Wedding weather data · USA
Wedding weather in Charleston
In Charleston, the driest months for a wedding are October and November, when rain falls on about 22% of days. The wettest is August, with rain on about 62% of days. Here is the full picture, month by month, from 10 years of daily weather records.
Rain odds and temperatures by month
| Month | Chance of a rainy day | Heavy rain | Rainy days | Avg high | Avg low | Sunshine |
|---|---|---|---|---|---|---|
| January | 31% | 8% | 9.5 | 58°F (15°C) | 44°F (7°C) | 7.6 h/day |
| February | 31% | 9% | 8.7 | 62°F (17°C) | 48°F (9°C) | 8 h/day |
| March | 29% | 9% | 8.9 | 67°F (20°C) | 53°F (12°C) | 8.9 h/day |
| April | 28% | 10% | 8.4 | 73°F (23°C) | 59°F (15°C) | 10.8 h/day |
| May | 35% | 8% | 10.8 | 80°F (27°C) | 67°F (20°C) | 11.5 h/day |
| June | 53% | 11% | 16 | 85°F (29°C) | 74°F (23°C) | 11.6 h/day |
| July | 55% | 11% | 17 | 88°F (31°C) | 77°F (25°C) | 11.5 h/day |
| August | 62% | 15% | 19.3 | 86°F (30°C) | 76°F (25°C) | 10.7 h/day |
| September | 46% | 10% | 13.8 | 83°F (28°C) | 72°F (22°C) | 9.9 h/day |
| October ✦ | 22% | 7% | 6.9 | 76°F (25°C) | 63°F (17°C) | 9.3 h/day |
| November | 27% | 10% | 8 | 67°F (20°C) | 53°F (12°C) | 8.2 h/day |
| December | 30% | 12% | 9.2 | 62°F (17°C) | 49°F (9°C) | 7 h/day |
Source: Open-Meteo Historical Weather API (ERA5 reanalysis), daily data 2015–2024 for 32.78, -79.93. Rainy day ≥ 1 mm, heavy rain ≥ 10 mm. Climatology, not a forecast.
Best months for a wedding in Charleston
Weighing low rain odds with comfortable temperatures (roughly 18–29 °C / 65–84 °F highs), the best months for an outdoor wedding in Charleston are October.
When to be careful
August is the wettest month in Charleston: rain falls on about 62% of days, and 15% of days bring heavy rain (10 mm or more). Book a solid backup if you marry then.
How to read these numbers
A "rainy day" is a day with at least 1 mm (0.04 in) of rain. A 30% chance means about 3 in 10 days in that month saw at least a little rain, often a short shower. For your exact date and venue, use our free rain odds tool.
Charleston weather month by month
What a wedding day in Charleston usually looks like in each month, from 10 years of daily weather records.
Charleston weather in January
In January, it rains (1 mm or more) on 31% of days in Charleston, about 9.5 days in the month, and 8% of days bring heavy rain. Typical highs are 58°F (15°C), lows 44°F (7°C), with around 7.6 hours of sunshine a day. Average odds: plan outdoors, but book a rain plan you would actually like.
Charleston weather in February
In February, it rains (1 mm or more) on 31% of days in Charleston, about 8.7 days in the month, and 9% of days bring heavy rain. Typical highs are 62°F (17°C), lows 48°F (9°C), with around 8 hours of sunshine a day. Average odds: plan outdoors, but book a rain plan you would actually like.
Charleston weather in March
In March, it rains (1 mm or more) on 29% of days in Charleston, about 8.9 days in the month, and 9% of days bring heavy rain. Typical highs are 67°F (20°C), lows 53°F (12°C), with around 8.9 hours of sunshine a day. Average odds: plan outdoors, but book a rain plan you would actually like.
Charleston weather in April
In April, it rains (1 mm or more) on 28% of days in Charleston, about 8.4 days in the month, and 10% of days bring heavy rain. Typical highs are 73°F (23°C), lows 59°F (15°C), with around 10.8 hours of sunshine a day. One of the driest months here: a good bet for an outdoor ceremony.
Charleston weather in May
In May, it rains (1 mm or more) on 35% of days in Charleston, about 10.8 days in the month, and 8% of days bring heavy rain. Typical highs are 80°F (27°C), lows 67°F (20°C), with around 11.5 hours of sunshine a day. Average odds: plan outdoors, but book a rain plan you would actually like.
Charleston weather in June
In June, it rains (1 mm or more) on 53% of days in Charleston, about 16 days in the month, and 11% of days bring heavy rain. Typical highs are 85°F (29°C), lows 74°F (23°C), with around 11.6 hours of sunshine a day. One of the wettest months here: plan a covered ceremony or a tent from the start.
Charleston weather in July
In July, it rains (1 mm or more) on 55% of days in Charleston, about 17 days in the month, and 11% of days bring heavy rain. Typical highs are 88°F (31°C), lows 77°F (25°C), with around 11.5 hours of sunshine a day. One of the wettest months here: plan a covered ceremony or a tent from the start.
Charleston weather in August
In August, it rains (1 mm or more) on 62% of days in Charleston, about 19.3 days in the month, and 15% of days bring heavy rain. Typical highs are 86°F (30°C), lows 76°F (25°C), with around 10.7 hours of sunshine a day. One of the wettest months here: plan a covered ceremony or a tent from the start.
Charleston weather in September
In September, it rains (1 mm or more) on 46% of days in Charleston, about 13.8 days in the month, and 10% of days bring heavy rain. Typical highs are 83°F (28°C), lows 72°F (22°C), with around 9.9 hours of sunshine a day. Average odds: plan outdoors, but book a rain plan you would actually like.
Charleston weather in October
In October, it rains (1 mm or more) on 22% of days in Charleston, about 6.9 days in the month, and 7% of days bring heavy rain. Typical highs are 76°F (25°C), lows 63°F (17°C), with around 9.3 hours of sunshine a day. One of the driest months here: a good bet for an outdoor ceremony.
Charleston weather in November
In November, it rains (1 mm or more) on 27% of days in Charleston, about 8 days in the month, and 10% of days bring heavy rain. Typical highs are 67°F (20°C), lows 53°F (12°C), with around 8.2 hours of sunshine a day. One of the driest months here: a good bet for an outdoor ceremony.
Charleston weather in December
In December, it rains (1 mm or more) on 30% of days in Charleston, about 9.2 days in the month, and 12% of days bring heavy rain. Typical highs are 62°F (17°C), lows 49°F (9°C), with around 7 hours of sunshine a day. Average odds: plan outdoors, but book a rain plan you would actually like.
Frequently asked questions
What is the best month to get married in Charleston?
Based on 10 years of weather data, October is the driest month in Charleston, with rain on about 22% of days and average highs around 76°F (25°C). Overall, the best months for an outdoor wedding there are October.
What is the rainiest month in Charleston?
August is the rainiest month in Charleston: on average 19.3 days of the month see at least 1 mm of rain, and about 15% of days bring heavy rain.
Will it rain on my wedding day in Charleston?
Nobody can forecast your wedding day months ahead. What history shows is the chance of rain: in October it rains on about 22% of days in Charleston. Check your exact date with our free rain odds tool, then watch the real forecast from about 7 days out.