Climate and monthly weather forecastHanahan, SC
Climate and monthly weather forecast
The climate of Hanahan
Positioned within the confines of South Carolina in the United States, Hanahan demonstrates climatic characteristics of the Köppen climate classification Cfa, commonly referred to as a Humid subtropical climate, with no dry season. A consistent trait throughout the year is the relative humidity which hovers around 74% per year on average, spiking to 77% in December while dipping to 72% in March for the driest moments.In terms of temperature, January reports the lowest figures with lows from 41.5°F (5.3°C) to 56.8°F (13.8°C), while July stakes a claim as the warmest month with temperatures ranging from 75.7°F (24.3°C) to 90.5°F (32.5°C). Meanwhile, annual fluctuations in atmospheric pressure are minimal, staying close to the 30inHg (1015.9mbar) mark. Wind speeds average to about 6.9mph (11.1km/h), breaching the 7mph (11.3km/h) mark during the cooler months, specifically from January to April, and then again in November and December.
Interestingly, Hanahan's precipitation pattern differs slightly from other subtropical climates, featuring its wettest month in August with 6.22" (158mm) of rainfall over an average of 23.4 days. The driest month, November, witnesses 1.85" (47mm) of rainfall scattered across an average of 8.2 days. As for snowfall, it is a rarity but can be seen in January and December with a meager volume of 0.08" (2mm) and 0.04" (1mm) on average respectively.
The best time to visit Hanahan
Given the humid subtropical climate in Hanahan, the months ranging from April to June tend to be the most favorable to visit. During this period, average temperatures range from 58.5°F (14.7°C) to 87.8°F (31°C), providing warm weather suitable for outdoor activities. Furthermore, although the relative humidity hovers between 73% to 75%, rainfall remains relatively moderate compared to the latter months of the year, making this period comparatively drier.The worst time to visit Hanahan
Based on Hanahan's climatological parameters, the less favorable time for a visit would be from July to September. The summer heat reaches its peak during these months, with temperatures from 73°F (22.8°C) to 90.5°F (32.5°C) together with high humidity levels. Moreover, these months coincide with the wettest period in Hanahan, epitomized by August's heavy rainfall of 6.22" (158mm) over 23.4 days on average.Spring weather in Hanahan
Spring in Hanahan, occurring between March and May, ushers in the comforting warmth as the average temperature progressively rises from 50.5°F (10.3°C) to 81.3°F (27.4°C) over this period. Concurrently, daylight duration extends from 12 hours in March to 13.9 hours in May. This season is characterized by escalating rainfall from 2.28" (58mm) in March to 3.07" (78mm) and 2.95" (75mm) in April and May respectively, offering a slightly wetter atmosphere compared to the initial months of the year.Summer weather in Hanahan
Hanahan experiences summer between June and August. This season is characterized by high temperatures, with averages ranging from 73°F (22.8°C) to 90.5°F (32.5°C), and an increment in humidity from 74% to 76%. Notably, this is the wettest period of the year, receiving 3.94" (100mm) to 6.22" (158mm) of rainfall with the frequency of rainy days peaking at 23.4 days in August. Despite this, daylight extends to an ample 14.3 hours in June, but slightly recedes to 13.3 hours by end of August.Autumn weather in Hanahan
Autumn in Hanahan spans from September to November. This time of the year signals a less severe but still warm climate with temperatures from 75.4°F (24.1°C) to 66.2°F (19°C). There is a slight reduction in rainfall volume starting at 4.02" (102mm) in September and decreasing to 1.85" (47mm) in November, provide slightly drier conditions. Meanwhile, daylight hours shorten notably from 12.4 hours in September to 10.5 hours in November.Winter weather in Hanahan
Winter in Hanahan takes place between December and February, introducing lower temperatures from 45.9°F (7.7°C) to 60.6°F (15.9°C) alongside an overall drop in daylight to ten hours in December and January. Despite the lower temperatures, the weather remains relatively mild when compared to other regions, with a minimal snowfall of 0.04" (1mm) in December and 0.08" (2mm) in January. Moreover, despite being colder months, rainfall maintains a moderate level, averaging 4.17" (106mm) in December and 1.46" (37mm) in January.Weather in January
In Hanahan, South Carolina, January is characterized by colder temperatures, low rainfall, and a relatively low amount of sunlight. It should be noted that the month comes with the lowest amount of daylight hours, standing merely at 10.3 hours. Weather in January »Weather in February
There's a noticeable shift in climate conditions in Hanahan from January to February. While February continues the trend of cold weather from January, the 0.28" (7mm) of snowfall in February, combined with colder temperatures, can turn the city into a winter wonderland. Weather in February »Weather in March
March kicks off the spring season in Hanahan with longer days and warming temperatures. Compared to February, March is notably warmer but it carries much more rainfall, coming in at 2.28" (58mm). Significant weather changes occurring in March can result in a variety of outdoor activities that were seldom feasible in the colder months of January and February. Weather in March »Weather in April
