Comiso, Italy — Weather in September 2026

Monthly climate averages for Comiso, Italy. Based on 10-year ERA5 reanalysis data.

Csa Hot-Summer Mediterranean
10 /10
Excellent

September is an excellent month in Comiso

Climate Overview

Comiso, Italy in September has warm conditions, with highs averaging 26.5°C (80°F). Sea temperature reaches 26.2°C (79°F).

This month falls at the beginning of Autumn.

Daily highs in September gradually drop from around 28°C (82°F) at the start to 24°C (76°F) by month's end.

Rainfall is heaviest during the last third of the month, while the middle tends to be drier.

Expect around 11.6h of sunshine at the start of September, decreasing to 10.1h by the end.

The warmest days tend to fall around the 2th, averaging 28.1°C (83°F).

Compared to August, this month is about 3°C cooler with 3 more rainy days. Temperatures begin dropping heading into October.

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Monthly September Averages

Temperature
27°C / 21°C
Feels Like
28°C / 23°C
Rain
6 days · 28 mm
Sunshine
10.9h / day
Humidity
75% — Humid
Wind
17 km/h
Wind Direction
WSW (249°)
Gusts
32 km/h
Daylight
12.4 h
Cloud Cover
34%
Clear Sky Days
10.3
UV Index
6.7 — High
Sea Temperature
26°C
Dew Point
19°C — Humid
Moon Phase
Waxing Crescent · 11%

Climate Charts

Daily averages based on historical data (2016–2025)

Daily Temperature

36°C 32°C 28°C 24°C 20°C 16°C 12°C 151015202530
HighLow

Daily Precipitation

0 mm 1 mm 2 mm 3 mm 4 mm 151015202530
Rainfall

Daily Sunshine

0h 3h 6h 9h 12h 151015202530
Sunshine

Daily Wind Speed

0 5 10 15 20 25 151015202530
Wind Speed
Sun Position
Sunrise 06:45
Daylight 12.5h
Sunset 19:12

What to Expect

Daytime temperatures around 27°C (80°F) are ideal for full-day outdoor exploration.

Rain usually comes in shorter passing showers rather than all-day rain.

1 of the last 5 yearly records were warmer than this month's long-run average.

