Charleston, SC weather in June
June in Charleston: warm and oppressively humid, with frequent rain. Highs 84°F, lows 74°F, about 11 days with rain.
- Normal high
- 84°F
- Normal low
- 74°F
- Wet days
- 11
- 4.8 in total
- Muggy days
- 26
- dew point 65°F+
How June changes from start to finish
| June 1 | June 30 | |
|---|---|---|
| Normal high | 82°F | 87°F |
| Normal low | 72°F | 76°F |
| Chance of a wet day | 31% | 36% |
| Sunrise / sunset | 6:12 am / 8:22 pm | 6:15 am / 8:31 pm |
| Daylight | 14.2 h | 14.3 h |
Chance of a wet day: average for the first and last 7 days of the month. Times are local clock time (Eastern Time).
A typical June day
- 6 am72°Fdew point 70°F
- 9 am80°Fdew point 70°F
- Noon85°Fdew point 69°F
- 3 pm86°Fdew point 69°F
- 6 pm82°Fdew point 69°F
- 9 pm76°Fdew point 70°F
NOAA hourly normals (local standard time) from Charleston Intl Airport (11 mi away); average wind 8 mph; clear or few clouds in 32% of daytime hours, mostly cloudy or overcast in 37%.
What kind of days to expect
- Comfortable dayshigh 65-80°F and dew point under 60°F1 of 30
- Beach dayshigh 80-95°F, under 0.05 in of rain, afternoon wind under 15 mph18 of 30
- Hot dayshigh 90°F or more5 of 30
- Muggy daysdaily mean dew point 65°F or more26 of 30
- Wet daysat least 0.01 in of rain or melted snow11 of 30
- Notable rainat least 0.10 in7 of 30
- Freezing nightslow 32°F or below0 of 30
Average days per June, counted from daily records for each year 1991-2020.
Rain in June
Normal precipitation is 4.8 in; a dry June brings about 2.6 in and a wet one about 7.2 in (25th and 75th percentiles). About 3 days bring half an inch or more, and about 2 an inch or more.
How June varies from year to year
- Warmest June, 1991-20201998: average high 92°F
- Coolest June1997: average high 80°F
- Wettest June1997: 11.8 in
- Driest June1993: 1.0 in
- Highest reading100°F (June 20, 2011)
- Lowest reading58°F (June 8, 1997)
From the station's daily records with NOAA quality flags removed; most recent date shown when a reading repeats.
June compared with May and July
| May | June | July | |
|---|---|---|---|
| Normal high | 79°F | 84°F | 88°F |
| Normal low | 68°F | 74°F | 77°F |
| Wet days | 7 | 11 | 12 |
| Comfortable days | 8 | 1 | 0 |
| Daylight | 13.8 h | 14.3 h | 14.1 h |
Highs change by +5°F from May and +4°F into July.
Nearby alternatives in June
- Warmer: Savannah, GA83 mi · high 90°F · 12 wet days
How Charleston ranks in June
- Normal high175th warmest of 378 cities; 4th of 5 in South Carolina
- Wet days208th driest of 378
- Comfortable days241st most of 340
What to pack for Charleston in June
- A rain jacket or umbrella – rain on about 11 days
- A swimsuit – about 18 beach days
- Sunglasses and sunscreen – about 14.3 hours of daylight and highs near 84°F
Heating and cooling
June has 0 heating degree days and 428 cooling degree days (base 65°F), 11% of the year's total heating and cooling demand.
Questions
How hot is Charleston in June?
The normal high is 84°F and the normal low is 74°F. From 1991 to 2020 the hottest June reading was 100°F (most recently on June 20, 2011).
Does it rain a lot in Charleston in June?
About 11 days in June have at least 0.01 in of precipitation, and the normal total is 4.9 in. The wettest June in 1991-2020 was in 1997 (11.8 in); the driest was in 1993 (1.0 in).
Is June a good time to visit Charleston?
June ranks 9th of 12 months on our comfort score for Charleston (51 out of 100). It has about 1 comfortable day and about 5 days at 90°F or hotter. The best month is April.
Where the numbers come from
- Temperature, rain and frost dates: Charleston City (USW00013782), 0.2 mi NNW of the city center, 10 ft . NOAA normals and daily records, 1991-2020.
- Snowfall, snow depth, humidity and wind by hour and cloud cover: Charleston Intl Airport (USW00013880), 11 mi NW of the city center, 40 ft . NOAA normals and daily records, 1991-2020.
- Daily humidity and wind: Charleston AFB/International Airport (722080-13880), 11 mi NW of the city center, 39 ft . Hourly observations, 1991-2020.