Weather in Kalamata in December

Shoulder season. December sits in between. You will get good days and you will lose some. Highs average 16 °C, lows 10.5 °C, and rain falls on 13 days — nothing in the month is working against you.

December ranks 10 of 12 — near the bottom of Kalamata's year. May is the month that works, and the swing between the two is 38 points, which is a different holiday rather than a slightly better one.

Rain on 13 days, 4 of them heavy. Enough to need a plan B, not enough to need a plan around it. Pack for 16 °C days and 10.5 °C nights; the spread matters more here than any single number.

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 22.5 °C and the coldest night fell to 1.8 °C, and the wettest single day dropped 43 mm — roughly 38% of the month's rain in one day.

December is moderately variable: 18 mm in the driest year against 207 mm in the wettest, around an average of 113 mm. Roughly two Decembers in three land near that average, and the third does something else entirely.

Wind is light at 12.3 km/h, so the temperature on the page is close to the temperature on your skin, and humidity runs at 78%, high enough to notice on the warm days without dominating them.

How December sits in the year

Temperatures hold steady either side: 20.3 °C in November, 16 here, 14.5 in January. Nothing about the timing within the month matters much.

Daylight in December

December sits at the dark end of Kalamata's year — 9.6 hours of daylight against 14.7 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 18.7 °C in December — swimmable, but it takes a moment to commit. The sea peaks at 26.7 °C in August and bottoms out at 15.7 °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 Kalamata versus nearby

If Kalamata is one option among several, the nearby comparison is worth making. Pátra is close enough to be a coin toss — within a degree on temperature, 1 day more rain. Athens is close enough to be a coin toss — within a degree on temperature, 3 days less rain.

So: December is a compromise. May is 31 points better and is what Kalamata 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 Kalamata

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