ERA5 almanac comparison — 8 years of real data
Austin vs Martha's Vineyard: weather in August
Essentially a tie in August: Austin is 46% clear historically, Martha's Vineyard is 46% clear (8-year ERA5 average) — within the noise. Avg high 97°F vs 77°F. Pick based on flight time or price, not weather — the weather won't decide this one for you.
Austin
TX
- Clear days, August
- 46%
- Sample size
- n=248 days
- Avg high
- 97°F
- Early August (1st–15th)
- 49%
- Late August (16th–end)
- 43%
- Rain frequency
- 28% of days
Martha's Vineyard
MA
- Clear days, August
- 46%
- Sample size
- n=248 days
- Avg high
- 77°F
- Early August (1st–15th)
- 48%
- Late August (16th–end)
- 45%
- Rain frequency
- 35% of days
Frequently asked
Is Austin or Martha's Vineyard warmer in August?
Austin runs warmer by day in August. Austin averages highs of 97°F (highs n=248 days); Martha's Vineyard averages highs of 77°F (highs n=248 days) (ERA5 2018–2025). Historical averages, not a forecast.
Does it rain more in Austin or Martha's Vineyard in August?
Days with measurable rain: Austin 28%, Martha's Vineyard 35% (n=248 and n=248 days). ERA5 2018–2025; historical, not a forecast.
Which is sunnier in August, Austin or Martha's Vineyard?
Essentially a tie in August: Austin is 46% clear historically, Martha's Vineyard is 46% clear (8-year ERA5 average) — within the noise. Avg high 97°F vs 77°F. Pick based on flight time or price, not weather — the weather won't decide this one for you.
Compare Austin vs Martha's Vineyard 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.