Compare Months

January
Fair
Temp
14°C / 9°C
Feels Like
11°C / 6°C
Rain
7days (49 mm) Good
Sun
8.2h Good
Humidity
78% Humid
UV
3.2 Moderate
View Details
February
Good
Temp
15°C / 9°C
Feels Like
12°C / 6°C
Rain
6days (56 mm) Good
Sun
9h Good
Humidity
78% Humid
UV
4.1 Moderate
View Details
March
Good
Temp
16°C / 10°C
Feels Like
14°C / 8°C
Rain
8days (44 mm) Wet
Sun
10.2h Excellent
Humidity
77% Humid
UV
5.7 High
View Details
April
Good
Temp
18°C / 12°C
Feels Like
18°C / 10°C
Rain
5days (21 mm) Good
Sun
11.2h Excellent
Humidity
73% Muggy
UV
7 High
View Details
May best
Excellent
Temp
22°C / 15°C
Feels Like
23°C / 15°C
Rain
5days (31 mm) Good
Sun
12.2h Excellent
Humidity
71% Muggy
UV
7.7 Very High
View Details
June best
Excellent
Temp
27°C / 20°C
Feels Like
30°C / 21°C
Rain
2days (14 mm) Excellent
Sun
13.3h Excellent
Humidity
64% Muggy
UV
8.3 Very High
View Details
July
Excellent
Temp
30°C / 23°C
Feels Like
33°C / 24°C
Rain
0days (2 mm) Excellent
Sun
13.4h Excellent
Humidity
62% Muggy
UV
8.5 Very High
View Details
August
Good
Temp
30°C / 23°C
Feels Like
33°C / 26°C
Rain
3days (12 mm) Excellent
Sun
12.2h Excellent
Humidity
68% Muggy
UV
8 Very High
View Details
September best
Excellent
Temp
27°C / 21°C
Feels Like
28°C / 23°C
Rain
6days (28 mm) Good
Sun
10.9h Excellent
Humidity
75% Muggy
UV
6.7 High
View Details
October best
Excellent
Temp
23°C / 17°C
Feels Like
23°C / 18°C
Rain
7days (61 mm) Good
Sun
9.3h Good
Humidity
78% Humid
UV
5.3 High
View Details
November
Good
Temp
19°C / 14°C
Feels Like
17°C / 13°C
Rain
10days (89 mm) Wet
Sun
7.9h Good
Humidity
80% Humid
UV
3.7 Moderate
View Details
December
Good
Temp
15°C / 11°C
Feels Like
13°C / 8°C
Rain
7days (43 mm) Good
Sun
7.6h Good
Humidity
79% Humid
UV
3 Moderate
View Details
Month Temp Feels Like Rain Sun Humidity UV Status
January 14°C / 9°C 11°C / 6°C 7days (49 mm) Good 8.2h Good 78% Humid 3.2 Moderate Fair View Details
February 15°C / 9°C 12°C / 6°C 6days (56 mm) Good 9h Good 78% Humid 4.1 Moderate Good View Details
March 16°C / 10°C 14°C / 8°C 8days (44 mm) Wet 10.2h Excellent 77% Humid 5.7 High Good View Details
April 18°C / 12°C 18°C / 10°C 5days (21 mm) Good 11.2h Excellent 73% Muggy 7 High Good View Details
May best 22°C / 15°C 23°C / 15°C 5days (31 mm) Good 12.2h Excellent 71% Muggy 7.7 Very High Excellent View Details
June best 27°C / 20°C 30°C / 21°C 2days (14 mm) Excellent 13.3h Excellent 64% Muggy 8.3 Very High Excellent View Details
July 30°C / 23°C 33°C / 24°C 0days (2 mm) Excellent 13.4h Excellent 62% Muggy 8.5 Very High Excellent View Details
August 30°C / 23°C 33°C / 26°C 3days (12 mm) Excellent 12.2h Excellent 68% Muggy 8 Very High Good View Details
September best 27°C / 21°C 28°C / 23°C 6days (28 mm) Good 10.9h Excellent 75% Muggy 6.7 High Excellent View Details
October best 23°C / 17°C 23°C / 18°C 7days (61 mm) Good 9.3h Good 78% Humid 5.3 High Excellent View Details
November 19°C / 14°C 17°C / 13°C 10days (89 mm) Wet 7.9h Good 80% Humid 3.7 Moderate Good View Details
December 15°C / 11°C 13°C / 8°C 7days (43 mm) Good 7.6h Good 79% Humid 3 Moderate Good View Details

What to Wear

Summer clothing like shorts, t-shirts, and sundresses will be comfortable. Bring a light cardigan for air-conditioned spaces.

A waterproof jacket or compact umbrella is recommended for occasional showers.

Packing List

UmbrellaBreathable clothingSunscreen (SPF 30+)Sun hatSunglassesComfortable walking shoes

Frequently Asked Questions

September is typically excellent for visiting Comiso, with average highs of 27°C (80°F) and around 6 rainy days. Comiso, Italy in September has warm conditions, with highs averaging 26.5°C (80°F). Sea temperature reaches 26°C (79°F
Comiso typically sees around 6 rainy days in September with 28 mm (1.1 in) of total rainfall. An umbrella should suffice.
Nights stay pleasantly warm in Comiso during September, around 21°C (69°F). Light evening wear is sufficient.
With highs of 27°C (80°F) and lows of 21°C (69°F) in September, we recommend: Umbrella, Breathable clothing, Sunscreen (SPF 30+), Sun hat, Sunglasses. Comfortable walking shoes are essential.
Yes, September offers some of the best weather conditions in Comiso with comfortable temperatures and lower chances of rain.
The average UV index in Comiso during September is 7 (high). Wear sunscreen SPF 30+, a hat, and sunglasses. Limit direct sun exposure between 10 AM and 4 PM.
Comiso gets approximately 12 hours of daylight per day in September, with around 11 hours of sunshine.
Snow is uncommon in Comiso during September based on 10-year climate averages.

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