Portugal
Lisbon Coast · Atlantic Ocean

Praia do Ribeiro do Cavalo Water Temperature & Swim Forecast

Lisbon Coast wild cove.

Mild water with a light chop and a light breeze — good swimming conditions.

Sea temperature now
20.9°Cwarm
Excellent
Source: Open-Meteo Marine

Model estimate · modelled, not a buoy measurement. How accurate is this?

Air temperature
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Wave height
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Wind
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UV index
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Location

Praia do Ribeiro do Cavalo 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

Shorty 2mm

At 20.9°C a 2mm shorty keeps surfers warm; lap swimmers can usually skip the neoprene.

Surf & watersports
Pleasant but not warm. A short-arm short-leg ("shorty") wetsuit traps body heat through the core while leaving arms and legs free. Open-water swimmers training for 30–60 minutes can usually go without; longer sessions benefit from a thin swim wetsuit.
Open-water swimming
Most swimmers fine to 60 minutes without; consider a 2mm swim suit beyond.

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

Praia do Ribeiro do Cavalo swimming conditions summary

Water temperature
20.9°C
Water feels
Pleasant
Swimmable today
Yes — comfortable for most swimmers
Swim conditions score
81/100 · Excellent
Wetsuit needed
Shorty 2mm
Air temperature
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Waves
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Wind
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UV index
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Average sea temperature (September)
21.0 °C
Warmest months to swim
July, August, September

At 20.9°C a 2mm shorty keeps surfers warm; lap swimmers can usually skip the neoprene. Model estimate. Water, wave, wind and UV values are Open-Meteo marine/weather model estimates, refreshed hourly — not buoy measurements.

Frequently asked questions

Can I swim at Praia do Ribeiro do Cavalo right now?

The sea at Praia do Ribeiro do Cavalo is currently 20.9°C — good 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 Praia do Ribeiro do Cavalo next week?

Based on long-term September averages and the latest marine model, expect the sea around Praia do Ribeiro do Cavalo to sit close to 19.6°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 Praia do Ribeiro do Cavalo?

July – August – September are typically the warmest months to swim at Praia do Ribeiro do Cavalo, with sea temperatures at their seasonal peak.

Do I need a wetsuit at Praia do Ribeiro do Cavalo?

With water currently at 20.9°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.

Quick answer

Can I swim at Praia do Ribeiro do Cavalo today?

The sea is currently 20.9°C — excellent swimming conditions. Most swimmers will find it pleasant.

Key takeaways
  • • Located in Lisbon Coast, Portugal (Atlantic Ocean).
  • • Best suited to confident swimmers and watersports.
  • • Live data refreshed hourly from Open-Meteo Marine.

Monthly sea temperature averages

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

14°C → 21°C· Current month outlined· “Best” = within 2°C of the annual peak

Best time to swim in Praia do Ribeiro do Cavalo

The sea in Praia do Ribeiro do Cavalo peaks in August, when the water averages around 21°C.

The main swimming season runs from July – September, when surface temperatures stay comfortable for extended sessions.

On average, 3 months a year sit above 20°C — the threshold most swimmers describe as pleasant without a wetsuit.

Shoulder months like June and October are noticeably cooler but often quieter, with fewer crowds and steadier weather.

Outside peak season the water drops toward 14°C, so a 3/2mm shorty or full wetsuit makes long swims much more comfortable.

The coldest month is typically February at around 14°C, when cold-water swimmers dominate the coast.

Praia do Ribeiro do Cavalo sea temperature history

Long-term climatology for Praia do Ribeiro do Cavalo shows an annual mean sea temperature of 18°C, ranging from 14°C in winter to 21°C at the summer peak.

The seasonal swing is roughly 7°C between the coldest and warmest month — a useful yardstick when comparing years or checking whether the current sea is running above or below average.

Recent decades have trended slightly warmer at Praia do Ribeiro do Cavalo, in line with regional sea-surface temperature records for the wider basin.

Monthly averages below are drawn from multi-decadal climatology and are updated as new observations arrive.

Jan
15°C
Feb
14°C
Mar
15°C
Apr
16°C
May
17°C
Jun
19°C
Jul
20°C
Aug
21°C
Sep
21°C
Oct
19°C
Nov
18°C
Dec
16°C

Praia do Ribeiro do Cavalo sea temperature: frequently asked questions

What is the warmest month to swim in Praia do Ribeiro do Cavalo?

August is the warmest month in Praia do Ribeiro do Cavalo, when the sea averages about 21°C. Late-season warmth often persists a few weeks after peak.

When is the sea coldest in Praia do Ribeiro do Cavalo?

The coldest month in Praia do Ribeiro do Cavalo is typically February, when the water averages around 14°C. Cold-water swimmers and surfers dominate this period.

When can you swim in Praia do Ribeiro do Cavalo without a wetsuit?

The main swimming season in Praia do Ribeiro do Cavalo runs from July – September — about 3 months a year when the sea sits above 20°C, the level most swimmers describe as pleasant without a wetsuit.

Do I need a wetsuit in Praia do Ribeiro do Cavalo?

Outside peak summer the water in Praia do Ribeiro do Cavalo drops toward 14°C, so a 3/2mm shorty or full wetsuit makes long swims much more comfortable. In peak months most swimmers go without.

What is the average sea temperature in Praia do Ribeiro do Cavalo?

The long-term annual mean sea temperature in Praia do Ribeiro do Cavalo is about 18°C, based on multi-decadal climatology of the surrounding waters.

How do I check the current sea temperature in Praia do Ribeiro do Cavalo?

The live reading at the top of this page shows the current sea temperature in Praia do Ribeiro do Cavalo, updated hourly from marine buoy and satellite data. The 7-day forecast covers water, air, waves, wind and UV for the week ahead.

Year-round sea temperature

Best swim months: Jul – Aug – Sep

MonthSeaComfort
Jan15°CBracing
Feb14°CBracing
Mar15°CBracing
Apr16°CBracing
May17°CBracing
Jun19°CPleasant
Jul20°CPleasant
Aug ⭐21°CPleasant
Sep21°CPleasant
Oct19°CPleasant
Nov18°CPleasant
Dec16°CBracing

Nearby beaches

The closest coastline, with live water temperatures.