Weather in Ancona in September 2025
Average weather
Average temperature in Ancona in September
Going from a maximum of +32°C during the day to a minimum of +16°C during the night, the temperature in September averages around +27°C.
The average maximum temperature goes down 25% by the end of the month, compared with the beginning of the month, from +28°C to +24°C.
Is Ancona warm or cold in September?
Ancona is typically warm in September.
Maximum temperatures go down compared to the previous month from +27°C to +23°C. The minimum temperature also goes down from +22°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 Ancona:
Water temperature in Ancona in September
Water in Ancona in September is Comfortable. It varies from +20°C to +27°C, with an average of +24°C. Note that the air temperature is lower than the water temperature, averaging around +23°C.
The water temperature in September is one of the warmest of the entire year:
Can you swim in Ancona in September?
Climate in Ancona in September
| August | September | October | ||||
|---|---|---|---|---|---|---|
| Avg. temperature | ||||||
| +27°C | +23°C | +19°C | ||||
| Min. temperature | ||||||
| +13°C | +9°C | +6°C | ||||
| Max. temperature | ||||||
| +40°C | +32°C | +31°C | ||||
| Rainfall | ||||||
| 42 mm | 57 mm | 52 mm | ||||
| Wind | ||||||
| 2 m/s | 2 m/s | 1 m/s | ||||
| Avg. water temperature | ||||||
| +25°C | +24°C | +20°C | ||||
| Humidity | ||||||
| 67% | 72% | 77% | ||||
| Air pressure | ||||||
| 1013 HPa | 1015 HPa | 1016 HPa | ||||
| Sunny days | ||||||
| 18 | 14 | 9 | ||||
| Cloudy days | ||||||
| 3 | 5 | 10 | ||||
| Rainy days | ||||||
| 5 | 7 | 9 | ||||
| Snowy days | ||||||
| 0 | 0 | 0 | ||||
September typically has worse weather conditions compared to August. It’s getting colder in September. From +27°C in the day, the average maximum temperature lowers to +23°C. Prepare for more rain. Average rainfall goes from 42 mm to 57 mm. Humidity rises from 67% to 72%. The average wind speed doesn’t change much during September, staying around 2 m/s. The days becoming less sunny, going from 18 sunny days in August to 14 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 Ancona is gradually increasing during September, going from 2 m/s to 2 m/s over the course of the month.
Rain
How was the weather last September in Ancona?
Climate Change over Years
The climate in Ancona in September has not changed much over the last 43 years.
The average temperature was the lowest in 1980 (+16°C) and the highest in 2022 (+20°C). The driest year was 1983 with only 355 mm of rainfall, and the wettest year was 2023 with 1248 mm.
FAQ
Is September a good time to visit Ancona?
Can you sunbathe in Ancona in September?
Can you swim in Ancona in September?
Is Ancona rainy in September?
Is it sunny in Ancona in September?
Other cities in Italy
Monthly weather in Ancona
Source of the data
For this page, we’ve looked at the typical weather in Ancona, 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.