Portmarnock Weather in July

Portmarnock in July sees pleasant temperatures, with highs around 19°C (66°F) and overnight lows of 13°C (55°F). Rainfall is fairly high at around 79 mm (3.1 in) on average, so pack waterproofs just in case.

Rainfall in Portmarnock in July

Typically, you can expect about 14 days of rain this month, with 79 mm (3.1 in) on average. A fairly balanced picture this month, some wet days but nothing too extreme in terms of intensity.

Temperature in Portmarnock in July

Daytime temperatures in Portmarnock reach 19°C (66°F) in July, dropping to 13°C (55°F) at night. July marks the summer season. Even when the weather is stable, mornings and evenings can still feel distinctly cool. With overnight lows of 13°C (55°F), evenings can feel noticeably cooler than the daytime. An extra layer is a good idea, though the cool air makes for a good night's sleep. On average, it is the month with the highest temperature of the year.

Sunshine in Portmarnock in July

You can expect a moderate amount of sunlight, with approximately 166 hours. This means a pleasant mix of sun and overcast.

Wind Speed in Portmarnock in July

In July, average wind speeds reach 4 m/s (8 knots), leading to light to moderate breezes. Conditions vary from day to day, with both calm and windier periods.

Average water temperature in July

At 14°C (57°F), the water is cool but manageable for those who don't mind a bit of a shock getting in. Most people adjust after a few minutes.

If your ideal day consists of dry skies and pleasant temperatures, July and August typically offer the best circumstances for Portmarnock.