Hilton Head Island weather in May 2025

Expect 28°C daytime maximum temperatures in the shade with on average 9 hours of sunshine per day in Hilton Head Island in May. Check more long-term weather averages for Hilton Head Island in May before you book your next holiday to South Carolina in 2025/2026.

  • 28°C maximum daytime temperature in May in Hilton Head Island28
    28°C max day temperature
  • 9 hours of sunshine per day
  • 9 days with some rainfall in May in Hilton Head Island9
    9 days with some rainfall
  • 18°C minimum night-time temperature in May in Hilton Head Island18
    18°C min night temperature
  • 14 hours of daylight per day in May in Hilton Head Island14
    14 hours of daylight per day
  • Moderate heat & humidity in May in Hilton Head IslandM
    Moderate heat & humidity
  • 101 mm monthly rainfall in May in Hilton Head Island101
    101 mm of monthly rainfall
  • UV (maximum) index 10 (Very High) in May in Hilton Head Island10
    10 (Very High) UV index
  • 23°C sea temperature in May in Hilton Head Island23
    23°C sea temperature

More about Hilton Head Island

Hilton Head Island by month

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Recommended for South Carolina

Carrentals.co.uk: Car hire offers from £5 a day

  • Find car hire worldwide from as little as £1 a day
  • Book car hire with no hidden costs & best price guarantee
  • Free cancellation up to 48 hours before pickup
Go to Carrentals.co.uk deal >>

View all Carrentals.co.uk offers

The May weather guide for South Carolina (Hilton Head Island) shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

Metric (°C / mm)  |  Imperial (°F / inches)

Back to top

More about the USA

How hot is it in Hilton Head Island in May?

Daytime temperatures usually reach 28°C in Hilton Head Island in May with moderate heat and humidity, falling to 18°C at night.

How sunny is it in Hilton Head Island in May?

There are normally 9 hours of bright sunshine each day in Hilton Head Island in May - that's 67% of daylight hours.

How warm is the sea around Hilton Head Island in May?

The average sea temperature around Hilton Head Island in May is 23°C.

Does it rain in Hilton Head Island in May?

There are usually 9 days with some rain in Hilton Head Island in May and the average monthly rainfall is 101mm.

Hilton Head Island May sunrise & sunset times

Browse the sunrise and sunset times for Hilton Head Island in May 2025. Select a month to view Hilton Head Island sunrise and sunset times for the next 12 months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Thursday, 1st May 2025 05:36 19:04
Friday, 16th May 2025 05:24 19:15
Saturday, 31st May 2025 05:17 19:24

Related posts

Popular travel offers

Explore holidays in the sun for less

More holidays

Airport parking

More parking

Airport lounges

More lounges

Top ^