ERA5 almanac comparison — 8 years of real data
Amelia Island vs St. Martin: weather in June
Essentially a tie in June: Amelia Island is 18% clear historically, St. Martin is 18% clear (8-year ERA5 average) — within the noise. Avg high 86°F vs 79°F. Amelia Island also sees measurably more rain than St. Martin this month (64% vs 34% of days). Pick based on flight time or price, not weather — the weather won't decide this one for you.
Amelia Island
FL
- Clear days, June
- 18%
- Sample size
- n=240 days
- Avg high
- 86°F
- Early June (1st–15th)
- 16%
- Late June (16th–end)
- 19%
- Rain frequency
- 64% of days
St. Martin
SX
- Clear days, June
- 18%
- Sample size
- n=240 days
- Avg high
- 79°F
- Early June (1st–15th)
- 17%
- Late June (16th–end)
- 18%
- Rain frequency
- 34% of days
Compare Amelia Island vs St. Martin 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.