Weather in Bari in December

Shoulder season. December sits in between. You will get good days and you will lose some. Highs sit at 14.1 °C and the day is short; this is an indoors-with-excursions month, not an outdoors-all-day one.

December ranks 11 of 12 — near the bottom of Bari's year. May is the month that works, and the swing between the two is 29 points, which is a different holiday rather than a slightly better one.

Rain on 11 days, 2 of them heavy. Enough to need a plan B, not enough to need a plan around it. Layers, and a genuinely waterproof outer — at 14.1 °C the difference between a good day and a miserable one is entirely down to what you are wearing.

What the averages hide

Averages flatten a month, and this one hides a few things: the day barely swings — 5.5 °C between the overnight low and the afternoon high. Across the twenty years measured, the hottest December day reached 20.7 °C and the coldest night fell to 1.1 °C, and the wettest single day dropped 36 mm — roughly 53% of the month's rain in one day.

December is moderately variable: 1 mm in the driest year against 165 mm in the wettest, around an average of 68 mm. Roughly two Decembers in three land near that average, and the third does something else entirely.

Wind is light at 13.7 km/h, so the temperature on the page is close to the temperature on your skin, and humidity runs at 81%, which at 14.1 °C means damp rather than muggy — the kind of cold that gets into a coat and stays there.

How December sits in the year

Temperatures hold steady either side: 18.3 °C in November, 14.1 here, 12.9 in January. Nothing about the timing within the month matters much.

Daylight in December

December sits at the dark end of Bari's year — 9.2 hours of daylight against 15.1 at midsummer, holding steady all month. Sightseeing days are genuinely shorter, and an itinerary built for summer will not fit.

Sea temperature

The sea sits at about 15.2 °C in December — cold — a quick dip rather than a swim, and a wetsuit if you are in for longer. The sea peaks at 25.9 °C in August and bottoms out at 13.8 °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.

December in Bari versus nearby

If Bari is one option among several, the nearby comparison is worth making. Dubrovnik is the weaker option in December — within a degree on temperature, 2 days more rain. Positano is close enough to be a coin toss — within a degree on temperature, 2 days more rain.

So: December is a compromise. May is 25 points better and is what Bari is actually like at its best — worth moving the trip for if that is possible, and worth adjusting expectations for if it is not.

Every month in Bari

See all twelve months in Bari, or where else to go in December.