Weather in Naples in March

A good month. March works. It is not the peak, but nothing about it fights you. Highs average 15.9 °C, lows 7.9 °C, and rain falls on 11 days — nothing in the month is working against you.

March ranks 7 of 12 in Naples: past the worst of the year but short of May, which is the month to book if the dates are open.

Rain on 11 days, 2 of them heavy. Enough to need a plan B, not enough to need a plan around it. Pack for 15.9 °C days and 7.9 °C nights; the spread matters more here than any single number.

What the averages hide

The averages here are honest — no hidden extremes worth planning around. Across the twenty years measured, the hottest March day reached 23.6 °C and the coldest night fell to -0.6 °C, and the wettest single day dropped 35 mm — roughly 50% of the month's rain in one day.

March is moderately variable: 15 mm in the driest year against 143 mm in the wettest, around an average of 70 mm. Roughly two Marchs in three land near that average, and the third does something else entirely.

Wind is light at 8.2 km/h, so the temperature on the page is close to the temperature on your skin, and humidity runs at 81%, high enough to notice on the warm days without dominating them.

How March sits in the year

The month is on the way up: 2.8 °C warmer than February, and April adds another 3.6 °C. Late in the month feels noticeably different from the start of it, which is worth knowing if the trip is short.

Daylight in March

11.9 hours of daylight, gaining 1.4 hours across the month. That is between Naples's extremes of 15.1 and 9.3 hours, so days are long enough not to constrain the plan.

Sea temperature

The sea sits at about 14.5 °C in March — cold — a quick dip rather than a swim, and a wetsuit if you are in for longer. The sea peaks at 26.7 °C in August and bottoms out at 14.3 °C — water lags the air by a month or two, which is why the best swimming often comes after the best weather.

How busy it gets

Quiet. Few other visitors, cheaper rooms, and a real chance some seasonal operators are shut.

Crowd levels are estimated from climate desirability and school-holiday calendars, not from visitor numbers.

March in Naples versus nearby

If Naples is one option among several, the nearby comparison is worth making. Positano is close enough to be a coin toss — within a degree on temperature, the same number of rain days. Rome is close enough to be a coin toss — within a degree on temperature, 1 day less rain.

So: March works, with May the better month by 18 points if the dates can move. If they cannot, nothing here should stop you booking.

Every month in Naples

See all twelve months in Naples, or where else to go in March.