What’s the Weather Like in Seattle in September?
Seattle in September is generally pleasant, marking a transition from summer to fall. Expect average high temperatures in the low 70s Fahrenheit (around 22 degrees Celsius) and lows in the mid-50s Fahrenheit (around 13 degrees Celsius). Rainfall increases compared to the drier summer months, but September is often still relatively sunny.
September Temperatures in Seattle
September in Seattle offers comfortable temperatures, making it ideal for outdoor activities. The average high temperature hovers around 70-72°F (21-22°C). This means you can generally expect warm days perfect for exploring the city, hiking, or enjoying the waterfront. Evenings can be cooler, so bringing a light jacket or sweater is a good idea. Low temperatures average in the mid-50s Fahrenheit (around 13 degrees Celsius).
Rainfall in September
While Seattle is known for its rain, September is a transition month. Rainfall starts to increase compared to July and August, but it’s usually not as consistently wet as the later fall and winter months. You might experience a few days with light showers or drizzle, but you’ll also likely have plenty of sunny or partly cloudy days. Check the Seattle Climate page on Wikipedia for detailed historical rainfall data.
Sunshine and Daylight Hours
September still boasts a decent amount of sunshine in Seattle, although daylight hours are noticeably decreasing as the month progresses. Expect around 12-13 hours of daylight at the beginning of the month, which gradually shortens to around 11 hours by the end of September. This means you’ll have ample time to enjoy outdoor activities during the day, but evenings will start to feel earlier.
What to Wear in Seattle in September
Dressing in layers is recommended for Seattle in September. Start with a base layer like a t-shirt, add a light sweater or fleece, and bring a waterproof jacket or umbrella for potential showers. Comfortable walking shoes are essential for exploring the city. Sunglasses and sunscreen are also a good idea, as you can still experience sunny days.
FAQ About Seattle Weather in September
Is September a good time to visit Seattle?
Yes, September is often considered a good time to visit Seattle. The weather is generally pleasant, with warm days and cooler evenings. It’s less crowded than the peak summer months, and there are many outdoor activities and events to enjoy.
Does it rain a lot in Seattle in September?
Rainfall increases in September compared to the summer months, but it’s not typically as rainy as later in the fall and winter. You might experience some light showers, but you’ll also likely have plenty of sunny days.
What are the average temperatures in Seattle in September?
The average high temperature in Seattle in September is in the low 70s Fahrenheit (around 22 degrees Celsius), and the average low temperature is in the mid-50s Fahrenheit (around 13 degrees Celsius).
Is Seattle humid in September?
Seattle’s humidity in September is generally moderate. It’s not as humid as some other parts of the country, but it can feel damp at times, especially during or after rainfall.
What activities are good in Seattle in September?
September is a great time for outdoor activities in Seattle, such as hiking, biking, kayaking, and exploring the city’s parks and gardens. There are also many festivals and events happening during this time of year.
Summary
Seattle weather in September is typically mild and pleasant, with average high temperatures in the low 70s Fahrenheit (around 22 degrees Celsius) and increasing rainfall compared to the summer months. It’s a good time to visit, offering a mix of sunshine and comfortable temperatures for outdoor activities. Dressing in layers is recommended to adapt to changing weather conditions.
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