Weather Reports for the city of Harbor Island in South Carolina
snow
rain
temp
wind
humidity| Jan | Feb | Mar | Apr | May | Jun | |
|---|---|---|---|---|---|---|
| Average High (°F) | 60.7 | 64.9 | 70.9 | 77.5 | 83.8 | 89.2 |
| Average Low (°F) | 41.5 | 44.8 | 50.3 | 57.8 | 65.9 | 72.7 |
| All Time High (°F) | 82.9 | 87.1 | 90.0 | 91.0 | 102.9 | 102.2 |
| All Time Low (°F) | 18.0 | 21.0 | 27.0 | 33.1 | 46.0 | 60.6 |
| Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|
| Average High (°F) | 91.2 | 90.0 | 86.4 | 79.6 | 69.5 | 65.0 |
| Average Low (°F) | 75.3 | 74.9 | 70.4 | 61.3 | 49.2 | 45.6 |
| All Time High (°F) | 102.0 | 100.0 | 97.0 | 93.9 | 84.9 | 82.0 |
| All Time Low (°F) | 59.0 | 66.0 | 55.2 | 37.6 | 28.0 | 21.0 |
| Jan | Feb | Mar | Apr | May | Jun | |
|---|---|---|---|---|---|---|
| Percent of Rainy Days | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 |
| Avg. Rainfall (in) on Rainy Day | 0.3 | 0.4 | 0.4 | 0.5 | 0.4 | 0.5 |
| All Time Rainfall (in) on Rainy Day | 2.0 | 2.4 | 4.2 | 4.0 | 2.7 | 3.6 |
| 30 Day Rain Accumulation | 1.2 | 1.5 | 1.4 | 1.6 | 1.4 | 2.2 |
| All Time 30 Day Rain Accumulation | 5.5 | 12.2 | 7.9 | 8.0 | 7.3 | 11.7 |
| Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|
| Percent of Rainy Days | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 |
| Avg. Rainfall (in) on Rainy Day | 0.6 | 0.6 | 0.5 | 0.8 | 0.4 | 0.3 |
| All Time Rainfall (in) on Rainy Day | 5.3 | 3.6 | 4.2 | 14.0 | 2.0 | 2.9 |
| 30 Day Rain Accumulation | 2.6 | 3.0 | 2.0 | 1.6 | 1.1 | 1.4 |
| All Time 30 Day Rain Accumulation | 10.1 | 12.2 | 10.4 | 14.0 | 5.3 | 8.3 |
| Jan | Feb | Mar | Apr | May | Jun | |
|---|---|---|---|---|---|---|
| Percent of Days with Snowfall | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Avg. Snowfall Depth (in) | 1.3 | 0.4 | 0.0 | 0.0 | 0.0 | 0.0 |
| 30 Day Snowfall Total (in) | 0.1 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| All Time Snowfall Depth (in) | 3.4 | 0.6 | 0.0 | 0.0 | 0.0 | 0.0 |
| All Time 30 Day Snowfall Total (in) | 3.4 | 0.6 | 0.0 | 0.0 | 0.0 | 0.0 |
| Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|
| Percent of Days with Snowfall | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Avg. Snowfall Depth (in) | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| 30 Day Snowfall Total (in) | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| All Time Snowfall Depth (in) | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.1 |
| All Time 30 Day Snowfall Total (in) | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.1 |
Instead of using humidity directly we use dew point to measure what people commonly mean when saying it feels humid. Dew point is classified into 4 categories: Dry (under 25°F), Comfortable (25°F to 60°F), Muggy (60°F to 70°F) and Oppressive (70°F or greater). The table below shows the percentage of days with a dew point within a particular class.
