If you’re planning a trip to Dublin at Christmas, you’ll need to prepare for cool, damp, and often windy weather. Daytime highs usually sit around 8–10°C (46–50°F), and nighttime lows hover near 3–4°C (37–39°F). Rain happens frequently and snow almost never settles in the city itself. Most of the time, conditions stay manageable, but the short days and unsettled skies really shape the city’s holiday vibe.
Daylight is pretty limited, with the sun rising after 8 a.m. and setting before 4:30 p.m. The festive lights and Christmas markets pop even more against the early darkness, so the city feels cozy despite the chill.
Rain showers come and go, so you’ll want waterproof layers and sturdy shoes if you’re out exploring.
The brisk air, slick streets, and lively holiday events give Dublin its own kind of winter magic. Once you know what the weather’s like, you can plan your days with a bit more confidence and soak up that seasonal charm.
Overview of December Weather in Dublin
December in Dublin means short days, damp air, and cool temperatures. You’ll run into rain showers often, mild but chilly conditions, and not much daylight.
Weather patterns jump around a bit each year, and Dublin’s climate isn’t quite the same as other big Irish cities.
Typical Climate Conditions
December is winter in Dublin, so expect cool and often damp weather. Daytime highs usually land around 8–10°C (46–50°F), while nighttime lows drop to about 3–4°C (37–39°F).
You might see frost, but it doesn’t show up much in the city center.
Rain falls often, with about 20–22 wet days in the month. Total rainfall usually comes in at 70–80 mm, but this can swing up or down depending on the year.
Showers tend to stay light or moderate, and that persistent drizzle is just part of the deal.
Sunlight is in short supply, with the sun rising after 8 a.m. and setting before 4:30 p.m. You get about 7.5 hours of daylight at the shortest point.
Clouds hang around most days, so you won’t see much bright sunshine.
Snow doesn’t really stick in Dublin, though you might spot a dusting up in the Dublin or Wicklow Mountains.
Seasonal Patterns and Variability
While December averages don’t move much, the weather can still surprise you. Some years, you’ll get mild, damp stretches with highs close to 10°C, while other years bring colder spells near freezing.
Rainfall totals swing too. Some years, Dublin gets over 80 mm; in drier years, it drops below 50 mm. The number of rainy days stays high, but you might notice the difference between drizzle and heavier showers.
Storms coming in from the Atlantic can bring strong winds, especially along the coast. In December, wind speeds usually run higher than in autumn or spring, which makes the air feel colder than the numbers say.
Fog sometimes forms on calm nights, mostly outside the city center. It’s not an everyday thing, but it can slow travel when it shows up.
How Dublin Compares to Other Irish Cities
Compared to other Irish cities, Dublin is a bit cooler and drier in December. For example, Cork and Kerry often see more rain, sometimes over 90 mm, while Dublin averages closer to 70 mm.
Temperatures run a little lower in Dublin. Cities like Galway on the west coast stay milder thanks to the Atlantic, with highs around 9°C, while Dublin hangs closer to 8°C.
Snow shows up more in inland or upland spots than in Dublin, since the Irish Sea helps keep things milder. Still, Dublin’s heavy cloud cover and shorter days make it feel colder than counties down south.
The west coast gets more wind, so while Dublin can get breezy, it’s usually less wild than Atlantic-facing cities.
Average Temperatures and Precipitation
Around Christmas, you’ll find Dublin cool, damp, and running low on daylight. Temperatures stay milder than in many northern European cities, but the rain and clouds make the air feel colder than you might expect.
Daytime and Nighttime Temperature Ranges
December daytime highs usually hit 8–10°C (46–50°F). Nights dip to about 3–5°C (37–41°F).
Extreme cold rarely happens, but the damp air and wind can make things feel chillier.
Frost can pop up at night, especially outside the city, but it doesn’t happen every day. Temperatures hardly ever stay below freezing for long.
You’ll feel more of a steady chill than sudden cold snaps.
If you’re planning to spend time outdoors, layering is your friend. A warm jacket, scarf, and gloves make walking through the city or along the coast a lot more comfortable.
Rainfall and Cloud Cover Statistics
Rain falls often in Dublin during December. You’ll usually see about 70–80 mm (2.8–3.2 inches) of precipitation for the month, spread across many days.
Showers are mostly light or moderate, not heavy downpours, but they’re regular enough that you’ll want a waterproof layer handy.
