Seaside is the original Oregon Coast vacation town, a breezy, family-friendly community about 90 minutes west of Portland where the Promenade meets the Pacific. The town's identity is built around its wide, flat beach, the iconic Turnaround where Broadway Street ends at the ocean, and a walkable downtown strip lined with saltwater taffy shops, arcades, seafood restaurants, and a historic theatre that's been reborn as a brewery and cinema. This is also where Lewis and Clark's Corps of Discovery reached the Pacific and set up salt works to preserve food for the return journey, and that sense of being at the edge of something vast still defines Seaside today.
Your best window for Seaside runs from mid-June through late September, when the Oregon Coast shakes off its persistent clouds and delivers the driest, warmest stretch of the year. July and August are the headliners: rain is almost nonexistent, the beach volleyball tournament packs the sand in August, and the Hood to Coast Relay brings tens of thousands of runners to the finish line in late August. If you prefer thinner crowds with nearly as good weather, aim for September, when visitor numbers ease and early fall warmth lingers along the coast. Late spring (May) works as a budget-friendly shoulder season, though you'll need to tolerate more frequent showers and cooler temperatures.
Spring in Seaside, OR, US
Seaside starts to wake up in March, though the coast is still firmly in its cool, damp phase. Mornings sit near 40.9°F (4.9°C), and even afternoon highs only reach about 57.8°F (14.3°C), so layering is essential if you plan to walk the Promenade or explore the Tillamook Head trail above town. Showers roll through on one to two days most weeks, and March tends to be one of the windier months, so bring a waterproof shell that can handle gusts. The Oregon Ghost Conference draws paranormal enthusiasts to the Seaside Convention Center each March, adding some offbeat energy to what's otherwise a quiet stretch.
April and May bring gradual improvement. The monthly First Saturday Art Walk in the Historic Gilbert District gives you a reason to stroll between galleries in the early evening, and a spring wine walk through downtown Seaside pairs local Oregon wines with appetizers at participating shops. Accommodation prices dip during this fairly slow tourism period, making spring a smart time to book a beachfront room at a fraction of peak-season rates. By May, daylight stretches past 8:30 PM, opening up long evening beach walks even if the air still has a chill. Razor clam digging gets going in spring too; just pick up a shellfish license before you hit the sand.
Summer in Seaside, OR, US
Summer is when Seaside fully comes alive. The beach fills with families, the arcades on Broadway Street buzz late into the evening, and the sky over the Pacific finally cooperates. Rain drops to its lowest point of the year: July sees significant precipitation on roughly 6% of days, and August is nearly as dry at 9%. Highs average 68.2°F (20.1°C) with lows around 52°F (11.1°C), comfortable enough for full days on the sand without the sweltering heat you'd find further south. Long summer evenings help, with the sun not setting until after 9 PM in June and July.
The events calendar peaks alongside the weather. Independence Day draws one of the West Coast's largest fireworks shows right over the beach, and you'll want to book accommodation months in advance for that weekend. In August, the Seaside Beach Volleyball Tournament takes over the shoreline as the largest amateur beach volleyball competition in the country, with hundreds of teams competing on the sand. Late August also brings the Hood to Coast Relay finish line to Seaside, when over 12,000 runners complete a nearly 200-mile journey from Mount Hood to the coast. The energy on the beach during that finish-line party is electric. A summer kite festival fills the sky with color, and the Wheels and Waves Car Show sends classic hot rods cruising down Broadway. This is the busiest and priciest season, so plan ahead.
Between events, the everyday pleasures carry summer. Feed the harbor seals at the Seaside Aquarium, rent bikes and cruise the 1.5-mile Promenade, or drive 15 minutes south to Ecola State Park for coastal hiking with views of Cannon Beach and Haystack Rock. Pack sunscreen and a light fleece; even in summer, the ocean breeze can make evenings feel cooler than the thermometer suggests.
Fall in Seaside, OR, US
September holds onto summer's warmth better than you might expect on the Oregon Coast. Early to mid-September brings the year's peak temperatures, with highs reaching 72.5°F (22.5°C) and overnight lows near 51.3°F (10.7°C). Seasonal averages for fall as a whole settle around 62.7°F (17.1°C) for highs and 44.8°F (7.1°C) for lows, still pleasant for hiking the Tillamook Head trail or strolling the Promenade. Precipitation picks up noticeably as the season progresses, with rain on two to six days per week by November, so September is the sweet spot before the damp sets in.
Crowds thin out after Labor Day, but Seaside doesn't empty. October draws surprisingly strong visitor numbers, and the fall wine walk through downtown pairs tastings from Oregon wineries with the cozy atmosphere of the shops along Broadway. The monthly First Saturday Art Walk continues through fall, and the shorter days, with sunset arriving around 6:30 PM by October, cast a golden coastal light that photographers love. Accommodation prices sit slightly above average but well below the summer peak, making early fall one of the best value windows for a visit.
By November, you're firmly in storm-watching territory. The coastline takes on a moody, dramatic character as waves intensify and clouds roll low over the headlands. Bring a solid rain jacket and waterproof boots if you're visiting late in the season, and lean into indoor options like the Times Theatre and Public House, where you can catch a movie with a craft beer in hand.
Winter in Seaside, OR, US
Winter on the Oregon Coast is raw and atmospheric. Highs settle around 50.7°F (10.4°C) and lows dip to 36.3°F (2.4°C), with heavy cloud cover and rain on two to six days most weeks. December is one of the wettest stretches, and daylight shrinks to under nine hours, so plan your outdoor time carefully. Snow doesn't reach Seaside at sea level, but the cold, damp air cuts through light layers. Dress in wool and waterproof outerwear if you plan to walk the Promenade or explore the beach.
The town counters the gray skies with Yuletide celebrations throughout December, including artisan fairs, community tree lightings, parades, and window-decorating contests along Broadway. These holiday events give Seaside a warm, small-town feel that's entirely different from the beach-party energy of summer. Tourism hits its lowest point in January and February, which means you can often find the best deals on accommodation and have the beach practically to yourself. Storm watching becomes its own draw: massive Pacific swells crash against Tillamook Head and the sea stacks visible from the shoreline, and watching the power of the ocean from a safe vantage point is genuinely thrilling.
Rainy-day activities keep you occupied when the weather pushes you indoors. The Seaside Aquarium, the Carousel Mall, and Funland arcade are reliable family options, and the Seaside Museum offers a deeper look at the town's logging and maritime history. A 15-minute drive north to Astoria opens up additional museums, restaurants, and the iconic Astoria Column.
At a Glance
Monthly weather, visitor crowds, air quality, holidays, and daylight hours to help you plan your trip.
Travel Tips & Safety for Seaside, OR, US
Seaside is about 90 minutes from Portland via Highway 26, and a car is the most practical way to get here and explore the surrounding coast. Cannon Beach is just 15 minutes south, and Astoria sits 30 minutes north, so you can easily day-trip to both. Parking in downtown Seaside can fill up fast on summer weekends and during major events like Hood to Coast; arrive early or park a few blocks off Broadway and walk in.
The ocean here is cold year-round and currents can be strong, especially near headlands and jetties. If you're wading or surfing, know that sneaker waves, sudden surges of water that rush up the beach without warning, are a real hazard on the Oregon Coast. Keep a safe distance from the waterline on rocky outcrops and never turn your back on the ocean. The beach and downtown are safe to walk at all hours, and Seaside is a generally low-crime community.