June Weather in Sullivans Island, United States

Last updated: February 24, 2025

June on Sullivan's Island offers a delightful coastal experience, with average temperatures hovering around 26°C (79°F), peaking at a warm 32°C (90°F) and dipping to a comfortable 18°C (64°F). Visitors can expect a humidity level of 78%, creating a tropical feel ideal for beach activities. However, it’s wise to be prepared for occasional rain, as the island sees an average precipitation of 144 mm (5.7 in) over 17 days throughout the month. Embrace the enchanting blend of sun and showers that defines June's charm on this picturesque island.

June Temperature in Sullivans Island

June brings a warm embrace to Sullivans Island, with temperatures marking a distinct shift towards summer. The month opens with a minimum temperature of 18°C (64°F), offering a comfortable start, while the average climbs to a pleasing 26°C (79°F). Days often peak at 32°C (90°F), highlighting the region's vibrant heat. This progression from the cooler early months to the warmth of June reflects a consistent trend, inviting beachgoers and outdoor enthusiasts. As the days lengthen, the island becomes a lively hub, perfectly suited for sun-soaked adventures and leisurely strolls along the shore.

June Weather in Sullivans Island: Daily Temperature Highs, Lows, and Averages

The chart illustrates June temperature patterns in Sullivans Island, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec535659667378818179736156
Data source: Temperature data for Sullivans Island 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 Sullivans Island

In June, Sullivans Island experiences a significant uptick in rainfall, with 144 mm (5.7 in) of precipitation spread over 17 days—the month’s wettest period. This marks a noticeable increase from the preceding months, reflecting the transition into a humid summer. As temperatures rise, the increase in precipitation sets the stage for the more intense rain that follows in July and August, which typically see even higher rainfall amounts recorded. This trend underscores a seasonal pattern where late spring and early summer bring increased moisture, leading to lush landscapes and the vibrant atmosphere characteristic of these months on the island.

June Precipitation Trends in Sullivans Island

The chart displays monthly precipitation patterns in Sullivans Island, 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.
JanFebMarAprMayJunJulAugSepOctNovDec6691621058214417119718885103142
Data source: Precipitation data for June generated using information from the Copernicus Climate Change Service.
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June Humidity in Sullivans Island

June in Sullivans Island sees a humidity level of 78%, consistent with the slightly lower humidity experienced in both May and April. This month marks a brief stabilization in moisture before the summer heat takes over, as July and August witness a noticeable rise to 82% and 81% respectively. The trend reveals a fascinating ebb and flow; while winter months like January and December peak at around 83% to 84%, the summer months gradually introduce higher humidity, creating a humid subtropical atmosphere. This seasonal cycle not only affects the climate but also enriches the island's vibrant ecosystem and charming coastal allure.

June Average Humidity in Sullivans Island

This chart illustrates the average monthly humidity levels in Sullivans Island, 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.
JanFebMarAprMayJunJulAugSepOctNovDec84%80%79%78%78%78%82%81%81%78%82%84%
Data source: Humidity data for June generated using information from the Copernicus Climate Change Service.

June UV Index in Sullivans Island

In June, Sullivans Island experiences an extreme UV Index of 11, carrying the same high risks as May. With a burn time of just 10 minutes, residents and visitors alike must prioritize sun protection during this month. This trend of rising UV levels is consistent, peaking in July with an even higher index of 12 before slightly declining in August. The preceding months show a gradual increase in UV levels from a moderate 4 in January, surging to 10 by April, indicating the heightened intensity of summer sun. As the UV Index remains at severe levels throughout this period, it's essential to stay informed and take necessary precautions. For more details on UV trends, visit Sullivans Island UV Index.

Maximum UV Index Levels in Sullivans Island for June

The chart shows the monthly maximum UV Index (UVI) for Sullivans Island 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.
JanFebMarAprMayJunJulAugSepOctNovDec47910111112119864
Data source: Sullivans Island 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 Sullivans Island

As June unfolds in Sullivans Island, the allure of sunshine is palpable, boasting 326 hours of radiant daylight. This marks a slight dip from the sun-drenched delight of May, which enjoyed 342 hours, yet June still keeps spirits high, offering a wealth of outdoor adventures. The trend throughout the spring months showcases a steady increase in sunny hours, peaking in July with 345 hours. This seasonal sunshine encourages beachgoers and nature lovers alike to soak up the vibrant coastal atmosphere, while the gradual decline into the late summer and fall months forewarns a cozy, yet less luminous, transition ahead. As the longest days of the year grace Sullivans Island, the community thrives under the warm embrace of summer sunshine.

Monthly Sunshine Duration in Sullivans Island: June Highlighted

The June sunshine duration represents the total number of hours Sullivans Island 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.
JanFebMarAprMayJunJulAugSepOctNovDec190h218h282h313h342h326h345h321h304h294h248h220h
Data source: Sullivans Island June Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Sullivans Island During June

In June, Sullivans Island experiences a notable decline in sunny weather, with the likelihood of clear skies dropping to 30%, the lowest in the year. This shift marks a stark contrast to the sunnier days of April and May, which boast probabilities of 57% and 53%, respectively. The summer months following June show only slight improvements, with July and August hovering around 36% and 32%. Interestingly, as the year progresses toward late fall, the chances of sunshine rebound, peaking in November at 61%. Thus, while June might not boast the best odds for sunny weather, it serves as a transitional period, paving the way for the brighter days that follow later in the year.

