Average Weather in Beaufort South Carolina, United States
In Beaufort, the summers are hot and oppressive; the winters are short, cold, and windy; and it is wet and partly cloudy year round. Over the course of the year, the temperature typically varies from 42°F to 90°F and is rarely below 29°F or above 96°F.
Based on the tourism score, the best times of year to visit Beaufort for warm-weather activities are from early April to late May and from late September to late October.
The hot season lasts for 3.7 months, from May 25 to September 16, with an average daily high temperature above 84°F. The hottest day of the year is July 23, with an average high of 90°F and low of 76°F.
The cool season lasts for 3.0 months, from December 1 to February 28, with an average daily high temperature below 66°F. The coldest day of the year is January 17, with an average low of 42°F and high of 59°F.
Average High and Low Temperature
The figure below shows you a compact characterization of the entire year of hourly average temperatures. The horizontal axis is the day of the year, the vertical axis is the hour of the day, and the color is the average temperature for that hour and day.
Average Hourly Temperature
In Beaufort, the average percentage of the sky covered by clouds experiences significant seasonal variation over the course of the year.
The clearer part of the year in Beaufort begins around September 6 and lasts for 3.3 months, ending around December 16. On October 27, the clearest day of the year, the sky is clear, mostly clear, or partly cloudy 66% of the time, and overcast or mostly cloudy 34% of the time.
The cloudier part of the year begins around December 16 and lasts for 8.7 months, ending around September 6. On July 13, the cloudiest day of the year, the sky is overcast or mostly cloudy 56% of the time, and clear, mostly clear, or partly cloudy 44% of the time.
Cloud Cover Categories
0% clear 20% mostly clear 40% partly cloudy 60% mostly cloudy 80% overcast 100%
A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. The chance of wet days in Beaufort varies significantly throughout the year.
The wetter season lasts 3.6 months, from May 29 to September 16, with a greater than 35% chance of a given day being a wet day. The chance of a wet day peaks at 53% on August 7.
The drier season lasts 8.4 months, from September 16 to May 29. The smallest chance of a wet day is 17% on October 30.
Among wet days, we distinguish between those that experience rain alone, snow alone, or a mixture of the two. Based on this categorization, the most common form of precipitation throughout the year is rain alone, with a peak probability of 53% on August 7.
Daily Chance of Precipitation
To show variation within the months and not just the monthly totals, we show the rainfall accumulated over a sliding 31-day period centered around each day of the year. Beaufort experiences significant seasonal variation in monthly rainfall.
Rain falls throughout the year in Beaufort. The most rain falls during the 31 days centered around August 17, with an average total accumulation of 5.1 inches.
The least rain falls around November 10, with an average total accumulation of 2.2 inches.
Average Monthly Rainfall
The length of the day in Beaufort varies significantly over the course of the year. In 2021, the shortest day is December 21, with 10 hours, 1 minute of daylight; the longest day is June 20, with 14 hours, 17 minutes of daylight.
Hours of Daylight and Twilight
The earliest sunrise is at 6:14 AM on June 11, and the latest sunrise is 1 hour, 30 minutes later at 7:44 AM on November 6. The earliest sunset is at 5:16 PM on December 4, and the latest sunset is 3 hours, 17 minutes later at 8:33 PM on June 29.
Daylight saving time (DST) is observed in Beaufort during 2021, starting in the spring on March 14, lasting 7.8 months, and ending in the fall on November 7.
Sunrise & Sunset with Twilight and Daylight Saving Time
The figure below presents a compact representation of key lunar data for 2021. The horizontal axis is the day, the vertical axis is the hour of the day, and the colored areas indicate when the moon is above the horizon. The vertical gray bars (new Moons) and blue bars (full Moons) indicate key Moon phases.
Moon Rise, Set & Phases
Beaufort experiences extreme seasonal variation in the perceived humidity.
The muggier period of the year lasts for 5.7 months, from May 3 to October 24, during which time the comfort level is muggy, oppressive, or miserable at least 25% of the time. The muggiest day of the year is July 22, with muggy conditions 98% of the time.
The least muggy day of the year is January 31, with muggy conditions 1% of the time.
Humidity Comfort Levels
dry 55°F comfortable 60°F humid 65°F muggy 70°F oppressive 75°F miserable
The average hourly wind speed in Beaufort experiences significant seasonal variation over the course of the year.
The windier part of the year lasts for 6.5 months, from November 1 to May 18, with average wind speeds of more than 10.6 miles per hour. The windiest day of the year is March 9, with an average hourly wind speed of 12.1 miles per hour.
The calmer time of year lasts for 5.5 months, from May 18 to November 1. The calmest day of the year is August 17, with an average hourly wind speed of 9.1 miles per hour.
Average Wind Speed
The predominant average hourly wind direction in Beaufort varies throughout the year.
