ERA5 almanac comparison — 8 years of real data
Naples vs Nashville: weather in January
Naples is the clear winner for sun in January: 35% of days historically clear versus just 0% in Nashville — a 35-point gap across 8 years of ERA5 data. This isn't close.
Naples
FL
- Clear days, January
- 35%
- Sample size
- n=248 days
- Avg high
- 73°F
- Early January (1st–15th)
- 32%
- Late January (16th–end)
- 37%
- Rain frequency
- 25% 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 Naples or Nashville warmer in January?
Naples runs warmer by day in January. Naples averages highs of 73°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 Naples or Nashville in January?
Days with measurable rain: Naples 25%, Nashville 35% (n=248 and n=248 days). ERA5 2018–2025; historical, not a forecast.
Which is sunnier in January, Naples or Nashville?
Naples is the clear winner for sun in January: 35% of days historically clear versus just 0% in Nashville — a 35-point gap across 8 years of ERA5 data. This isn't close.
Compare Naples 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.