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Contents
- The climate of Kiawah Island
- The best time to visit Kiawah Island
- The worst time to visit Kiawah Island
- Spring weather in Kiawah Island
- Summer weather in Kiawah Island
- Autumn weather in Kiawah Island
- Winter weather in Kiawah Island
- Weather in January
- Weather in February
- Weather in March
- Weather in April
- Weather in May
- Weather in June
- Weather in July
- Weather in August
- Weather in September
- Weather in October
- Weather in November
- Weather in December
- Frequently asked questions
- Average temperature
- Average pressure
- Average wind speed
- Average humidity
- Average rainfall
- Average rainfall days
- Average snowfall days
- Average daylight
- Average sunshine
- Average sunshine days
- Average UV index
- Average cloud cover
- Average visibility
The climate of Kiawah Island
Geographically located in the southeastern United States, Kiawah Island falls under Cfa in the Köppen climate classification, reflecting a humid subtropical climate. This climate type indicates consistent, year-round precipitation and moderate to high temperatures. The weather remains fairly mild during the winter months while the summer months bring about a considerable warmth, coupled with high humidity levels.
A close inspection of the weather parameters reveals that the annual temperature on this island ranges from 46.4°F (8°C) to 86.2°F (30.1°C). The minimum average monthly temperature is noted during January at 46.4°F (8°C), gradually building up to a peak at 86.2°F (30.1°C) in July. Relative humidity fluctuates slightly throughout the year, moving within the realm of 73% to 78%, displaying a consistently high level of moisture in the air.
Regular rainfall marks the climate of Kiawah Island with monthly averages extending from 0.24" (6mm) to 1.93" (49mm). The height of rainfall is achieved in the month of August, while February witnesses the least amount of precipitation. Emphasizing the subtropical climate, periods of snowfall are nearly non-existent. The hours of daylight portray an increasing trend from January to June, during which the duration expands from 10.3 hours to 14.3 hours, followed by a curtailed pattern until December.
A close inspection of the weather parameters reveals that the annual temperature on this island ranges from 46.4°F (8°C) to 86.2°F (30.1°C). The minimum average monthly temperature is noted during January at 46.4°F (8°C), gradually building up to a peak at 86.2°F (30.1°C) in July. Relative humidity fluctuates slightly throughout the year, moving within the realm of 73% to 78%, displaying a consistently high level of moisture in the air.
Regular rainfall marks the climate of Kiawah Island with monthly averages extending from 0.24" (6mm) to 1.93" (49mm). The height of rainfall is achieved in the month of August, while February witnesses the least amount of precipitation. Emphasizing the subtropical climate, periods of snowfall are nearly non-existent. The hours of daylight portray an increasing trend from January to June, during which the duration expands from 10.3 hours to 14.3 hours, followed by a curtailed pattern until December.
The best time to visit Kiawah Island
With consideration to the various climatological indicators, April to June emerges as the ideal time to explore Kiawah Island. During these months, the average high temperature ranges from 71.4°F (21.9°C) to 84.2°F (29°C), constituting an ambient and comfortable atmosphere. The rainfall during this period is also comparatively lower than the other months, with an average monthly precipitation between 0.47" (12mm) and 0.71" (18mm). Furthermore, these months exhibit the maximum daylight hours, extending from 13 hours to 14.3 hours, ensuring more time for outdoor enjoyments.
The worst time to visit Kiawah Island
Planning a visit during the late summer and early autumn months, particularly from July to September, may not be ideal. These months carry the highest temperatures of the year with averages from 86°F (30°C) to 86.2°F (30.1°C) that could potentially create an uncomfortable hot environment. Moreover, the occurrence of rainfall is the highest during these months, from 1.1" (28mm) to 1.93" (49mm), enhancing the level of humidity.
