Naples Weather in January
January in Naples typically sees daytime highs of 13°C (55°F) and nighttime lows of 8°C (46°F). Rainfall is also possible this month, so it's worth packing an umbrella. It falls within the winter season.
Rainfall in Naples in January
Historically, January sees about 14 days of rain, with a monthly average of 123 mm (4.8 in). The rain this month tends to fall in heavier spells rather than light drizzle. When it rains, showers can be significant.
Temperature in Naples in January
Temperatures in Naples in January top out at 13°C (55°F) and drop to 8°C (46°F) overnight. This month falls in the winter season. A light jacket or extra layer can be useful, especially outside the warmest hours of the day. At 8°C (46°F) overnight, it gets properly cold after dark. On the bright side, cold nights tend to make for excellent sleeping conditions. The city often sees its mildest temperatures during January.
Sunshine in Naples in January
The area enjoys a moderate level of sunlight, with around 114 hours. It's a good balance between sunny and cloudy days.
Average water temperature in January
The water is 15°C (59°F) this month — cool enough to feel refreshing on a warm day, but cold enough that most people won't stay in for long without a wetsuit.Our weather planner can help you find worldwide destinations with pleasant weather during this period. May, June, July, August and September typically offer the best weather for Naples.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Italy, check out our Naples's climate page.
Naples Temperature in January
Min Temperature
8°C (46°F)
Max Temperature
13°C (55°F)
Water Temperature
15°C (59°F)
Chance of Rain
47%
Precipitation
123 mm (4.8 in)
Rainy days
14 days
Humidity
75%
Sunshine
114 hours
Percentage Sunshine
Daily Historical Temperatures
51-year average (1976-2026)
Based on our historical records, temperatures in Naples typically stay consistent throughout January, with daily highs averaging around 13°C (55°F). Nights are cold, with lows around 5°C (41°F).
Average temperatures in January
Daily Historical Precipitation
51-year average (1976-2026)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in January
Historical weather for Naples in January
Browse day-by-day weather records for Naples spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Naples historical weather extremes in January
The extremes listed below come from historical weather data collected in Naples from 1976 through 2025.
- On January 8, 2018, temperatures climbed to 21°C (70°F), marking the warmest January day on record.
- On January 7, 2017, Naples saw its coldest January day with temperatures maxing out at 2°C (36°F).
- The coldest night in January in Naples was on January 9, 1987, with a minimum of -5°C (23°F).
Best Places in Italy in January
Find out more about the weather in Italy and which places have the best travel conditions in this month. See all of Italy in January →
perfect weather
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tolerable
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What to Wear in Naples in January
Pack for changing conditions in Naples in January. Bring a mix of short and long sleeves, a warm layer like a hoodie or light jacket, and comfortable pants. The key is being able to add or remove layers as the days goes by. Prepare for significant rainfall with proper waterproof clothing and shoes. With water temperatures around 15°C (59°F), the water is quite cold for swimming. You can skip the swimwear unless you're particularly tough. Sunglasses could come in handy during the sunnier parts of your trip.What To Do in Naples in January
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Italy, check out our Naples's climate page.
Temperature Rainfall Sunshine Humidity Water Temp
See the full Naples climate overview or explore weather in Italy.
