Portmarnock Weather in March

In Portmarnock, March brings low daytime temperatures around 11°C (52°F), with nights cooling to 5°C (41°F). It is the driest month of the year, with minimal rainfall.

Rainfall in Portmarnock in March

Expect the least amount of rain this month, making it a good opportunity for outdoor activities, even though days are on the cooler side. Analyzing past climate data, one can expect approximately 16 days of rain, averaging 64 mm (2.5 in). With rain spread across many days but low totals, showers are typically short and light rather than heavy.

Temperature in Portmarnock in March

In March, Portmarnock gets low temperatures, with highs of 11°C (52°F). Nights cool to around 5°C (41°F). The days stay cool from start to finish. Layering up well will make outdoor time much more comfortable. At 5°C (41°F) overnight, it gets properly cold after dark. On the bright side, cold nights tend to make for excellent sleeping conditions.

Sunshine in Portmarnock in March

With about 110 hours of sunshine, the area enjoys a nice balance of sun and overcast, creating a pleasant environment.

Wind Speed in Portmarnock in March

Wind speeds average 6 m/s (12 knots) during March. At this speed, expect strong winds that make large branches move and create some resistance when walking. Since this is an average, some days have fresh winds while others have strong breezes that can make umbrellas tricky to control.

Average water temperature in March

The water temperature is only 8°C (46°F) this month — cold enough that most people will want to stay out. Hardy swimmers may manage a quick dip, but it won't be comfortable.

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.

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.

Portmarnock Temperature in March

Min Temperature 5°C (41°F)  

Max Temperature 11°C (52°F)  

Water Temperature 8°C (46°F) *  

Chance of Rain 53%  

Precipitation 64 mm (2.5 in)  

Rainy days 16 days  

Humidity 71% *  

Windspeed 6 m/s (12 knots) *  

Sunshine 110 hours *  

Percentage Sunshine 30% *  

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

What to Wear in Portmarnock in March

The weather can be unpredictable in March, so pack clothes you can easily mix and match. You could bring jeans, other long pants, and a few t-shirts. A light jacket or light sweater will be pleasant for the cooler moments. Rain is likely on several days, so bring a good rain jacket. With water temperatures around 8°C (46°F), the water is quite cold for swimming. You can skip the swimwear unless you're particularly tough. Bring sunglasses since you'll have some sunny periods throughout the month

What To Do in Portmarnock in March

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.