Skip to content

Best Time to Dive South Carolina

Across 67 South Carolina dive sites with multi-year conditions history, July historically shows the most favorable days — 91% of sampled days in the good band. The next-highest months are May (78%), June (73%) and November (73%). March and December historically show the fewest favorable days (66% of sampled days). Average water temperature in the sample runs from about 13°C in January to 29°C in July. Typical seas range from 0.9 m to 1.3 m of significant wave height through the year. These figures are historical climatology computed from measured conditions — patterns, not a forecast or a guarantee.

Computed from our own conditions climatology — measured history, not brochure copy.

Which months are historically most favorable in South Carolina?

MonthHistorically favorable daysWater tempTypical seas
Jan71%13°C1.1 m
Feb67%14°C1.2 m
Mar66%16°C1.2 m
Apr72%20°C1.1 m
May78%24°C1.0 m
Jun73%27°C1.0 m
Jul91%29°C0.9 m
Aug72%29°C1.1 m
Sep68%27°C1.2 m
Oct68%23°C1.3 m
Nov73%20°C1.1 m
Dec66%15°C1.3 m

% = share of sampled days scoring in the favorable band, median across 67 dive sites with at least two years of history. Ringed = historical peak.

How does this compare worldwide? The Most Reliable Diving Months on Earth ranks 61 countries by the same measure.

Marine life seasons

Sighting patterns across the wider US & Canada — Atlantic coast region — not site-specific promises.

Bars are Jan–Dec — months when sightings historically concentrate (GBIF occurrence records). Wildlife is never guaranteed.

Diving South Carolina soon? Browse its dive sites with auto-updating 7-day condition windows — free, no account needed.

Choosing between destinations? Compare them month by month with the Trip PlannerPro