ERA5 almanac comparison — 8 years of real data
Newport Beach vs Sea Island: weather in January
Newport Beach edges out Sea Island for sun in January: 8% clear historically versus 2% (8-year ERA5 average, a 6-point gap). Both are viable — Newport Beach is the safer bet.
Newport Beach
CA
- Clear days, January
- 8%
- Sample size
- n=248 days
- Avg high
- 64°F
- Early January (1st–15th)
- 6%
- Late January (16th–end)
- 9%
- Rain frequency
- 17% of days
Sea Island
GA
- Clear days, January
- 2%
- Sample size
- n=248 days
- Avg high
- 60°F
- Early January (1st–15th)
- 3%
- Late January (16th–end)
- 2%
- Rain frequency
- 24% of days
Frequently asked
Is Newport Beach or Sea Island warmer in January?
Newport Beach runs warmer by day in January. Newport Beach averages highs of 64°F (highs n=248 days); Sea Island averages highs of 60°F (highs n=248 days) (ERA5 2018–2025). Historical averages, not a forecast.
Does it rain more in Newport Beach or Sea Island in January?
Days with measurable rain: Newport Beach 17%, Sea Island 24% (n=248 and n=248 days). ERA5 2018–2025; historical, not a forecast.
Which is sunnier in January, Newport Beach or Sea Island?
Newport Beach edges out Sea Island for sun in January: 8% clear historically versus 2% (8-year ERA5 average, a 6-point gap). Both are viable — Newport Beach is the safer bet.
Compare Newport Beach 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.