April ushers in significant weather changes in Hanahan with the environment becoming distinctly more spring-like. With the highest rainfall in the first half of the year at 3.07" (78mm), April is a wet month, bringing vibrant colors and greenery back to the city. Weather in April »Weather in May
The warming trend that begins from March reaches its peak in May, setting the stage for the upcoming summer. The high temperatures of May soaring up to 81.3°F (27.4°C) make this the first genuinely warm month of the year in Hanahan. Weather in May »Weather in June
June signifies the advent of summer in Hanahan with high temperatures and an increase in rainfall and humidity. The month notably records a substantial increase in rainfall to 3.94" (100mm), indicating quite a wet start to the summer. Weather in June »Weather in July
July is the heart of the summer season in Hanahan; it holds the highest temperatures and significant rainfall. In this period, temperatures reach a high, veering up to 90.5°F (32.5°C), making it the warmest month of the year. When compared with June, July carries a similar weather pattern but with slightly higher temperatures and increased rainfall. Weather in July »Weather in August
August follows the summer trend in Hanahan with hot temperatures and significant rainfall, but it stands out with the most precipitation in the year leading up to 6.22" (158mm). The prolonged warm temperatures and high humidity might make outdoor activities less favourable in August compared to July. Weather in August »Weather in September
In Hanahan, September acts as a buffer between the scorching summer and the onset of fall, with weather conditions beginning to moderate. Compared to August, September experiences a sharp reduction in rainfall, amounting to 4.02" (102mm), and a bit cooler temperatures. Weather in September »Weather in October
October brings the fall season to Hanahan, characterized by a drop in temperatures and decreased daylight hours. Compared to September, October is distinctly cooler and less rainy, totaling a rainfall of 2.99" (76mm), which makes it more comfortable for outdoor exploration. Weather in October »Weather in November
November presents a notable shift in weather conditions in Hanahan as temperatures continuously drop, making it evident winter is right around the corner. With a stark decrease in average high temperatures to 66.2°F (19°C) from October, the daily temperatures decline significantly. Weather in November »Weather in December
Completing a calendar year in Hanahan, December comes with the onset of winter, which introduces lower temperatures and an increase in rainfall. With a trivial amount of snowfall, just 0.04" (1mm), December weather conditions incorporate some aspects of winter without reaching severe cold conditions. Weather in December »Updated: Jul 14, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
January, with average temperatures reaching a high of 56.8°F (13.8°C) and a low of 41.5°F (5.3°C), is the coldest month.
The months with the lowest humidity in Hanahan are January and March, with an average relative humidity of 72%.
The month with the least rainfall is January, when the rain falls for 10.1 days and typically collects 1.46" (37mm) of precipitation.
In Hanahan, during the entire year, the rain falls for 172.6 days and collects up to 39.13" (994mm) of precipitation.
Months with snowfall are January, February and December.
Throughout the year, there are 0.9 snowfall days, and 0.39" (10mm) of snow is accumulated.
January is the month with the lowest UV index, with an average maximum UV index of 3.
February is the month with the most snowfall. Snow falls for 0.3 days and accumulates 0.28" (7mm) of snow.
March through November are months without snowfall.
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts, and the time zone changes from EST to EDT. Daylight Saving Time ends Sunday, November 3. 2024, at 2:00 am, and the time zone reverts from EDT to EST.
June has the longest days of the year, with an average of 14h and 18min of daylight.
June through August, with an average maximum UV index of 7, are months with the highest UV index.
Temperature readings reach their annual highs in July, averaging 90.5°F (32.5°C) and a minimum average of 75.7°F (24.3°C).
July has the most sunshine of the year, with an average of 10.9h of sunshine.
The month with the most rainfall is August, when the rain falls for 23.4 days and typically aggregates up to 6.22" (158mm) of precipitation.
The most humid month is December, with an average relative humidity of 77%.
December has the shortest days of the year in Hanahan, with an average of 10h and 0min of daylight.
With an average of 5.6h of sunshine, December has the least sunshine of the year.
Average temperature
Hanahan, SC
The warmest month (with the highest average high temperature) is July (90.5°F).
The month with the lowest average high temperature is January (56.8°F).
The month with the highest average low temperature is July (75.7°F).
The coldest month (with the lowest average low temperature) is January (41.5°F).
Average pressure
Hanahan, SC
- Average pressure in January:
30.14"Hg - Average pressure in February:
30.11"Hg - Average pressure in March:
30.09"Hg - Average pressure in April:
30.03"Hg - Average pressure in May:
30.03"Hg - Average pressure in June:
29.98"Hg
- Average pressure in July:
30"Hg - Average pressure in August:
29.98"Hg - Average pressure in September:
30"Hg - Average pressure in October:
30.03"Hg - Average pressure in November:
30.12"Hg - Average pressure in December:
30.13"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The months with the lowest atmospheric pressure are June and August (29.98"Hg).
