Verdict: Good month
Charleston Weather in June
June runs warm in Charleston, with daily highs around 29°C (84°F) and nights near 23°C (73°F). It's also the wet side of the calendar: rain falls on about 17 days, so build flexibility into plans. Overall, June is a solid month to visit Charleston.
Average high
29°C / 84°F
Average low
23°C / 73°F
Rain days
~17
Precipitation
126 mm
What to pack for Charleston in June
- Summer clothes, plus one light layer for air-con and evenings
- High-SPF sunscreen, sunglasses, and a refillable water bottle
- Rain gear is non-negotiable — expect rain on roughly 17 days
- Comfortable walking shoes — every guide on this site assumes you'll use them
June against the rest of the year
Warmest in Charleston: Jul (31°C / 88°F) · Coolest: Jan (15°C / 59°F) · Wettest: Aug (~20 rain days)
15°
7°
Jan
17°
9°
Feb
20°
12°
Mar
23°
15°
Apr
26°
19°
May
29°
23°
Jun
31°
25°
Jul
30°
24°
Aug
28°
21°
Sep
24°
17°
Oct
20°
12°
Nov
16°
8°
Dec
Daily highs / lows in °C · bars show rain days per month · ERA5 climate normals (2020–2024)