Spring weather in Kiawah Island
Springtime on Kiawah Island, capturing the months from March to May, presents a rehabilitation from the mild winter temperatures. The spectral bounds of temperature start from 55.1°F (12.8°C) in March and climb up to 69.3°F (20.7°C) in May, thus fostering a moderate climate. The occurrence of rainfall tends to rise during this season from 0.39" (10mm) in March to 0.47" (12mm) in May.
Summer weather in Kiawah Island
Summer on Kiawah Island spans from June to August and is characterized by pronounced warmth, coupled with increased humidity. The average high temperature is inclined towards its peak, ranging from 84.2°F (29°C) in June to 86.2°F (30.1°C) in July. Rainfall is frequent, with peaks in August at 1.93" (49mm).
Autumn weather in Kiawah Island
Autumn, encompassing September to November, presents a downward shift in temperature, starting from 74.3°F (23.5°C) in September and reaching 55.6°F (13.1°C) in November. This significant drop from summer temperatures introduces a cooler atmosphere. The rainfall measures follow a declining trend, starting from 1.3" (33mm) in September and dwindling to 0.51" (13mm) in November.
Winter weather in Kiawah Island
Winter on Kiawah Island from December through February is marked by mildly cooler temperatures. The average low temperature during this season ranges from 51.1°F (10.6°C) to 46.4°F (8°C). Despite the relatively low temperatures, snowfall rarely marks its presence on the Island. The relatively high humidity levels and increased cloud coverage contribute to the mild and wet weather during this season.
Weather in January
The New Year greets Kiawah Island with temperatures between 46.4°F (8°C) and 57°F (13.9°C). The weather this month leans slightly cooler than December. Breezy conditions are common, signaled by average wind speeds of 10.4mph (16.7km/h). Weather in January »
Weather in February
February weather in Kiawah Island brings a gentle rise in temperature from January. It gets slightly wetter too. The average wind speed remains consistent, adding a slight chill to the air. Notably, the relative humidity climbs to 75%, making the atmosphere a bit stuffy. Weather in February »
Weather in March
By March, Kiawah Island weather reveals its warmer side with temperatures ranging from 54.1°F (12.3°C) to 64.4°F (18°C). Slightly more rainfall can be observed compared with February. The climate continues to be breezy, with wind speeds comparable to those in the previous months. Weather in March »
Weather in April
April on Kiawah Island is characterized by higher temperature than March. A noticeable increase in the rainfall occurs this month. A slight uptick in wind speeds creates a balmy atmosphere, complementing the rising temperatures. The hours of daylight continue to increase, promising more sunny time. Weather in April »
Weather in May
May brings summer weather to Kiawah Island with an increase in temperature from previous months. The amount of rainfall decreases from April. The wind lessens a little bit, enhancing the warmth of the climate. In typical summer fashion, the day length reaches a high, providing abundant sunlight. Weather in May »
Weather in June
June at Kiawah Island can be characterized by high temperatures with June having the second highest rainfall of 1.14" (29mm). The wind slows down substantially compared to May. Despite the hot and wet conditions, the high sun exposure keeps the environment vibrant. Weather in June »
Weather in July
July, the hottest month of the year in Kiawah Island sees temperatures soaring from 78.4°F (25.8°C) to 86.2°F (30.1°C). The weather is marginally different from June's, with slightly less rainfall. However, there is no respite from the humidity. Weather in July »
Weather in August
In August, a gradual cooling trend begins in Kiawah Island, although temperatures remain high. The rainfall in August significantly increases compared with July, making it the wettest month. The winds slow down a bit, providing little relief from the warmth. Weather in August »
Weather in September
September in Kiawah Island witnesses a drop in temperature and rainfall from August. The wind picks up slightly, making the outdoors more comfortable. The days gradually become shorter, signaling the onset of fall. Ample sunshine keeps the Island alive, spelling favorable conditions for various events and festivities. Kiawah Island experiences a recorded average high-temperature of a moderately hot 82.6°F (28.1°C) in September, closely aligned with August's 86°F (30°C). Weather in September »
Weather in October
October sees a noticeable drop in temperature from the preceding month in Kiawah Island. The rainfall frequency decreases too. Wind speeds comparatively increase, making evenings surprisingly cooler. Despite fewer daylight hours, October is celebrated for its cozy and calm climate, encouraging the exploration of nature trails across the Island. October's arrival comes with a mild decrease in the average high-temperature, moving subtly from a moderately hot 82.6°F (28.1°C) in September to a still warm 75.2°F (24°C). Weather in October »
Weather in November
November in Kiawah Island experiences further decreases in temperature and rainfall from October. Wind speeds remain steady, offering a refreshing chill in the air. The days become even shorter, as the region prepares to welcome winter. Weather in November »
Weather in December
Wrapping up the year, December offers the coldest weather in Kiawah Island with temperatures between 51.1°F (10.6°C) to 60.6°F (15.9°C). The rainfall this month, recorded as 1.14" (29mm), matches that in June. Wind speeds slightly decrease, giving a calm and serene feel to the climate. Weather in December »
Updated: Jul 2, 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
What is the coldest time of year?
