So, you’re looking at the Lisbon 10 day weather forecast and wondering if you should pack that heavy wool coat or just a light hoodie. Honestly? Lisbon is a bit of a trickster in January. It’s 2026, and while the rest of Europe is basically shivering in sub-zero temps, Lisbon is sitting pretty with daytime highs hovering around 53°F to 60°F. But don't let those numbers fool you.
The Atlantic wind is real. It’s got a way of cutting through a thin sweater like it’s not even there.
What the Next 10 Days Actually Look Like
If you're heading out this week, here is the raw deal based on the latest data for the period starting Sunday, January 18.
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Today is actually one of the nicer days. We’re looking at a high of 53°F and mostly sunny skies. But things get "typical" pretty fast. By Tuesday and Wednesday, the clouds roll in, and the humidity spikes to about 90%. That’s when it starts to feel "damp-cold"—the kind of cold that lives in your bones.
Expect light rain to be a frequent guest. Monday and Tuesday show a 15% to 40% chance of rain, but it’s usually that misty Atlantic drizzle rather than a massive downpour. The "wettest" days in this 10-day stretch look to be Thursday, January 22, and Friday, January 23, where the wind speed picks up to about 17 mph from the west.
Why the "Average" Temperature is a Lie
People see "58 degrees" and think it’s t-shirt weather. It isn't.
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Lisbon’s architecture is stunning, but those stone buildings and narrow Alfama streets are essentially giant refrigerators in the winter. When the sun goes down, the temperature drops to about 44°F to 52°F. You’ll feel every bit of that drop.
Surviving the Lisbon 10 Day Weather Forecast
You’ve gotta master the "onion" method. Layers are your best friend.
- The Base: A long-sleeve tee or a breathable merino wool shirt.
- The Mid: A solid sweater or a fleece.
- The Shell: This is the big one. You need a waterproof jacket. Not just "water-resistant." If it’s windy and drizzling, a regular cotton hoodie will just soak up the moisture and make you miserable.
Also, footwear. Lisbon is the city of seven hills, and those "calçada" (limestone) pavements are famous for being slippery when bone-dry. Add a little rain? They’re basically a skating rink. Leave the heels at home. Wear sneakers with good grip or waterproof ankle boots.
What to Do When the Rain Hits
If the Lisbon 10 day weather forecast shows a gray cloud emoji for your entire trip, don't panic. Lisbon is actually kinda great in the rain if you know where to hide.
- The Oceanário de Lisboa: It’s one of the best aquariums in the world. You’re indoors, it’s warm, and you can watch sharks circle for three hours while it pours outside.
- Time Out Market (Mercado da Ribeira): It’s covered. It’s packed with the best food in the city. You can go from eating Michelin-star octopus to local cheeses without ever opening an umbrella.
- Fado in Alfama: Rain actually makes the atmosphere for Fado better. There’s something about the "saudade" (longing) of the music that just hits different when you can hear the rain on the cobblestones outside a tiny, candlelit tavern.
The Real Talk on Sunshine
Even in the middle of January, Lisbon usually averages about 5 hours of sunshine a day. That’s more than almost anywhere else in Europe right now. You’ll likely see "four seasons in one day." It’ll rain at 10:00 AM, be blindingly sunny at 1:00 PM, and then get windy and chilly by 4:00 PM.
Basically, keep your sunglasses in your pocket and your umbrella in your hand.
Actionable Next Steps
- Check the wind speed: If it’s over 15 mph, that "mild" temperature will feel 5 degrees colder.
- Book indoor tours early: Places like the Jerónimos Monastery or the Gulbenkian Museum get crowded fast when the sky turns gray.
- Pack a portable power bank: Cold weather and constant photo-taking (because even gray Lisbon is gorgeous) will drain your phone battery faster than you think.
- Don't trust the 10-day forecast blindly: In Lisbon, the Atlantic can change the "plan" in three hours. Check the "hour-by-hour" every morning before you leave your hotel.
Stick to the indoor museums on Thursday and Friday when the rain chance peaks at 45%, and save your walking tours for the clearer skies predicted toward the end of the month, like Tuesday, January 27, when things finally dry out.