Clouds are a given, with overcast skies most days. Sunshine averages just 2–3 hours per day, which really adds to that damp winter feeling.
The short daylight hours plus all those clouds make the city feel darker earlier in the afternoon.
Wind matters, too. It often hits 20–25 mph, especially near the coast, making rain feel even more uncomfortable.
An umbrella isn’t always practical when it’s windy, so a hooded raincoat is usually a better bet.
Snowfall Probability and Frost
Snow almost never sticks in Dublin in December. If it does happen, it’s usually light and melts quickly.
The city’s coastal spot and mild Atlantic climate keep heavy or lasting snow away.
Frost is more common than snow, especially when skies clear overnight. You might spot icy patches on cars, pavements, or grass in the morning, but they usually thaw once the sun comes up.
If you’re visiting, don’t count on a white Christmas. Instead, expect damp, chilly mornings and the odd frosty start.
Warm shoes with good grip help for walking on wet or icy streets.
Daylight Hours and Sunshine
December brings some of Dublin’s shortest days and lowest sunshine levels. You’ll notice limited daylight, late sunrises, and early sunsets, with only a sliver of direct sunshine each day.
Length of Day Around Christmas
Around Christmas, Dublin gets about 7 to 8 hours of daylight. The winter solstice, just before Christmas, marks the shortest day of the year.
You get way more darkness than light. For comparison, summer days in Dublin can stretch over 16 hours, so the seasonal shift is pretty dramatic.
The short days mean you’ll need to plan outings carefully. If you want to see outdoor sights or take a day trip, use the daylight wisely.
Many people switch to indoor attractions, like museums or historic buildings, once the sun sets.
Sunrise and Sunset Times
In late December, the sun rises around 8:30 AM and sets by 4:00 PM. On the darkest days, sunset can be a bit earlier, closer to 3:55 PM.
Mornings stay dim for a while, and evenings come quickly. The low sun angle throws long shadows, giving the city a softer winter light.
If you’re looking forward to Christmas markets or holiday lights, the early sunset actually works in your favor. Streets and squares light up soon after dusk, so you get that festive feeling even before dinner.
If you’re thinking about outdoor tours or excursions, just remember to schedule them before it gets dark.
Average Sunshine Duration
December is Dublin’s least sunny month. On average, you’ll get 1.5 to 2 hours of direct sunshine per day.
Clouds stick around, and many days are just plain overcast.
For the month, Dublin clocks about 50 to 55 hours of sunshine. That’s way less than May or June, when the city gets over 180 hours.
The mix of limited sunshine and frequent rain showers makes the weather feel gray. Pack waterproof clothing and plan some activities that work even if it’s cloudy or wet.
When the sun does break through, it’s brief but honestly feels pretty special, adding some brightness to those winter days.
Wind, Humidity, and Coastal Influence
Dublin’s winter weather feels damp and brisk because steady winds, high humidity, and the nearby sea all play a part. These factors really shape how cold the air feels, which is why layers and waterproof clothing matter so much when you visit.
Prevailing Winds and Gusts
In December, you’ll notice frequent winds from the southwest and west, bringing mild but moist air from the Atlantic. Average wind speeds usually land between 15–25 km/h (9–15 mph), but stronger gusts happen during storms.
Winds rarely stay calm for long. Sudden gusts can make the air feel colder than the thermometer says.
On open coastal paths or near the River Liffey, you’ll really feel that chill.
Storms sometimes sweep across Ireland in winter. Dublin isn’t as exposed as the west coast, but you might still run into brief, strong winds that can mess with outdoor plans.
Humidity Levels and Sea Effects
Humidity in Dublin peaks in December, averaging around 83%, which is pretty high. This dampness makes the air feel colder, even when the temperature is above freezing.
Moist air also means more drizzle and mist. After a short walk, your clothes might feel damp, even if it’s not raining hard.
The sea keeps humidity high all winter, so the air often feels heavy, and drying clothes or gear can take longer than you’d expect.
| Month | Avg. Humidity | Note |
|---|---|---|
| April | ~68% | Lowest |
| December | ~83% | Highest |
Impact of the Irish Sea and Wicklow Mountains
The Irish Sea helps keep Dublin’s December temperatures milder than inland spots. Nights can dip close to 3°C (37°F), but the sea blocks those extreme cold spells you might see in central Ireland.
