Hilton Head weather in January
- High
- 60°
- Low
- 40°
- Rain
- 3.4"
- Ocean
- 53°
The average temperature in January is 60°F for highs and 40°F for lows, with about 3.4 inches of rain.
January is the island’s coolest stretch, and the quietest. Afternoons usually reach the low 60s, and nights dip to around 40, cold enough for a jacket on a bike ride but rarely cold enough to cancel anything. Sunny winter days are common, which is why the golf courses and walking trails stay in use.
The ocean is at its coolest this month, in the low 50s, so this is a month for the beach as a walk, not a swim. Pack layers: a mild afternoon can turn brisk by the water once the sun drops.
Hilton Head weather in February
- High
- 63°
- Low
- 42°
- Rain
- 3.2"
- Ocean
- 56°
The average temperature in February is 63°F for highs and 42°F for lows, with about 3.2 inches of rain.
February is still winter, but the days are noticeably longer and highs sit in the low 60s. Evenings stay cool, around 42, and rainfall stays moderate at about 3.2 inches.
It is a good month for golf, tennis and cycling when you would rather not deal with summer heat. The water is still too cold for most swimmers.
Hilton Head weather in March
- High
- 69°
- Low
- 48°
- Rain
- 3.9"
- Ocean
- 62°
The average temperature in March is 69°F for highs and 48°F for lows, with about 3.9 inches of rain.
March is when the island starts to feel like spring. Afternoons average about 69 and nights around 48, so daytime is comfortable in a light layer and mornings and evenings still call for a sweater. Landscapes bloom and the bike paths fill up.
Temperatures can swing from one week to the next: a warm run in the mid-70s is common, and so is a cool, breezy day in the 50s. Rainfall averages 3.9 inches, a little wetter than February. The ocean is still cool, in the low 60s, so most visitors are walking the beach rather than swimming. Pack for both ends of the range, and check the forecast a few days before you travel.
Hilton Head weather in April
- High
- 76°
- Low
- 55°
- Rain
- 3.0"
- Ocean
- 69°
The average temperature in April is 76°F for highs and 55°F for lows, with about 3.0 inches of rain.
April is one of the most pleasant months of the year, with highs in the mid-70s, lows in the mid-50s and only about 3 inches of rain. It is peak outdoor season for good reason: dry, warm days without the summer humidity.
The ocean has warmed into the upper 60s, still on the cool side for a long swim but fine for wading and for kids who do not mind it. Popular weeks book early, so settle your dates before the weather is the deciding factor.
Hilton Head weather in May
- High
- 82°
- Low
- 62°
- Rain
- 3.1"
- Ocean
- 76°
The average temperature in May is 82°F for highs and 62°F for lows, with about 3.1 inches of rain.
May is the start of beach weather. Highs reach the low 80s, nights stay in the 60s, and the ocean warms to the mid-70s, warm enough for most people to get in. Humidity is still light compared to midsummer.
It is a strong month if you want real beach days without the July heat and the busiest crowds.
Hilton Head weather in June
- High
- 87°
- Low
- 70°
- Rain
- 5.5"
- Ocean
- 81°
The average temperature in June is 87°F for highs and 70°F for lows, with about 5.5 inches of rain.
June opens summer in earnest: highs in the upper 80s, lows around 70 and warm ocean water around 81. Rainfall jumps to about 5.5 inches, mostly in short afternoon storms, so plan the beach for the morning. Hurricane season begins June 1.
Hilton Head weather in July
- High
- 90°
- Low
- 73°
- Rain
- 5.8"
- Ocean
- 85°
The average temperature in July is 90°F for highs and 73°F for lows, with about 5.8 inches of rain.
July is the hottest month, with highs around 90, lows in the low 70s and ocean water in the mid-80s. Afternoon sea breezes take some of the edge off, and the ocean is as warm as it gets. Expect humidity and the chance of an afternoon thunderstorm.
Hilton Head weather in August
- High
- 89°
- Low
- 72°
- Rain
- 6.5"
- Ocean
- 85°
The average temperature in August is 89°F for highs and 72°F for lows, with about 6.5 inches of rain.
August is warm and humid, and the wettest month on the chart at about 6.5 inches, usually as brief afternoon thunderstorms that clear out fast. The water stays in the mid-80s. It is also the start of the busiest part of hurricane season, so it is worth reading your rental or resort’s cancellation terms.
Hilton Head weather in September
- High
- 85°
- Low
- 68°
- Rain
- 6.2"
- Ocean
- 81°
The average temperature in September is 85°F for highs and 68°F for lows, with about 6.2 inches of rain.
September keeps the summer warmth, with highs in the mid-80s and ocean water still around 81, but with fewer crowds after Labor Day. Rain is still heavy at about 6.2 inches, and this is close to the peak of hurricane season, so keep an eye on the tropics and travel with flexible plans.
Hilton Head weather in October
- High
- 78°
- Low
- 58°
- Rain
- 3.8"
- Ocean
- 72°
The average temperature in October is 78°F for highs and 58°F for lows, with about 3.8 inches of rain.
October is a favorite. Highs are in the upper 70s, nights are in the upper 50s, and the humidity of summer is gone. Rainfall drops back to about 3.8 inches.
The ocean is still in the low 70s, so the beach works for another few weeks, and it is a pleasant month for golf, biking and eating outside. Hurricane season runs through November, so the tropics are worth a glance before you book.
Hilton Head weather in November
- High
- 70°
- Low
- 49°
- Rain
- 2.6"
- Ocean
- 66°
The average temperature in November is 70°F for highs and 49°F for lows, with about 2.6 inches of rain.
November is cooler and the driest month of the year at about 2.6 inches. Highs are around 70, evenings are near 49, and the water is down to the mid-60s. It is a good month for outdoor dining, golf and the bike paths, and hurricane season ends on November 30.
Hilton Head weather in December
- High
- 63°
- Low
- 43°
- Rain
- 3.1"
- Ocean
- 58°
The average temperature in December is 63°F for highs and 43°F for lows, with about 3.1 inches of rain.
December is mild for a winter month: highs in the low 60s, lows around 43 and about 3 inches of rain. Days are short but often clear, and the island runs on a quieter, holiday-lit schedule.
The ocean is in the upper 50s, so the beach is for walking. Plan for a jacket in the evening, and it is a comfortable month for golf, tennis and cycling.
