© 2020 AccuWeather, Inc. "AccuWeather" and sun design are registered trademarks of AccuWeather, Inc. All Rights Reserved. Hilton Head Island’s subtropical weather allows you to enjoy the breathtaking coast and surrounding ‘Lowcountry’ all year round. TEMPERATURE RAINFALL. The most pleasant months of the year for Hilton Head Island are October, April and May. Within 50 miles is essentially flat (302 feet). Shortwave radiation includes visible light and ultraviolet radiation. The number of hours during which the Sun is visible (black line). °C, km/h °F °F, nœuds °C, m/s °C, km/h °C, miles/h Thus, the mean temperature average in august in Hilton Head Island is 86°F. Hilton Head Island, SC 50° F Temperatures in Hilton Head in January can vary enormously, with highs ranging from the 40s to the 70s or even into the 80s almost from one day to the next. The weather in January in Hilton Head Island is characteristically cool and a little damp. The shaded overlays indicate night and civil twilight. Elevation data comes from the Shuttle Radar Topography Mission (SRTM) , published by NASA's Jet Propulsion Laboratory. Names, locations, and time zones of places and some airports come from the GeoNames Geographical Database . For each station, the records are corrected for the elevation difference between that station and Hilton Head Island according to the International Standard Atmosphere , and by the relative change present in the MERRA-2 satellite-era reanalysis between the two locations. December starts the mild to cold winter in Hilton Head as the misty cold spreads slowly over the island. Hilton Head Island, South Carolina - Travel and vacation weather averages, current conditions and forecasts. Weather forecast in … On average January is the dries… 66.3 °F: How Many Inches of Rain per year does Hilton Head Island get ? For reference, on June 20, the longest day of the year, the Sun rises at 6:16 AM and sets 14 hours, 16 minutes later, at 8:32 PM, while on December 21, the shortest day of the year, it rises at 7:20 AM and sets 10 hours, 2 minutes later, at 5:22 PM. The percentage of time spent in various temperature bands. 32 °F. All other weather data, including cloud cover, precipitation, wind speed and direction, and solar flux, come from NASA's MERRA-2 Modern-Era Retrospective Analysis . Find out more about our data sources. The average daily incident shortwave solar energy in Hilton Head Island is essentially constant during December, remaining within 0.1 kWh of 3.0 kWh throughout. Temperature December max. For reference, on July 11, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 58%, while on October 26, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 65%. This past December it was down right summery, but that is not always the case. High & Low Weather Summary for the Past Weeks Of course, here on the Island, cool is just code for comfortably warm. The percentage of hours in which the mean wind direction is from each of the four cardinal wind directions, excluding hours in which the mean wind speed is less than. Weather in Hilton Head Island in December: air temperature, number of sunny days, precipitation, air pressure and humidity. Hilton Head lies at an average elevation of 3 meters above sea level. The label associated with each bar indicates the date and time that the phase is obtained, and the companion time labels indicate the rise and set times of the Moon for the nearest time interval in which the moon is above the horizon. Daily temperatures fall mostly between a low of 42 degrees and a high of 62 degrees, with nearly every day reaching 50 degrees and over. July is the hottest month for Hilton Head Island with an average high temperature of 90.8°, which ranks it as cooler than most places in South Carolina. We assume no responsibility for any decisions made on the basis of the content presented on this site. Maximum temperature yesterday: 49 °F (at 1:56 pm) Minimum temperature yesterday: 41 °F (at 9:56 pm) Average temperature yesterday: 44 °F. March 2021: Welcome to the Hilton Head Island Wine and Food Festival! The estimated value at Hilton Head Island is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Hilton Head Island and a given station. For reference, the year's highest daily chance of a wet day is 53% on August 6, and its lowest chance is 17% on October 29. In Hilton Head Island, the chance of a wet day over the course of December is essentially constant, remaining around 23% throughout. The average of mean hourly wind speeds (dark gray line), with 25th to 75th and 10th to 90th percentile bands. Monthly: 1981-2010 normals Weather data is prone to errors, outages, and other defects. Over the course of December in Hilton Head Island, the length of the day is essentially constant. Daily high temperatures decrease by 5°F, from 65°F to 60°F, rarely falling below 47°F or exceeding 75°F. High Temp: 92 °F. Hilton Head Island weather in December. Precipitation / Rainfall December. For reference, on January 29, the windiest day of the year, the daily average wind speed is 12.0 miles per hour, while on August 16, the calmest day of the year, the daily average wind speed is 9.1 miles per hour. Also view: monthly average temperatures, precipitation, snow depth, wind speed, air quality and pollution. The area within 2 miles of Hilton Head Island is covered by herbaceous vegetation (67%), artificial surfaces (13%), and water (12%), within 10 miles by water (64%) and herbaceous vegetation (25%), and within 50 miles by water (50%) and trees (24%). The days at Hilton Head Island cool down further during December. High Temperature 31 °C 88 °F; Low Temperature 22 °C 72 °F; Rainfall 3 mm; Chance of Cloudy Day 0 % Chance of Fog Day 0 % Chance of Rain 20 % Chance of Snow Day 0 % Chance of Sunny Day 100 % Chance of Windy Day 0 % December; January; February; March ; April; May; June; July; August; September; October; November; Hilton Head Island … The figure below presents a compact representation of key lunar data for December 2020. Lower dew points feel drier and higher dew points feel more humid. Who knows? The lowest average daily incident shortwave solar energy during December is 2.8 kWh on December 20. Growing degree days are a measure of yearly heat accumulation used to predict plant and animal development, and defined as the integral of warmth above a base temperature, discarding any excess above a maximum temperature. Average Weather in December in Hilton Head South Carolina, United States. The thin dotted line is the corresponding average liquid-equivalent snowfall. Other things to do in Hilton Head in December include golfing at one of the area’s many excellent courses. The average accumulated growing degree days in Hilton Head Island are increasing during December, increasing by 187°F, from 6,257°F to 6,444°F, over the course of the month. The average surface water temperature in Hilton Head Island is gradually decreasing during December, falling by 2°F, from 67°F to 65°F, over the course of the month. The average growing degree days accumulated over the course of December, with 25th to 75th and 10th to 90th percentile bands. Hilton Head Island Wine & Food Festival . The wind direction in Hilton Head Island during December is predominantly out of the north from December 1 to December 30 and the west from December 30 to December 31. Disney's Hilton Head Island Resort: December in Hilton Head Disney - See 1,172 traveler reviews, 1,004 candid photos, and great deals for Disney's Hilton Head Island Resort at Tripadvisor. Hilton Head Island Weather. AdChoices. Get AccuWeather alerts as they happen with our browser notifications. Based on weather alone, this is probably a time of year to avoid going to Hilton Head Island for your holidays. Maximum temperature yesterday: 54 °F (at 2:26 pm) Minimum temperature yesterday: 33 °F (at 2:56 am) Average temperature yesterday: 43 °F. The day, twilights (civil, nautical, and astronomical), and night are indicated by the color bands from yellow to gray. The chance that a given day will be muggy in Hilton Head Island is decreasing during December, falling from 10% to 4% over the course of the month. Weather in Hilton Head. The daily average water temperature (purple line), with 25th to 75th and 10th to 90th percentile bands. Weather that chilly happens about once a year, on average, usually in December, January or February. Unlike temperature, which typically varies significantly between night and day, dew point tends to change more slowly, so while the temperature may drop at night, a muggy day is typically followed by a muggy night. Averages By Month. From bottom (most yellow) to top (most gray), the color bands indicate: full daylight, twilight (civil, nautical, and astronomical), and full night. Average Weather on December 13 in Hilton Head Island South Carolina, United States. Daily high temperatures decrease by 5°F, from 65°F to 60°F, rarely falling below 47°F or exceeding 75°F. 2017 2018 2019 2020. Weather Spark. In October, the heat starts to taper off, but the island remains warm with average temperatures reaching the high 70s and nighttime temps resting in the low 50s. Hilton Head Island, or simply Hilton Head, lies in the Beaufort County of South Carolina in the United States. The clearest day of the month is December 4, with clear, mostly clear, or partly cloudy conditions 58% of the time. The festival will celebrate its 36th year in 2021 with a fantastic schedule of events, including spectacular local chef showcases, intriguing wine education sessions, live entertainment and of course the famed Grand and Public Tastings. With global warming, it is tough to say just what is "normal" these days or not. Does it rain in Hilton Head Island in December? December Hilton Head Island Weather. Daily low temperatures decrease by 5°F, from 49°F to 44°F, rarely falling below 31°F or exceeding 62°F. Hilton Head Island Temperature Yesterday. Looking for the best time to visit Hilton Head, USA? The black line is the percentage chance that a given day is within the growing season. Carte. Get the monthly weather forecast for Hilton Head Island, SC, including daily high/low, historical averages, to help you plan ahead. Days per month on average in Hilton Head Island when the minimum temperature drops to 32, 40, or 50 °F or below. Average water temperature in Hilton Head Island in December is 16.8°C/62.2°F and therefore is not suitable for comfortable swimming. Temperatures are up to 90°F. Averages By Month. Daytime maximum temperatures average around a cool 16°C (61°F), whilst at … Find all the info about the weather, climate, prices, what to pack & more with Time Travella. We draw particular cautious attention to our reliance on the MERRA-2 model-based reconstructions for a number of important data series. Temperature ( purple line ), with 25th to 75th and 10th to 90th bands. On average, usually in December include golfing at one of the content presented on this site Wonderland... 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