June Weather in Charleston, United States

Last updated: February 24, 2025

June in Charleston, United States, is characterized by warm temperatures and high humidity, making it a quintessential summer month. The maximum temperature can soar up to 35°C (95°F), while the average hovers around a comfortable 26°C (79°F). Despite the heat, nights offer a cooler respite, dipping to a minimum of 16°C (61°F). However, be prepared for frequent rain, as the city experiences about 150 mm (5.9 in) of precipitation spread over 19 days, contributing to the 75% humidity that defines the season. Whether you're exploring historic sites or enjoying the vibrant local culture, June's weather adds a distinctive charm to Charleston.

June Temperature in Charleston

In June, Charleston experiences a notable shift into summer, with temperatures ranging from a minimum of 16°C (61°F) to a sizzling maximum of 35°C (95°F). The average temperature settles at a warm 26°C (79°F), making it a prime time for outdoor activities and beach outings. Compared to the preceding months, June marks a clear upward trend in warmth, as the city transitions from the milder temperatures of spring, which peak at 31°C (89°F) in April and 37°C (98°F) in May. As humidity begins to rise, Charleston's vibrant atmosphere becomes even more alluring, inviting visitors and locals alike to bask in the warmth and charm of this historic city.

June Weather in Charleston: Daily Temperature Highs, Lows, and Averages

The chart illustrates June temperature patterns in Charleston, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec525760667479828178725954
Data source: Temperature data for Charleston generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

June Precipitation in Charleston

June in Charleston heralds the onset of a summer deluge, characterized by a significant uptick in precipitation. With a precipitation total of 150 mm (5.9 in) over the month, June stands out as a pivotal rain-soaked period, laying the groundwork for even wetter July and August. Notably, the city experiences rain on 19 days, reflecting the peak of its wet season and contributing to the lush greenery that defines this region. This pattern signifies a marked increase from the preceding months, where May recorded a total of 87 mm (3.4 in) over 9 days. As temperatures rise, the frequent showers act as a refreshing balm against the heat, although they also signal a shift towards the more humid and tropical climate that characterizes Charleston's summer months.

June Precipitation Trends in Charleston

The chart displays monthly precipitation patterns in Charleston, with values for each month alongside June's data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how June's conditions compare to those of other months.
JanFebMarAprMayJunJulAugSepOctNovDec597860101871501871831767993127
Data source: Precipitation data for June generated using information from the Copernicus Climate Change Service.
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June Humidity in Charleston

As the summer heat sets in, June in Charleston experiences a notable transition in humidity levels. Following a gradual decline from the year's peak in January at 86%, humidity reaches a more moderate 75% by June. This dip reflects the city's shift towards warmer months, laying the groundwork for the rising humidity seen in July and August, which hover around 80%. Interestingly, while June presents a comfortable respite, the humidity begins to creep back up as the season progresses, foreshadowing the sultry conditions typical of Charleston's late summer. This cycle underscores the region's unique maritime climate, where balmy breezes offer both relief and anticipation of the humidity to come.

June Average Humidity in Charleston

This chart illustrates the average monthly humidity levels in Charleston, with June's data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, allowing you to see how June's humidity levels compare to other months.
JanFebMarAprMayJunJulAugSepOctNovDec86%81%81%79%75%75%80%81%83%78%85%87%
Data source: Humidity data for June generated using information from the Copernicus Climate Change Service.

June UV Index in Charleston

In June, Charleston experiences a peak in sunshine, with a UV Index of 11 marking it as an extreme exposure month, mirroring the conditions seen in May. This trend of high UV levels underscores the importance of sun protection, as residents and visitors face a rapid burn time of just 10 minutes if unprotected. Following a gradual increase from the moderate levels in January, the UV Index escalates significantly as the year progresses, emphasizing the need for vigilance during the summer months. With a consistent extreme rating extending well into August, it's crucial to stay informed and apply necessary precautions. For detailed insights on UV conditions, visit Charleston UV Index.