| Jan | Feb | Mar | Apr | May | Jun | |
|---|---|---|---|---|---|---|
| Dry | 12.9 | 6.4 | 2.6 | 0.2 | 0.0 | 0.0 |
| Comfortable | 79.3 | 84.5 | 78.6 | 58.3 | 25.5 | 1.5 |
| Muggy | 7.8 | 9.2 | 18.8 | 38.8 | 55.7 | 27.8 |
| Oppressive | 0.0 | 0.0 | 0.0 | 2.6 | 18.8 | 70.7 |
| Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|
| Dry | 0.0 | 0.0 | 0.0 | 0.0 | 0.6 | 3.5 |
| Comfortable | 0.1 | 0.0 | 6.9 | 41.6 | 80.3 | 81.7 |
| Muggy | 7.1 | 8.3 | 34.2 | 40.8 | 16.5 | 14.1 |
| Oppressive | 92.8 | 91.7 | 58.9 | 17.6 | 2.6 | 0.7 |
The table below shows the distribution of average wind speeds in miles per hour for a given month or day. Wind speed may vary throughout a day and we show the average speed. Peak gusts or sustained maximum speeds may be significantly higher.
| Jan | Feb | Mar | Apr | May | Jun | |
|---|---|---|---|---|---|---|
| 10th | 2.2 | 2.2 | 2.6 | 2.5 | 2.2 | 1.9 |
| 25th | 3.5 | 3.7 | 4.0 | 4.0 | 3.4 | 3.4 |
| 50th | 5.5 | 5.7 | 6.0 | 6.1 | 5.7 | 5.3 |
| 75th | 8.1 | 8.1 | 8.7 | 8.6 | 7.5 | 7.1 |
| 90th | 11.2 | 11.3 | 11.5 | 11.3 | 9.9 | 9.2 |
| Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|
| 10th | 1.9 | 1.9 | 2.0 | 2.2 | 2.2 | 2.2 |
| 25th | 3.4 | 3.4 | 3.4 | 3.4 | 3.4 | 3.4 |
| 50th | 5.3 | 5.0 | 5.0 | 5.1 | 5.3 | 5.0 |
| 75th | 6.9 | 6.7 | 6.9 | 7.3 | 7.9 | 7.4 |
| 90th | 8.8 | 8.6 | 9.2 | 10.2 | 10.8 | 10.3 |
The table below shows the distribution of wind direction (wind coming out of a particular direction) for a given month or day. Wind direction may vary throughout a day and the computation accounts for all measured changes in direction througout the day or month.
| Jan | Feb | Mar | Apr | May | Jun | |
|---|---|---|---|---|---|---|
| North | 16.3 | 14.2 | 12.5 | 8.4 | 8.5 | 7.4 |
| NorthEast | 14.2 | 15.7 | 11.6 | 9.4 | 6.6 | 7.4 |
| East | 4.8 | 8.2 | 10.2 | 10.7 | 9.9 | 9.4 |
| SouthEast | 3.3 | 4.6 | 6.0 | 9.5 | 12.6 | 10.0 |
| South | 14.0 | 17.2 | 21.2 | 27.1 | 29.2 | 26.0 |
| SouthWest | 12.7 | 11.5 | 12.3 | 14.2 | 14.0 | 20.5 |
| West | 21.2 | 16.6 | 15.0 | 14.0 | 12.6 | 14.4 |
| NorthWest | 13.4 | 12.0 | 11.0 | 6.6 | 6.5 | 4.9 |
| Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|
| North | 5.0 | 10.5 | 22.7 | 22.3 | 28.9 | 20.7 |
| NorthEast | 6.0 | 12.5 | 20.7 | 21.5 | 23.5 | 17.1 |
| East | 7.9 | 11.7 | 11.6 | 9.8 | 5.9 | 4.9 |
| SouthEast | 9.7 | 9.5 | 7.5 | 6.2 | 3.3 | 3.3 |
| South | 27.2 | 20.5 | 13.9 | 10.8 | 8.0 | 14.7 |
| SouthWest | 26.4 | 17.7 | 9.2 | 8.4 | 6.8 | 10.8 |
| West | 14.2 | 12.7 | 7.8 | 12.5 | 11.5 | 16.8 |
| NorthWest | 3.6 | 4.8 | 6.6 | 8.4 | 12.1 | 11.7 |