March weather forecast
Arklow, Ireland

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Weather in March

As spring emerges in March, Arklow residents experience an increase in daylight hours to 11.9 hours and a sea temperature of 8.5°C (47.3°F). The rise in hours of sunlight signals a slow return to outdoor activities despite sea temperatures that continue to linger in the chilly range. Changes in weather patterns become more evident as the season transitions, making March a variable month in terms of weather consistency.

Sea temperature

The month with the coldest seawater is March, with an average sea temperature of 8.5°C (47.3°F).
Note: Beware of 8.5°C (47.3°F) waters at 13°C (55.4°F), they're uninviting, and a dip below 10°C (50°F) has risks of breath loss and cold shock, contingent on health.

Daylight

The average length of the day in March is 11h and 54min.
On the first day of March, sunrise is at 7:09 am and sunset at 6:03 pm. On the last day of the month, sunrise is at 5:59 am and sunset at 6:57 pm GMT.

Frequently asked questions

What is the month with the coldest sea water?

March is the month with the coldest seawater, with an average sea temperature of 8.5°C (47.3°F).

How cold is the water in March?

In Arklow, the average seawater temperature in March is 8.5°C (47.3°F). Swimming in 8.5°C (47.3°F) is considered dangerous. Unprotected immersion in temperatures below 10°C (50°F) causes quickly maximum intensity cold shock with hyperventilation.

What is the average length of the day in March?

In March, the average day length is 11h and 54min.

What time are sunrise and sunset in March?

On the first day of March, sunrise is at 7:09 am and sunset at 6:03 pm. On the last day of the month, sunrise is at 5:59 am and sunset at 6:57 pm GMT.

Average sea temperature in March
Arklow, Ireland

Average sea temperature in March - Arklow, Ireland
  • Average sea temperature in March: 8.5°C

The best month for swimming (with the highest average sea temperature) is September (15.3°C).
The coldest month (with the lowest average sea temperature) is March (8.5°C).

Average daylight in March
Arklow, Ireland

Average daylight in March - Arklow, Ireland
  • Average daylight in March: 11h and 5min

The month with the longest days is June (Average daylight: 16h and 48min).
The month with the shortest days is December (Average daylight: 7h and 42min).

Arklow, Ireland

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