ERA5 almanac comparison — 8 years of real data
Jamaica vs Nashville: weather in January
Jamaica edges out Nashville for sun in January: 23% clear historically versus 0% (8-year ERA5 average, a 23-point gap). Both are viable — Jamaica is the safer bet.
Jamaica
Jamaica
- Clear days, January
- 23%
- Sample size
- n=248 days
- Avg high
- 81°F
- Early January (1st–15th)
- 23%
- Late January (16th–end)
- 23%
- Rain frequency
- 42% of days
Nashville
TN
- Clear days, January
- 0%
- Sample size
- n=248 days
- Avg high
- 47°F
- Early January (1st–15th)
- 0%
- Late January (16th–end)
- 0%
- Rain frequency
- 35% of days
Frequently asked
Is Jamaica or Nashville warmer in January?
Jamaica runs warmer by day in January. Jamaica averages highs of 81°F (highs n=248 days); Nashville averages highs of 47°F (highs n=248 days) (ERA5 2018–2025). Historical averages, not a forecast.
Does it rain more in Jamaica or Nashville in January?
Days with measurable rain: Jamaica 42%, Nashville 35% (n=248 and n=248 days). ERA5 2018–2025; historical, not a forecast.
Which is sunnier in January, Jamaica or Nashville?
Jamaica edges out Nashville for sun in January: 23% clear historically versus 0% (8-year ERA5 average, a 23-point gap). Both are viable — Jamaica is the safer bet.
Compare Jamaica vs Nashville 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.