ERA5 almanac comparison — 8 years of real data

Birmingham vs Jamaica: weather in November

Essentially a tie in November: Birmingham is 14% clear historically, Jamaica is 15% clear (8-year ERA5 average) — within the noise. Avg high 64°F vs 84°F. Jamaica also sees measurably more rain than Birmingham this month (57% vs 26% 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 November. For this week’s actual forecast, each destination links to its live page below.

Birmingham

Clear days, November: 14%
Sample size: n=240 days
Avg high: 64°F
Early November (1st–15th): 21%
Late November (16th–end): 6%
Rain frequency: 26% of days

Jamaica

Clear days, November: 15%
Sample size: n=240 days
Avg high: 84°F
Early November (1st–15th): 11%
Late November (16th–end): 19%
Rain frequency: 57% of days

Compare Birmingham vs Jamaica 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.