@WhereinDublinWhen people think of Dublin, they often imagine its lively streets, cozy pubs, and rainy skies. But here’s a fun fact, Dublin has some surprisingly lovely beaches, and a few of them are warmer than you’d expect. Sure, it’s not the Mediterranean, but if you’re after a beach day that feels a little less chilly, you’ll want to know where to go.
This post digs deep into Dublin’s coastal gems, explores what makes some beaches warmer than others, and gives you the best spots to enjoy a relaxing day by the Irish Sea, without freezing.
Let’s jump in.
Let’s Understand Dublin’s Beach Climate
Before picking the warmest beach, it helps to understand how Dublin’s coastal weather works. Dublin’s beaches line the Irish Sea, which is generally cool year-round. The average sea temperature ranges between 8°C in winter and 16°C in late summer (July–September).
The “warmth” of a beach in Dublin doesn’t necessarily mean tropical heat, it often means more sheltered, less windy, and better sun exposure compared to others.
A few factors make certain beaches feel warmer:
1. Shelter from Wind
Beaches protected by natural barriers, cliffs, or headlands trap heat and block chilly sea winds.
2. Sun Exposure
South-facing beaches get more sunlight throughout the day, warming both the sand and water.
3. Shallow Water
Shallow bays tend to warm up quicker, especially during sunny afternoons.
4. Urban Microclimate
Beaches closer to the city center or in built-up areas sometimes feel slightly warmer because urban structures retain heat.
Now that you’ve got the science down, let’s look at the warmest beaches around Dublin.
The Warmest Beaches in Dublin
While Dublin’s beaches each have their own charm, a few stand out for feeling just that bit warmer. Based on temperature data, location, and local experiences (including from my own personal experience), here’s a list of the best warm spots by the coast.
1. Seapoint Beach (Monkstown)
If there’s one beach in Dublin that locals swear feels warmer than it should, it’s Seapoint.
Why It Feels Warmer
The beach is sheltered by the coastline that wraps around Dublin Bay, reducing cold wind exposure.
It has a mix of sandy and rocky areas that retain heat through the day.
The shallow water near the promenade warms up faster in sunlight.
Best Time to Visit
Afternoons in late June to early September are ideal. Around 3 PM to 6 PM, the tide is usually gentle, and the sun hits directly on the bay, creating a comfortable atmosphere for swimming or relaxing.
What You’ll Love
Calm waves, perfect for a quick dip.
Local coffee stands and cafés nearby for post-swim warmth.
A mix of locals and casual swimmers, giving it a friendly vibe.
2. Killiney Beach
Set against a backdrop of hills, Killiney Beach offers both beauty and warmth.
Why It Feels Warmer
The beach faces southeast, meaning it soaks up the morning and midday sun.
The surrounding hills create a natural wind barrier.
The stones along the beach retain heat and radiate it back during the afternoon.
Best Time to Visit
Morning or midday, when the sun directly hits the bay. Early risers will love this spot for its peaceful, sunlit mornings.
Extra Perks
It’s great for long walks or light swimming.
The nearby town of Dalkey has charming cafés for a warm bite after your beach stroll.
3. Sandycove Beach (Forty Foot Area)
If you want a mix of history, local life, and slightly warmer water, Sandycove Beach — right beside the famous Forty Foot swimming spot — is a must.
Why It Feels Warmer
Sandycove’s curved bay shape blocks wind and traps sunlight.
The shallow waters near the sandy part warm up quicker than deeper areas.
The rocks around the bay radiate stored heat, especially during summer evenings.
When to Visit
Late afternoon, especially from June through early September. This is when the tide, light, and temperature all align perfectly.
Why It’s Worth It
It’s a favorite for Dubliners year-round.
The small beach area stays cozy even on breezy days.
You can dip in the Forty Foot if you’re brave enough — it’s legendary for a reason.
4. Burrow Beach (Sutton)
This lesser-known gem sits between Sutton and Howth, and it’s surprisingly mild compared to its neighbors.
Why It Feels Warmer
Burrow Beach is surrounded by dunes, which help trap warm air.
The sand warms quickly and stays warm even after sunset.
Its narrow shape creates a mini “heat pocket” effect.
When to Go
Midday to early evening. The best conditions usually happen during low tide when more sand is exposed.
What Makes It Special
Fewer crowds than Dollymount or Portmarnock.
Calm, shallow waters for paddling or sunbathing.
Peaceful views of Howth Head and Ireland’s Eye.
5. Portmarnock Beach (Velvet Strand)
Portmarnock is one of Dublin’s best-known beaches, and while it’s big and breezy, some areas can be surprisingly warm.
