Mount Pleasant in Summer
In summer (June, July and August), Mount Pleasant sees average daytime highs around 83°F and overnight lows near 77°F, with 16.0 in of rain over about 47 wet days across the season. It is the warmest season of the year and the wettest season of the year.
Across summer, daytime highs hold fairly steady around 83°F. The sky is clear or mostly clear about 33% of the time across summer, and the air most often feels oppressive.
Summer is Mount Pleasant's 3rd-best season to visit on our travel score. For the whole year in context, see Mount Pleasant's year-round climate.
- Avg daytime high
- 83°F
- warmest season of the year
- Avg overnight low
- 77°F
- Rainfall
- 16.0 in
- 47 wet days
- Avg wind
- 10 mph
- Travel score
- 5.2
- 3rd-best season
- Months
- Jun · Jul · Aug
Temperature in Mount Pleasant in Summer
Across summer, daytime highs hold fairly steady around 83°F.
A typical summer day in Mount Pleasant reaches about 83°F and drops to 77°F overnight. The warmest of the three months is July, the coolest June.
How summer really feels in Mount Pleasant
Once humidity and wind are folded in, summer brings about 51 days that feel above 90°F and 0 that feel at or below 32°F.
The story in summer is heat — humidity pushes the afternoon "feels like" well above the raw temperature.
Mount Pleasant weather by month
How the three summer months (June, July and August) compare with the rest of the year — the season's months are highlighted.
| Month | High / Low (°F) | Rainfall (inches) | Wet days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|
| Jan | 58° / 49° | 3.7 | 9.6 | 10.1 | 4.5 |
| Feb | 59° / 50° | 3.8 | 9 | 10.8 | 4.7 |
| Mar | 63° / 55° | 3.5 | 8.3 | 11.8 | 6.0 |
| Apr | 69° / 62° | 3.0 | 7 | 12.8 | 7.0 |
| May | 75° / 69° | 2.5 | 8.2 | 13.7 | 7.3 |
| Jun | 81° / 76° | 4.6 | 13.9 | 14.1 | 5.9 |
| Jul | 84° / 78° | 4.9 | 15 | 13.9 | 5.0 |
| Aug | 83° / 78° | 6.5 | 18.2 | 13.2 | 4.8 |
| Sep | 80° / 74° | 6.1 | 14.2 | 12.2 | 6.0 |
| Oct | 74° / 66° | 4.5 | 8.6 | 11.2 | 7.3 |
| Nov | 66° / 57° | 3.0 | 7.5 | 10.3 | 6.6 |
| Dec | 61° / 52° | 4.0 | 9.6 | 9.9 | 5.2 |
Cloud cover in Summer
The sky is clear or mostly clear about 33% of the time across summer.
Chance of precipitation in Summer
Mount Pleasant gets around 16.0 in of rain over 47 wet days across summer. The line is the day-by-day chance of measurable precipitation.
Humidity in Summer
Most of summer feels oppressive — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Summer
Winds average 10 mph across summer.
Sunrise & sunset in Summer
Daylight runs from about 14 hours in early June to 12 h 42 min by late August. The lit band spans sunrise to sunset each day.
Solar energy in Summer
Average shortwave solar energy reaching the ground each day across summer, about 6.0 kWh/m².
Hazard calendar for Mount Pleasant
In summer, Mount Pleasant overlaps its atlantic hurricane season. The full year is below, with each hazard's peak months called out.
Mount Pleasant sits in the Atlantic hurricane belt; the season peaks August–October.
Is summer a good time to visit Mount Pleasant?
Our two travel scores rate summer for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal), averaged across the three months.
summer is a reasonable time to visit Mount Pleasant for sightseeing. The water and warmth also suit a beach or pool day.
What to pack for Mount Pleasant in Summer
From summer's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In summer, Mount Pleasant sees daytime highs around 83°F and nights near 77°F. Pack light clothes, rain gear and sun protection. About 47 days see rain.
Sea temperature near Mount Pleasant in Summer
The nearest coast averages about 82°F across summer — the other half of the beach question. The full-year curve and swim-comfort zones are below.
The sea at the nearest coast (about 12 mi away) is warmest in August at about 83°F and coldest in February near 60°F.
