Rainfall totals Charleston, SC
Through Oct 7, 2026, Charleston has received 26.52 inches of rain for the year, according to the official daily climate report. The normal year-to-date total is 43.47 inches. The normal figure is what the city would typically have seen by this point in the calendar. This reading comes from the station gauge at CHARLESTOWN MUNI in the National Weather Service's daily climate report.
as of
Data from Charleston International Airport, with records back to 1937. Across the record from 1937, 100 percent of days have a reading, with 100 percent in 2025.
Most recent rainfall
0.16 inches of rain fell on Oct 3, 2026, the latest measurable rainfall this year.
CHARLESTOWN MUNI saw no measurable rain on Oct 7, 2026, according to the National Weather Service daily climate report.
Official rainfall report for Oct 7, 2026
| Measured | Normal | vs normal | |
|---|---|---|---|
| Rain on Oct 7, 2026 | 0.00 inches | 0.17 inches | -0.17 inches |
| Last 48 hours | 0.00 inches | ||
| Last 72 hours | 0.26 inches | ||
| Last 7 days | 1.71 inches | ||
| Month to date | 1.71 inches | 1.30 inches | +0.41 inches (+32%) |
| Year to date | 26.52 inches | 43.47 inches | -16.95 inches (-39%) |
| Record for Oct 7 | 4.70 inches | 2016 |
Source: National Weather Service daily climate report for CHARLESTOWN MUNI, issued the morning after Oct 7, 2026. The local National Weather Service office issues the daily climate report for the airport station the next morning, and that report is the official figure.
How much rain did Charleston get?
Days with measurable rain, 2026
| Date | Rainfall |
|---|---|
| Oct 3, 2026 | 0.16 inches |
| Sep 24, 2026 | 0.03 inches |
| Sep 22, 2026 | 0.02 inches |
| Sep 19, 2026 | 1.27 inches |
| Sep 11, 2026 | 1.81 inches |
| Sep 10, 2026 | 0.37 inches |
| Sep 7, 2026 | 0.04 inches |
| Aug 30, 2026 | 0.16 inches |
| Aug 29, 2026 | 0.33 inches |
| Aug 28, 2026 | 0.10 inches |
| Aug 27, 2026 | 0.73 inches |
| Aug 26, 2026 | 0.44 inches |
| Aug 22, 2026 | 1.20 inches |
| Aug 20, 2026 | 0.06 inches |
| Aug 19, 2026 | 0.02 inches |
| Aug 16, 2026 | 0.32 inches |
| Aug 15, 2026 | 0.66 inches |
| Aug 14, 2026 | 0.01 inches |
| Aug 13, 2026 | 0.05 inches |
| Aug 9, 2026 | 0.01 inches |
| Aug 8, 2026 | 0.02 inches |
| Aug 6, 2026 | 0.20 inches |
| Aug 3, 2026 | 0.13 inches |
| Aug 2, 2026 | 0.99 inches |
| Jul 29, 2026 | 0.64 inches |
| Jul 26, 2026 | 0.32 inches |
| Jul 25, 2026 | 0.25 inches |
| Jul 24, 2026 | 0.05 inches |
| Jul 21, 2026 | 0.01 inches |
| Jul 14, 2026 | 0.09 inches |
With 2.01 inches on Jul 10, 2026, this is the 328th wettest of the 10,050 measurable rain days in the Charleston International Airport record, which begins in 1937.
Through Oct 3, 2026, the GHCN-Daily station record shows 24.97 inches of measurable rain so far this year, falling over a 79-day span. Station observations are from GHCN-Daily, with a 1-3 day lag and quality checks by NOAA.
Charleston rainfall by month, 2026
| Month | Rainfall | Normal | vs normal |
|---|---|---|---|
| January | 2.38 inches | 3.37 inches | -0.99 inches (-29%) |
| February | 2.57 inches | 3.05 inches | -0.48 inches (-16%) |
| March | 0.37 inches | 3.35 inches | -2.98 inches (-89%) |
| April | 0.24 inches | 3.29 inches | -3.05 inches (-93%) |
| May | 3.56 inches | 3.32 inches | +0.24 inches (+7%) |
| June | 1.89 inches | 6.21 inches | -4.32 inches (-70%) |
| July | 4.83 inches | 6.60 inches | -1.77 inches (-27%) |
| August | 5.43 inches | 6.97 inches | -1.54 inches (-22%) |
| September | 3.54 inches | 6.01 inches | -2.47 inches (-41%) |
| October | 0.16 inches | 4.33 inches |
October is still in progress; figures run through Oct 3, 2026. Averages are 1991-2020 normals from NCEI.
Rainfall days at each threshold in Charleston
| Year | 0.5+ in. | 1+ in. | 2+ in. | 3+ in. |
|---|---|---|---|---|
| 2025 | 29 | 10 | 2 | 2 |
| 2024 | 29 | 18 | 4 | 3 |
| 2023 | 30 | 16 | 6 | 2 |
| 2022 | 28 | 19 | 4 | 1 |
| 2021 | 37 | 21 | 4 | 2 |
| 2020 | 34 | 18 | 4 | 2 |
| 2019 | 31 | 15 | 6 | 1 |
| 2018 | 37 | 16 | 4 | 1 |
| 2017 | 36 | 18 | 1 | 1 |
| 2016 | 28 | 19 | 8 | 3 |
| Average | 33.1 | 14.8 | 3.8 | 1.4 |
A day counts when its rainfall total meets or passes the column amount, from Charleston International Airport records in GHCN-Daily. Every complete year starting with 1937 counts toward the average, 88 years in total.
Past rainfall years in Charleston
All-time rainfall records
| Wettest day | 11.50 inches | Oct 3, 2015 |
|---|---|---|
| Wettest year | 74.89 inches | 2015 |
| Driest year | 30.31 inches | 1954 |
| Average year | 51.61 inches | 88 complete years on record |
| Rain days a year | 112 | average, 0.01 inch or more |
| Record begins | 1937 | 32,708 daily readings |
Monthly rainfall normals
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Year |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Inches | 3.37 | 3.05 | 3.35 | 3.29 | 3.32 | 6.21 | 6.60 | 6.97 | 6.01 | 4.33 | 2.66 | 3.35 | 52.51 |
Averages are 1991-2020 normals from NCEI.
The daily climate report is issued by the local National Weather Service forecast office and delivered to this page by the Iowa Environmental Mesonet of Iowa State University. Under 17 U.S.C. 105, no copyright attaches to the government-produced figures on this page, including reports, alerts, station observations, and normals, which were created by the National Weather Service and other NOAA offices. The notice that 17 U.S.C. 403 requires appears in this sentence. It does not imply endorsement by or affiliation with those agencies. See: Data sources and attribution.