Embrace the Layering Mantra
Seriously, it's the Golden Rule for San Francisco packing. The weather can change in an instant, from sunny and mild to foggy and chilly. Be prepared to add or remove layers throughout the day.
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Weather in San Francisco in January
January in San Francisco sees average high temperatures around 57°F (14°C) and average lows dipping to 46°F (8°C). It's right in the middle of the rainy season, so expect around 10 rainy days with an average of 4.5 inches (114mm) of precipitation. Snow is virtually unheard of. Humidity levels typically hover around 75-80%, making the air feel damp, and you'll get about 9-10 hours of daylight to explore.
What to wear in San Francisco in January
San Francisco locals favor a practical, laid-back style, and January is all about layering. Think comfortable and functional rather than overly formal. Don't be afraid to mix and match; the key is being able to add or shed layers as the day progresses and the famous San Francisco fog rolls in or out.
Essentials for San Francisco in January
Waterproof and Windproof Jacket
A good quality waterproof and windproof jacket is your best friend in January, offering protection from both rain showers and the often-chilly breezes off the Pacific.
Warm, Layerable Sweaters/Fleece
Crucial for warmth under your jacket, these allow you to adapt to the fluctuating temperatures throughout the day, especially when the fog rolls in.
Comfortable, Waterproof Walking Shoes
With San Francisco's notorious hills and potential rain, comfortable, waterproof shoes are essential for exploring the city without discomfort or wet feet.
Beanie or Warm Hat
To combat the cool, damp air and retain body heat, especially when you're out and about in the evenings or near the water.
Lightweight Scarf
A versatile accessory for added warmth around your neck and to protect against unexpected drafts or chilly winds.
Compact Umbrella
Given the likelihood of rain, a small, durable umbrella is a must-have for staying dry during sudden downpours.
Gloves
While not always necessary, a pair of lightweight gloves will be appreciated on particularly cold or windy days, especially in the early mornings or evenings.
Long-Sleeved T-shirts/Thermal Tops
Excellent base layers for extra warmth without bulk, perfect for wearing under sweaters or jackets.
Durable Daypack
Essential for carrying your layers, umbrella, water bottle, and any souvenirs as you navigate the city throughout the day.
Portable Power Bank
With all the walking and navigating, you'll want to keep your phone charged for maps, photos, and staying connected.
Pro tips
Don't Underestimate the Hills
San Francisco is famous for its steep streets. Prioritize comfortable shoes with good grip, especially if you plan on doing a lot of walking. Your feet will thank you!
Check the Forecast Daily, But Be Ready for Anything
While forecasts provide a good guide, San Francisco weather can be fickle. Always have that waterproof layer handy, even if rain isn't explicitly predicted.
Evenings are Always Cooler
Even if the day is mild, temperatures drop significantly once the sun goes down. Always bring an extra warm layer for evening outings, especially near the water.
Public Transportation is Your Friend
With potential rain and those famous hills, utilizing Muni (bus and streetcar) or BART can make getting around much easier and more comfortable, especially if your feet are tired from walking.
Frequently asked
Is January a good time to visit San Francisco?
Absolutely! While it's the rainy season, January offers fewer crowds at popular attractions, and the city takes on a cozy, local vibe. Plus, there are often great deals on flights and accommodation. Just be prepared for the weather!
What kind of coat should I bring for San Francisco in January?
A waterproof and windproof jacket is ideal. Look for one that's insulated enough for cool temperatures but also breathable, so you don't overheat if you're walking uphill. A packable down jacket can also be a great layering piece.
Will it be too wet to enjoy outdoor activities?
While you should expect some rain, it rarely rains all day. You'll likely have plenty of dry spells to enjoy outdoor activities. Plus, some of San Francisco's charm is best experienced in a light mist or fog! Museums and indoor attractions are abundant for rainy days.
Do I need to worry about snow or ice?
Snow in San Francisco is an extremely rare event, almost unheard of, and ice is equally uncommon in the city itself. You definitely don't need to pack for winter conditions typically associated with snow and ice.
What should I wear for a fancy dinner in San Francisco in January?
San Francisco's dress code is generally relaxed, even for upscale dining. For a fancy dinner, 'smart casual' is usually perfect. Think dark jeans or slacks, a nice sweater or blouse, and a stylish jacket. No need for ball gowns or tuxedos unless it's a very specific event!
Is it foggy in January?
While the famous summer fog is less prevalent in January, you can still experience foggy mornings or evenings, especially closer to the coast. It adds to the city's mystique, so embrace it!