ERA5 almanac comparison — 8 years of real data
Atlanta vs Orlando: weather in December
Orlando edges out Atlanta for sun in December: 26% clear historically versus 1% (8-year ERA5 average, a 25-point gap). Both are viable — Orlando is the safer bet.
Atlanta
GA
- Clear days, December
- 1%
- Sample size
- n=248 days
- Avg high
- 56°F
- Early December (1st–15th)
- 1%
- Late December (16th–end)
- 1%
- Rain frequency
- 35% of days
Orlando
FL
- Clear days, December
- 26%
- Sample size
- n=248 days
- Avg high
- 72°F
- Early December (1st–15th)
- 32%
- Late December (16th–end)
- 20%
- Rain frequency
- 22% of days
Frequently asked
Is Atlanta or Orlando warmer in December?
Orlando runs warmer by day in December. Atlanta averages highs of 56°F (highs n=248 days); Orlando averages highs of 72°F (highs n=248 days) (ERA5 2018–2025). Historical averages, not a forecast.
Does it rain more in Atlanta or Orlando in December?
Days with measurable rain: Atlanta 35%, Orlando 22% (n=248 and n=248 days). ERA5 2018–2025; historical, not a forecast.
Which is sunnier in December, Atlanta or Orlando?
Orlando edges out Atlanta for sun in December: 26% clear historically versus 1% (8-year ERA5 average, a 25-point gap). Both are viable — Orlando is the safer bet.
Compare Atlanta vs Orlando 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.