ERA5 almanac comparison — 8 years of real data
Destin vs San Antonio: weather in December
San Antonio edges out Destin for sun in December: 17% clear historically versus 4% (8-year ERA5 average, a 13-point gap). Both are viable — San Antonio is the safer bet.
Destin
FL
- Clear days, December
- 4%
- Sample size
- n=248 days
- Avg high
- 64°F
- Early December (1st–15th)
- 2%
- Late December (16th–end)
- 5%
- Rain frequency
- 33% of days
San Antonio
TX
- Clear days, December
- 17%
- Sample size
- n=248 days
- Avg high
- 68°F
- Early December (1st–15th)
- 20%
- Late December (16th–end)
- 14%
- Rain frequency
- 21% of days
Frequently asked
Is Destin or San Antonio warmer in December?
San Antonio runs warmer by day in December. Destin averages highs of 64°F (highs n=248 days); San Antonio averages highs of 68°F (highs n=248 days) (ERA5 2018–2025). Historical averages, not a forecast.
Does it rain more in Destin or San Antonio in December?
Days with measurable rain: Destin 33%, San Antonio 21% (n=248 and n=248 days). ERA5 2018–2025; historical, not a forecast.
Which is sunnier in December, Destin or San Antonio?
San Antonio edges out Destin for sun in December: 17% clear historically versus 4% (8-year ERA5 average, a 13-point gap). Both are viable — San Antonio is the safer bet.
Compare Destin vs San Antonio 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.