ERA5 almanac comparison — 8 years of real data
Cancún vs San Antonio: weather in November
San Antonio edges out Cancún for sun in November: 33% clear historically versus 15% (8-year ERA5 average, a 18-point gap). Cancún also sees measurably more rain than San Antonio this month (58% vs 30% of days). Both are viable — San Antonio is the safer bet.
Cancún
Mexico
- Clear days, November
- 15%
- Sample size
- n=240 days
- Avg high
- 82°F
- Early November (1st–15th)
- 8%
- Late November (16th–end)
- 22%
- Rain frequency
- 58% 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
Frequently asked
Is Cancún or San Antonio warmer in November?
Cancún runs warmer by day in November. Cancún averages highs of 82°F (highs n=240 days); San Antonio averages highs of 72°F (highs n=240 days) (ERA5 2018–2025). Historical averages, not a forecast.
Does it rain more in Cancún or San Antonio in November?
Cancún is measurably wetter than San Antonio. Days with measurable rain: Cancún 58%, San Antonio 30% (n=240 and n=240 days). ERA5 2018–2025; historical, not a forecast.
Which is sunnier in November, Cancún or San Antonio?
San Antonio edges out Cancún for sun in November: 33% clear historically versus 15% (8-year ERA5 average, a 18-point gap). Cancún also sees measurably more rain than San Antonio this month (58% vs 30% of days). Both are viable — San Antonio is the safer bet.
Compare Cancún 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.