ERA5 almanac comparison — 8 years of real data
San Antonio vs Sea Island: weather in June
San Antonio edges out Sea Island for sun in June: 31% clear historically versus 24% (8-year ERA5 average, a 7-point gap). Sea Island also sees measurably more rain than San Antonio this month (52% vs 36% of days). Both are viable — San Antonio is the safer bet.
San Antonio
TX
- Clear days, June
- 31%
- Sample size
- n=240 days
- Avg high
- 94°F
- Early June (1st–15th)
- 32%
- Late June (16th–end)
- 30%
- Rain frequency
- 36% of days
Sea Island
GA
- Clear days, June
- 24%
- Sample size
- n=240 days
- Avg high
- 85°F
- Early June (1st–15th)
- 24%
- Late June (16th–end)
- 25%
- Rain frequency
- 52% of days
Frequently asked
Is San Antonio or Sea Island warmer in June?
San Antonio runs warmer by day in June. San Antonio averages highs of 94°F (highs n=240 days); Sea Island averages highs of 85°F (highs n=240 days) (ERA5 2018–2025). Historical averages, not a forecast.
Does it rain more in San Antonio or Sea Island in June?
Sea Island is measurably wetter than San Antonio. Days with measurable rain: San Antonio 36%, Sea Island 52% (n=240 and n=240 days). ERA5 2018–2025; historical, not a forecast.
Which is sunnier in June, San Antonio or Sea Island?
San Antonio edges out Sea Island for sun in June: 31% clear historically versus 24% (8-year ERA5 average, a 7-point gap). Sea Island also sees measurably more rain than San Antonio this month (52% vs 36% of days). Both are viable — San Antonio is the safer bet.
Compare San Antonio vs Sea Island 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 forecast for any destination is on its own page and may differ from the long-run average. Data from Open-Meteo.