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Ancona in September: Weather, Average temperature and Climate

Planning a trip and want to know what the weather in Ancona in September will be like? Take a look at our weather guide for Ancona, based on historical data.
Check flight prices to Ancona on Avionero:
September

Weather in Ancona in September 2025

Good Weather
Warm
☀️
Sunny
🌊
Comfortable water
Planning a trip to Ancona in September? You are in luck! The weather is generally good, with an average maximum temperature of +73°F and approximately 14 sunny days. Just be prepared for some rain, as there are usually around 7 rainy days and 57 mm of precipitation. Expect good weather and pack accordingly to enjoy the outdoors. Search flights in one click on Avionero.

Average weather

☀️
+73°F
Avg. max. temperature
+48°F
Min.
+90°F
Max.
57 mm
Total precipitation
72%
Avg. humidity
2 m/s
Avg. wind
14 ☀️
Sunny Days
5 ⛅️
Cloudy
7 🌦
Rainy
Our opinion: Ancona has good weather in September.

Average temperature in Ancona in September

Here are the expected maximum, average and minimum temperatures in Ancona for September based on the historical data.
Last Year
Historical Data

Going from a maximum of +90°F during the day to a minimum of +61°F during the night, the temperature in September averages around +81°F.

The average maximum temperature goes down 25% by the end of the month, compared with the beginning of the month, from +82°F to +75°F.

Is Ancona warm or cold in September?

Ancona is typically warm in September.

Maximum temperatures go down compared to the previous month from +81°F to +73°F. The minimum temperature also goes down from +72°F to +66°F.

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 +69°F to +81°F, with an average of +75°F. Note that the air temperature is lower than the water temperature, averaging around +73°F.

The water temperature in September is one of the warmest of the entire year:

The warmest water temperatures in Ancona are reached in August, when the average sea temperature rises to +78°F. The coldest water temperatures are in February, with an average of +53°F.

Can you swim in Ancona in September?

The water in Ancona in September is pretty comfortable (+75°F in average). Ideal for swimming, especially in outdoor pools and open water. Suitable for recreational and casual swimmers.
🦭
Cold
Below +61°F
🏄‍♂️
Fresh
61°F - 70°F
🏊
Comfortable
70°F - 77°F
👙
Warm
77°F - 82°F
🔥
Very warm
+82°C and up
Don’t forget a large beach towel or two for drying off.

Climate in Ancona in September

Ancona weather looks like this, on average, in September and the surrounding months.
AugustSeptemberOctober
Avg. temperature
+81°F+73°F+66°F
Min. temperature
+55°F+48°F+43°F
Max. temperature
+104°F+90°F+88°F
Rainfall
42 mm57 mm52 mm
Wind
2 m/s2 m/s1 m/s
Avg. water temperature
+78°F+75°F+68°F
Humidity
67%72%77%
Air pressure
1013 HPa1015 HPa1016 HPa
Sunny days
18149
Cloudy days
3510
Rainy days
579
Snowy days
000

September typically has worse weather conditions compared to August. It’s getting colder in September. From +81°F in the day, the average maximum temperature lowers to +73°F. 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

Wind speed in Ancona in September based on historical data.
Last Year
Historical Data

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

Amount of rainfall in mm during September in Ancona based on historical data.
Last Year
Historical Data
Typically, there is a 17% chance of rain on an average day in September, with total rainfall of approximately 70 mm. The maximum amount of rainfall per day is around 24 mm, which is considered light rain. On average, there are about 5 rainy days during September, so prepare to bring an umbrella.
Here’s how September is compared with other months in the amount of precipitation, total mm:
Ancona wettest month is November, where a typical day has a 37% chance of precipitation and 70 mm of rainfall per day. July, on the other hand, is the driest month with a mere 16% chance of precipitation and 29 mm of rainfall per day.

How was the weather last September in Ancona?

This is the weather in Ancona in September 2023:
1 September
☀️
+83°F
2 September
☀️
+83°F
3 September
☁️
+80°F
4 September
☀️
+77°F
5 September
☀️
+80°F
6 September
☀️
+84°F
7 September
☀️
+85°F
8 September
☀️
+82°F
9 September
☀️
+80°F
10 September
☀️
+83°F
11 September
☀️
+79°F
12 September
☁️
+87°F
13 September
☁️
+82°F
14 September
☁️
+83°F
15 September
🌧️
+73°F
16 September
☁️
+78°F
17 September
☁️
+83°F
18 September
☁️
+88°F
19 September
☁️
+89°F
20 September
☁️
+81°F
21 September
☁️
+81°F
22 September
☁️
+89°F
23 September
🌧️
+78°F
24 September
🌧️
+67°F
25 September
☁️
+71°F
26 September
☀️
+79°F
27 September
☀️
+80°F
28 September
☀️
+76°F
29 September
☀️
+74°F
30 September
☀️
+74°F
In September 2023 Ancona had 15 sunny days, 12 cloudy days, and 3 rainy days. The average maximum temperature was +81°F, with an absolute maximum of +90°F and a minimum of +66°F. The average humidity was 71%, with a maximum of 100% and a minimum of 42%. The average wind speed was 2 m/s, with a maximum of 8 m/s and a minimum of 0 m/s.
Are you planning a trip in September?

Climate Change Over the Years

This is how Ancona climate has changed over the last 43 years.

The climate in Ancona in September has not changed that much over the last 43 years.

The average temperature was the lowest in 1980 (+61°F) and the highest in 2022 (+69°F). The driest year was 1983 with only 355 mm of rainfall, and the wettest year was 2023 with 1248 mm.

FAQ

Frequently asked questions about the weather in Ancona in September:

Is September a good time to visit Ancona?

September is a really good time to go to Ancona. The weather is nice so plan your packing around outdoor activities and exploring. Check out other good time to visit Ancona.

Can you sunbathe in Ancona in September?

September is warm in Ancona. You may enjoy some beach or pool time in the day, but pack something a tad warmer for the evening.

Can you swim in Ancona in September?

Yes, the water temperature in Ancona in September is considered moderate and enjoyable for most people, averaging around +75°F.

Is Ancona rainy in September?

Ancona is often rainy in September. You may get a bit damp when outside, so pack an umbrella, and maybe even a raincoat.

Is it sunny in Ancona in September?

The amount of sunny days in Ancona during September varies; prepare for a mix of clouds and sun.

Other cities in Italy

Check out the weather for 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.