Weather in January
January in Arklow, Ireland commences the year with winter conditions, making it a cold month. The frigid air temperatures over the seas contribute to the coldest sea temperatures of the year at 9.7°C (49.5°F). While the days are shorter, stretching only to 8.3 hours of daylight, they often brim with crisp, clear skies. This month experiences more indoor activities due to the low sea temperatures and short daylight hours. The weather tends to be relatively stable, without any significant changes in the overall climatic conditions.
Note: If planning to swim in 9.7°C (49.5°F) under 10°C (50°F), wear a protective suit. Neglecting this advice might cause immediate cold shock and troubled breathing. A splash around 13°C (55.4°F) is not much warmer.
On the first day of January, sunrise is at 8:36 am and sunset at 4:19 pm. On the last day of the month, sunrise is at 8:09 am and sunset at 5:06 pm GMT.
Sea temperature
In Arklow, the average seawater temperature in January is 9.7°C (49.5°F).Note: If planning to swim in 9.7°C (49.5°F) under 10°C (50°F), wear a protective suit. Neglecting this advice might cause immediate cold shock and troubled breathing. A splash around 13°C (55.4°F) is not much warmer.
Daylight
In Arklow, the average length of the day in January is 8h and 16min.On the first day of January, sunrise is at 8:36 am and sunset at 4:19 pm. On the last day of the month, sunrise is at 8:09 am and sunset at 5:06 pm GMT.
Updated: Jun 14, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the water temperature in January?
In Arklow, in January, the average water temperature is 9.7°C (49.5°F). Swimming in 9.7°C (49.5°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 January in Arklow?
The average day length in January is 8h and 16min.
When are sunrise and sunset in January?
On the first day of January, sunrise is at 8:36 am and sunset at 4:19 pm. On the last day of the month, sunrise is at 8:09 am and sunset at 5:06 pm GMT.
Average sea temperature in January
Arklow, Ireland
- Average sea temperature in January: 9.7°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 January
Arklow, Ireland
- Average daylight in January: 8h and 2min
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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