Hilton Head Island
South Carolina, USA
Long-term weather forecast
Long-term weather forecast

June weather forecast and climate
Hilton Head Island, SC

June is the beginning of the wet and humid summer season in Hilton Head, which sees average temperatures in the 69.1°F (20.6°C) to 87.1°F (30.6°C) range. The days are long with extended periods of sunny weather followed by cloudy ones, but the temperatures rarely stay beyond 90°F (32.2°C) for long periods.
June sees ample rainfall that registers 5.3" (134.6mm), but the showers are heavy and short. Nights are warm, with an average humidity of 74%, and seldom drop below 60.1°F (15.6°C).
The beaches are full, and the seawaters see enthusiastic swimmers with the water temperatures of 79°F (26.1°C).
  • Average high temperature in June: 87°F

The warmest month (with the highest average high temperature) is July (90°F).
The month with the lowest average high temperature is January (61°F).

  • Average low temperature in June: 69°F

The month with the highest average low temperature is July (72°F).
The coldest month (with the lowest average low temperature) is January (38°F).

  • Average rainfall in June: 5.3"

The wettest month (with the highest rainfall) is August (8.9").
The driest month (with the lowest rainfall) is November (2.4").

  • Average rainfall days in June: 11 days

Months with the highest number of rainy days are July and August (13 days).
Months with the lowest number of rainy days are October and November (6 days).

  • Average sea temperature in June: 79.2°F

The best month for swimming (with the highest average sea temperature) is August (83.5°F).
The coldest month (with the lowest average sea temperature) is February (57.5°F).

  • Average daylight in June: 14.2h

The month with the longest days is June (Average daylight: 14.2h).
The month with shortest days is December (Average daylight: 10.1h).

  • Average sunshine in June: 9h

Months with most sunshine are April, May, June and July (Average sunshine: 9h).
Months with least sunshine are January, November and December (Average sunshine: 6).

  • Average UV index in June: 10

Months with the highest UV index are May, June, July and August (UV index 10).
Months with the lowest UV index are January and December (UV index 3).