Weather in Palermo in September 2025
Average weather
Average temperature in Palermo in September
Going from a maximum of +33°C during the day to a minimum of +18°C during the night, the temperature in September averages around +28°C.
The average maximum temperature goes down 7% by the end of the month, compared with the beginning of the month, from +27°C to +26°C.
Is Palermo warm or cold in September?
Palermo is typically warm in September.
Maximum temperatures go down compared to the previous month from +30°C to +27°C. The minimum temperature also goes down from +24°C to +22°C.
It’s generally warm, but pack a long-sleeve shirt for evenings.
September is one of the warmest months in Palermo, here is the comparison with other months:
Water temperature in Palermo in September
Water in Palermo in September is Warm. It varies from +23°C to +28°C, with an average of +25°C. This is almost similar to the air temperature, which averages +27°C.
The water temperature in September is one of the warmest of the entire year:
Can you swim in Palermo in September?
Climate in Palermo in September
| August | September | October | ||||
|---|---|---|---|---|---|---|
| Avg. temperature | ||||||
| +30°C | +27°C | +24°C | ||||
| Min. temperature | ||||||
| +14°C | +14°C | +10°C | ||||
| Max. temperature | ||||||
| +42°C | +40°C | +36°C | ||||
| Rainfall | ||||||
| 20 mm | 61 mm | 84 mm | ||||
| Wind | ||||||
| 1 m/s | 1 m/s | 1 m/s | ||||
| Avg. water temperature | ||||||
| +26°C | +25°C | +22°C | ||||
| Humidity | ||||||
| 64% | 70% | 75% | ||||
| Air pressure | ||||||
| 1013 HPa | 1014 HPa | 1015 HPa | ||||
| Sunny days | ||||||
| 22 | 10 | 6 | ||||
| Cloudy days | ||||||
| 2 | 7 | 10 | ||||
| Rainy days | ||||||
| 6 | 12 | 14 | ||||
| Snowy days | ||||||
| 0 | 0 | 0 | ||||
September typically has worse weather conditions compared to August. It’s getting colder in September. From +30°C in the day, the average maximum temperature lowers to +27°C. Prepare for more rain. Average rainfall goes from 20 mm to 61 mm. Humidity rises from 64% to 70%. The average wind speed doesn’t change much during September, staying around 1 m/s. The days becoming less sunny, going from 22 sunny days in August to 10 in September.
Next month (October) brings a further decline in the weather.
Wind
The average wind speed is 2 m/s getting up to 5 m/s which is a light breeze; barely moving the tree leaves.
The average wind speed in Palermo is gradually decreasing during September, going from 2 m/s to 1 m/s over the course of the month.
Rain
How was the weather last September in Palermo?
Climate Change over Years
The climate in Palermo in September has not changed much over the last 43 years.
The average temperature was the lowest in 1980 (+20°C) and the highest in 2012 (+24°C). The driest year was 1989 with only 353 mm of rainfall, and the wettest year was 2021 with 1977 mm.
FAQ
Is September a good time to visit Palermo?
Can you sunbathe in Palermo in September?
Can you swim in Palermo in September?
Is Palermo rainy in September?
Is it sunny in Palermo in September?
Other cities in Italy
Monthly weather in Palermo
Source of the data
For this page, we’ve looked at the typical weather in Palermo, based on historical hourly weather data from January 1, 1979, to December 31, 2023.
For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.