The Wicklow Mountains, just south of the city, block some Atlantic weather systems. That means Dublin gets a bit less rain than the west coast, though showers still happen often.
The mountains can also funnel winds toward the city. When you add in sea breezes, open spaces near the coast can feel especially exposed in winter.
What to Pack and Wear for Christmas in Dublin
December in Dublin is cold, damp, and often windy. You’ll need warm clothing that can handle rain, short daylight, and temperatures usually ranging from the mid-30s °F (about 3°C) at night to the mid-40s °F (about 8°C) during the day.
Essential Winter Clothing
Pack layers you can swap in and out as the weather shifts. A waterproof winter coat with insulation is a must, since rain and wind are so common. Grab one with a hood for extra coverage on wet days.
Wear long-sleeved shirts, sweaters, or hoodies under your coat. Jeans or heavier trousers work for wandering the city, but if it’s extra cold, thermal leggings or base layers help a lot.
Accessories like wool scarves, gloves, and hats keep heat in and make outdoor sightseeing much more comfortable. Dublin rarely gets heavy snow, but that damp cold can feel sharper than you’d think, so go for clothes that trap warmth.
Footwear and Accessories for Wet Weather
Dublin’s streets get slick from all the rain, so bring water-resistant walking shoes or boots with good grip. Skip shoes that soak through, since you’ll probably spend hours outside at markets or historic sites.
Pack warm socks, preferably wool or thermal blends. Cotton just holds moisture and will leave your feet cold. Carrying an extra pair in your bag is smart if your shoes get wet.
An umbrella might help on milder rain days, but strong winds can make it useless. A hooded coat or compact rain poncho usually works better. A small waterproof bag cover or crossbody bag helps protect your stuff—maps, phones, cameras—from the damp.
Tips for Staying Comfortable Outdoors
You’ll spend plenty of time walking between attractions, so it’s best to dress for both warmth and flexibility. Layer your clothes so you can adjust quickly when you step from chilly streets into a cozy shop or restaurant.
With short daylight hours in mind, it makes sense to wear something reflective or carry a little flashlight if you’re out in the evening. Main streets stay well lit, but those side lanes? They can get pretty dark.
Pack a lightweight backpack with water, snacks, and maybe a spare pair of gloves. Dublin’s December weather changes fast, so if you’ve got the right gear, you’ll stay dry and comfortable while soaking up the holiday spirit.
Christmas Atmosphere and Seasonal Activities
Dublin in December isn’t just cold and dark. You’ll find lively markets, festive lights all over the city, and plenty of indoor and outdoor activities to keep things interesting—rain or shine.
Christmas in Ireland: Festive Events and Markets
You’ll notice Christmas markets popping up all over Dublin, usually from late November until just before Christmas. These markets bring together stalls with handmade crafts, local food, and warm drinks.
Some of the most popular spots are the Dublin Castle Christmas Market and the one at the International Financial Services Centre. People love to compare Dublin’s markets with those in continental Europe, especially the German-style setups that serve mulled wine and sausages.
Choirs and small music groups often perform seasonal songs out in the public squares. The markets feel busiest in the evenings, when the lights and decorations really make things glow.
If you’d rather skip the crowds, try visiting earlier in the day when it’s a bit quieter.
Holiday Decorations and Lighting Displays
City center streets shine with festive lighting, usually from late November. Grafton Street and Henry Street are famous for their displays, with shop windows and lights overhead drawing in lots of visitors.
You’ll spot decorated Christmas trees in public squares and outside big landmarks. Dublin Castle usually puts up a huge tree and some seasonal displays, which make for great photos.
Shops stay open later in the weeks before Christmas, so you can browse while you take in the decorated streets. Even smaller neighborhoods join in and light up their own areas, which adds to the city’s festive vibe.
Indoor and Outdoor Activities Despite the Weather
December in Dublin feels damp and cool. The average high hovers around 10°C (50°F), and rain shows up pretty often. Still, you’ll find plenty to do if you’re up for it.
If you want to get outside, try a short walk along the River Liffey. Phoenix Park is another option, and some guided tours keep going all year. Just remember, daylight disappears fast and you’ll want to throw on something waterproof.
Inside, Dublin keeps things interesting with historic sites like the Book of Kells at Trinity College. You can duck into a museum or find a cozy traditional pub.
A lot of pubs host live music, especially this time of year. There’s nothing quite like soaking up the warmth and atmosphere while the rain taps on the windows.