ERA5 almanac comparison — 8 years of real data
Birmingham vs Miami: weather in January
Miami edges out Birmingham for sun in January: 28% clear historically versus 0% (8-year ERA5 average, a 28-point gap). Both are viable — Miami is the safer bet.
Birmingham
AL
- Clear days, January
- 0%
- Sample size
- n=248 days
- Avg high
- 53°F
- Early January (1st–15th)
- 0%
- Late January (16th–end)
- 0%
- Rain frequency
- 32% of days
Miami
FL
- Clear days, January
- 28%
- Sample size
- n=248 days
- Avg high
- 75°F
- Early January (1st–15th)
- 30%
- Late January (16th–end)
- 26%
- Rain frequency
- 33% of days
Frequently asked
Is Birmingham or Miami warmer in January?
Miami runs warmer by day in January. Birmingham averages highs of 53°F (highs n=248 days); Miami averages highs of 75°F (highs n=248 days) (ERA5 2018–2025). Historical averages, not a forecast.
Does it rain more in Birmingham or Miami in January?
Days with measurable rain: Birmingham 32%, Miami 33% (n=248 and n=248 days). ERA5 2018–2025; historical, not a forecast.
Which is sunnier in January, Birmingham or Miami?
Miami edges out Birmingham for sun in January: 28% clear historically versus 0% (8-year ERA5 average, a 28-point gap). Both are viable — Miami is the safer bet.
Compare Birmingham vs Miami 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.