May weather forecast
South Carolina, USA

May is indicative of South Carolina's progression deeper into spring, moving towards the early onset of summer. Coastal regions such as Hilton Head Island witness temperatures that vary from 60°F (15.6°C) to 82°F (27.8°C). The warmth during daytime becomes more pronounced, and nights remain comfortably mild.

In the Midlands, cities like Columbia experience a significant temperature rise, often marking the beginning of consistently warm days. Evenings in this region remain temperate, offering a respite from the daytime warmth. The Upstate, encompassing areas adjacent to the Blue Ridge Mountains, continues to be slightly cooler than the rest of the state, particularly during the nighttime, though daytime temperatures are uniformly warm.

May, with its longer days, allows for an extended period of sunshine, casting a golden hue over South Carolina's diverse landscapes. Occasional rain showers are common, but they're typically interspersed with long periods of clear skies. The state's flora remains in full bloom, and the increased warmth signals the beginning of outdoor recreational activities, especially near the coastal regions.

When compared to April, May presents a noticeable increase in both temperatures and humidity levels. While April's weather is comfortably warm, May introduces the state to the early hints of the sultry summer heat, especially as the month nears its end and South Carolina gears up for the peak summer months of June and July.

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• Columbia - May »
  On the last day of the month, sunrise is at 6:14 am and sunset at 8:29 pm EDT. In Columbia during May, the rain falls for 13.8 days and regularly aggregates up to 2.32" (59mm) of precipitation.
• Charleston - May »
  In Charleston in May, during 15.8 rainfall days, 2.87" (73mm) of precipitation is typically accumulated. On the first day of May in Charleston sunrise is at 6:32 am and sunset at 8:01 pm.
• North Charleston - May »
  In North Charleston during the entire year, the rain falls for 154.4 days and collects up to 23.43" (595mm) of precipitation. On the first day of May in North Charleston sunrise is at 6:32 am and sunset at 8:01 pm.
• Mount Pleasant - May »
  In Mount Pleasant in May, during 16.5 rainfall days, 3.23" (82mm) of precipitation is typically accumulated. In Mount Pleasant in May, it is raining for 16.5 days, with typically 3.23" (82mm) of accumulated precipitation.
• Rock Hill - May »
  In Rock Hill in May, it is raining for 16.2 days, with typically 2.76" (70mm) of accumulated precipitation. April through November are months without snowfall in Rock Hill, South Carolina.
• Greenville - May »
  In Greenville in May, during 16.4 rainfall days, 3.5" (89mm) of precipitation is typically accumulated. In Greenville snow does not fall in April through October.
• Summerville - May »
  May through August, with an average maximum UV index of 7, are months with the highest UV index in Summerville, South Carolina. In May, in Summerville the rain falls for 10 days.
• Goose Creek - May »
  In Goose Creek during the entire year, the rain falls for 172.6 days and collects up to 39.13" (994mm) of precipitation. In Goose Creek, during May, the rain falls for 15.6 days and regularly aggregates up to 2.95" (75mm) of precipitation.
• Sumter - May »
  In Sumter during May, the rain falls for 15.6 days and regularly aggregates up to 3.35" (85mm) of precipitation. In Sumter snow does not fall in April through October.
• Hilton Head Island - May »
  On the first day of May in Hilton Head Island sunrise is at 6:36 am and sunset at 8:03 pm. In Hilton Head Island in May, the average water temperature is 72.3°F (22.4°C).
• Florence - May »
  In Florence during the entire year, the rain falls for 168.6 days and collects up to 33.82" (859mm) of precipitation. On the first day of May in Florence sunrise is at 6:29 am and sunset at 8:02 pm.
• Spartanburg - May »
  In Spartanburg snow does not fall in April through November. In May, in Spartanburg, South Carolina, the rain falls for 14.7 days.