Average wind speed
Hanahan, SC
- Average wind speed in January:
7.1mph - Average wind speed in February:
7.4mph - Average wind speed in March:
7.4mph - Average wind speed in April:
7.6mph - Average wind speed in May:
6.9mph - Average wind speed in June:
6.3mph
- Average wind speed in July:
6.3mph - Average wind speed in August:
5.8mph - Average wind speed in September:
6.5mph - Average wind speed in October:
6.8mph - Average wind speed in November:
6.9mph - Average wind speed in December:
6.9mph
The windiest month (with the highest average wind speed) is April (7.6mph).
The calmest month (with the lowest average wind speed) is August (5.8mph).
Average humidity
Hanahan, SC
The month with the highest relative humidity is December (77%).
The months with the lowest relative humidity are January and March (72%).
Average rainfall
Hanahan, SC
- Average rainfall in January:
1.46" - Average rainfall in February:
2.09" - Average rainfall in March:
2.28" - Average rainfall in April:
3.07" - Average rainfall in May:
2.95" - Average rainfall in June:
3.94"
- Average rainfall in July:
4.09" - Average rainfall in August:
6.22" - Average rainfall in September:
4.02" - Average rainfall in October:
2.99" - Average rainfall in November:
1.85" - Average rainfall in December:
4.17"
The wettest month (with the highest rainfall) is August (6.22").
The driest month (with the least rainfall) is January (1.46").
Average rainfall days
Hanahan, SC
- Average rainfall days in January:
10.1 days - Average rainfall days in February:
10.8 days - Average rainfall days in March:
11.9 days - Average rainfall days in April:
13.4 days - Average rainfall days in May:
15.6 days - Average rainfall days in June:
20.1 days
- Average rainfall days in July:
22.3 days - Average rainfall days in August:
23.4 days - Average rainfall days in September:
16.5 days - Average rainfall days in October:
9.5 days - Average rainfall days in November:
8.2 days - Average rainfall days in December:
10.8 days
The month with the highest number of rainy days is August (23.4 days).
The month with the least rainy days is November (8.2 days).
Average snowfall
Hanahan, SC
The month with the highest snowfall is February (0.28").
The months with the least snowfall are March, April, May, June, July, August, September, October and November (0").
Average snowfall days
Hanahan, SC
- Average snowfall days in January:
0.3 days - Average snowfall days in February:
0.3 days - Average snowfall days in March:
0.1 days - Average snowfall days in April:
0 days - Average snowfall days in May:
0 days - Average snowfall days in June:
0 days
- Average snowfall days in July:
0 days - Average snowfall days in August:
0 days - Average snowfall days in September:
0 days - Average snowfall days in October:
0 days - Average snowfall days in November:
0 days - Average snowfall days in December:
0.2 days
The months with the highest number of snowfall days are January and February (0.3 days).
The months with the least snowfall days are April, May, June, July, August, September, October and November (0 days).
Average daylight / Average sunshine
Hanahan, SC
- Average daylight in January:
10h and 18min - Average daylight in February:
11h and 0min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 0min - Average daylight in May:
13h and 54min - Average daylight in June:
14h and 18min
- Average daylight in July:
14h and 6min - Average daylight in August:
13h and 18min - Average daylight in September:
12h and 24min - Average daylight in October:
11h and 24min - Average daylight in November:
10h and 30min - Average daylight in December:
10h and 0min
The month with the longest days is June (Average daylight: 14h and 18min).
The month with the shortest days is December (Average daylight: 10h and 0min).
- Average sunshine in January:
5h and 42min - Average sunshine in February:
6h and 36min - Average sunshine in March:
7h and 36min - Average sunshine in April:
9h and 36min - Average sunshine in May:
10h and 12min - Average sunshine in June:
10h and 42min
- Average sunshine in July:
10h and 54min - Average sunshine in August:
10h and 36min - Average sunshine in September:
8h and 54min - Average sunshine in October:
6h and 36min - Average sunshine in November:
6h and 0min - Average sunshine in December:
5h and 36min
The month with the most sunshine is July (Average sunshine: 10h and 54min).
The month with the least sunshine is December (Average sunshine: 5h and 36min).
Average sunshine days
Hanahan, SC
- Average sunshine days in January:
19.7 days - Average sunshine days in February:
15.8 days - Average sunshine days in March:
16.8 days - Average sunshine days in April:
14.9 days - Average sunshine days in May:
12.9 days - Average sunshine days in June:
7.9 days
- Average sunshine days in July:
6.6 days - Average sunshine days in August:
5.8 days - Average sunshine days in September:
11.6 days - Average sunshine days in October:
20.5 days - Average sunshine days in November:
19.6 days - Average sunshine days in December:
19.1 days
The month with the most sunshine days is October (20.5 days).
The month with the least sunshine days is August (5.8 days).
Average UV index
Hanahan, SC
The months with the highest UV index are June, July and August (UV index 7).
The month with the lowest UV index is January (UV index 3).
Average cloud cover
Hanahan, SC
The month with the most cloud cover is December (Cloud cover 41).
The months with the least cloud cover are June and July (Cloud cover 27).
Average visibility
Hanahan, SC
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
