Skip to main content
SunnyDays

ERA5 almanac comparison — 8 years of real data

Barbados vs Jacksonville: weather in December

Essentially a tie in December: Barbados is 16% clear historically, Jacksonville is 16% clear (8-year ERA5 average) — within the noise. Avg high 81°F vs 67°F. Barbados also sees measurably more rain than Jacksonville this month (54% vs 22% of days). Pick based on flight time or price, not weather — the weather won't decide this one for you.

What you are reading: 8-year historical averages, not a forecast. Either destination can still surprise you this specific December. For this week’s actual forecast, each destination links to its live page below.

Barbados

BB

Clear days, December
16%
Sample size
n=248 days
Avg high
81°F
Early December (1st–15th)
13%
Late December (16th–end)
18%
Rain frequency
54% of days

Jacksonville

FL

Clear days, December
16%
Sample size
n=248 days
Avg high
67°F
Early December (1st–15th)
16%
Late December (16th–end)
16%
Rain frequency
22% of days
See this week’s live forecast →

Compare Barbados vs Jacksonville 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 7-day outlook for any destination is on its own page and may differ from the long-run average. Data from Open-Meteo.