ERA5 almanac comparison — 8 years of real data
Dallas vs Sea Island: weather in August
Dallas is the clear winner for sun in August: 54% of days historically clear versus just 7% in Sea Island — a 47-point gap across 8 years of ERA5 data. Sea Island also sees measurably more rain than Dallas this month (66% vs 25% of days). This isn't close.
Dallas
TX
- Clear days, August
- 54%
- Sample size
- n=248 days
- Avg high
- 96°F
- Early August (1st–15th)
- 60%
- Late August (16th–end)
- 48%
- Rain frequency
- 25% of days
Sea Island
GA
- Clear days, August
- 7%
- Sample size
- n=248 days
- Avg high
- 85°F
- Early August (1st–15th)
- 6%
- Late August (16th–end)
- 8%
- Rain frequency
- 66% of days
Frequently asked
Is Dallas or Sea Island warmer in August?
Dallas runs warmer by day in August. Dallas averages highs of 96°F (highs n=248 days); Sea Island averages highs of 85°F (highs n=248 days) (ERA5 2018–2025). Historical averages, not a forecast.
Does it rain more in Dallas or Sea Island in August?
Sea Island is measurably wetter than Dallas. Days with measurable rain: Dallas 25%, Sea Island 66% (n=248 and n=248 days). ERA5 2018–2025; historical, not a forecast.
Which is sunnier in August, Dallas or Sea Island?
Dallas is the clear winner for sun in August: 54% of days historically clear versus just 7% in Sea Island — a 47-point gap across 8 years of ERA5 data. Sea Island also sees measurably more rain than Dallas this month (66% vs 25% of days). This isn't close.
Compare Dallas vs Sea Island 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.