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Weather in Sullivan's Island, SC
57°
Sullivan's Island, Wednesday, 21 October, 21:51
Clear. Feels like 57°. High 74°, low 49°.
Pressure30.12 inHg
Wind4.4 mph N 
Humidity82%
Visibility6.2 mi
Dew point52°
Wed, 21October
74°/49°
74°/49°Thu, 22October75°/50°
75°/50°Fri, 23October72°/48°
72°/48°Sat, 24October
73°/55°
73°/55°Sun, 25October
74°/56°
74°/56°Mon, 26October73°/56°
73°/56°Tue, 27October73°/55°
73°/55° | 00:00 | 02:00 | 04:00 | 06:00 | 08:00 | 10:00 | 12:00 | 14:00 | 16:00 | 18:00 | 20:00 | 22:00 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| | | | | | | | | | | | |
| Temperature | 72° | 55° | 52° | 49° | 55° | 62° | 69° | 70° | 65° | 61° | 59° | 57° |
| Feels like | 72° | 54° | 49° | 45° | 52° | 60° | 67° | 69° | 65° | 60° | 58° | 57° |
Pressure, inHg  | 30.12 | 30.12 | 30.12 | 30.12 | 30.12 | 30.12 | 30.12 | 30.12 | 30.12 | 30.12 | 30.12 | 30.12 |
| Wind, mph | 3.9 | 3.9 | 3.9 | 3.9 | 3.9 | 3.9 | 3.9 | 3.9 | 3.9 | 3.9 | 3.9 | 2 |
Humidity, %  | 43% | 43% | 43% | 43% | 43% | 43% | 43% | 43% | 43% | 43% | 43% | 82% |
| Precipitation | 0 in | 0 in | 0 in | 0 in | 0 in | 0 in | 0 in | 0 in | 0 in | 0 in | 0 in | 0 in |
| Visibility | — | — | — | — | — | — | — | — | — | — | — | 6.2 mi |
| 00:00 | 02:00 | 04:00 | 06:00 | 08:00 | 10:00 | 12:00 | 14:00 | 16:00 | 18:00 | 20:00 | 22:00 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| | | | | | | | | | | | |
| Temperature | 55° | 53° | 52° | 50° | 51° | 64° | 71° | 75° | 73° | 67° | 57° | 53° |
| Feels like | 54° | 51° | 50° | 49° | 49° | 63° | 69° | 73° | 72° | 66° | 56° | 52° |
| Pressure, inHg | 30.12 | 30.09 | 30.06 | 30.09 | 30.09 | 30.12 | 30.09 | 30.06 | 30.03 | 30.06 | 30.09 | 30.09 |
| Wind, mph | 1.7 | 2.1 | 2.5 | 2.5 | 2.3 | 1.8 | 2.8 | 2.7 | 1.6 | 0.8 | 1.1 | 1.1 |
| Humidity, % | 78% | 75% | 76% | 78% | 78% | 64% | 40% | 33% | 35% | 57% | 72% | 71% |
| Precipitation | 0 in | 0 in | 0 in | 0 in | 0 in | 0 in | 0 in | 0 in | 0 in | 0 in | 0 in | 0 in |
| Visibility | 6.2 mi | 6.2 mi | 6.2 mi | 6.2 mi | 6.2 mi | 6.2 mi | 6.2 mi | 6.2 mi | 6.2 mi | 6.2 mi | 6.2 mi | 6.2 mi |
| 00:00 | 02:00 | 04:00 | 06:00 | 08:00 | 10:00 | 12:00 | 14:00 | 16:00 | 18:00 | 20:00 | 22:00 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| | | | | | | | | | | | |
| Temperature | 51° | 49° | 51° | 48° | 49° | 61° | 67° | 72° | 69° | 65° | 61° | 59° |
| Feels like | 49° | 46° | 49° | 45° | 46° | 59° | 65° | 70° | 67° | 63° | 60° | 58° |
| Pressure, inHg | 30.09 | 30.09 | 30.09 | 30.12 | 30.18 | 30.21 | 30.21 | 30.18 | 30.18 | 30.18 | 30.21 | 30.24 |
| Wind, mph | 0.4 | 2.6 | 3.2 | 3.2 | 4.1 | 3.7 | 3.9 | 3.1 | 3.6 | 3.5 | 3.3 | 3.3 |
