December in Seattle is a truly unique experience, a time when the city embraces its famously moody skies and transforms into a cozy, festive wonderland. Packing right means you can fully immerse yourself in the holiday spirit, from bustling Christmas markets to serene ferry rides, all while staying warm and dry.
We'll tune the list to your exact trip — dates, activities, and weather.
Expect cool, damp weather in Seattle during December. Average high temperatures hover around 45°F (7°C), while lows typically dip to 37°F (3°C). Rainfall is a given, with an average of 5.7 inches (145mm) throughout the month, so be prepared for consistent drizzle and occasional heavier showers. Snow is less common but not unheard of. Humidity levels are consistently high, often around 85-90%, contributing to the feeling of chill, and you'll experience limited daylight, with around 8-9 hours of daylight.
The key to dressing for Seattle in December is layers and waterproofs. Locals favor a smart-casual approach, prioritizing comfort and practicality without sacrificing style. Think warm sweaters, cozy scarves, and waterproof outerwear. Given the casual vibe, you won't need anything too fancy, but a nice outfit for a holiday dinner wouldn't be out of place.
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Waterproof and Windproof Outer Shell
This is non-negotiable for Seattle in December to shield you from the constant drizzle and brisk winds.
Insulated, Waterproof Boots with Good Traction
Crucial for keeping your feet warm and dry while navigating wet sidewalks and potential slush.
Wool or Fleece Sweaters
These provide essential warmth as base or mid-layers under your waterproof jacket.
Warm Hat, Gloves, and Scarf
These accessories are vital for retaining body heat, especially during evening strolls and outdoor activities.
Travel Umbrella
While a good waterproof jacket covers you, a compact umbrella offers extra protection and is a local staple.
Moisture-Wicking Base Layers
Help regulate body temperature and keep you comfortable if you're moving between indoor and outdoor environments.
Portable Charger/Power Bank
Cold weather can drain phone batteries faster, and you'll be using your phone for navigation and photos.
Small, Waterproof Daypack
Perfect for carrying your essentials and protecting them from the elements while exploring the city.
Thermos or Insulated Travel Mug
Keep your coffee or tea warm as you wander the city and enjoy the festive atmosphere.
Don't fight the weather; embrace it! A good quality waterproof jacket and comfortable, waterproof shoes are practically a uniform in Seattle during the colder months. Don't worry about looking too casual – practicality reigns supreme here.
The temperature can fluctuate throughout the day, and moving between cozy indoor spaces and the brisk outdoors means you'll want to be able to adjust your clothing easily. Thin, warm layers are your best friend.
With wet streets and potentially some icy patches, especially in the mornings, good traction on your shoes is important to prevent slips and falls. Opt for boots with rubber soles.
With shorter days, plan your outdoor sightseeing for the brightest parts of the day. Embrace the cozy indoors in the evenings with world-class museums, coffee shops, and restaurants.
The consistent dampness outside might make you think your skin is fine, but indoor heating can be drying. Pack a good moisturizer and lip balm to keep your skin happy.
While it's more common to have rain, snow is definitely possible in Seattle in December. It's usually lighter and doesn't last long, but be prepared for the possibility with warm, waterproof footwear and layers.
December can be quite festive and popular due to holiday events and markets. While it's not as crowded as peak summer months, popular attractions and downtown areas can see a good number of visitors, especially on weekends leading up to Christmas.
Seattle offers a magical experience in December! You can explore the various Christmas markets, enjoy holiday light displays, visit the iconic Space Needle and Pike Place Market, go ice skating, or take a ferry for scenic views of the Puget Sound (dress warmly!). Many museums and theaters also have special holiday programming.
Yes, almost! While you don't need a full-on wetsuit, a reliable waterproof jacket and waterproof shoes are absolutely essential. An umbrella is also highly recommended. Being prepared for the rain will significantly enhance your enjoyment of the city.
Seattle has a good public transportation system, including buses and the Link Light Rail, which can be very useful for getting around, especially with potentially wet weather. Ride-sharing services are also readily available. If you plan on exploring outside the city center, renting a car might be an option, but be mindful of potential traffic and parking.