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 first day of May in Columbia, South Carolina, sunrise is at 6:34 am and sunset at 8:08 pm. 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 during May, the rain falls for 15.8 days and regularly aggregates up to 2.87" (73mm) of precipitation. In Charleston in May, it is raining for 15.8 days, with typically 2.87" (73mm) of accumulated precipitation.
• North Charleston - May »
  May through August, with an average maximum UV index of 7, are months with the highest UV index in North Charleston, South Carolina. In North Charleston, during the entire year, the rain falls for 154.4 days and collects up to 23.43" (595mm) of precipitation.
• Mount Pleasant - May »
  On the first day of May in Mount Pleasant, South Carolina, sunrise is at 6:31 am and sunset at 8:01 pm. Throughout the year, in Mount Pleasant there are 182.9 rainfall days, and 44.69" (1135mm) of precipitation is accumulated.
• Rock Hill - May »
  In Rock Hill snow does not fall in April through November. In Rock Hill, during May, the rain falls for 16.2 days and regularly aggregates up to 2.76" (70mm) of precipitation.
• Greenville - May »
  In Greenville during May, the rain falls for 16.4 days and regularly aggregates up to 3.5" (89mm) of precipitation. In Greenville, during May, the rain falls for 16.4 days and regularly aggregates up to 3.5" (89mm) of precipitation.
• Summerville - May »
  On the last day of the month, in Summerville sunrise is at 6:12 am and sunset at 8:24 pm EDT. In Summerville during May, the rain falls for 10 days and regularly aggregates up to 0.67" (17mm) of precipitation.
• Goose Creek - May »
  The shift into May in Goose Creek is accompanied by a modest temperature increase, with the average high-temperature edging up from a warm 74.8°F (23.8°C) in April to a still moderately hot 81.3°F (27.4°C). March through November are months without snowfall in Goose Creek, South Carolina.
• Sumter - May »
  On the last day of the month, in Sumter sunrise is at 6:11 am and sunset at 8:27 pm EDT. In Sumter during May, the rain falls for 15.6 days and regularly aggregates up to 3.35" (85mm) of precipitation.
• Hilton Head Island - May »
  In Hilton Head Island during May, the rain falls for 15.3 days and regularly aggregates up to 2.09" (53mm) of precipitation. In Hilton Head Island in May, the average water temperature is 72.3°F (22.4°C).
• Florence - May »
  In Florence snow does not fall in April through October. With an average relative humidity of 78%, May is the most humid month in Florence.
• Spartanburg - May »
  In Spartanburg during May, the rain falls for 14.7 days and regularly aggregates up to 2.68" (68mm) of precipitation. On the first day of May in Spartanburg, South Carolina, sunrise is at 6:36 am and sunset at 8:13 pm.