Rathgar Weather in January

January in Rathgar averages 9°C (48°F) during the day and 3°C (37°F) at night. Quite a bit of rainfall is typical this month, with around 73 mm (2.9 in) on average. An umbrella is a good idea.

Rainfall in Rathgar in January

Climate statistics over the past 30 years suggest around 18 days of rain, with 73 mm (2.9 in) average for the month. With rain spread across many days but low totals, showers are typically short and light rather than heavy.

Temperature in Rathgar in January

Temperatures in Rathgar in January top out at 9°C (48°F) and drop to 3°C (37°F) overnight. January is part of the winter season. Temperatures remain on the cold side all day. A proper warm jacket is worth having, not just for evenings. At 3°C (37°F) overnight, it gets properly cold after dark. On the bright side, cold nights tend to make for excellent sleeping conditions. January often features the most temperate temperatures compared to other months.

Sunshine in Rathgar in January

The month has fewer sunny days, with around 56 hours of sunshine.

Wind Speed in Rathgar in January

January sees wind speeds averaging 6 m/s (12 knots). You'll experience strong winds that cause whole trees to sway and require effort when walking against them. As an average, expect variation from moderate breezes to particularly windy days that affect daily routines.

Average water temperature in January

At 10°C (50°F), the water is very cold. Most people find it too uncomfortable for anything beyond a brief wade.

January in Rathgar can still be great, but if you prefer pleasant temperatures along with dry and sunny conditions, our weather planner can help you explore other options in the world.

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• January
• February
• March
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• May
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• August

• September
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• November
• December

For a detailed overview over the year and the best time to visit Ireland, check out our Rathgar's climate page.

Rathgar Temperature in January

Min Temperature 3°C (37°F)  

Max Temperature 9°C (48°F)  

Water Temperature 10°C (50°F) *  

Chance of Rain 61%  

Precipitation 73 mm (2.9 in)  

Rainy days 18 days  

Humidity 81% *  

Windspeed 6 m/s (12 knots) *  

Sunshine 56 hours *  

Percentage Sunshine 25% *  

* Data from: Dublin, Ireland (13 KM, 8 Miles).

What to Wear in Rathgar in January

Dress warmly and in layers for your trip to Rathgar in January. A good base layer system works wonders. Start with good thermal underwear, add something warm like a fleece sweater, then finish with a waterproof jacket on top. Wet weather is likely, so pack waterproof gear for multiple rainy days. The water temperature sits at about 10°C (50°F), which is too chilly for most people to enjoy swimming. Leave the swimsuit at home unless you love cold water. You can probably leave your sunglasses at home, because sunny days are pretty rare this month.

What To Do in Rathgar in January

We rated the following activities from 1 (least suitable) to 10 (best) to do.

Swimming

4/10

Cycling

4/10

Walking

4/10

Camping

4/10

Outdoor sports

4/10

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 Rathgar's climate page.

More climate data for Rathgar

Temperature Rainfall Sunshine Humidity Wind Speed Water Temp

See the full Rathgar climate overview or explore weather in Ireland.