Sullivan's Island Rainfall Forecast

Today 15 Sep
10%
Wed 16 Sep
No Rain
Thu 17 Sep
5%
Fri 18 Sep
15%
Sat 19 Sep
20%
Sun 20 Sep
20%
Mon 21 Sep
35%

Sullivan's Island Rainfall Statistics

September Rainfall

Mount Pleasant Regional-Faison Field (9.3 miles)

Total Rainfall 2026
27.6in
Daily Average 2026
0.1in
Wettest Day 10 July, 2026
2.7in
Wet Days 2026
74/258 (29%)
Total Rainfall August
6.1in
Daily Average August
0.2in
Wettest Day 27 August, 2026
1.7in
Wet Days August
17/31 (55%)
Total Rainfall September
0.3in
Daily Average September
0.02in
Wettest Day 11 September, 2026
0.2in
Wet Days September
2/15 (13%)

Climate (2021–2025)

Mount Pleasant Regional-Faison Field (9.3 miles)

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Annual Average 2021–2025
23.8in
Monthly Average 2021–2026
2.2in
Daily Average 2021–2026
0.1in
Wettest Day 17 December, 2023
5.7in

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