Charleston in May
Find out everything about the water temperature in Charleston in May. Average, minimum and maximum recorded temperatures as well as daily temperature in May for the last two years. Compare the current month's sea temperature data with other months of the year.
Water temperature in May
Minimum:
67.0 °F
Average:
74.1 °F
Maximum:
82.9 °F
Sea water temperature in Charleston in May
In the city of Charleston, the month of May is a great time for swimming. The minimum recorded temperature during this month was 67.0°F on May 1, 2018, with an average temperature being 74.1°F and a maximum temperature reaching 82.9°F on May 31, 2019.
| Date | 10 years average | 2024 | 2023 |
|---|---|---|---|
| May 1 | 70.7°F | 70.3°F | 72.3°F |
| May 2 | 70.7°F | 70.7°F | 71.3°F |
| May 3 | 71.0°F | 71.8°F | 71.4°F |
| May 4 | 71.8°F | 72.9°F | 70.8°F |
| May 5 | 71.9°F | 73.9°F | 68.8°F |
| May 6 | 72.3°F | 75.5°F | 69.0°F |
| May 7 | 72.6°F | 74.8°F | 69.5°F |
| May 8 | 72.5°F | 74.8°F | 69.7°F |
| May 9 | 72.4°F | 75.8°F | 70.5°F |
| May 10 | 72.6°F | 75.9°F | 71.2°F |
| May 11 | 72.4°F | 75.7°F | 72.0°F |
| May 12 | 73.1°F | 76.4°F | 72.8°F |
| May 13 | 73.2°F | 76.4°F | 72.6°F |
| May 14 | 73.3°F | 76.5°F | 73.0°F |
| May 15 | 73.4°F | 73.5°F | 73.8°F |
| May 16 | 73.6°F | 75.4°F | 73.5°F |
| May 17 | 73.7°F | 74.6°F | 74.8°F |
| May 18 | 74.0°F | 75.2°F | 75.5°F |
| May 19 | 74.5°F | 75.4°F | 75.7°F |
| May 20 | 74.9°F | 75.4°F | 75.0°F |
| May 21 | 75.1°F | 76.6°F | 73.3°F |
| May 22 | 75.5°F | 74.9°F | 74.4°F |
| May 23 | 75.8°F | 75.7°F | 74.5°F |
| May 24 | 76.0°F | 75.9°F | 74.4°F |
| May 25 | 76.3°F | 76.5°F | 74.4°F |
| May 26 | 76.5°F | 76.9°F | 74.0°F |
| May 27 | 76.9°F | 76.9°F | 74.1°F |
| May 28 | 77.4°F | 78.4°F | 74.3°F |
| May 29 | 77.5°F | 79.4°F | 73.3°F |
| May 30 | 77.4°F | 78.7°F | 71.0°F |
| May 31 | 77.6°F | 78.9°F | 70.3°F |
In Charleston, the months May through October offer comfortable swimming conditions, which amounts to 156 swimming days.
The warmest water in Charleston was recorded on July 19, 2024, reaching a 87.3°F. While the coldest temperature occurred on December 29, 2022, dipping to 47.1°F. The average readings by season are 57.8°F in Winter, 67.1°F in Spring, 82.7°F in Summer, and 73.8°F in Autumn.
The average temperature in May is slightly warmer than April's average of 66.4°F. And in June, the temperature is expected to rise further, potentially reaching an average of 80.2°F.