Maximum UV Index Levels in Charleston for June

The chart shows the monthly maximum UV Index (UVI) for Charleston in June, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues.
JanFebMarAprMayJunJulAugSepOctNovDec47910111111119864
Data source: Charleston June UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

June Sunshine in Charleston

In June, Charleston basks in a glorious 316 hours of sunshine, contributing to a vibrant atmosphere that calls for outdoor gatherings and seaside adventures. As spring transitions to summer, there's a noticeable peak in sunlight following the month of May, which recorded the highest sun exposure of the year at 336 hours. Interestingly, June maintains a robust amount of sunshine, though it slightly dips before reaching the sun-soaked heights of July, which boasts 341 hours. This sunny trend not only enriches the charm of the city but also sets the stage for memorable summer experiences. With daylight gradually tapering off as the year progresses, the mid-year sunshine offers a perfect moment to embrace Charleston's outdoor allure before the days get shorter.

Monthly Sunshine Duration in Charleston: June Highlighted

The June sunshine duration represents the total number of hours Charleston experiences direct sunlight during the month of June, excluding cloudy or obstructed periods. This chart compares the sunshine duration of June with the other months of the year.
JanFebMarAprMayJunJulAugSepOctNovDec186h213h275h306h336h316h341h314h300h288h247h217h
Data source: Charleston June Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Charleston During June

In June, the likelihood of sunny weather in Charleston takes a noticeable dip, with only 29% chance of sun—making it one of the cloudier months of the year. This shift follows a modest uptick in sun exposure during the spring, particularly in April and May, when chances increased to 56% and 52%, respectively. As summer arrives, July and August also show lower probabilities of sunshine at 34% and 30%. Interestingly, the trend of less sunny weather persists until the return of fall, where the chances gradually rebound, reaching 51% by September. Overall, while June may not be the sunniest of months, the fluctuating patterns highlight a dynamic seasonal transition in Charleston's weather.

Percentage of Sunny Days in June in Charleston

The chart illustrates the percentage of sunny days in Charleston throughout the year, with June highlighted. It highlights the variation in sunshine across each month and provides an overview of the typical frequency of sunny days, offering insights into how often Charleston experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec45%39%38%56%52%29%34%30%51%50%62%45%
Data source: Charleston June chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Charleston in June

As summer approaches, June in Charleston shines with an impressive 14 hours of daylight, marking the height of the year’s sunlit days. This gradual increase from the 10 hours in January reflects the city's journey through the seasons, emphasizing a steady build-up in daylight duration as spring unfolds. April and May herald a delightful transition with 13 hours of sunlight, setting the stage for the longer days of summer. Following June, daylight begins to wane slightly, with July mirroring its predecessor before a gentle decline in August and onward. This rhythmic fluctuation showcases Charleston's vibrant nature, where each season offers its own unique charm bathed in sunlight.

Average Daylight Hours in Charleston for June

The chart illustrates the variation in daylight duration in Charleston throughout the year, with June highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec10h 14m11h11h 59m13h13h 51m14h 16m14h 2m13h 17m12h 19m11h 19m10h 26m10h
Data source: Charleston daylight hours, calculated by summing the hours between sunrise and sunset for each day.

June Winds in Charleston

As summer unfolds in Charleston, June brings a gentle breath of wind, with an average speed of 3.7 m/s (8 mph). This marks a slight dip from the previous months, highlighting a trend of diminishing breezes as the season progresses, reaching its lowest point in July at 3.2 m/s (7 mph). Interestingly, while June's winds are softer compared to spring's consistency around 4.0 m/s, they still offer a refreshing reprieve from the rising temperatures. As the summer heat sets in, the calming winds act as a subtle reminder of Charleston's coastal charm, an integral part of its tranquil atmosphere that continues to draw visitors seeking solace from the sweltering heat.

