Naples is tricky. Honestly, if you’re looking at the Naples ten day forecast and expecting a simple "winter" vibe, you’re probably going to end up shivering near the Port or sweating through your sweater in a crowded pizzeria. Right now, as we sit in mid-January 2026, the city is doing that classic Neapolitan dance between crisp Mediterranean sun and damp, bone-chilling humidity.
The current numbers look innocent enough. We’re seeing a daytime high of 61°F today, Saturday, January 17th. That sounds like light jacket weather, right? Wrong. The northeast wind is currently kicking at 8 mph, and with humidity sitting at a heavy 66%, that "real feel" is a lot different when you’re standing in the shadow of a narrow alley in the Quartieri Spagnoli.
The Reality of the Naples Ten Day Forecast
People see "sunny" and think "balmy." Kinda wish it worked that way. Tomorrow, Sunday the 18th, things take a turn. We’re looking at a 75% chance of rain with highs of 61°F and lows of 50°F. It isn't just a drizzle; it's that soaking light rain that makes the basalt pietra serena streets slippery enough to challenge even the most experienced local scooter driver.
The trend for the rest of the week is basically a slow slide into cooler, gray territory. By Tuesday, January 20th, the high drops to 54°F and the wind picks up significantly, gusting from the northeast at 16 mph. If you’re planning to take the ferry to Capri or Ischia around then, you’ve been warned—the bay gets choppy when that wind starts howling.
Why the "Feels Like" Temperature Lies to You
In a city like Naples, the raw data from the Naples ten day forecast only tells half the story. You’ve got the sea air. It’s salty, it’s damp, and it clings to you.
- Humidity spikes: We are seeing humidity levels ranging from 57% to 81% over the next week.
- The Shade Factor: In the historic center, the buildings are so tall and the streets so narrow that the sun rarely hits the pavement. It can be 10 degrees colder in those alleys than it is on the Lungomare.
- Night Drops: Lows are hovering between 44°F and 50°F. That’s the kind of cold that gets into your bones because most older Neapolitan buildings aren't exactly known for high-grade insulation.
What's Actually Happening Day-by-Day
Looking further out into next weekend, Saturday the 24th and Sunday the 25th are looking pretty wet. We're talking a 90% chance of rain on both days according to some models, with temperatures stubbornly stuck in the high 50s. Basically, if you aren't carrying a sturdy umbrella (not those cheap ones they sell for 5 Euro at the Metro entrance), you're going to have a rough time.
The wind direction is also shifting. Toward the end of the ten-day window, we see the wind moving from the South and Southeast. This usually brings in more moisture from the Tyrrhenian Sea, which explains why the rain chances jump from 15% on Thursday to nearly 45% by Monday the 26th.
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Survival Tips for January in Naples
Don't trust the sun. It’s a liar in January. You'll see a clear blue sky, walk out in a t-shirt, and then the wind hits you as you turn a corner toward the Castel dell'Ovo.
- Do the "Onion": That's what the locals call it (vestirsi a cipolla). Layers. A thermal base, a light sweater, and a wind-resistant outer shell.
- Waterproof Everything: Leather shoes are great, but make sure they're treated. Wet feet in 46°F weather is a recipe for a miserable trip.
- The Museum Pivot: When the forecast shows that 75% rain chance for Sunday, don't plan a walk up to Castel Sant'Elmo. That’s your day for the National Archaeological Museum.
The Naples ten day forecast is a tool, not a promise. Use it to time your outdoor walks for the brief windows of "partly sunny" conditions we expect on Thursday the 22nd and Friday the 23rd.
Next Steps for Your Trip
Check the ferry schedules early if you’re traveling between the 19th and 21st, as the 16 mph winds could trigger cancellations. Keep a compact umbrella in your bag at all times, especially since the rain chance never truly hits zero this week. Focus your outdoor sightseeing on the 17th and 22nd when the UV index hits its "peak" of 2—it’s the best light you’re going to get for photos.