Weather in Bari in September 2025
Average weather
Average temperature in Bari in September
The expected average maximum temperature in September is +27°C with a maximum of +35°C and a minimum of +16°C.
The average maximum temperature goes down 5% by the end of the month, compared with the beginning of the month, from +26°C to +25°C.
Is Bari warm or cold in September?
Bari is typically warm in September.
Maximum temperatures go down compared to the previous month from +29°C to +25°C. The minimum temperature also goes down from +23°C to +19°C.
It’s generally warm, but pack a long-sleeve shirt for evenings.
Take a look at how September is compared to other months in Bari:
Water temperature in Bari in September
Water in Bari in September is Comfortable. It varies from +22°C to +28°C, with an average of +25°C. This is almost similar to the air temperature, which averages +25°C.
The water temperature in September is one of the warmest of the entire year:
Can you swim in Bari in September?
Climate in Bari in September
| August | September | October | ||||
|---|---|---|---|---|---|---|
| Avg. temperature | ||||||
| +29°C | +25°C | +21°C | ||||
| Min. temperature | ||||||
| +16°C | +10°C | +8°C | ||||
| Max. temperature | ||||||
| +40°C | +37°C | +34°C | ||||
| Rainfall | ||||||
| 25 mm | 52 mm | 60 mm | ||||
| Wind | ||||||
| 2 m/s | 2 m/s | 2 m/s | ||||
| Avg. water temperature | ||||||
| +26°C | +25°C | +20°C | ||||
| Humidity | ||||||
| 63% | 70% | 76% | ||||
| Air pressure | ||||||
| 1012 HPa | 1014 HPa | 1016 HPa | ||||
| Sunny days | ||||||
| 20 | 14 | 12 | ||||
| Cloudy days | ||||||
| 1 | 2 | 6 | ||||
| Rainy days | ||||||
| 8 | 10 | 11 | ||||
| Snowy days | ||||||
| 0 | 0 | 0 | ||||
September typically has worse weather conditions compared to August. It’s getting colder in September. From +29°C in the day, the average maximum temperature lowers to +25°C. Prepare for more rain. Average rainfall goes from 25 mm to 52 mm. Humidity rises from 63% to 70%. The average wind speed doesn’t change much during September, staying around 2 m/s. The days becoming less sunny, going from 20 sunny days in August to 14 in September.
Next month (October) brings a further decline in the weather.
Wind
The average wind speed is 3 m/s getting up to 9 m/s which is a medium breeze. You can feel it, especially getting out of the water.
The average wind speed in Bari is gradually increasing during September, going from 2 m/s to 3 m/s over the course of the month.
Rain
How was the weather last September in Bari?
Climate Change over Years
The climate in Bari in September has not changed much over the last 43 years.
The average temperature was the lowest in 1980 (+18°C) and the highest in 2023 (+22°C). The driest year was 1989 with only 375 mm of rainfall, and the wettest year was 2019 with 983 mm.
FAQ
Is September a good time to visit Bari?
Can you sunbathe in Bari in September?
Can you swim in Bari in September?
Is Bari rainy in September?
Is it sunny in Bari in September?
Other cities in Italy
Monthly weather in Bari
Source of the data
For this page, we’ve looked at the typical weather in Bari, 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.