Average June Wind Speed in Charleston

The chart displays monthly wind speed patterns in Charleston, with values for each month shown alongside June's data, which is highlighted for easy comparison. It illustrates the average wind speed, offering insights into how June's wind conditions compare to the rest of the year.
JanFebMarAprMayJunJulAugSepOctNovDec3.93.84.03.94.03.7 m/s3.22.82.93.23.63.5
Data source: Charleston June wind data, generated using information from the Copernicus Climate Change Service.

How June Weather in Charleston Compares to Other Months

The weather in Charleston changes throughout the year, offering a unique experience in each season. Below is a month-by-month comparison of June's weather with other months, highlighting differences in temperature, precipitation, and other key factors. Click on each section to discover seasonal trends in Charleston and find detailed weather information for every month.

June and January present starkly contrasting weather patterns. In June, temperatures range from a minimum of 16°C (61°F) to a scorching maximum of 35°C (95°F), accompanied by high humidity at 75% and significant precipitation of 150 mm (5.9 in) over 19 days. Conversely, January experiences much colder conditions, with temperatures plummeting to a minimum of -13°C (9°F) and reaching a maximum of 26°C (79°F). Despite being the driest month, January still sees some precipitation, amounting to 59 mm (2.3 in) over just 7 days, all while maintaining a high humidity level of 86%. For more details, you can check Charleston weather in January.

When comparing the weather in June and February, significant differences are evident. June typically boasts much warmer temperatures, with a minimum of 16°C (61°F), an average of 26°C (79°F), and a maximum reaching up to 35°C (95°F). In contrast, February experiences much cooler conditions, starting at a low of -2°C (29°F) and averaging around 14°C (57°F), with a maximum of 26°C (79°F). Precipitation levels also vary, with June seeing 150 mm (5.9 in) over 19 days, while February records only 78 mm (3.1 in) across 9 days. Interestingly, February has a slightly higher humidity level at 81%, compared to June’s 75%. For more insights into February's weather patterns, you can check Charleston weather in February.

June and March present strikingly different weather characteristics, reflecting the transitions between spring and summer. In June, temperatures soar with an average of 26°C (79°F), peaking at 35°C (95°F), accompanied by a significant 150 mm (5.9 in) of precipitation over 19 days, creating a humid environment at 75%. In contrast, March has much cooler temperatures, with an average of 15°C (60°F) and maximums reaching 28°C (82°F), while experiencing far less rainfall at 60 mm (2.4 in) over just 6 days, albeit with slightly higher humidity at 81%. For a detailed look at the weather patterns, you can visit Charleston weather in March.

When comparing the weather in June and April, it's clear that June is much warmer and wetter. June experiences an average temperature of 26°C (79°F), with highs reaching up to 35°C (95°F), while April has a milder average of 19°C (66°F) with maximum temperatures around 31°C (89°F). Additionally, June sees significantly more rainfall, with a total of 150 mm (5.9 in) spread over 19 days compared to April's 101 mm (4.0 in) over just 8 days. Despite the increase in precipitation, humidity levels are slightly lower in June at 75%, compared to 79% in April. For more details on April weather, visit Charleston weather in April.

In comparing the weather of June to that of May, we see a significant increase in both average temperatures and precipitation. June has a minimum temperature of 16°C (61°F) and an average of 26°C (79°F), while May starts cooler with a minimum of 9°C (49°F) and an average of 23°C (74°F). Notably, June also experiences more rainfall, with 150 mm (5.9 in) over 19 days compared to May's 87 mm (3.4 in) over just 9 days. Despite the increased rain in June, both months feature a consistent humidity level of 75%. For a closer look at May's climate specifics, visit Charleston weather in May.

