ERA5 almanac comparison — 8 years of real data
Jamaica vs San Antonio: weather in November
San Antonio edges out Jamaica for sun in November: 33% clear historically versus 15% (8-year ERA5 average, a 18-point gap). Jamaica also sees measurably more rain than San Antonio this month (57% vs 30% of days). Both are viable — San Antonio is the safer bet.
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.
Jamaica
JM
- 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
San Antonio
TX
- Clear days, November
- 33%
- Sample size
- n=240 days
- Avg high
- 72°F
- Early November (1st–15th)
- 39%
- Late November (16th–end)
- 27%
- Rain frequency
- 30% of days
Compare Jamaica vs San Antonio 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.