Italy
Naples in January: weather, sea & travel advice
This month's data profile
Rain shapes the decision
Naples in January is climatically mixed. The average daily high is around 11 °C, and the sea is about 15 °C. With about 11 rainy days it is wet.
Historical monthly averages, not a weather forecast. Individual days and years can differ substantially.
Rank among 12 monthly averages
33/100 · #12
Warmth
#12
Dryness
#10
Sun
#11
Sea warmth
#10
Published best categories: none
Naples · JanuaryPhoto: Sergey Ashmarin · CC BY-SA 3.0Climate facts
- Average high
- 11 °C
- Average low
- 4 °C
- Sea
- 15 °C
- Rainy days (est.)
- 11 rainy days (est.)
- Sun (est.)
- 2 h/day
- Humidity
- 85 %
Climate evidence with direct month comparison
The highlighted row is the selected month. Precipitation total and rainy days are separate monthly averages.
| Month | Avg high °C | Avg low °C | Rainy days (est.) | Precipitation mm | Sun h/day (est.) | Humidity % | Wind m/s | Sea °C | Score |
|---|---|---|---|---|---|---|---|---|---|
| December | 12 | 6 | 12 | 81 | 2.0 | 85 | 2.3 | 17 | 36 |
| January (selected) | 11 | 4 | 11 | 75 | 2.2 | 85 | 2.2 | 15 | 33 |
| February | 12 | 4 | 10 | 60 | 3.2 | 83 | 2.3 | 14 | 38 |
How do the previous and next months compare?
Baseline: January (33/100)
Positive and negative values show the change from the selected month.
| Score Δ | Average high Δ | Average low Δ | Rainy days Δ | Rain Δ | Sun Δ | Humidity Δ | Wind Δ | Sea Δ | |
|---|---|---|---|---|---|---|---|---|---|
| December | +3 | +1.3 °C | +1.3 °C | +0.5 | +6.3 mm | -0.2 h | -0.2 % | ±0 m/s | +1.8 °C |
| February | +5 | +0.7 °C | -0.2 °C | -1.5 | -14.7 mm | +1 h | -2.5 % | ±0 m/s | -0.9 °C |
All twelve months in context
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Useful next decisions
Frequently asked questions
How warm is Naples in January?
The average daily high is around 11 °C, with an average daily low of about 4 °C.
Can you swim in Naples in January?
The sea is about 15 °C (cold).
Does it rain a lot in Naples in January?
The curated estimate is about 11 rainy days per month, not a directly measured long-term average. Total precipitation averages around 75 mm for the month. A rainy day does not mean all-day rain.
When is the best time to visit Naples?
By the climate score, May, June, July and September are the strongest months for Naples. For a beach trip: June, July, August and September. January is not among them.