Fenwick Island Weather: What to Expect Year-Round
Fenwick Island Weather: What to Expect Year-Round
Fenwick Island, a quiet gem on South Carolina’s coast, offers mild winters, warm summers, and a coastal climate that shapes life on the barrier island. Whether you’re planning a vacation or considering a move, understanding Fenwick Island’s weather is key to enjoying everything the region has to offer.
Current Climate Profile
Fenwick Island experiences a humid subtropical climate with distinct seasonal shifts. Average summer temperatures hover between 86°F and 91°F, while winter highs stay comfortably in the mid-60s°F. Humidity levels rise significantly in summer, often exceeding 70%, contributing to the island’s lush landscapes despite occasional heat.
Daily rainfall averages around 4–5 inches annually, concentrated mainly in late spring and early fall. Thunderstorms are common during summer afternoons, bringing brief but intense downpours that refresh the air and nourish coastal vegetation.
Seasonal Breakdown: Spring Through Fall
Spring (March–May): Gentle Warmth Meets Rain Spring on Fenwick Island brings a gradual warming trend, with daytime temperatures rising from 70°F to 82°F. Rainfall decreases slightly, averaging 3–4 inches monthly, fostering blooming wildflowers and greening dunes. Morning fog lingers over marshes, offering serene photography opportunities and cooler breezes ideal for early walks along the beach.
Summer (June–August): Peak Heat and Humidity Summer is the warmest and most humid season, with July and August regularly hitting 88°F to 93°F. Afternoon sea breezes provide relief, making beach outings and water activities enjoyable. Rainfall peaks in late summer, with brief but heavy showers that sustain the island’s salt marshes and barrier ecosystems. UV index levels are high, so sun protection remains essential year-round.
Fall (September–November): Cooling Down and Clear Skies As temperatures ease into the mid-70s°F by October, fall brings clearer skies and lower humidity. September still sees warm days (85°F–90°F) and occasional tropical influences, though hurricanes are rare. October and November offer mild, pleasant weather perfect for biking, kayaking, or savoring seasonal seafood.
Winter (December–February): Mild and Quiet Winters are short and mild, with daytime highs averaging 62°F to 68°F and night lows rarely dipping below 45°F. Snow is exceptionally rare; blankets of frost remain unheard of. Frosty mornings give way quickly to sunny afternoons, making winter ideal for quiet walks and wildlife spotting without summer crowds.
Coastal Climate and Weather Patterns in 2025
Fenwick Island’s barrier island geography shapes its microclimate. Proximity to the Atlantic Ocean moderates extreme temperatures, while dunes and maritime forests buffer inland areas from storm surges. Sea level rise and increased storm intensity—documented in NOAA’s 2024 coastal assessments—are prompting updated resilience planning, including elevated infrastructure and strengthened dune restoration.
Recent trends show slight shifts: summers are warming by approximately 0.5°F per decade, while rainfall variability increases seasonally. These changes highlight the importance of adaptive planning for both residents and visitors.
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