ERA5 almanac comparison — 8 years of real data
Costa Rica — Manuel Antonio vs Naples: weather in January
Essentially a tie in January: Costa Rica — Manuel Antonio is 37% clear historically, Naples is 35% clear (8-year ERA5 average) — within the noise. Avg high 84°F vs 73°F. Pick based on flight time or price, not weather — the weather won't decide this one for you.
Costa Rica — Manuel Antonio
Costa Rica
- Clear days, January
- 37%
- Sample size
- n=248 days
- Avg high
- 84°F
- Early January (1st–15th)
- 24%
- Late January (16th–end)
- 50%
- Rain frequency
- 27% of days
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
Frequently asked
Is Costa Rica — Manuel Antonio or Naples warmer in January?
Costa Rica — Manuel Antonio runs warmer by day in January. Costa Rica — Manuel Antonio averages highs of 84°F (highs n=248 days); Naples averages highs of 73°F (highs n=248 days) (ERA5 2018–2025). Historical averages, not a forecast.
Does it rain more in Costa Rica — Manuel Antonio or Naples in January?
Days with measurable rain: Costa Rica — Manuel Antonio 27%, Naples 25% (n=248 and n=248 days). ERA5 2018–2025; historical, not a forecast.
Which is sunnier in January, Costa Rica — Manuel Antonio or Naples?
Essentially a tie in January: Costa Rica — Manuel Antonio is 37% clear historically, Naples is 35% clear (8-year ERA5 average) — within the noise. Avg high 84°F vs 73°F. Pick based on flight time or price, not weather — the weather won't decide this one for you.
Compare Costa Rica — Manuel Antonio vs Naples 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.