September weather forecast
Cork, Ireland

September marks the onset of autumn in Cork, but summer's warmth lingers, making it a pleasant time to visit. The decrease in daylight hours from August to September by approximately 2 hours hints at the transition to shorter autumn days. Despite the change of season, the weather remains relatively warm, perfect for enjoying the autumn landscapes and colors. The sea temperature sees a slight drop but remains within a range comfortable for seafaring activities. Explore the glowing autumn foliage on the city streets and the surrounding countryside during this serene transition period.

Temperature

September's advent in Cork presents an average high-temperature of a still comfortable 16°C (60.8°F), indicating a slight variation from the conditions of the previous month. During September, Cork records a consistent average nighttime temperature of 10°C (50°F).

Rainfall

In Cork, in September, it is raining for 17 days, with typically 96mm (3.78") of accumulated precipitation. In Cork, Ireland, during the entire year, the rain falls for 210 days and collects up to 1063mm (41.85") of precipitation.

Sea temperature

In September, the average sea temperature in Cork is 15.7°C (60.3°F).
Note: Most people find swimming in 15.7°C (60.3°F) unenjoyable. As the water temperature falls from 21°C (69.8°F) to 15°C (59°F), controlling one's breathing becomes harder.

Daylight

In September, the average length of the day in Cork, Ireland, is 12h and 39min.
On the first day of September, sunrise is at 6:46 am and sunset at 8:20 pm. On the last day of the month, sunrise is at 7:34 am and sunset at 7:13 pm IST.

Sunshine

In Cork, Ireland, the average sunshine in September is 4h.

UV index

In September, the average daily maximum UV index in Cork is 4. A UV Index estimate of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV rays for ordinary individuals.
Note: The maximum UV index, 4 during September, leads to the following recommendations:
Exercise prevention - Warding off sunburn is urged. The Sun's harshest UV rays are around midday; it's wise to seek shade and limit time outdoors. Boost your sun resistance with garments that are densely woven yet spacious.