January is the month when Kiawah Island sees the average lowest temperatures, with a high of 57°F (13.9°C) and a low of 46.4°F (8°C).
What are the least humid months in Kiawah Island?
January, March and October, with an average relative humidity of 73%, are the least humid months.
What is the driest month?
The month with the least rainfall is January, when the rain falls for 5.7 days and typically collects 0.24" (6mm) of precipitation.
How much does it rain?
In Kiawah Island, during the entire year, the rain falls for 113.3 days and collects up to 10" (254mm) of precipitation.
When does it snow?
Months with snowfall are January and December.
What is the snowiest month?
The month with the most snowfall days is January, when snow falls for 0.2 days.
How many days does it snow?
Throughout the year, there are 0.3 snowfall days.
What is the month with the lowest UV index?
With an average maximum UV index of 3, January is the month with the lowest UV index.
When it does not snow?
February through November are months without snowfall in Kiawah Island.
When is Daylight Saving Time (DST) in Kiawah Island?
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.
What is the month with the highest UV index?
May through August, with an average maximum UV index of 7, are months with the highest UV index.
When are the longest days in Kiawah Island?
June has the longest days of the year, with an average of 14h and 18min of daylight.
What is the hottest time of year?
Kiawah Island's warmest month, July, registers temperatures that range from a high of 86.2°F (30.1°C) to a low of 78.4°F (25.8°C).
What month has the most sunshine?
July has the most sunshine of the year, with an average of 11h of sunshine.
What is the wettest month?
The month with the most rainfall is August, when the rain falls for 17.3 days and typically aggregates up to 1.93" (49mm) of precipitation.
What is the most humid month?
With an average relative humidity of 78%, December is the most humid month.
What is the month with the shortest days?
With an average of 10h and 0min of daylight, December has the shortest days of the year.
What is the month with the least sunshine?
With an average of 5.7h of sunshine, December has the least sunshine of the year.
Average temperature
Kiawah Island, SC
The warmest month (with the highest average high temperature) is July (86.2°F).
The month with the lowest average high temperature is January (57°F).
The months with the highest average low temperature are July and August (78.4°F).
The coldest month (with the lowest average low temperature) is January (46.4°F).
Average pressure
Kiawah Island, 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:
29.99"Hg - Average pressure in September:
30"Hg - Average pressure in October:
30.02"Hg - Average pressure in November:
30.12"Hg - Average pressure in December:
30.12"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.98"Hg).
Average wind speed
Kiawah Island, SC
- Average wind speed in January:
10.4mph - Average wind speed in February:
10.6mph - Average wind speed in March:
10.6mph - Average wind speed in April:
10.7mph - Average wind speed in May:
9.8mph - Average wind speed in June:
9.3mph
- Average wind speed in July:
9.4mph - Average wind speed in August:
8.8mph - Average wind speed in September:
9.6mph - Average wind speed in October:
10mph - Average wind speed in November:
10.3mph - Average wind speed in December:
10.2mph
The windiest month (with the highest average wind speed) is April (10.7mph).