Why It Feels Warmer
The southern end near the Martello Tower gets better shelter from the wind.
Its vast sandy surface warms quickly under sunlight.
The water remains shallow near the shore for quite a stretch.
When to Visit
Visit in late afternoon when the sand has had time to heat up and the wind usually drops.
Bonus Tip
Bring a light windbreaker. The breeze can pick up, but you’ll still feel the warmth if you stick near the dunes or the southern stretch.
6. Dollymount Strand (Bull Island)
Yes, it’s windy — but on a clear summer day, Dollymount Strand can actually feel quite warm near the dunes.
Why It Feels Warmer (in some spots)
The dunes shield parts of the beach from cold sea air.
Shallow areas of water close to the shore heat up during low tide.
It faces slightly southeast, getting good morning sunshine.
Ideal Visit Time
Go on a calm, sunny morning. You’ll catch the warm light before the breeze starts up.
Why You’ll Love It
It’s one of Dublin’s cleanest and most scenic beaches.
Great for long walks, birdwatching, or just soaking up some rare Irish sun.
7. Skerries South Strand
A bit outside the main city area but worth the trip, Skerries South Strand is known for its microclimate.
Why It Feels Warmer
Its position along a curved bay means less wind and steady sun exposure.
The tide reveals soft, warm sand flats that hold heat well.
The nearby harbor keeps the area calmer and less exposed.
Best Time to Visit
Late afternoon to sunset — the golden light reflects off the sea and warms the whole beach.
Why It’s a Local Favorite
Quiet, scenic, and ideal for a relaxed day out.
Plenty of seaside cafés and ice cream spots nearby.
Comparing Dublin’s Beaches by Warmth
| Beach Name | Warmth Level (1–5) | Best Time to Visit | Wind Protection | Water Depth | Crowd Level |
|---|---|---|---|---|---|
| Seapoint | ⭐⭐⭐⭐⭐ | Afternoon | Excellent | Shallow | Moderate |
| Killiney | ⭐⭐⭐⭐ | Morning–Midday | Good | Deep | Medium |
| Sandycove | ⭐⭐⭐⭐ | Afternoon | Excellent | Shallow | Busy |
| Burrow Beach | ⭐⭐⭐⭐ | Midday | Very Good | Shallow | Low |
| Portmarnock | ⭐⭐⭐ | Afternoon | Medium | Shallow | High |
| Dollymount | ⭐⭐⭐ | Morning | Fair | Shallow | Medium |
| Skerries South Strand | ⭐⭐⭐⭐ | Late Afternoon | Very Good | Shallow | Low |
Tips for Staying Warm at Dublin Beaches
Even the warmest beach in Dublin won’t feel tropical, but there are simple ways to stay comfortable.
1. Time It Right
Go between 12 PM and 5 PM, when the sun is highest and the air is warmest.
2. Choose Sheltered Spots
Stay close to rocks, dunes, or sea walls — these block cold winds.
3. Bring a Picnic Blanket or Towel
Thick fabrics retain warmth and stop the cold sand from seeping through.
4. Dress Smartly
Layer up. Bring a hoodie or light jacket for when the breeze picks up.
5. Stay Active
A quick walk or beach game helps warm you up naturally.
Why Dublin’s Beaches Are Worth Visiting — Even If They’re Not Hot
You won’t find tropical heat in Dublin, but what you will find is character. The beaches here have a charm that’s hard to match — friendly locals, clear sea air, and views that shift beautifully with the light.
From my own personal experience, a day at Seapoint or Sandycove can feel every bit as refreshing and enjoyable as beaches in warmer countries. The trick is to go with the right expectations and the right gear — and appreciate the unique vibe that Dublin’s coast offers.
Whether you’re there for a swim, a walk, or just to enjoy the sound of waves with a coffee in hand, Dublin’s beaches can surprise you with how peaceful, pleasant, and yes, occasionally warm they can be.
Final Thoughts
So, where in Dublin is the warmest beach?
If you want a straight answer — Seapoint takes the crown for the warmest-feeling beach, thanks to its sheltered bay, shallow water, and sunny orientation. But Sandycove, Killiney, and Burrow Beach aren’t far behind.
Each has its own microclimate that gives off that rare Dublin “beach day” feeling.
If you’re planning your next coastal escape around Dublin, check the tide times, pick a sunny afternoon, and head to one of these warm spots. You’ll see for yourself that the Irish Sea isn’t as chilly as everyone says — especially if you know where to go.
