Can I swim at Forty Foot right now?

The sea at Forty Foot is currently 14.2°C — cold swimming conditions. Most swimmers will find the water comfortable when it's above 22°C; below 18°C feels fresh and a wetsuit is recommended.

What will the sea temperature be at Forty Foot next week?

Based on long-term June averages and the latest marine model, expect the sea around Forty Foot to sit close to 14.4°C over the next 7 days. Check the live 7-day chart above for the exact daily outlook.

When is the best month to swim at Forty Foot?

July – August – September are typically the warmest months to swim at Forty Foot, with sea temperatures at their seasonal peak.

Do I need a wetsuit at Forty Foot?

With water currently at 14.2°C: above 22°C no wetsuit needed; 18–22°C a shorty is comfortable for long swims; 14–18°C a 3/2mm full suit; below 14°C a 4/3mm or thicker.

Ireland

County Dublin · Atlantic Ocean

Forty Foot

Blue Flag swimming strand on the Wild Atlantic coast near Sandycove.

Cool water with calm seas and a moderate breeze — fresh conditions — a wetsuit is recommended.

View on map OpenStreetMap Directions

Sea temperature now

14.2°Ccool

Fair

Updated just now · Source: Open-Meteo Marine

Air temperature

17.5°C

Wave height

0.5 m

Wind

17.3 km/h

UV index

4.3 UV index

Location

Forty Foot on the map, with nearby beaches and live sea temperatures.

7-day forecast

Water, air, waves, wind and UV outlook for the week ahead.

Wetsuit recommendation

4/3mm fullsuit

At 14.2°C you need a 4/3mm fullsuit, and many surfers add neoprene boots.

+ Optional 3mm boots

Surf & watersports

Cool water — the classic UK/Atlantic spring or Pacific Northwest summer range. A 4/3mm sealed-seam suit keeps you in the water for 90+ minutes. Boots prevent foot pain on rocky entries and extend session length.

Open-water swimming

Acclimatised swimmers manage 30 minutes; a thicker swim wetsuit (3/2) helps.

Recommendation tuned for Forty Foot's current water temperature. Individual tolerance, wind chill, and session length all matter — when in doubt, size up.

Quick answer

Can I swim at Forty Foot today?

The sea is currently 14.2°C — fair swimming conditions. Acclimatised swimmers will be most comfortable.

Key takeaways

• Located in County Dublin, Ireland (Atlantic Ocean).
• Family friendly with calm, accessible water.
• Live data refreshed hourly from Open-Meteo Marine.

Monthly sea temperature averages

Tap any month to see what to expect — based on regional climatology.

Jan10°C Feb9°C Mar9°C Apr10°C May11°C Jun13°C Jul15°C Aug16°C Sep15°C Oct14°C Nov12°C Dec11°C

9°C → 16°C· Current month outlined· “Best” = within 2°C of the annual peak

Year-round sea temperature

Month	Sea	Comfort
Jan	10°C	Cold
Feb	9°C	Cold
Mar	9°C	Cold
Apr	10°C	Cold
May	11°C	Cold
Jun	13°C	Cold
Jul	15°C	Bracing
Aug ⭐	16°C	Bracing
Sep	15°C	Bracing
Oct	14°C	Bracing
Nov	12°C	Cold
Dec	11°C	Cold