ERA5 almanac comparison — 8 years of real data
Cancún vs Laguna Beach: weather in May
Essentially a tie in May: Cancún is 21% clear historically, Laguna Beach is 21% clear (8-year ERA5 average) — within the noise. Avg high 87°F vs 70°F. Cancún also sees measurably more rain than Laguna Beach this month (45% vs 12% of days). Pick based on flight time or price, not weather — the weather won't decide this one for you.
Cancún
MX
- Clear days, May
- 21%
- Sample size
- n=248 days
- Avg high
- 87°F
- Early May (1st–15th)
- 24%
- Late May (16th–end)
- 18%
- Rain frequency
- 45% of days
Laguna Beach
CA
- Clear days, May
- 21%
- Sample size
- n=248 days
- Avg high
- 70°F
- Early May (1st–15th)
- 26%
- Late May (16th–end)
- 16%
- Rain frequency
- 12% of days
Compare Cancún vs Laguna Beach 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.