When planning a visit to Block Island, understanding the local weather is key to making the most of your trip, no matter the season. Thanks to its location 13 miles off the coast of mainland Rhode Island, Block Island experiences its own distinct climate. The ocean’s influence means temperatures are often milder and breezier than on the mainland, and weather patterns can change quickly. 

Read on for our guide to this destination’s weather, and discover what to expect throughout the year, so you can plan activities and pack appropriately for your visit.

A Year-Round Look at Block Island Weather

Due to its offshore location, the region enjoys a climate moderated by the surrounding Atlantic Ocean. Summers are comfortably warm without extreme heat, while winters are cool but less severe than those in mainland Rhode Island. Visitors can expect a mix of sun, sea breezes, and occasional fog or storms, depending on the season. Here’s a closer look at the island’s weather throughout the year.

Spring (March–May)

Spring brings brisk but warming temperatures, ranging from the low 40s to mid-60s°F. The island starts to bloom with greenery and wildflowers, and breezy conditions are common. Nature lovers can enjoy birdwatching as the area’s bird species begin to nest after the winter. It’s also a great time to explore the scenic hiking trails before the summer crowds arrive. Bring a light jacket, as it can be chilly in the mornings and evenings.  

Summer (June–August)

Summer is prime beach season, with temperatures in the mid-70s to low 80s°F. The ocean breezes keep the weather comfortable so you can spend the day on the sand. Soak up the sun at popular Block Island beaches, go for a swim, or explore tide pools. Visitors can enjoy watersports like kayaking and paddleboarding. This season is also a lively time on the island, with lots of local events and festivals. 

Fall (September–November)

Fall ushers in cooler temperatures, ranging from the upper 50s to the low 70s°F, along with fewer crowds than summer. The season is ideal for hikes along the coast or exploring wooded trails while enjoying the changing autumn foliage. Calmer waters make it an excellent time for kayaking or fishing. This is also a perfect opportunity to savor meals at local restaurants and join in on harvest celebrations that showcase the island’s community spirit.

Winter (December–February)

Winter is quieter, with temperatures dipping into the 30s and 40s°F. Though it is a calmer time of year, the season has its charm for visitors seeking solitude. While tourism slows, cozy indoor activities like visiting boutique shops, browsing galleries, or enjoying festive seasonal events keep the island inviting. Pack lots of warm layers, and be sure to check ferry and flight schedules, as winter weather can occasionally disrupt travel. 

Planning & Travel Tips for Every Forecast

Whether visiting in summer or winter, planning accordingly for the weather in Block Island can enhance your trip. Always check the forecast before departing by ferry or plane, as schedules can change quickly due to shifting conditions. It’s also smart to pack a few extra essentials like sunscreen, a windbreaker or light jacket, and waterproof shoes, as these can make all the difference if the weather turns. 

Shape your itinerary around the forecast: spend warm days on the beach or out on the water, linger in a café or capture misty coastal photos when the fog rolls in, and take quiet shoreline walks during the calm of winter. By understanding Block Island’s unique weather, visitors can make the most of each season.

Start planning your trip today, and see how every season reveals a different side of this coastal escape; from spring’s blooming landscapes and gentle breezes to summer’s open-water adventures, fall’s golden calm, and the quiet beauty of winter by the sea.