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SunnyDays

ERA5 almanac comparison — 8 years of real data

Kiawah Island vs The Hamptons: weather in July

The Hamptons is the clear winner for sun in July: 44% of days historically clear versus just 7% in Kiawah Island — a 37-point gap across 8 years of ERA5 data. Kiawah Island also sees measurably more rain than The Hamptons this month (70% vs 39% of days). This isn't close.

What you are reading: 8-year historical averages, not a forecast. Either destination can still surprise you this specific July. For the actual forecast right now, each destination links to its live page below.

Kiawah Island

SC

Clear days, July
7%
Sample size
n=248 days
Avg high
87°F
Early July (1st–15th)
8%
Late July (16th–end)
7%
Rain frequency
70% of days
See the live forecast →

The Hamptons

NY

Clear days, July
44%
Sample size
n=248 days
Avg high
78°F
Early July (1st–15th)
47%
Late July (16th–end)
41%
Rain frequency
39% of days

Frequently asked

Is Kiawah Island or The Hamptons warmer in July?

Kiawah Island runs warmer by day in July. Kiawah Island averages highs of 87°F (highs n=248 days); The Hamptons averages highs of 78°F (highs n=248 days) (ERA5 2018–2025). Historical averages, not a forecast.

Does it rain more in Kiawah Island or The Hamptons in July?

Kiawah Island is measurably wetter than The Hamptons. Days with measurable rain: Kiawah Island 70%, The Hamptons 39% (n=248 and n=248 days). ERA5 2018–2025; historical, not a forecast.

Which is sunnier in July, Kiawah Island or The Hamptons?

The Hamptons is the clear winner for sun in July: 44% of days historically clear versus just 7% in Kiawah Island — a 37-point gap across 8 years of ERA5 data. Kiawah Island also sees measurably more rain than The Hamptons this month (70% vs 39% of days). This isn't close.

Compare Kiawah Island vs The Hamptons 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.