Naples weather
Our guide to the weather in Naples during January
We've looked at the most up-to-date weather data for Naples, covering the last 12 years up to 2026, plus we've asked our team of travel bloggers for their first-hand experiences in order to answer the most frequently asked questions about Naples weather in January.
How warm is it in Naples during January?
January is typically the coolest month in Naples. The temperature reaches around 22℃ during the daytime, falling away to 16℃ at night. The UV index will be moderate at this time of year, so not something to worry about for the average person. However, if you're going to be outside for long periods it's worth wearing a broad spectrum SPF 30+ sunscreen and UV-blocking sunglasses. Remember that bright surfaces, such as water and sand increase UV exposure.
Does it rain in Naples during January?
On average, there will be 2 rainy days during the month, amounting to 44.1mm in total. That's broadly comparable with the amount of rain we see in England during the summer months, and would be considered dry. There's a small chance that you'll catch a thunderstorm during your trip.
Is it windy in Naples during January?
You're unlikely to experience any strong winds. Expect a gentle breeze that increases to moderate at times during January. With warm air temperatures and high humidity, any breeze will feel warm but refreshing.
How warm is the sea in Naples during January?
The water around Naples is around 20℃ during January. It will feel a little on the cool when first entering, but you'll warm up quickly. Most kids will have no problem with this temperature, but those who feel the cold are unlikely to want to swim.
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