| Humidity, % | 74% | 75% | 70% | 71% | 69% | 57% | 40% | 34% | 35% | 46% | 66% | 69% |
| Precipitation | 0 in | 0 in | 0 in | 0 in | 0 in | 0 in | 0 in | 0 in | 0 in | 0 in | 0 in | 0 in |
| Visibility | 6.2 mi | 6.2 mi | 6.2 mi | 6.2 mi | 6.2 mi | 6.2 mi | 6.2 mi | 6.2 mi | 6.2 mi | 6.2 mi | 6.2 mi | 6.2 mi |
| 00:00 | 02:00 | 04:00 | 06:00 | 08:00 | 10:00 | 12:00 | 14:00 | 16:00 | 18:00 | 20:00 | 22:00 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| | | | | | | | | | | | |
| Temperature | 58° | 58° | 57° | 55° | 55° | 60° | 67° | 72° | 72° | 69° | 65° | 63° |
| Feels like | 57° | 57° | 56° | 54° | 54° | 59° | 66° | 71° | 71° | 68° | 64° | 62° |
| Pressure, inHg | 30.24 | 30.24 | 30.24 | 30.27 | 30.27 | 30.30 | 30.30 | 30.27 | 30.24 | 30.27 | 30.30 | 30.30 |
| Wind, mph | 4.6 | 5 | 5.3 | 5.7 | 6 | 5.5 | 5.7 | 5.8 | 6.1 | 5.2 | 4.8 | 4.7 |
| Humidity, % | 67% | 72% | 75% | 79% | 79% | 68% | 58% | 54% | 53% | 57% | 68% | 70% |
| Precipitation | 0 in | 0 in | 0 in | 0 in | 0 in | 0 in | 0 in | 0 in | 0 in | 0 in | 0 in | 0 in |
| Visibility | 6.2 mi | 6.2 mi | 6.2 mi | 6.2 mi | 6.2 mi | 6.2 mi | 6.2 mi | 6.2 mi | 6.2 mi | 6.2 mi | 6.2 mi | 6.2 mi |
| 00:00 | 02:00 | 04:00 | 06:00 | 08:00 | 10:00 | 12:00 | 14:00 | 16:00 | 18:00 | 20:00 | 22:00 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| | | | | | | | | | |  | |
| Temperature | 61° | 58° | 57° | 56° | 56° | 63° | 69° | 74° | 73° | 70° | 67° | 65° |
| Feels like | 59° | 57° | 56° | 55° | 55° | 62° | 68° | 74° | 72° | 70° | 66° | 65° |
| Pressure, inHg | 30.30 | 30.30 | 30.27 | 30.30 | 30.30 | 30.33 | 30.30 | 30.27 | 30.24 | 30.27 | 30.27 | 30.27 |
| Wind, mph | 5.2 | 5.5 | 5.7 | 5.4 | 5.5 | 5.5 | 5.9 | 7.3 | 7.6 | 7.3 | 6.5 | 7.8 |
| Humidity, % | 68% | 76% | 81% | 83% | 82% | 70% | 61% | 55% | 56% | 59% | 63% | 55% |
| Precipitation | 0 in | 0 in | 0 in | 0 in | 0 in | 0 in | 0 in | 0 in | 0 in | 0 in | 0 in | 0 in |
| Visibility | 6.2 mi | 6.2 mi | 6.2 mi | 6.2 mi | 6.2 mi | 6.2 mi | 6.2 mi | 6.2 mi | 6.2 mi | 6.2 mi | 6.2 mi | — |
| 00:00 | 02:00 | 04:00 | 06:00 | 08:00 | 10:00 | 12:00 | 14:00 | 16:00 | 18:00 | 20:00 | 22:00 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| | | | | | | | | | | | |
| Temperature | 73° | 61° | 59° | 56° | 61° | 66° | 71° | 72° | 70° | 67° | 65° | 64° |
| Feels like | 73° | 60° | 58° | 55° | 60° | 65° | 70° | 71° | 69° | 66° | 64° | 63° |
| Pressure, inHg | 30.24 | 30.24 | 30.24 | 30.24 | 30.24 | 30.24 | 30.24 | 30.24 | 30.24 | 30.24 | 30.24 | 30.24 |
| Wind, mph | 5.5 | 5.5 | 5.5 | 5.5 | 5.5 | 5.5 | 5.5 | 5.5 | 5.5 | 5.5 | 5.5 | 5.5 |
| Humidity, % | 50% | 50% | 50% | 50% | 50% | 50% | 50% | 50% | 50% | 50% | 50% | 50% |
