Bay
Charleston Harbor
South Carolina · United States · Pacific Ocean
32.7638, -79.8973 · Charleston, 4 km
- 28°Sea · August
- 32°High · July
- 8.7 hSunshine · June
Your month at the beach
Charleston Harbor in January
- 14°CAir, daytime high4°C at night
- 16°CSea temperature
- 5.4 hSunshine a day
- 10 daysRainy days in the month61 mm in total
- 12 km/hAverage wind
Averages for 1991–2020. A rainy day is a day with at least 1 mm of rain.
Charleston Harbor in February
- 16°CAir, daytime high6°C at night
- 15°CSea temperature
- 5.6 hSunshine a day
- 9 daysRainy days in the month84 mm in total
- 12 km/hAverage wind
Averages for 1991–2020. A rainy day is a day with at least 1 mm of rain.
Charleston Harbor in March
- 20°CAir, daytime high9°C at night
- 16°CSea temperature
- 6.7 hSunshine a day
- 10 daysRainy days in the month84 mm in total
- 12 km/hAverage wind
Averages for 1991–2020. A rainy day is a day with at least 1 mm of rain.
Charleston Harbor in April
- 24°CAir, daytime high13°C at night
- 19°CSea temperature
- 8.4 hSunshine a day
- 9 daysRainy days in the month82 mm in total
- 12 km/hAverage wind
Averages for 1991–2020. A rainy day is a day with at least 1 mm of rain.
Charleston Harbor in May
- 28°CAir, daytime high18°C at night
- 23°CSea temperature
- 8.6 hSunshine a day
- 12 daysRainy days in the month92 mm in total
- 11 km/hAverage wind
Averages for 1991–2020. A rainy day is a day with at least 1 mm of rain.
Charleston Harbor in June
- 31°CAir, daytime high22°C at night
- 26°CSea temperature
- 8.7 hSunshine a day
- 18 daysRainy days in the month140 mm in total
- 10 km/hAverage wind
Averages for 1991–2020. A rainy day is a day with at least 1 mm of rain.
Charleston Harbor in July
- 32°CAir, daytime high24°C at night
- 28°CSea temperature
- 8.5 hSunshine a day
- 21 daysRainy days in the month147 mm in total
- 9 km/hAverage wind
Averages for 1991–2020. A rainy day is a day with at least 1 mm of rain.
Charleston Harbor in August
- 31°CAir, daytime high23°C at night
- 28°CSea temperature
- 7.5 hSunshine a day
- 20 daysRainy days in the month170 mm in total
- 9 km/hAverage wind
Averages for 1991–2020. A rainy day is a day with at least 1 mm of rain.
Charleston Harbor in September
- 29°CAir, daytime high21°C at night
- 27°CSea temperature
- 6.9 hSunshine a day
- 14 daysRainy days in the month119 mm in total
- 10 km/hAverage wind
Averages for 1991–2020. A rainy day is a day with at least 1 mm of rain.
Charleston Harbor in October
- 25°CAir, daytime high15°C at night
- 24°CSea temperature
- 6.7 hSunshine a day
- 9 daysRainy days in the month105 mm in total
- 10 km/hAverage wind
Averages for 1991–2020. A rainy day is a day with at least 1 mm of rain.
Charleston Harbor in November
- 20°CAir, daytime high9°C at night
- 20°CSea temperature
- 6.1 hSunshine a day
- 8 daysRainy days in the month69 mm in total
- 11 km/hAverage wind
Averages for 1991–2020. A rainy day is a day with at least 1 mm of rain.
Charleston Harbor in December
- 16°CAir, daytime high6°C at night
- 18°CSea temperature
- 5.2 hSunshine a day
- 10 daysRainy days in the month92 mm in total
- 11 km/hAverage wind
Averages for 1991–2020. A rainy day is a day with at least 1 mm of rain.
The beach itself
- 100Places to stay within 5 kmHotels, guest houses, apartments and campsites · OpenStreetMap
- 20 kmAirport: Charleston International Airport (CHS)In a straight line; by road it is further
No reliable information yet on: bathing water quality, wheelchair access, lifeguards.
January from 2020 to 2025
In January 2025 the sea averaged 10.8 °C — 5.4 °C below the 1991–2020 average.
1991–2020 average: 16.2 °C
1991–2020 average: 13.9 °C
Each bar is one year. Above the dashed line (the 1991–2020 average), that month was warmer than usual; below it, cooler.
February from 2020 to 2025
In February 2025 the sea averaged 12.1 °C — 3.4 °C below the 1991–2020 average.
1991–2020 average: 15.5 °C
1991–2020 average: 16.0 °C
Each bar is one year. Above the dashed line (the 1991–2020 average), that month was warmer than usual; below it, cooler.
March from 2020 to 2025
In March 2025 the sea averaged 14.7 °C — 1.6 °C below the 1991–2020 average.
1991–2020 average: 16.3 °C
1991–2020 average: 19.5 °C
Each bar is one year. Above the dashed line (the 1991–2020 average), that month was warmer than usual; below it, cooler.
April from 2020 to 2025
In April 2025 the sea averaged 20.3 °C — 1.4 °C above the 1991–2020 average.
1991–2020 average: 18.9 °C
1991–2020 average: 24.0 °C
Each bar is one year. Above the dashed line (the 1991–2020 average), that month was warmer than usual; below it, cooler.
