ERA5 almanac comparison — 8 years of real data
Costa Rica — Guanacaste vs Puerto Vallarta: weather in November
Puerto Vallarta is the clear winner for sun in November: 77% of days historically clear versus just 18% in Costa Rica — Guanacaste — a 59-point gap across 8 years of ERA5 data. Costa Rica — Guanacaste also sees measurably more rain than Puerto Vallarta this month (62% vs 9% of days). This isn't close.
Costa Rica — Guanacaste
CR
- Clear days, November
- 18%
- Sample size
- n=240 days
- Avg high
- 86°F
- Early November (1st–15th)
- 10%
- Late November (16th–end)
- 25%
- Rain frequency
- 62% of days
Puerto Vallarta
MX
- Clear days, November
- 77%
- Sample size
- n=240 days
- Avg high
- 84°F
- Early November (1st–15th)
- 72%
- Late November (16th–end)
- 82%
- Rain frequency
- 9% of days
Compare Costa Rica — Guanacaste vs Puerto Vallarta 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.