The calmest month (with the lowest average wind speed) is August (8.8mph).
Average humidity
Kiawah Island, SC
The month with the highest relative humidity is December (78%).
The months with the lowest relative humidity are January, March and October (73%).
Average rainfall
Kiawah Island, SC
- Average rainfall in January:
0.24" - Average rainfall in February:
0.35" - Average rainfall in March:
0.39" - Average rainfall in April:
0.71" - Average rainfall in May:
0.47" - Average rainfall in June:
1.14"
The wettest month (with the highest rainfall) is August (1.93").
The driest month (with the least rainfall) is January (0.24").
Average rainfall days
Kiawah Island, SC
- Average rainfall days in January:
5.7 days - Average rainfall days in February:
6 days - Average rainfall days in March:
6.9 days - Average rainfall days in April:
8.8 days - Average rainfall days in May:
9.9 days - Average rainfall days in June:
13.4 days
- Average rainfall days in July:
15.8 days - Average rainfall days in August:
17.3 days - Average rainfall days in September:
11.3 days - Average rainfall days in October:
6.8 days - Average rainfall days in November:
5.2 days - Average rainfall days in December:
6.2 days
The month with the highest number of rainy days is August (17.3 days).
The month with the least rainy days is November (5.2 days).
Average snowfall days
Kiawah Island, SC
- Average snowfall days in January:
0.2 days - Average snowfall days in February:
0 days - Average snowfall days in March:
0 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:
0.1 days
The month with the highest number of snowfall days is January (0.2 days).
The months with the least snowfall days are February, March, April, May, June, July, August, September, October and November (0 days).
Average daylight / Average sunshine
Kiawah Island, SC
- Average daylight in January:
10h and 2min - 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 5min - Average daylight in June:
14h and 2min
- Average daylight in July:
14h and 0min - Average daylight in August:
13h and 2min - Average daylight in September:
12h and 2min - Average daylight in October:
11h and 2min - Average daylight in November:
10h and 3min - 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 5min - Average sunshine in February:
6h and 5min - Average sunshine in March:
7h and 5min - Average sunshine in April:
10h and 0min - Average sunshine in May:
10h and 3min - Average sunshine in June:
10h and 5min
- Average sunshine in July:
11h and 0min - Average sunshine in August:
10h and 5min - Average sunshine in September:
9h and 1min - Average sunshine in October:
6h and 4min - Average sunshine in November:
6h and 1min - Average sunshine in December:
5h and 4min
The month with the most sunshine is July (Average sunshine: 11h and 0min).
The month with the least sunshine is December (Average sunshine: 5h and 42min).
Average sunshine days
Kiawah Island, SC
- Average sunshine days in January:
23.9 days - Average sunshine days in February:
20.9 days - Average sunshine days in March:
23.3 days - Average sunshine days in April:
20 days - Average sunshine days in May:
18.4 days - Average sunshine days in June:
11.7 days
- Average sunshine days in July:
10.8 days - Average sunshine days in August:
8.5 days - Average sunshine days in September:
15.1 days - Average sunshine days in October:
22.3 days - Average sunshine days in November:
23.6 days - Average sunshine days in December:
23.5 days
The month with the most sunshine days is January (23.9 days).
The month with the least sunshine days is August (8.5 days).
Average UV index
Kiawah Island, SC
The months with the highest UV index are May, June, July and August (UV index 7).
The month with the lowest UV index is January (UV index 3).
Average cloud cover
Kiawah Island, SC
The month with the most cloud cover is December (Cloud cover 39).
The months with the least cloud cover are June and July (Cloud cover 25).
Average visibility
Kiawah Island, 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).
Kiawah Island, South Carolina, USA
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