January weather forecast
Cork, Ireland

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Ancient buildings in Cork, Ireland, with dark cloudy skies and mountains in the distance
Ancient buildings in Cork, Ireland, with dark cloudy skies and mountains in the distance

Weather in January

January in Cork, Ireland, can expect a chill as winter holds its grip. Surprisingly, it is the month with the highest rainfall recorded, with 120mm (4.72") of precipitation spread over 21 days. As Ireland is known for its mild winters, snowfall is infrequent during this month. The daylight hours are few, but travelers can still experience the charm of the city under the soft glow of the winter sun. Despite the moisture and cold, the local landscapes offer a unique, tranquil beauty during the winter months.

Temperature

January and February in Cork, Ireland, are characterised by lowest temperatures, with an average high of 8°C (46.4°F).

Rainfall

In January, in Cork, the rain falls for 21 days. Throughout January, 118mm (4.65") of precipitation is accumulated. In Cork, Ireland, during the entire year, the rain falls for 210 days and collects up to 1063mm (41.85") of precipitation.

Sea temperature

In January, the average sea temperature in Cork is 9.8°C (49.6°F).
Note: At temperatures below 10°C (50°F), swimming in a suitably protected swimsuit is feasible; otherwise, cold shock and loss of breathing control are imminent. Even a short swim, without thermal protection, at temperatures around 13°C (55.4°F) is not comfortable.

Daylight

In January, the average length of the day is 8h and 23min.
On the first day of the month, sunrise is at 8:41 am and sunset at 4:33 pm. On the last day of January, in Cork, Ireland, sunrise is at 8:15 am and sunset at 5:19 pm GMT.

Sunshine

January, February, November and December, with an average of 2h of sunshine, are months with the least sunshine.

UV index

In Cork, the average daily maximum UV index in January is 1. A UV Index estimate of 2, and below, represents a low threat to health from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: A daily high UV index of 1 in January leads to these guidelines:
Protection from prolonged sun exposure is necessary for babies, children, and individuals with sensitive skin. To guard against the harmful effects of the Sun, minimize exposure during midday. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck.

Frequently asked questions

What month is the coldest in Cork?

During January and February, Cork experiences its lowest temperatures, averaging a high-temperature of 8°C (46.4°F).

What are the temperatures in Cork in January?

January temperatures in Cork, Ireland, vary between a high-temperature of 8°C (46.4°F) and a low-temperature of 3°C (37.4°F).

How many days does it rain in January in Cork?

In Cork, in January, during 21 rainfall days, 118mm (4.65") of precipitation is typically accumulated.

How cold is the water in January in Cork?

In Cork, Ireland, in January, the average water temperature is 9.8°C (49.6°F). At temperatures below 10°C (50°F), swimming in a suitably protected swimsuit is feasible; otherwise, cold shock and loss of breathing control are imminent. Even a short swim, without thermal protection, at temperatures around 13°C (55.4°F) is not comfortable.

How many hours of daylight does Cork have in January?

In January, the average day length in Cork is 8h and 23min.

When are sunrise and sunset in January in Cork?

On the first day of January in Cork, Ireland, sunrise is at 8:41 am and sunset at 4:33 pm. On the last day of the month, sunrise is at 8:15 am and sunset at 5:19 pm GMT.

What are the months with the least sunshine in Cork?

January, February, November and December, with an average of 2h of sunshine, are months with the least sunshine in Cork.

How many hours of sunshine does Cork have in January?

The average sunshine duration in January is 2h.

What is the UV index reading in January in Cork?

The average daily maximum UV index in January in Cork, Ireland, is 1. A UV Index estimate of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV radiation.
Average high temperature
Average rainfall days
Average daylight
Average sunshine
Average UV index

Average temperature in January
Cork, Ireland

Average temperature in January - Cork, Ireland
  • Average high temperature in January: 8°C

The warmest month (with the highest average high temperature) is July (19°C).
The months with the lowest average high temperature are January and February (8°C).

  • Average low temperature in January: 3°C

The months with the highest average low temperature are July and August (11°C).
The coldest months (with the lowest average low temperature) are January and February (3°C).

Average rainfall in January
Cork, Ireland

Average rainfall in January - Cork, Ireland
  • Average rainfall in January: 118mm

The wettest month (with the highest rainfall) is December (120mm).
The driest months (with the least rainfall) are April and June (61mm).

Average rainfall days in January
Cork, Ireland

Average rainfall days in January - Cork, Ireland
  • Average rainfall days in January: 21 days

The month with the highest number of rainy days is January (21 days).
The month with the least rainy days is July (14 days).

Average sea temperature in January
Cork, Ireland

Average sea temperature in January - Cork, Ireland
  • Average sea temperature in January: 9.8°C

The best month for swimming (with the highest average sea temperature) is August (16.4°C).
The coldest month (with the lowest average sea temperature) is March (9.4°C).

Average daylight in January /
Average sunshine in January
Cork, Ireland

Average daylight in January / Average sunshine in January - Cork, Ireland
  • Average daylight in January: 8h and 2min

The month with the longest days is June (Average daylight: 16h and 36min).
The month with the shortest days is December (Average daylight: 7h and 54min).

  • Average sunshine in January: 2h

The months with the most sunshine are May and June (Average sunshine: 6h).
The months with the least sunshine are January, February, November and December (Average sunshine: 2h).

Average UV index in January
Cork, Ireland

Average UV index in January - Cork, Ireland
  • Average UV index in January: 1

The months with the highest UV index are June and July (UV index 6).
The month with the lowest UV index is December (UV index 0).

Cork, Ireland

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