Temperature
Warm by day, warm at night.
84°Ftypical September high
Typical range
September climate
September in Sea Island
United States · North America
Warm days and some sun. Heavier storm-season rain and humid air are the main drawbacks.
Some tradeoffs
Late
Daytime high
84°F
Lows around 73°F
Rain
Frequent rain
Sun
10 h/day
Air feel
Very humid
When to visit
Month-by-month fit
Best
Precipitation
Rain is frequent. About 15 wet days, more than in most months.
50%wet-day frequency
AmountWet-day chance
Sunshine
Plenty of sun this month.
9.9 hSeptember sunshine
Heat & humidity by month
Very humid air is a major factor this month.
78%September Heat feel
Easy airWarm airHot airHumid airVery humid air
Hourly temperature pattern
In September, afternoons feel about 86° and nights feel near 78°.
Very coldColdCoolComfortableWarmHotNight hours
Clear sky
Partly cloudy skies this month.
46%September Clear sky
Clear skyCloud
Wind pattern
Calm winds are typical in September.
8 mphSeptember Light breeze
More detailIncludes daypart comfort
Typical September day
September late afternoons are around 83°F, easing to about 79°F in early evening.
Avg temp Typical range
Morning77°F
Feels 80°F
Rain26%
Cloud54%
Humid airVery high
Sun intensityLow
Best windowMidday82°F
Feels 85°F
Rain34%
Cloud58%
Humid airVery high
Sun intensityStrong
Late afternoon83°F
Feels 85°F
Rain38%
Cloud61%
Humid airVery high
Sun intensityModerate
Early evening79°F
Feels 83°F
Rain24%
Cloud60%
Humid airVery high
Sun intensityMinimal
Data tableView month-by-month numbers
View month-by-month numbers
| Month | High°F | Low°F | Rainin | Wet days | Sunh | Humidity% |
|---|---|---|---|---|---|---|
| Jan | 62 | 46 | 2.8 | 9 | 7.9 | 72 |
| Feb | 67 | 51 | 3.0 | 9 | 8.4 | 73 |
| Mar | 72 | 56 | 4.3 | 9 | 9.5 | 70 |
| Apr | 77 | 62 | 1.6 | 6 | 11.1 | 70 |
| May | 82 | 69 | 3.7 | 12 | 11.9 | 72 |
| Jun | 86 | 74 | 4.7 | 16 | 11.5 | 78 |
| Jul | 89 | 77 | 5.4 | 21 | 11.8 | 79 |
| Aug | 87 | 77 | 8.7 | 21 | 11.3 | 81 |
| Sep | 84 | 73 | 5.0 | 15 | 9.9 | 80 |
| Oct | 77 | 64 | 2.5 | 8 | 9.5 | 76 |
| Nov | 71 | 56 | 2.3 | 7 | 8.6 | 75 |
| Dec | 65 | 51 | 2.4 | 6 | 7.3 | 76 |
Similar climates
Similar
Similar climatePalermoItalySimilar climateHong KongChinaSimilar climateMiamiUnited StatesSimilar climateSyracuseItaly
Want a side-by-side climate view? Compare Sea Island with Palermo.
Climate data notePlanning guidance, not a forecast
Typical monthly values are based on long-term climate records. Useful for planning, not a forecast. Check the weather before you travel.
Sunshine: source type is not yet identified at metric level.
Local microclimates can vary by beach, neighborhood, trail, or elevation.
Last updated: Jul 31, 2026
Data & methodology