Palermo is warmest in July, averaging 33° by day and 22° at night. The wettest month is May with 78 mm, and the year brings about 480 mm in total.
Month by month
| Month | High | Low | Rain | Sea | Daylight | Good for |
|---|---|---|---|---|---|---|
| January | 14° | 8° | 37 mm | 15° | 9.6 h | Mild |
| February | 15° | 8° | 28 mm | 15° | 10.5 h | Mild |
| March | 16° | 9° | 50 mm | 15° | 11.7 h | Sightseeing |
| April | 19° | 11° | 33 mm | 16° | 13.0 h | Sightseeing |
| May | 24° | 14° | 78 mm | 19° | 14.1 h | Sightseeing |
| June | 29° | 19° | 15 mm | 24° | 14.6 h | Beach weather |
| July | 33° | 22° | 6 mm | 27° | 14.4 h | Beach weather |
| August | 33° | 23° | 16 mm | 28° | 13.5 h | Beach weather |
| September | 29° | 20° | 39 mm | 26° | 12.2 h | Beach weather |
| October | 25° | 17° | 50 mm | 23° | 11.0 h | Sightseeing |
| November | 20° | 13° | 72 mm | 20° | 9.9 h | Sightseeing |
| December | 16° | 10° | 56 mm | 17° | 9.4 h | Mild |
High and low are average daily maximum and minimum, rain is typical monthly total, sea is the average surface temperature, daylight is the hours between sunrise and sunset mid-month. Climate normals from NASA POWER and NOAA MUR — averages, not promises.
When to go
Beach weather: June, July, August and September — highs around 31°, nights no colder than 19°, and at most 39 mm of rain in a month. The sea sits at 24–28° then.
Walking the city: March, April, May, October and November — highs of 16–25° and no more than 78 mm of rain a month.