Measurements:
°C
°F
Cork
46°F
NW 26 mph
Feels like: 38°F
Precip: 100%
World Resorts Ireland Cork Weather September Weather in Cork

Cork Weather: September

Average Day Temperature: 63.0°F
Average Night Temperature: 52.3°F
Sea Water Temperature: 60.7°F
Number of Sunny Days: 4 days
Sunshine Hours: 11.7 - 13.6 hours
Number of Rainy Days: 5 days
Precipitation Totals: 2.8 in

Air Temperature in September, °F

Select Year: 2025 2024 2023

The highest day temperature in September 2025 was 66°F. The lowest night temperature was 38°F. The average values for day and night temperatures during September were 61.4°F и 50.7°F respectivly.

Cork Water Sea Temperature in September, °F

Select Year: 2025 2024 2023

The average sea surface temperature in September 2025 for Cork was 61.3°F. The maximum and minimum values were 59.2°F and 64.2°F respectively.

Sunny, Cloudy and Gloomy days

Most of the days in September are gloomy but you can also expect sunny days.

Precipitation Totals in September, in

Precipitation total in September for Cork is 2.8 in. It makes september one of the least rainy months of the year.

Wind Speed in September, mph

The average wind speed in September is 10.2 mph. It makes September one of the most windless months of the year for Cork.

Average Sunny Hours Per Day

We are using day length and cloud cover information for each day of the month to calculate averages for this chart. Average sunny hours for Cork in September is 5.5 hours.

Best Time to Visit Cork
The most sunny months:
August 6 days
April 6 days
March 5 days
The most warm months:
July 67.4 °F
August 66.8 °F
June 63.9 °F
Warmest sea temperature:
August 61.6 °F
July 61.5 °F
September 60.7 °F
The most cold months:
January 46.3 °F
February 47.8 °F
December 48.2 °F
The most rainy months:
December 7 days
February 6 days
October 6 days
The most windy months:
February 14 mph
December 14 mph
January 12 mph

Cork on the Weather Map

Ireland Resorts:
NAME
Cork +46
Dublin +44
Killarney +48
Limerick +44
24 Hours Weather Forecast
Cork
Local time: 09:50
05 dec, friday
1200 52°F
NE
17 mph
1500 50°F
NE
20 mph
1800 48°F
NE
22 mph
2100 48°F
NE
16 mph
06 dec, saturday
0000 46°F
NE
15 mph
0300 48°F
E
19 mph
0600 50°F
E
21 mph
0900 48°F
E
18 mph