| Precipitation | 0 in | 0 in | 0 in | 0 in | 0 in | 0 in | 0 in | 0 in | 0 in | 0 in | 0 in | 0 in |
| Visibility | — | — | — | — | — | — | — | — | — | — | — | — |
| 00:00 | 02:00 | 04:00 | 06:00 | 08:00 | 10:00 | 12:00 | 14:00 | 16:00 | 18:00 | 20:00 | 22:00 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| | | | | | | | | | | | |
| Temperature | 73° | 66° | 61° | 55° | 60° | 65° | 71° | 73° | 71° | 70° | 69° | 69° |
| Feels like | 73° | 66° | 60° | 54° | 59° | 65° | 70° | 72° | 71° | 70° | 70° | 69° |
| Pressure, inHg | 30.21 | 30.21 | 30.21 | 30.21 | 30.21 | 30.21 | 30.21 | 30.21 | 30.21 | 30.21 | 30.21 | 30.21 |
| Wind, mph | 5.1 | 5.1 | 5.1 | 5.1 | 5.1 | 5.1 | 5.1 | 5.1 | 5.1 | 5.1 | 5.1 | 5.1 |
| Humidity, % | 55% | 55% | 55% | 55% | 55% | 55% | 55% | 55% | 55% | 55% | 55% | 55% |
| Precipitation | 0 in | 0 in | 0 in | 0 in | 0 in | 0 in | 0 in | 0 in | 0 in | 0 in | 0 in | 0 in |
| Visibility | — | — | — | — | — | — | — | — | — | — | — | — |
Sun and moon today
Day length — 11 h 12 min
Sunrise — 07:27
Sunset — 18:39
Sunrise and sunset in local time
Waxing gibbous, 82%
Sunrise — —
Sunset — —
Sullivan's Island, SC climate by month
The annual average temperature in Sullivan's Island, SC is 66.9°. The warmest month is July (average high 86.8°), and the coldest is January (average low 44.1°). About 46.3 inches of precipitation fall per year, most of it in August (6.5 in). Figures are 60-year climate normals and records from 66 years of observations.
| Month | High | Low | Precipitation | Wet days | Record high | Record low |
|---|---|---|---|---|---|---|
| January | 57.6° | 44.1° | 3.3 in | 9 | 75.6° (2017) | 11.5° (2018) |
| February | 60.2° | 46.5° | 3.3 in | 8 | 79.7° (2025) | 21.6° (1996) |
| March | 65.7° | 52.2° | 3.4 in | 9 | 83.3° (1974) | 20.1° (1980) |
| April | 72.3° | 58.8° | 2.7 in | 7 | 88.9° (1967) | 37° (1983) |
| May | 78.9° | 66.6° | 3.0 in | 10 | 96.3° (2019) | 48.9° (2021) |
| June | 84.2° | 73.3° | 4.8 in | 15 | 96.8° (2010) | 58.1° (1984) |
| July | 86.8° | 76.7° | 5.0 in | 18 | 99.1° (2025) | 65.7° (1972) |
| August | 85.2° | 75.8° | 6.5 in | 19 | 97.3° (1999) | 64.6° (1986) |
| September | 81.7° | 71.8° | 4.8 in | 14 | 94.5° (2020) | 53.4° (1967) |
| October | 74.7° | 62.9° | 3.5 in | 8 | 90.5° (1986) | 41.5° (2017) |
| November | 66.9° | 54° | 2.6 in | 7 | 84° (1961) | 29.3° (1970) |
| December | 60.7° | 47.8° | 3.3 in | 8 | 76.3° (1978) | 14.9° (1989) |
Weather history
Temperature extremes over 66 years
October 21 temperatures in Sullivan's Island, SC over 66 years
high: 81.0° (1962)low: 45.1° (1989)
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