Dun Laoghaire Weather in October

October in Dun Laoghaire brings moderate temperatures around 14°C (57°F) during the day, dropping to 9°C (48°F) at night, with quite a bit of rainfall expected, averaging around 90 mm (3.5 in) for the month.

Rainfall in Dun Laoghaire in October

You can expect rain on around 17 days based on historical patterns, with 90 mm (3.5 in) average for the month. Rain this month is fairly typical, a standard mix of wet and dry days with no particularly heavy or persistent showers.

Temperature in Dun Laoghaire in October

Expect highs of 14°C (57°F) in Dun Laoghaire in October, with nights dropping to around 9°C (48°F). This creates a mild day-to-night pattern that is generally easy to manage with the right clothing. At 9°C (48°F) overnight, it gets properly cold after dark. On the bright side, cold nights tend to make for excellent sleeping conditions.

Sunshine in Dun Laoghaire in October

The month has fewer sunny days, with around 97 hours of sunshine.

Wind Speed in Dun Laoghaire in October

October has wind speeds averaging 5 m/s (10 knots). You can expect gentle to moderate winds that move small trees and make flags wave steadily on typical days. Conditions typically range from light breezes to moderate winds.

Average water temperature in October

With water at 14°C (57°F), it's on the cooler side. Keen swimmers won't be put off, but those who prefer warm water may find it less enjoyable.

For Dun Laoghaire itself, July and August generally stand out with the best circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.