ERA5 almanac comparison — 8 years of real data
Charleston vs Door County: weather in April
Charleston is the clear winner for sun in April: 38% of days historically clear versus just 0% in Door County — a 38-point gap across 8 years of ERA5 data. This isn't close.
Charleston
SC
- Clear days, April
- 38%
- Sample size
- n=240 days
- Avg high
- 74°F
- Early April (1st–15th)
- 30%
- Late April (16th–end)
- 45%
- Rain frequency
- 26% of days
Door County
WI
- Clear days, April
- 0%
- Sample size
- n=240 days
- Avg high
- 48°F
- Early April (1st–15th)
- 1%
- Late April (16th–end)
- 0%
- Rain frequency
- 37% of days
Frequently asked
Is Charleston or Door County warmer in April?
Charleston runs warmer by day in April. Charleston averages highs of 74°F (highs n=240 days); Door County averages highs of 48°F (highs n=240 days) (ERA5 2018–2025). Historical averages, not a forecast.
Does it rain more in Charleston or Door County in April?
Days with measurable rain: Charleston 26%, Door County 37% (n=240 and n=240 days). ERA5 2018–2025; historical, not a forecast.
Which is sunnier in April, Charleston or Door County?
Charleston is the clear winner for sun in April: 38% of days historically clear versus just 0% in Door County — a 38-point gap across 8 years of ERA5 data. This isn't close.
Compare Charleston vs Door County 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.