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 start of September involves a subtle temperature drop, shifting from a moderately hot 75.7°F (24.3°C) in August to a pleasant 68.9°F (20.5°C). Throughout the month of September, Silverdale witnesses an average low-temperature of 50.9°F (10.5°C).Humidity
In September, the average relative humidity in Silverdale is 76%.Rainfall
In Silverdale, in September, it is raining for 12.7 days, with typically 1.54" (39mm) of accumulated precipitation. In Silverdale, during the entire year, the rain falls for 180.4 days and collects up to 26.93" (684mm) of precipitation.Snowfall
In Silverdale, Washington, 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: Dipping into 53.2°F (11.8°C) below 50°F (10°C) is possible with the right protection; absent that, anticipate cold shock and hampered breathing. Swimming momentarily at 55.4°F (13°C) can be jarring.
Daylight
In Silverdale, Washington, the average length of the day in September is 12h and 33min.On the first day of September, sunrise is at 6:30 am and sunset at 7:50 pm. On the last day of the month, sunrise is at 7:09 am and sunset at 6:51 pm PDT.
Sunshine
In Silverdale, the average sunshine in September is 9.5h.UV index
In Silverdale, the average daily maximum UV index in September is 4. A UV Index value of 3 to 5 symbolizes a moderate health risk from unsafe exposure to UV radiation for average individuals.Note: In September, a regular UV index of 4 translates into these guidelines:
Be mindful. Individuals with a lighter skin tone may suffer burns in less than 30 minutes. Considering the harmful UV rays from the Sun during midday, it's essential to reduce exposure. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage.
Frequently asked questions
What is the temperature in September in Silverdale?
What is the average humidity in September in Silverdale?
How much does it rain in Silverdale in September?
When it does not snow in Silverdale?
When is the ocean warmest in Silverdale?
What is the ocean temperature in September in Silverdale?
How many hours of daylight does Silverdale have in September?
What time are sunrise and sunset in September in Silverdale?
How many hours of sunshine does Silverdale have in September?
What is the UV index intensity in September in Silverdale?
Average temperature in September
Silverdale, WA
- Average high temperature in September: 68.9°F
The warmest month (with the highest average high temperature) is August (75.7°F).
The month with the lowest average high temperature is December (42.8°F).
- Average low temperature in September: 50.9°F
The month with the highest average low temperature is August (54.1°F).
The coldest month (with the lowest average low temperature) is December (35.2°F).
Average pressure in September
Silverdale, 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 and September (30.01"Hg).
Average wind speed in September
Silverdale, WA
- Average wind speed in September: 3.8mph
The windiest month (with the highest average wind speed) is March (5.3mph).
The calmest months (with the lowest average wind speed) are July and August (3.2mph).
Average humidity in September
Silverdale, WA
- Average humidity in September: 76%
The month with the highest relative humidity is December (87%).
The month with the lowest relative humidity is July (70%).
Average rainfall in September
Silverdale, WA
- Average rainfall in September: 1.54"
The wettest month (with the highest rainfall) is January (4.33").
The driest month (with the least rainfall) is July (0.39").
Average rainfall days in September
Silverdale, WA
- Average rainfall days in September: 12.7 days
The month with the highest number of rainy days is March (20.1 days).
The month with the least rainy days is August (6.1 days).
Average snowfall in September
Silverdale, WA
- Average snowfall in September: 0"
The month with the highest snowfall is February (2.4").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in September
Silverdale, WA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (3.1 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average sea temperature in September
Silverdale, 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
Silverdale, WA
- Average daylight in September: 12h and 3min
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 3min
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 36min).
Average sunshine days in September
Silverdale, WA
- Average sunshine days in September: 14.7 days
The month with the most sunshine days is August (21.8 days).
The month with the least sunshine days is February (8.7 days).
Average UV index in September
Silverdale, 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
Silverdale, WA
- Average cloud cover in September: 31
The months with the most cloud cover are January and December (Cloud cover 53).
The month with the least cloud cover is August (Cloud cover 23).
Average visibility in September
Silverdale, WA
- Average visibility in September: 6mi
The months with the highest visibility are March, April, May, June, July, August, September and October (6mi).
The months with the lowest visibility are January, February, November and December (5mi).
Silverdale, Washington, USA
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