ERA5 almanac comparison — 8 years of real data
Carmel-by-the-Sea vs Leavenworth: weather in September
Leavenworth is the clear winner for sun in September: 57% of days historically clear versus just 10% in Carmel-by-the-Sea — a 47-point gap across 8 years of ERA5 data. This isn't close.
Carmel-by-the-Sea
CA
- Clear days, September
- 10%
- Sample size
- n=240 days
- Avg high
- 67°F
- Early September (1st–15th)
- 9%
- Late September (16th–end)
- 10%
- Rain frequency
- 5% of days
Leavenworth
WA
- Clear days, September
- 57%
- Sample size
- n=240 days
- Avg high
- 78°F
- Early September (1st–15th)
- 66%
- Late September (16th–end)
- 48%
- Rain frequency
- 19% of days
Frequently asked
Is Carmel-by-the-Sea or Leavenworth warmer in September?
Leavenworth runs warmer by day in September. Carmel-by-the-Sea averages highs of 67°F (highs n=240 days); Leavenworth averages highs of 78°F (highs n=240 days) (ERA5 2018–2025). Historical averages, not a forecast.
Does it rain more in Carmel-by-the-Sea or Leavenworth in September?
Days with measurable rain: Carmel-by-the-Sea 5%, Leavenworth 19% (n=240 and n=240 days). ERA5 2018–2025; historical, not a forecast.
Which is sunnier in September, Carmel-by-the-Sea or Leavenworth?
Leavenworth is the clear winner for sun in September: 57% of days historically clear versus just 10% in Carmel-by-the-Sea — a 47-point gap across 8 years of ERA5 data. This isn't close.
Compare Carmel-by-the-Sea vs Leavenworth 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.