Percentage of Sunny Days in June in Sullivans Island

The chart illustrates the percentage of sunny days in Sullivans Island 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 Sullivans Island experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec45%39%38%57%53%30%36%32%52%50%61%47%
Data source: Sullivans Island June chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Sullivans Island in June

As summer approaches, Sullivans Island basks in the glorious extension of daylight, with June boasting 14 hours of sunlight. This trend marks a delightful peak following the gradual increase from 10 hours in January to a solid 13 hours in both April and May. The extended daylight during June not only enhances outdoor activities but also sets the stage for vibrant summer evenings. Interestingly, the length of daylight continues to hold steady through July, before slowly tapering off as August brings a slight reduction. Overall, the progression of daylight from winter's constraints to summer's exuberance underscores the island's seasonal rhythm, inviting both residents and visitors to revel in the sun-soaked splendor of summertime.

Average Daylight Hours in Sullivans Island for June

The chart illustrates the variation in daylight duration in Sullivans Island throughout the year, with June highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec10h 15m11h 1m12h13h13h 50m14h 15m14h 2m13h 17m12h 19m11h 19m10h 27m10h 1m
Data source: Sullivans Island daylight hours, calculated by summing the hours between sunrise and sunset for each day.

June Winds in Sullivans Island

In June, the winds on Sullivan's Island offer a gentle embrace, with an average speed of 4.9 m/s (11 mph). This month marks a subtle decline from the previous spring, where winds peaked at a consistent 5.2 m/s (12 mph) in both March and May. Transitioning into the summer, June's breezes provide a refreshing respite, hinting at the lighter winds ahead in July, which averages 4.4 m/s (10 mph). Overall, a trend emerges as the year progresses: the winds soften in the warmer months, creating a tranquil atmosphere perfect for beachgoers and outdoor enthusiasts alike. The June winds, while slightly diminished, continue to dance along the shores, adding to the island’s charm.

Average June Wind Speed in Sullivans Island

The chart displays monthly wind speed patterns in Sullivans Island, 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.
JanFebMarAprMayJunJulAugSepOctNovDec5.25.15.24.95.24.9 m/s4.43.94.04.35.04.7
Data source: Sullivans Island June wind data, generated using information from the Copernicus Climate Change Service.

How June Weather in Sullivans Island Compares to Other Months

The weather in Sullivans Island 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 Sullivans Island and find detailed weather information for every month.

June and January present contrasting weather experiences. In June, temperatures range from a minimum of 18°C (64°F) to a maximum of 32°C (90°F), averaging around 26°C (79°F). This month also sees significant rainfall, with 144 mm (5.7 in) spread over 17 days, accompanied by relatively high humidity at 78%. In contrast, January offers a cooler climate with temperatures ranging from a chilling -5°C (24°F) to a mild 21°C (70°F), averaging 12°C (53°F). Precipitation is less frequent in January, totaling 66 mm (2.6 in) over just 8 days, and humidity is slightly higher at 83%. For more details, you can check Sullivans Island weather in January.

June and February present stark contrasts in weather conditions. In June, temperatures typically range from a minimum of 18°C (64°F) to a maximum of 32°C (90°F), with an average of 26°C (79°F). This month experiences significant rainfall, with 144 mm (5.7 in) of precipitation spread over 17 days, contributing to a high humidity level of 78%. In contrast, February features much cooler temperatures, with lows around 2°C (36°F) and highs peaking at 21°C (70°F), averaging 14°C (57°F). The precipitation in February is lower, totaling 91 mm (3.6 in) over 11 days, while humidity remains relatively high at 79%. For more detailed information, you can check the weather patterns in February at Sullivans Island weather in February.

When comparing the weather in June to that in March, there are significant differences in temperature and precipitation patterns. June boasts much warmer temperatures, with a minimum of 18°C (64°F), an average of 26°C (79°F), and a maximum of 32°C (90°F). In contrast, March experiences cooler conditions, ranging from a minimum of 2°C (36°F) to an average of 15°C (60°F) and a maximum of 23°C (74°F).

In terms of precipitation, June is notably wetter, receiving 144 mm (5.7 inches) over 17 days, while March has a significantly lower total of 62 mm (2.4 inches) over just 7 days. Interestingly, both months share a similar humidity level, with March at 79% and June slightly lower at 78%. For more details on March weather, you can visit Sullivans Island weather in March.

The weather in June is notably warmer than in April, with June's minimum temperature reaching 18°C (64°F) compared to April's cooler 6°C (42°F). While April has an average temperature of 19°C (66°F), June is much warmer with an average of 26°C (79°F) and a maximum temperature hitting 32°C (90°F). Additionally, June experiences more precipitation, totaling 144 mm (5.7 in) over 17 days, while April sees 105 mm (4.1 in) over just 8 days. Humidity remains consistent between the two months, both hovering around 78%. For a more detailed look at the weather patterns, you can check out Sullivans Island weather in April.

