ERA5 almanac comparison — 8 years of real data
Amelia Island vs Montréal: weather in September
Essentially a tie in September: Amelia Island is 22% clear historically, Montréal is 22% clear (8-year ERA5 average) — within the noise. Avg high 84°F vs 70°F. Amelia Island also sees measurably more rain than Montréal this month (62% vs 30% of days). Pick based on flight time or price, not weather — the weather won't decide this one for you.
Amelia Island
FL
- Clear days, September
- 22%
- Sample size
- n=240 days
- Avg high
- 84°F
- Early September (1st–15th)
- 17%
- Late September (16th–end)
- 27%
- Rain frequency
- 62% of days
Montréal
QC
- Clear days, September
- 22%
- Sample size
- n=240 days
- Avg high
- 70°F
- Early September (1st–15th)
- 28%
- Late September (16th–end)
- 17%
- Rain frequency
- 30% of days
Frequently asked
Is Amelia Island or Montréal warmer in September?
Amelia Island runs warmer by day in September. Amelia Island averages highs of 84°F (highs n=240 days); Montréal averages highs of 70°F (highs n=240 days) (ERA5 2018–2025). Historical averages, not a forecast.
Does it rain more in Amelia Island or Montréal in September?
Amelia Island is measurably wetter than Montréal. Days with measurable rain: Amelia Island 62%, Montréal 30% (n=240 and n=240 days). ERA5 2018–2025; historical, not a forecast.
Which is sunnier in September, Amelia Island or Montréal?
Essentially a tie in September: Amelia Island is 22% clear historically, Montréal is 22% clear (8-year ERA5 average) — within the noise. Avg high 84°F vs 70°F. Amelia Island also sees measurably more rain than Montréal this month (62% vs 30% of days). Pick based on flight time or price, not weather — the weather won't decide this one for you.
Compare Amelia Island vs Montréal 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.