month with the highest snowfall is February (1.22").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in September
Port Orchard, WA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (2.8 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average sea temperature in September
Port Orchard, WA
- Average sea temperature in September: 53.1°F
The best month for swimming (with the highest average sea temperature) is August (53.2°F).
The coldest month (with the lowest average sea temperature) is February (45.3°F).
Average daylight in September /
Average sunshine in September
Port Orchard, WA
- Average daylight in September: 12h and 30min
The month with the longest days is June (Average daylight: 15h and 54min).
The month with the shortest days is December (Average daylight: 8h and 30min).
- Average sunshine in September: 9h and 18min
The month with the most sunshine is August (Average sunshine: 10h and 42min).
The month with the least sunshine is December (Average sunshine: 4h and 6min).
Average sunshine days in September
Port Orchard, WA
- Average sunshine days in September: 18.5 days
The month with the most sunshine days is August (22.8 days).
The month with the least sunshine days is February (11.8 days).
Average UV index in September
Port Orchard, WA
- Average UV index in September: 4
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in September
Port Orchard, WA
- Average cloud cover in September: 34
The month with the most cloud cover is December (Cloud cover 58).
The month with the least cloud cover is August (Cloud cover 25).
Average visibility in September
Port Orchard, WA
- Average visibility in September: 6mi
The months with the highest visibility are May, June, July, August and September (6mi).
The months with the lowest visibility are January, February, March, April, October, November and December (5mi).