It's comfortable for a long swim from Apr 25 to Nov 19 — about 6.9 months when the water holds above 68°F.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sea temperature (°F) | 61 | 60 | 61 | 66 | 73 | 80 | 83 | 83 | 81 | 75 | 68 | 64 |
| Comfort | Cool | Cool | Cool | Cool | Refreshing | Warm | Tropical | Tropical | Warm | Warm | Refreshing | Cool |
| Sea temperature (°F) | Comfort | |
|---|---|---|
| Jan | 61 | Cool |
| Feb | 60 | Cool |
| Mar | 61 | Cool |
| Apr | 66 | Cool |
| May | 73 | Refreshing |
| Jun | 80 | Warm |
| Jul | 83 | Tropical |
| Aug | 83 | Tropical |
| Sep | 81 | Warm |
| Oct | 75 | Warm |
| Nov | 68 | Refreshing |
| Dec | 64 | Cool |
UV index in Mount Pleasant in Summer
Clear-sky midday UV across summer averages around 9 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Mount Pleasant peaks around July 13 at about 10 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 19 at about 3 (moderate).
The index reaches 3 or more — the level where the WHO recommends sun protection — in 11 months of the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 4 | 5 | 7 | 7 | 8 | 9 | 10 | 9 | 8 | 6 | 4 | 3 |
| Level | Moderate | Moderate | High | Very high | Very high | Very high | Very high | Very high | Very high | High | Moderate | Moderate |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 4 | Moderate |
| Feb | 5 | Moderate |
| Mar | 7 | High |
| Apr | 7 | Very high |
| May | 8 | Very high |
| Jun | 9 | Very high |
| Jul | 10 | Very high |
| Aug | 9 | Very high |
| Sep | 8 | Very high |
| Oct | 6 | High |
| Nov | 4 | Moderate |
| Dec | 3 | Moderate |
Air quality in Mount Pleasant in Summer
Average fine-particle pollution (PM2.5) through the year — so you can see where summer falls, not just the annual average.
Air quality in Mount Pleasant is worst in March — around 21 µg/m³ PM2.5 (moderate), about 3.5× the cleanest month (December, 6 µg/m³).
Modeled monthly averages (CAMS reanalysis, 2015–2024).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PM2.5 (µg/m³) | 8 | 12 | 21 | 12 | 11 | 14 | 16 | 14 | 9 | 6 | 7 | 6 |
| Level | Good | Moderate | Moderate | Moderate | Good | Moderate | Moderate | Moderate | Good | Good | Good | Good |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 8 | Good |
| Feb | 12 | Moderate |
| Mar | 21 | Moderate |
| Apr | 12 | Moderate |
| May | 11 | Good |
| Jun | 14 | Moderate |
| Jul | 16 | Moderate |
| Aug | 14 | Moderate |
| Sep | 9 | Good |
| Oct | 6 | Good |
| Nov | 7 | Good |
| Dec | 6 | Good |
Where is Mount Pleasant?
Mount Pleasant sits at 32.8°N, 79.9°W, 10 ft above sea level, in United States. The nearest listed city is Charleston, 4.3 mi away.
Topography around Mount Pleasant
How much the land rises and falls, and what covers it, within 2, 10 and 50 miles of Mount Pleasant.
Within 2 miles, the terrain around Mount Pleasant has only modest variations in elevation — a maximum elevation change of 66 ft around an average of 16 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 131 ft; within 50 miles, only modest variations in elevation — a maximum elevation change of 226 ft.
The land around Mount Pleasant is covered by trees (42%), water (20%) and wetland (20%) within 2 miles, water (44%) and trees (27%) within 10 miles, and trees (50%) and water (38%) within 50 miles.
United States travel facts
- Power plugs
- Type A / B
- 120 V · 60 Hz
- Prices
- ≈ 100% of US
- price level, 2025
- GDP per capita
- $90,027
- 2025
- Happiness
- 6.8 / 10
- World Happiness, 2025
- Safe drinking water
- 98%
- of population, 2024
- Homicide rate
- 5.8
- per 100k, 2023
- Road deaths
- 12.7
- per 100k/yr, 2019
- Income group
- High
- World Bank
- Religion
Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.
Data sources
Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Mount Pleasant (32.7941°, -79.8626°, elevation 10 ft), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google.