January weather forecast
Rathgar, Ireland

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Weather in January

January, the same as December, in Rathgar, Ireland, is another chilly winter month, with an average temperature varying between 7.8°C (46°F) and 4.5°C (40.1°F).

Temperature

In Rathgar, the coldest period comes during January and February, when the average high-temperature touches 7.8°C (46°F).

Humidity

The average relative humidity in January is 84%.

Rainfall

In Rathgar, during January, the rain falls for 16.6 days and regularly aggregates up to 41mm (1.61") of precipitation. Throughout the year, there are 200.5 rainfall days, and 530mm (20.87") of precipitation is accumulated.

Snowfall

Months with snowfall are January through March, November and December. In January, in Rathgar, it is snowing for 1.3 days. Throughout January, 5mm (0.2") of snow is accumulated. Throughout the year, in Rathgar, there are 4.6 snowfall days, and 24mm (0.94") of snow is accumulated.

Daylight

The average length of the day in January in Rathgar is 8h and 11min.
On the first day of January, sunrise is at 8:40 am and sunset at 4:16 pm. On the last day of the month, sunrise is at 8:11 am and sunset at 5:05 pm GMT.

Sunshine

In Rathgar, the average sunshine in January is 4.4h.

UV index

January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Rathgar. A UV Index reading of 2, and below, represents a low threat to health from exposure to the Sun's UV rays for the average person.
Note: In January, the maximum UV index of 2 transforms into these recommendations:
It is important to always shield children, babies, and individuals with sensitive skin from prolonged exposure to the sun. Direct exposure to the Sun during its peak hours around mid-day should be minimized for safety. A hat with a broad brim is indispensable, filtering out up to half of UV rays. Remember to consider! The UV radiation from the Sun can be intensified nearly twice by the reflection of snow.
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Frequently asked questions

What part of the year is the coldest in Rathgar?

January and February, with an average high-temperature of 7.8°C (46°F), are marked as the coldest months in Rathgar, Ireland.

What is the temperature in January in Rathgar?

The high-temperature, in January, in Rathgar, records 7.8°C (46°F), while the low-temperature is 4.5°C (40.1°F).

What is the average humidity in January in Rathgar?

In Rathgar, Ireland, the average relative humidity in January is 84%.

How many days does it rain in January in Rathgar?

In Rathgar, during January, the rain falls for 16.6 days and regularly aggregates up to 41mm (1.61") of precipitation.

How much does it snow in Rathgar in January?

In Rathgar, in January, during 1.3 snowfall days, 5mm (0.2") of snow is typically accumulated.

What is the average length of the day in January in Rathgar?

The average day length in January in Rathgar is 8h and 11min.

When are sunrise and sunset in January in Rathgar?

In January, on the first day of the month, sunrise is at 8:40 am and sunset at 4:16 pm. On the last day of the month, in Rathgar, sunrise is at 8:11 am and sunset at 5:05 pm GMT.

How long on average sun shines in January in Rathgar?

In January, the average sunshine duration in Rathgar, Ireland, is 4.4h.

When is the lowest UV index in Rathgar?

January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index.

How high is the UV index in January in Rathgar?

The average daily maximum UV index in January in Rathgar, Ireland, is 2. A UV Index reading of 2, and below, represents a low health threat from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover

Average temperature in January
Rathgar, Ireland

Average temperature in January - Rathgar, Ireland
  • Average high temperature in January: 7.8°C

The warmest months (with the highest average high temperature) are July and August (16.9°C).
The months with the lowest average high temperature are January and February (7.8°C).

  • Average low temperature in January: 4.5°C

The month with the highest average low temperature is August (12.7°C).
The coldest month (with the lowest average low temperature) is February (4.4°C).

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Average pressure in January
Rathgar, Ireland

Average pressure in January - Rathgar, Ireland
  • Average pressure in January: 1011.6mbar

The month with the highest atmospheric pressure is May (1016mbar).
The month with the lowest atmospheric pressure is November (1008.3mbar).

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Average wind speed in January
Rathgar, Ireland

Average wind speed in January - Rathgar, Ireland
  • Average wind speed in January: 25.8km/h

The windiest month (with the highest average wind speed) is December (25.9km/h).
The calmest month (with the lowest average wind speed) is July (15.9km/h).

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Average humidity in January
Rathgar, Ireland

Average humidity in January - Rathgar, Ireland
  • Average humidity in January: 84%

The month with the highest relative humidity is July (86%).
The month with the lowest relative humidity is March (82%).

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Average rainfall in January
Rathgar, Ireland

Average rainfall in January - Rathgar, Ireland
  • Average rainfall in January: 41mm

The wettest month (with the highest rainfall) is November (71mm).
The driest month (with the least rainfall) is May (27mm).

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Average rainfall days in January
Rathgar, Ireland

Average rainfall days in January - Rathgar, Ireland
  • Average rainfall days in January: 16.6 days

The month with the highest number of rainy days is July (20.4 days).
The months with the least rainy days are March and September (14.9 days).

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Average snowfall in January
Rathgar, Ireland

Average snowfall in January - Rathgar, Ireland
  • Average snowfall in January: 5mm

The month with the highest snowfall is December (9mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).

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Average snowfall days in January
Rathgar, Ireland

Average snowfall days in January - Rathgar, Ireland
  • Average snowfall days in January: 1.3 days

The months with the highest number of snowfall days are January and February (1.3 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).

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

Average daylight in January / Average sunshine in January - Rathgar, Ireland
  • Average daylight in January: 8h and 1min

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

  • Average sunshine in January: 4h and 2min

The month with the most sunshine is May (Average sunshine: 8h and 0min).
The month with the least sunshine is November (Average sunshine: 4h and 18min).

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Average sunshine days in January
Rathgar, Ireland

Average sunshine days in January - Rathgar, Ireland
  • Average sunshine days in January: 10.9 days

The month with the most sunshine days is April (11.7 days).
The month with the least sunshine days is July (7.2 days).

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Average UV index in January
Rathgar, Ireland

Average UV index in January - Rathgar, Ireland
  • Average UV index in January: 2

The months with the highest UV index are May, June, July, August and September (UV index 4).
The months with the lowest UV index are January, February, November and December (UV index 2).

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Average cloud cover in January
Rathgar, Ireland

Average cloud cover in January - Rathgar, Ireland
  • Average cloud cover in January: 55

The months with the most cloud cover are February and November (Cloud cover 56).
The month with the least cloud cover is September (Cloud cover 48).

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Average visibility in January
Rathgar, Ireland

Average visibility in January - Rathgar, Ireland
  • Average visibility in January: 10km

The months with the highest visibility are January, March, October and November (10km).
The months with the lowest visibility are February, April, May, June, July, August, September and December (9km).

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Rathgar, Ireland

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