When comparing the weather in June to May, June tends to be warmer with an average temperature of 26°C (79°F) compared to May's average of 23°C (74°F). Additionally, June experiences slightly higher maximum temperatures, reaching up to 32°C (90°F), though May also sees warm days with a maximum of 31°C (89°F). Precipitation is considerably higher in June, with 144 mm (5.7 in) over 17 days, while May has only 82 mm (3.2 in) across 8 days. Notably, both months share the same humidity level of 78%. For more details on May weather patterns, you can visit Sullivans Island weather in May.

In comparing the weather between June and July, July tends to be slightly warmer, with average temperatures reaching 27°C (81°F) compared to June's average of 26°C (79°F). Both months experience a maximum temperature of 32°C (90°F), but July starts with a higher minimum temperature of 22°C (72°F) compared to June's 18°C (64°F). Precipitation also increases in July, with 171 mm (6.7 in) of rain over 16 days, compared to June's 144 mm (5.7 in) over 17 days. Additionally, humidity levels rise slightly in July to 82%, up from June's 78%. For more detailed insights on July weather, you can visit Sullivans Island weather in July.

June and August display notable differences in weather patterns. June experiences average temperatures ranging from a minimum of 18°C (64°F) to a maximum of 32°C (90°F), with a total precipitation of 144 mm (5.7 in) over 17 days and humidity at 78%. In contrast, August tends to be slightly warmer, with minimum temperatures starting at 23°C (73°F) and a comfortable average of 27°C (81°F). The month also sees increased rainfall, totaling 197 mm (7.8 in) over 21 days, accompanied by a rise in humidity to 81%. These conditions indicate that while both months are warm, August is generally wetter and a bit more humid. For further details on August's weather, check out Sullivans Island weather in August.

In comparing the weather of June and September, both months exhibit similar average temperatures, hovering around 26°C (79°F), with maximums reaching up to 32°C (90°F). However, June experiences slightly higher minimum temperatures at 18°C (64°F) compared to September's 16°C (61°F). While June receives 144 mm (5.7 in) of precipitation over 17 days, September sees an increase in rainfall, totaling 188 mm (7.4 in) over 14 days. Humidity levels in September are marginally higher at 81%, compared to June's 78%. For more detailed insights, you can check out Sullivans Island weather in September.

June and October present notable contrasts in weather patterns. In June, temperatures are warm, with a minimum of 18°C (64°F) and an average of 26°C (79°F), peaking at 32°C (90°F). This month also experiences significant rainfall, averaging 144 mm (5.7 in) across 17 days, contributing to a high humidity level of 78%. In contrast, October offers cooler temperatures, with a minimum of 7°C (46°F) and an average of 23°C (73°F), reaching a maximum of 29°C (85°F). Rainfall decreases to 85 mm (3.4 in) over 10 days, while humidity remains steady at 78%. For more details on October weather, you can check Sullivans Island weather in October.

The weather in June is typically much warmer than in November, with average temperatures ranging from a minimum of 18°C (64°F) to a maximum of 32°C (90°F), while November sees cooler conditions, with temperatures ranging from 3°C (38°F) to a maximum of 26°C (79°F). June experiences more frequent rainfall, with precipitation recorded on 17 days totaling 144 mm (5.7 in), compared to November, which has only 8 days of rain and a lower total of 103 mm (4.1 in). Interestingly, despite the cooler temperatures in November, the humidity remains relatively high at 82%, slightly above June’s 78%, creating a contrasting but equally notable atmosphere. For more details on November weather, you can visit Sullivans Island weather in November.

June and December present stark contrasts in weather. In June, temperatures range from a minimum of 18°C (64°F) to a maximum of 32°C (90°F), with an average of 26°C (79°F). The month is quite humid at 78% and sees significant rainfall, totaling 144 mm (5.7 in) over 17 days. In contrast, December experiences much cooler temperatures, with a minimum of 0°C (33°F), an average of 13°C (56°F), and a maximum of 22°C (72°F). Although December comes with slightly less precipitation at 141 mm (5.6 in) over 10 days, it has a higher humidity level of 84%. For a closer look at the specifics, check out Sullivans Island weather in December.

Compare Sullivans Island's Climate with Cities Worldwide

Conclusion: What to Expect From June Weather in Sullivans Island

As June rolls onto Sullivans Island, the weather transforms into a delightful summer experience marked by warmer temperatures and increased humidity. While temperatures often peak at comfortably warm levels, the average warmth encourages outdoor activities, contrasting with the more moderate conditions of spring. However, June is also characterized by a noticeable uptick in rainfall, with showers gracing the island on nearly half the days, adding a refreshing twist to the sultry summer days. This combination of heat and humidity, alongside the frequent rain, sets June apart from other months, making it a unique time to enjoy the island's scenery and vibrant atmosphere. For a deeper look into what to expect throughout the year, check out Sullivans Island Climate.