September weather forecastPort Ludlow, WA
September
Weather in September
The first month of the autumn, September, is still a comfortable month in Port Ludlow, Washington, with an average temperature fluctuating between 51.8°F (11°C) and 67.3°F (19.6°C).Temperature
The onset of September entails a subtle temperature shift, as the average high-temperature eases from a moderately hot 73.6°F (23.1°C) in August to an enjoyable 67.3°F (19.6°C). During the month of September, the nighttime temperature falls to an average of 51.8°F (11°C).Humidity
The average relative humidity in September in Port Ludlow is 76%.Rainfall
In Port Ludlow, during September, the rain falls for 11.3 days and regularly aggregates up to 1.22" (31mm) of precipitation. Throughout the year, in Port Ludlow, there are 179.1 rainfall days, and 24.57" (624mm) of precipitation is accumulated.Snowfall
In Port Ludlow, snow does not fall in May 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: Swimming in 53.2°F (11.8°C) at temperatures under 50°F (10°C) requires thermal swimsuits; otherwise, one can face cold shock and breathing difficulty. Even brief immersion at 55.4°F (13°C) feels frosty.
Daylight
In Port Ludlow, 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, in Port Ludlow, sunrise is at 7:09 am and sunset at 6:51 pm PDT.
Sunshine
In September, the average sunshine in Port Ludlow is 9.6h.UV index
In Port Ludlow, the average daily maximum UV index in September is 4. A UV Index value of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV radiation for the average person.Note: In September, the maximum UV index of 4 translates into these guidelines:
Act with care - Obligation to protect against skin and eye damage is highlighted. The Sun's UV radiation is especially harmful around midday, so reduce exposure and stay safe. Your best bet for sun defense on the face, eyes, and neck is a hat with a wide brim.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Port Ludlow, WA
- Average high temperature in September: 67.3°F
The warmest month (with the highest average high temperature) is August (73.6°F).
The month with the lowest average high temperature is December (43.2°F).
- Average low temperature in September: 51.8°F
The month with the highest average low temperature is August (54.9°F).
The coldest month (with the lowest average low temperature) is February (36.1°F).
Average pressure in September
Port Ludlow, 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 Ludlow, WA
- Average wind speed in September: 4mph
The windiest months (with the highest average wind speed) are March and November (5.8mph).
The calmest month (with the lowest average wind speed) is August (3.4mph).
Average humidity in September
Port Ludlow, WA
- Average humidity in September: 76%
The months with the highest relative humidity are January and December (85%).
The month with the lowest relative humidity is July (71%).
Average rainfall in September
Port Ludlow, WA
- Average rainfall in September: 1.22"
The wettest month (with the highest rainfall) is January (3.74").
The driest month (with the least rainfall) is July (0.43").
Average rainfall days in September
Port Ludlow, WA
- Average rainfall days in September: 11.3 days
The month with the highest number of rainy days is March (20.9 days).
The month with the least rainy days is August (6.3 days).
Average snowfall in September
Port Ludlow, WA
- Average snowfall in September: 0"
The month with the highest snowfall is February (2.09").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in September
Port Ludlow, 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 Ludlow, 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 Ludlow, 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 30min).
- Average sunshine in September: 9h and 36min
The month with the most sunshine is August (Average sunshine: 10h and 54min).
The months with the least sunshine are January and December (Average sunshine: 4h and 48min).
Average sunshine days in September
Port Ludlow, WA
- Average sunshine days in September: 16.9 days
The month with the most sunshine days is August (21.7 days).
The month with the least sunshine days is March (7.8 days).
Average UV index in September
Port Ludlow, WA
- Average UV index in September: 4
The months with the highest UV index are June and 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
Port Ludlow, WA
- Average cloud cover in September: 30
The months with the most cloud cover are January and December (Cloud cover 51).
The month with the least cloud cover is August (Cloud cover 23).
Average visibility in September
Port Ludlow, WA
- Average visibility in September: 6mi
The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is January (5mi).
