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SunnyDays

ERA5 almanac comparison — 8 years of real data

Antigua vs Hilton Head: weather in March

Essentially a tie in March: Antigua is 18% clear historically, Hilton Head is 19% clear (8-year ERA5 average) — within the noise. Avg high 82°F vs 69°F. Antigua also sees measurably more rain than Hilton Head this month (49% vs 30% of days). Pick based on flight time or price, not weather — the weather won't decide this one for you.

What you are reading: 8-year historical averages, not a forecast. Either destination can still surprise you this specific March. For this week’s actual forecast, each destination links to its live page below.

Antigua

AG

Clear days, March
18%
Sample size
n=248 days
Avg high
82°F
Early March (1st–15th)
27%
Late March (16th–end)
9%
Rain frequency
49% of days

Hilton Head

SC

Clear days, March
19%
Sample size
n=248 days
Avg high
69°F
Early March (1st–15th)
18%
Late March (16th–end)
20%
Rain frequency
30% of days
See this week’s live forecast →

Compare Antigua vs Hilton Head in another month

All percentages are historical averages from the ERA5 reanalysis via Open-Meteo, 8 full years (2018–2025). “Clear” means avg high ≥ 72 °F, precipitation < 1 mm, and a non-precipitation weather code. This is history, not a forecast. The live 7-day outlook for any destination is on its own page and may differ from the long-run average. Data from Open-Meteo.