nomadseason

May Weather in Hartsville, United States

Last updated: June 24, 2025

In May, the average temperature in Hartsville, United States is a pleasant 23°C (73°F). However, be prepared for a range of temperatures, as it can dip to a chilly 6°C (43°F) or soar to a sweltering 37°C (98°F). Expect 110 mm (4.3 in) of precipitation over 10 days, contributing to an average humidity of 83%—perfect for those who enjoy a lush, vibrant atmosphere!

May Temperature in Hartsville

In May in Hartsville, the average temperature is 23°C (73°F). The maximum can reach 37°C (98°F) while the minimum can drop to 6°C (43°F). Travelers should be prepared for a wide range of temperatures, making layering essential for comfort during their visit.

May Weather in Hartsville: Daily Temperature Highs, Lows, and Averages

The chart illustrates May temperature patterns in Hartsville, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Hartsville, May typically has an average temperature of 23°C (73°F), with highs reaching up to 37°C (98°F) and lows dropping to around 6°C (43°F).
JanFebMarAprMayJunJulAugSepOctNovDec475357657378818177685450
Data source: Temperature data for Hartsville generated using information from the Copernicus Climate Change Service.
Choose your preferred temperature unit
The average of daily temperatures (24 hours) calculated across all days in the month.

May Precipitation in Hartsville

In Hartsville in May, the precipitation amount is 110 mm (4.3 in) over a period of 10 days.

May Precipitation Trends in Hartsville

The chart displays monthly precipitation patterns in Hartsville, with values for each month alongside May’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how May’s conditions compare to those of other months. In Hartsville, May typically receives around 110 mm (4.3 inches) of precipitation spread over approximately 10 days.
JanFebMarAprMayJunJulAugSepOctNovDec819971951101251291261515969141
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

May Humidity in Hartsville

In Hartsville in May, humidity is 83%. With an average temperature of 23°C (73°F), this humidity feels like a heavy blanket wrapping around you, making travel slightly uncomfortable and causing you to break a sweat as you explore.

May Average Humidity in Hartsville

This chart illustrates the average monthly humidity levels in Hartsville, with May’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In May, average humidity in Hartsville is approximately 83%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec86%85%84%82%83%82%80%74%75%79%87%87%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Hartsville

In Hartsville in May, the maximum UV index reaches 11, which corresponds to an extreme Exposure Category. With a time to burn of just 10 minutes, it's essential to take precautions. For more details, you can check the Hourly UV Index in Hartsville.

Maximum UV Index Levels in Hartsville for May

The chart shows the monthly maximum UV Index (UVI) for Hartsville in May, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In May, the maximum UV index in Hartsville typically reaches 11, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec47810111111109864
Data source: Hartsville May UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

How May Weather in Hartsville Compares to Other Months

Weather in Hartsville varies notably across the year, with each month offering distinct climate conditions. This page compares May’s weather to other months in Hartsville, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Hartsville, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather9°C (48°F)81 mm (3.2 inches)86%moderate
February Weather12°C (53°F)99 mm (3.9 inches)85%high
March Weather14°C (57°F)70 mm (2.8 inches)84%very high
April Weather18°C (65°F)95 mm (3.7 inches)82%very high
May Weather23°C (73°F)110 mm (4.3 inches)83%extreme
June Weather26°C (78°F)125 mm (4.9 inches)82%extreme
July Weather27°C (82°F)128 mm (5.1 inches)80%extreme
August Weather27°C (81°F)125 mm (4.9 inches)74%very high
September Weather25°C (77°F)151 mm (5.9 inches)75%very high
October Weather20°C (69°F)59 mm (2.3 inches)79%very high
November Weather12°C (55°F)69 mm (2.7 inches)87%high
December Weather10°C (50°F)141 mm (5.6 inches)87%moderate

Compare Hartsville's Climate with Cities Worldwide