Portmarnock Weather in April

Portmarnock in April sees moderate daytime temperatures of 12°C (54°F) and nighttime lows of 6°C (43°F). Rainfall is fairly high this month at around 68 mm (2.7 in), so pack a rain jacket to stay dry.

Rainfall in Portmarnock in April

You can expect rain on roughly 15 days based on historical data, averaging 68 mm (2.7 in) for the month. Neither particularly heavy nor particularly frequent, the rain this month is about average. A light jacket should be enough on most wet days.

Temperature in Portmarnock in April

In April, Portmarnock sees moderate temperatures, with highs of 12°C (54°F). Nights drop to around 6°C (43°F). Even when the weather is stable, mornings and evenings can still feel distinctly cool. With overnight lows of 6°C (43°F), nights are cold. The cold air does make for deep, comfortable sleep if you have enough blankets.

Sunshine in Portmarnock in April

You can expect a moderate amount of sunlight, with approximately 157 hours. This means a pleasant mix of sun and overcast.

Wind Speed in Portmarnock in April

Wind speeds average 5 m/s (10 knots) during April. At this speed, gentle to moderate breezes make small trees sway and the wind creates whitecaps on water bodies. Daily variations range from moderate winds to stronger breezes, creating excellent conditions for sailing, kite flying and wind sports.

Average water temperature in April

At 9°C (48°F), the water is very cold. Most people find it too uncomfortable for anything beyond a brief wade.

Should you favor a climate that's both dry and comfortably warm, July and August typically offer the most agreeable circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.

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• January
• February
• March
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• May
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For a detailed overview over the year and the best time to visit Ireland, check out our Portmarnock's climate page.

Portmarnock Temperature in April

Min Temperature 6°C (43°F)  

Max Temperature 12°C (54°F)  

Water Temperature 9°C (48°F) *  

Chance of Rain 48%  

Precipitation 68 mm (2.7 in)  

Rainy days 15 days  

Humidity 68% *  

Windspeed 5 m/s (10 knots) *  

Sunshine 157 hours *  

Percentage Sunshine 40% *  

* Data from: Dublin, Ireland (7 KM, 4 Miles).

What to Wear in Portmarnock in April

The weather can swing between comfortable and chilly in April, so flexibility is key. Pack a variety of tops, at least one warm layer, and both shorts and long pants. This gives you options no matter what the day brings. Wet weather is likely, so pack waterproof gear for multiple rainy days. With water temperatures around 9°C (48°F), the water is quite cold for swimming. You can skip the swimwear unless you're particularly tough. It won't hurt to bring your sunglasses along, as you'll see some sunny periods.

What To Do in Portmarnock in April

We rated the following activities from 1 (least suitable) to 10 (best) to do.

Swimming

5/10

Cycling

6/10

Walking

6/10

Camping

4/10

Outdoor sports

6/10

Select a Month

Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit Ireland, check out our Portmarnock's climate page.

More climate data for Portmarnock

Temperature Rainfall Sunshine Humidity Wind Speed Water Temp

See the full Portmarnock climate overview or explore weather in Ireland.