May from 2020 to 2025
In May 2025 the sea averaged 24.1 °C — 1.2 °C above the 1991–2020 average.
1991–2020 average: 22.9 °C
1991–2020 average: 28.2 °C
Each bar is one year. Above the dashed line (the 1991–2020 average), that month was warmer than usual; below it, cooler.
June from 2020 to 2025
In June 2025 the sea averaged 27.2 °C — 0.8 °C above the 1991–2020 average.
1991–2020 average: 26.4 °C
1991–2020 average: 30.9 °C
Each bar is one year. Above the dashed line (the 1991–2020 average), that month was warmer than usual; below it, cooler.
July from 2020 to 2025
In July 2025 the sea averaged 29.1 °C — 0.8 °C above the 1991–2020 average.
1991–2020 average: 28.3 °C
1991–2020 average: 32.0 °C
Each bar is one year. Above the dashed line (the 1991–2020 average), that month was warmer than usual; below it, cooler.
August from 2020 to 2025
In August 2025 the sea averaged 28.7 °C — 0.3 °C above the 1991–2020 average.
1991–2020 average: 28.4 °C
1991–2020 average: 31.3 °C
Each bar is one year. Above the dashed line (the 1991–2020 average), that month was warmer than usual; below it, cooler.
September from 2020 to 2025
In September 2025 the sea averaged 26.2 °C — 0.9 °C below the 1991–2020 average.
1991–2020 average: 27.1 °C
1991–2020 average: 28.9 °C
Each bar is one year. Above the dashed line (the 1991–2020 average), that month was warmer than usual; below it, cooler.
October from 2020 to 2025
In October 2025 the sea averaged 22.4 °C — 1.6 °C below the 1991–2020 average.
1991–2020 average: 24.0 °C
1991–2020 average: 24.9 °C
Each bar is one year. Above the dashed line (the 1991–2020 average), that month was warmer than usual; below it, cooler.
November from 2020 to 2025
In November 2025 the sea averaged 17.9 °C — 2.3 °C below the 1991–2020 average.
1991–2020 average: 20.2 °C
1991–2020 average: 19.6 °C
Each bar is one year. Above the dashed line (the 1991–2020 average), that month was warmer than usual; below it, cooler.
December from 2020 to 2025
In December 2025 the sea averaged 14.3 °C — 3.7 °C below the 1991–2020 average.
1991–2020 average: 18.0 °C
1991–2020 average: 16.1 °C
Each bar is one year. Above the dashed line (the 1991–2020 average), that month was warmer than usual; below it, cooler.
When to go
1991–2020 averagesThe year at a glance
- Jan16°5 h61 mm
- Feb15°6 h84 mm
- Mar16°7 h84 mm
- Apr19°8 h82 mm
- May23°9 h92 mm
- Jun26°9 h140 mm
- Jul28°8 h147 mm
- Aug28°8 h170 mm
- Sep27°7 h119 mm
- Oct24°7 h105 mm
- Nov20°6 h69 mm
- Dec18°5 h92 mm
Each card is a month. The colour is the sea temperature, on the same scale as the map; in bold, the two best months for each.
Sea temperature
1991–2020 averagesClimate through the year
1991–2020 averagesRain
Sunshine
Sunshine hours are estimated from measured solar radiation, not observed directly.
Month by month
1991–2020 averagesEvery month at Charleston Harbor: air, sea, rain and sunshine. Averages for 1991–2020.
| Month | High°C | Low°C | Sea°C | Rainmm | Rainy daysdays | Sunshineh/day | Windkm/h |
|---|---|---|---|---|---|---|---|
| January | 14 | 4 | 16 | 61 | 10 | 5.4 | 12 |
| February | 16 | 6 | 15 | 84 | 9 | 5.6 | 12 |
| March | 20 | 9 | 16 | 84 | 10 | 6.7 | 12 |
| April | 24 | 13 | 19 | 82 | 9 | 8.4 | 12 |
| May | 28 | 18 | 23 | 92 | 12 | 8.6 | 11 |
| June | 31 | 22 | 26 | 140 | 18 | 8.7 | 10 |
| July | 32 | 24 | 28 | 147 | 21 | 8.5 | 9 |
| Augustwarmest sea | 31 | 23 | 28 | 170 | 20 | 7.5 | 9 |
| September | 29 | 21 | 27 | 119 | 14 | 6.9 | 10 |
| October | 25 | 15 | 24 | 105 | 9 | 6.7 | 10 |
| November | 20 | 9 | 20 | 69 | 8 | 6.1 | 11 |
| December | 16 | 6 | 18 | 92 | 10 | 5.2 | 11 |
Swipe sideways to see the other columns.
Photos
Photos shared by their authors on Wikimedia Commons, with its colours adjusted.
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Nearby destinations
About these numbers
Averages are for 1991–2020; the recent years (2020–2025) are what actually happened. Neither is today's weather.
| What | Where it comes from | Nearest measurement |
|---|---|---|
| Air, rain and sunshine | NASA POWER | 28 km away |
| Sea temperature | NOAA OISST v2.1, 1991–2020 | 16 km away |
| 2020–2025, month by month | NASA POWER · NOAA OISST v2.1 | 28 km away |
| Lifeguards and places to stay | OpenStreetMap | within 1–5 km |
| Nearest airport | OurAirports | straight-line distance |
| Image at the top | Sentinel-2 cloudless (EOX) | at this spot |
More about this place: Wikipedia See every data source →