Surfside Beach Water Temperature & Swim Forecast
Family Grand-Strand beach.
Very warm water with a light chop and a light breeze — great swimming conditions.
Model estimate · modelled, not a buoy measurement. How accurate is this?
Location
Surfside Beach on the map, with nearby beaches and live sea temperatures.
7-day forecast
Water, air, waves, wind and UV outlook for the week ahead.
No wetsuit
At 27.5°C the water is warm enough to swim and surf in just a swimsuit or boardshorts.
Recommendation tuned for Surfside Beach's current water temperature. Individual tolerance, wind chill, and session length all matter — when in doubt, size up.
Surfside Beach swimming conditions summary
- Water temperature
- 27.5°C
- Water feels
- Bath-warm
- Swimmable today
- Yes — comfortable for most swimmers
- Swim conditions score
- 90/100 · Excellent
- Wetsuit needed
- No wetsuit
- Air temperature
- —
- Waves
- —
- Wind
- —
- UV index
- —
- Average sea temperature (September)
- 27.0 °C
- Warmest months to swim
- June, July, August
At 27.5°C the water is warm enough to swim and surf in just a swimsuit or boardshorts. 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 Surfside Beach right now?
The sea at Surfside Beach is currently 27.5°C — excellent 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 Surfside Beach next week?
Based on long-term September averages and the latest marine model, expect the sea around Surfside Beach to sit close to 24.1°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 Surfside Beach?
June – July – August are typically the warmest months to swim at Surfside Beach, with sea temperatures at their seasonal peak.
Do I need a wetsuit at Surfside Beach?
With water currently at 27.5°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.
Can I swim at Surfside Beach today?
The sea is currently 27.5°C — excellent swimming conditions. Most swimmers will find it pleasant.
- • Located in South Carolina, United States (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.
Best time to swim in Surfside Beach
The sea in Surfside Beach peaks in July, when the water averages around 29°C.
The main swimming season runs from May – October, when surface temperatures stay comfortable for extended sessions.
On average, 6 months a year sit above 20°C — the threshold most swimmers describe as pleasant without a wetsuit.
Shoulder months like April and November are noticeably cooler but often quieter, with fewer crowds and steadier weather.
Outside peak season the water drops toward 18°C, so a 3/2mm shorty or full wetsuit makes long swims much more comfortable.
The coldest month is typically January at around 14°C, when cold-water swimmers dominate the coast.
Surfside Beach sea temperature history
Long-term climatology for Surfside Beach shows an annual mean sea temperature of 21°C, ranging from 14°C in winter to 29°C at the summer peak.
The seasonal swing is roughly 15°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 Surfside Beach, 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.
Surfside Beach sea temperature: frequently asked questions
What is the warmest month to swim in Surfside Beach?
July is the warmest month in Surfside Beach, when the sea averages about 29°C. Late-season warmth often persists a few weeks after peak.
When is the sea coldest in Surfside Beach?
The coldest month in Surfside Beach is typically January, when the water averages around 14°C. Cold-water swimmers and surfers dominate this period.
When can you swim in Surfside Beach without a wetsuit?
The main swimming season in Surfside Beach runs from May – October — about 6 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 Surfside Beach?
Outside peak summer the water in Surfside Beach drops toward 18°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 Surfside Beach?
The long-term annual mean sea temperature in Surfside Beach is about 21°C, based on multi-decadal climatology of the surrounding waters.
How do I check the current sea temperature in Surfside Beach?
The live reading at the top of this page shows the current sea temperature in Surfside Beach, 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: May – Jun – Jul – Aug – Sep – Oct
| Month | Sea | Comfort |
|---|---|---|
| Jan | 14°C | Bracing |
| Feb | 14°C | Bracing |
| Mar | 16°C | Bracing |
| Apr | 19°C | Pleasant |
| May | 23°C | Warm |
| Jun | 27°C | Hot |
| Jul ⭐ | 29°C | Hot |
| Aug | 29°C | Hot |
| Sep | 27°C | Hot |
| Oct | 23°C | Warm |
| Nov | 19°C | Pleasant |
| Dec | 16°C | Bracing |
Nearby beaches
The closest coastline, with live water temperatures.