ERA5 almanac comparison — 8 years of real data
Savannah vs St. John, USVI: weather in April
Savannah edges out St. John, USVI for sun in April: 44% clear historically versus 20% (8-year ERA5 average, a 24-point gap). Both are viable — Savannah is the safer bet.
Savannah
GA
- Clear days, April
- 44%
- Sample size
- n=240 days
- Avg high
- 77°F
- Early April (1st–15th)
- 35%
- Late April (16th–end)
- 52%
- Rain frequency
- 27% of days
St. John, USVI
VI
- Clear days, April
- 20%
- Sample size
- n=240 days
- Avg high
- 76°F
- Early April (1st–15th)
- 22%
- Late April (16th–end)
- 18%
- Rain frequency
- 37% of days
Frequently asked
Is Savannah or St. John, USVI warmer in April?
Savannah runs warmer by day in April. Savannah averages highs of 77°F (highs n=240 days); St. John, USVI averages highs of 76°F (highs n=240 days) (ERA5 2018–2025). Historical averages, not a forecast.
Does it rain more in Savannah or St. John, USVI in April?
Days with measurable rain: Savannah 27%, St. John, USVI 37% (n=240 and n=240 days). ERA5 2018–2025; historical, not a forecast.
Which is sunnier in April, Savannah or St. John, USVI?
Savannah edges out St. John, USVI for sun in April: 44% clear historically versus 20% (8-year ERA5 average, a 24-point gap). Both are viable — Savannah is the safer bet.
Compare Savannah vs St. John, USVI 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.