In comparing the weather of June and July, we find a noticeable increase in both temperature and humidity. June tends to have a minimum temperature of 16°C (61°F) and an average of 26°C (79°F), while July sees a rise with a minimum of 20°C (69°F) and an average of 28°C (82°F). The maximum temperatures are quite similar between the two months, with June peaking at 35°C (95°F) and July slightly lower at 34°C (94°F). However, July experiences higher overall precipitation, with 187 mm (7.4 in) over 20 days compared to June's 150 mm (5.9 in) over 19 days, resulting in a more humid environment, with July's humidity reaching 80% compared to June's 75%. For more details on July's weather, you can visit Charleston weather in July.

In June, the weather features a broader temperature range, with minimums around 16°C (61°F) and maximums reaching 35°C (95°F), while the average temperature hovers at 26°C (79°F). This month experiences significant rainfall, with around 150 mm (5.9 in) of precipitation over 19 days and a humidity level of 75%. In contrast, August sees slightly warmer minimum temperatures at 21°C (70°F) and a similar maximum of 35°C (95°F), with an average of 27°C (81°F). Precipitation increases to 183 mm (7.2 in) across 21 days, along with a rise in humidity to 81%. For more insights on August weather, check out Charleston weather in August.

When comparing the weather in June and September, both months exhibit similar average temperatures, hovering around 26°C (79°F). However, June tends to be slightly warmer, with minimum temperatures of 16°C (61°F) compared to September's 14°C (57°F). Precipitation levels are higher in September, with 176 mm (6.9 in) over 14 days, compared to June's 150 mm (5.9 in) over 19 days. Additionally, humidity is marginally higher in September at 83%, compared to 75% in June. For more detailed weather insights, you can check out Charleston weather in September.

When comparing the weather in June and October, notable contrasts emerge. June typically experiences a warm climate with minimum temperatures around 16°C (61°F) and maximum temperatures reaching as high as 35°C (95°F), accompanied by significant rainfall totaling 150 mm (5.9 in) over 19 days, resulting in high humidity levels of 75%. In contrast, October presents a cooler environment with minimum temperatures dropping to 3°C (38°F) while averaging 22°C (72°F) and peaking at 31°C (89°F). Additionally, October has less precipitation, with 79 mm (3.1 in) over just 9 days and a slightly higher humidity rate of 78%. For a more detailed look at Charleston's weather in October, you can visit Charleston weather in October.

June and November present a striking contrast in weather conditions. In June, temperatures range from a minimum of 16°C (61°F) to a maximum of 35°C (95°F), with an average of 26°C (79°F), making it a warm and humid month with 150 mm (5.9 in) of precipitation over 19 rainy days. In stark contrast, November experiences cooler temperatures, with a minimum of -1°C (31°F), an average of 15°C (59°F), and a maximum of 28°C (84°F). Additionally, November features significantly less rainfall, totaling 92 mm (3.6 in) across just 8 days, and slightly higher humidity at 85%. This shift from June's heat to November's crispness is evident in the overall climate experience. For more information, check out Charleston weather in November.

June and December present contrasting weather experiences. In June, temperatures rise with a minimum of 16°C (61°F) and an average of 26°C (79°F), peaking at a hot 35°C (95°F). This month is characterized by high humidity at 75% and significant rainfall, averaging 150 mm across 19 days. Conversely, December brings a much cooler climate with temperatures ranging from a minimum of -3°C (28°F) to a maximum of 25°C (77°F), averaging around 12°C (54°F). Precipitation is lower in December, totaling 127 mm over 9 days, but humidity is still high at 87%. For more detailed information, you can refer to Charleston weather in December.

Compare Charleston's Climate with Cities Worldwide

Conclusion: What to Expect From June Weather in Charleston

June in Charleston marks the transition into the sultry embrace of summer, with warmer temperatures dominating the landscape compared to earlier months. While the average daily temperature rises, the humidity level also increases, creating a sticky atmosphere that can be both invigorating and challenging. With almost two-thirds of the month experiencing rainfall, it’s a time where short, intense downpours are commonplace, refreshing the air and adding a unique charm to this Southern city. For a deeper understanding of the weather pattern fluctuations throughout the year, explore more at Charleston Climate.