Weather in Palermo in September

Prime time. If you get to pick your dates, September is the one. Highs average 28.4 °C, lows 21.2 °C, and rain falls on 9 days — nothing in the month is working against you.

September ranks 4 of 12 in Palermo: past the worst of the year but short of May, which is the month to book if the dates are open.

Rain on 9 days, 1 of them heavy. Enough to need a plan B, not enough to need a plan around it. Pack for 28.4 °C days and 21.2 °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: 8 days top 30 °C — hot spells arrive, but they break. Across the twenty years measured, the hottest September day reached 36.5 °C and the coldest night fell to 15.9 °C, and the wettest single day dropped 51 mm — roughly 84% of the month's rain in one day.

September is moderately variable: 14 mm in the driest year against 210 mm in the wettest, around an average of 61 mm. Roughly two Septembers in three land near that average, and the third does something else entirely.

Wind is light at 10.4 km/h, so the temperature on the page is close to the temperature on your skin, and humidity is unremarkable at 69%.

How September sits in the year

The month is on the way down: 4.2 °C cooler than August, with October dropping another 3.6 °C. The first week and the last are not the same trip. Rain has already shifted: 6 days more than August had.

Daylight in September

12.5 hours of daylight, losing 1.2 hours across the month. That is between Palermo's extremes of 14.8 and 9.5 hours, so days are long enough not to constrain the plan.

Sea temperature

The sea sits at about 25.6 °C in September — warm enough to stay in as long as you like. This is the warmest the water gets all year.

How busy it gets

Shoulder. The value months — prices ease off and you get the place closer to itself. September is the value pick for Palermo: it scores within 14 points of May without carrying May's prices.

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

September in Palermo versus nearby

If Palermo is one option among several, the nearby comparison is worth making. Catania is the weaker option in September — 2.7 °C warmer, 1 day less rain. Taormina is close enough to be a coin toss — within a degree on temperature, 1 day more rain.

So: September works, with May the better month by 14 points if the dates can move. If they cannot, nothing here should stop you booking.

Every month in Palermo

See all twelve months in Palermo, or where else to go in September.