SeasonScore
Charleston, United States
Photo: David Shankbone · CC BY 2.0

United States

Charleston in May

🌷 Spring

Warm, a little humid and some showers.

🎒 Pack: sunglasses & hat

Best months: Mar (9.2), Apr (9.2), Nov (9.1)

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Why May scores 9.0What goes into the score

How it works
🌡️ 29° / 19°C🌧️ 94 mm💧 dew pt 18°🍃 PM2.5 8
  • Weather comfort50%8.7
    • ✓Warm (28.7°C highs / 18.7°C lows)
    • ✓Humid (dew point 17.6°C)
    • ✓Mostly dry (~94 mm rain)
  • Air quality20%9.5
    • ✓Good (within WHO guideline) (PM2.5 ~8 µg/m³)
  • Seasonal hazards20%10.0
    • ·No notable seasonal hazards
  • Safety baseline10%7.5
    • ·Increased caution
Compare monthsPut May side by side with another month
MayMar
Score9.0 Excellent9.2 Excellent
Season🌷 Spring🌷 Spring
High / low29° / 19°21° / 10°
Rain94 mm74 mm
Humiditydew pt 18°dew pt 11°
PM2.58 µg/m³9 µg/m³

Typical-month data: NASA POWER (MERRA-2 reanalysis) 2015–2024 (modelled, not a forecast).

Holidays & crowdsMay 2027

Long weekend

There's at least one long weekend. Domestic travel picks up and popular spots get busier over those days.

  • Memorial Day 29–31 May · 3 days off in a row

National holidays only; regional holidays and school breaks aren't included. Source: holidays (open-source public-holiday calendar).

Explore CharlestonEvents, sights, food & souvenirs

Check event dates locally

A historic port city in South Carolina known for antebellum architecture, Lowcountry cooking and a complex history of slavery and the Civil War.

Events in May
Spoleto Festival USADate variesUsually late May to early June

A major performing arts festival of music, opera, theatre and dance.

Why go: Popular performances sell out ahead.

Where: Venues across the city

Coming up later

Charleston Wine + FoodDate variesUsually early March

A food festival featuring Southern chefs and tastings.

Why go: Events are ticketed.

Where: Venues across the city

Cooper River Bridge RunDate variesUsually late March or early April

A huge 10K race over the Arthur Ravenel Jr. Bridge.

Why go: Traffic disruptions around the route.

Where: Ravenel Bridge to downtown