ERA5 almanac comparison — 8 years of real data
Jamaica vs San Antonio: weather in July
San Antonio edges out Jamaica for sun in July: 44% clear historically versus 18% (8-year ERA5 average, a 26-point gap). Jamaica also sees measurably more rain than San Antonio this month (58% vs 29% of days). Both are viable — San Antonio is the safer bet.
Jamaica
Jamaica
- Clear days, July
- 18%
- Sample size
- n=248 days
- Avg high
- 87°F
- Early July (1st–15th)
- 22%
- Late July (16th–end)
- 15%
- Rain frequency
- 58% of days
San Antonio
TX
- Clear days, July
- 44%
- Sample size
- n=248 days
- Avg high
- 95°F
- Early July (1st–15th)
- 38%
- Late July (16th–end)
- 50%
- Rain frequency
- 29% of days
Frequently asked
Is Jamaica or San Antonio warmer in July?
San Antonio runs warmer by day in July. Jamaica averages highs of 87°F (highs n=248 days); San Antonio averages highs of 95°F (highs n=248 days) (ERA5 2018–2025). Historical averages, not a forecast.
Does it rain more in Jamaica or San Antonio in July?
Jamaica is measurably wetter than San Antonio. Days with measurable rain: Jamaica 58%, San Antonio 29% (n=248 and n=248 days). ERA5 2018–2025; historical, not a forecast.
Which is sunnier in July, Jamaica or San Antonio?
San Antonio edges out Jamaica for sun in July: 44% clear historically versus 18% (8-year ERA5 average, a 26-point gap). Jamaica also sees measurably more rain than San Antonio this month (58% vs 29% of days). Both are viable — San Antonio is the safer bet.
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 forecast for any destination is on its own page and may differ from the long-run average. Data from Open-Meteo.