Hilton Head Island
South Carolina, USA
Long-term weather forecast
Long-term weather forecast
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Monthly weather forecast and Climate
Hilton Head Island, SC

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Hilton Head Island has a humid subtropical type of climate (Köppen climate classification Cfa) with warm, humid summers and cold winters. Hilton Head Island, or simply Hilton Head, lies in the Beaufort County of South Carolina in the United States. The popular tourist destination is a resort town and a barrier island in the Atlantic Ocean that affects its climate, along with its location near the tropics.

Hilton Head lies at an average elevation of 3 meters above sea level. The topography consists of maritime forests, an interior with wetlands, marshlands and shifting beaches. The Broad Creek separates the two parts of the island, of which, only the southern half is an actual barrier island. The island has 12 miles of beaches on the Atlantic Ocean, and the ocean waters are one of the best in the United States.

Summer is hot and humid in Hilton Head as the temperatures lie in the 21.7°C (71.1°F) to 31.7°C (89.1°F) range with the peak in July. Every day temperature crosses 26.7°C (80.1°F) in the hot season, while one-third of the days touch 32.2°C (90°F). Winters are mild to cold with a few frosty nights, as the low temperatures drop below 0°C (32°F). Spring is the sunniest period with unpredictable rain amid pleasant weather. Autumn has comfortable weather with warm ocean temperatures and less rainfall in its latter half.

The annual average precipitation in Hilton Head is 1295.4mm (51") with rainfall throughout the year. June to September receives the majority of the yearly rainfall, but there is rarely any dry period due to the constant clashes of warm and cold air masses over the region.
The annual sunshine is ample to the tune of 2730 hours as the summer days receive 14 hours of sunlight. The average humidity is 72% and mornings are usually the most humid. Snowfall is absent in Hilton Head due to its southern location and maritime surroundings.

The record high temperature for Hilton Head Island is 41.7°C (107.1°F), while the record low temperature is -15.6°C (3.9°F).
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Hilton Head is popular, around the year tourist destination, but the best time to visit Hilton Head Island is late spring from April to May and early autumn from September to October. The temperatures are usually comfortable in the shoulder seasons, the seawaters are mild, the crowds are manageable, and the chances of stormy weather are minimal. Summer is the peak tourist season, and the temperatures can cross 32.2°C (90°F) with high humidity and heavy rainfall.

The worst time to visit Hilton Head Island, if there is any, is during the winter between December to February. The winter days have comfortable temperatures that reach up to 21.1°C (70°F) but several nights may drop to freezing. A cold wave sweeping from the northern plains may descend to the south and bring down the temperatures. The skies can be occasionally cloudy and the conditions misty.

Hilton Head Island is prone to thunderstorms during the summer and flooding amid heavy rainfall. The entire Beaufort County faces a threat from hurricanes and tornadoes. The storm season is from June to October but may extend from spring to autumn in an odd year. Severe storms cause routine power outage along with the destruction of property.

January is usually the coldest month of the year in Hilton Head with the average temperatures in the cold 3.3°C (37.9°F) to 16.1°C (61°F) range. Weather in January »

February is a mild winter month in Hilton Head with the average temperatures in the 4.4°C (39.9°F) to 17.2°C (63°F) range. A few days touch 21.1°C (70°F). Weather in February »

March is warm and damp with the arrival of the spring season in Hilton Head amid unpredictable weather. The average temperatures are in the region of 8.3°C (46.9°F) to 20.6°C (69.1°F). Weather in March »

April is one of the best times to visit Hilton Head with the advent of the spring season. The island basks in beautiful sunshine as the last remnants of winter pass away. Weather in April »

The average temperatures are in the comfortable 16.7°C (62.1°F) to 27.8°C (82°F) range as almost every day records at least 21.1°C (70°F). Weather in May »

June is the beginning of the wet and humid summer season in Hilton Head, which sees average temperatures in the 20.6°C (69.1°F) to 30.6°C (87.1°F) range. Weather in June »

July is the hottest month of the year in Hilton Head with the average high temperature around the 32.2°C (90°F) mark. The days mostly remain below the 35°C (95°F). Weather in July »

The rain Gods thrash the city with 208.3mm (8.2") of rain. The average humidity is the highest of the year at 79%, and the muggy conditions bring uncomfortable weather. Weather in August »

The average temperatures are in the mild zone of 20°C (68°F) to 29.4°C (84.9°F) with daily sunshine for 7 hours. It is rare for day's temperature to go past 32.2°C (90°F). Weather in September »

October sees a drop in temperatures and the conditions are pleasantly warm. The average temperatures are usually in the 13.9°C (57°F) to 25.6°C (78.1°F) range. Weather in October »

November is the driest month of the year in Hilton Head with the average temperatures between 8.9°C (48°F) to 21.1°C (70°F). Weather in November »

December starts the mild to cold winter in Hilton Head as the misty cold spreads slowly over the island. The average temperatures are in the range of 5°C (41°F) to 17.2°C (63°F). Weather in December »
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