The wind is most often from the west for 2.6 months, from January 1 to March 19, with a peak percentage of 37% on January 20. The wind is most often from the south for 5.1 months, from March 19 to August 23, with a peak percentage of 49% on July 19. The wind is most often from the north for 2.7 months, from October 10 to January 1, with a peak percentage of 37% on November 9.
Beaufort is located near a large body of water (e.g., ocean, sea, or large lake). This section reports on the wide-area average surface temperature of that water.
The average water temperature experiences significant seasonal variation over the course of the year.
The time of year with warmer water lasts for 3.4 months, from June 14 to September 27, with an average temperature above 79°F. The day of the year with the warmest water is August 4, with an average temperature of 84°F.
The time of year with cooler water lasts for 4.3 months, from December 6 to April 17, with an average temperature below 67°F. The day of the year with the coolest water is March 3, with an average temperature of 62°F.
Average Water Temperature
Best Time of Year to Visit
To characterize how pleasant the weather is in Beaufort throughout the year, we compute two travel scores.
The tourism score favors clear, rainless days with perceived temperatures between 65°F and 80°F. Based on this score, the best times of year to visit Beaufort for general outdoor tourist activities are from early April to late May and from late September to late October, with a peak score in the first week of May.
The beach/pool score favors clear, rainless days with perceived temperatures between 75°F and 90°F. Based on this score, the best times of year to visit Beaufort for hot-weather activities are from mid May to early July and from mid August to late September, with a peak score in the second week of September.
For each hour between 8:00 AM and 9:00 PM of each day in the analysis period (1980 to 2016), independent scores are computed for perceived temperature, cloud cover, and total precipitation. Those scores are combined into a single hourly composite score, which is then aggregated into days, averaged over all the years in the analysis period, and smoothed.
Our cloud cover score is 10 for fully clear skies, falling linearly to 9 for mostly clear skies, and to 1 for fully overcast skies.
Our precipitation score, which is based on the three-hour precipitation centered on the hour in question, is 10 for no precipitation, falling linearly to 9 for trace precipitation, and to 0 for 0.04 inches of precipitation or more.
Our tourism temperature score is 0 for perceived temperatures below 50°F, rising linearly to 9 for 65°F, to 10 for 75°F, falling linearly to 9 for 80°F, and to 1 for 90°F or hotter.
Our beach/pool temperature score is 0 for perceived temperatures below 65°F, rising linearly to 9 for 75°F, to 10 for 82°F, falling linearly to 9 for 90°F, and to 1 for 100°F or hotter.
The growing season in Beaufort typically lasts for 9.9 months (301 days), from around February 17 to around December 15, rarely starting before January 26 or after March 18, and rarely ending before November 24 or after January 4.
Time Spent in Various Temperature Bands and the Growing Season
Based on growing degree days alone, the first spring blooms in Beaufort should appear around January 22, only rarely appearing before January 13 or after February 6.
Growing Degree Days
The average daily incident shortwave solar energy experiences significant seasonal variation over the course of the year.
The brighter period of the year lasts for 2.9 months, from April 6 to July 1, with an average daily incident shortwave energy per square meter above 6.0 kWh. The brightest day of the year is May 14, with an average of 6.8 kWh.
The darker period of the year lasts for 2.8 months, from November 11 to February 5, with an average daily incident shortwave energy per square meter below 3.6 kWh. The darkest day of the year is December 21, with an average of 2.8 kWh.
Average Daily Incident Shortwave Solar Energy
For the purposes of this report, the geographical coordinates of Beaufort are 32.432 deg latitude, -80.670 deg longitude, and 7 ft elevation.
The topography within 2 miles of Beaufort is essentially flat, with a maximum elevation change of 26 feet and an average elevation above sea level of 8 feet. Within 10 miles is also essentially flat (39 feet). Within 50 miles is essentially flat (302 feet).
The area within 2 miles of Beaufort is covered by water (42%), herbaceous vegetation (39%), and artificial surfaces (14%), within 10 miles by herbaceous vegetation (43%) and water (33%), and within 50 miles by water (38%) and trees (30%).
This report illustrates the typical weather in Beaufort, based on a statistical analysis of historical hourly weather reports and model reconstructions from January 1, 1980 to December 31, 2016.
Temperature and Dew Point
There are 2 weather stations near enough to contribute to our estimation of the temperature and dew point in Beaufort.
For each station, the records are corrected for the elevation difference between that station and Beaufort according to the International Standard Atmosphere , and by the relative change present in the MERRA-2 satellite-era reanalysis between the two locations.
The estimated value at Beaufort is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Beaufort and a given station.
The stations contributing to this reconstruction are: Beaufort County Airport (61%, 4.0 kilometers, southeast) and Beaufort Mcas (39%, 7 kilometers, northwest).
Time zones for airports and weather stations are provided by AskGeo.com .