ERA5 almanac comparison — 8 years of real data
Hudson Valley vs St. Martin: weather in April
St. Martin edges out Hudson Valley for sun in April: 24% clear historically versus 4% (8-year ERA5 average, a 20-point gap). Both are viable — St. Martin is the safer bet.
What you are reading: 8-year historical averages, not a forecast.
Either destination can still surprise you this specific April. For this
week’s actual forecast, each destination links to its live page below.
Hudson Valley
NY
- Clear days, April
- 4%
- Sample size
- n=240 days
- Avg high
- 59°F
- Early April (1st–15th)
- 5%
- Late April (16th–end)
- 3%
St. Martin
SX
- Clear days, April
- 24%
- Sample size
- n=240 days
- Avg high
- 76°F
- Early April (1st–15th)
- 29%
- Late April (16th–end)
- 18%
Compare Hudson Valley vs St. Martin 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.