Located in the Northeast Region of the United States, New Jersey experiences all four seasons and maintains relatively high humidity year-round, thanks to its many rivers, lakes, and proximity to both the Atlantic Ocean and the Delaware River.
Zooming in on the coast, Long Beach Island (LBI), NJ, showcases the best of seasonal living. With approximately 205 sunny days per year, LBI is a beloved destination for sunseekers and vacationers alike. From summer beach days to cozy winter escapes, the island offers something unique in every season.
Whether you’re planning a vacation or considering relocating, this guide will help you navigate LBI’s year-round weather and make the most of your time on the island.
What to Expect from Long Beach Island Weather
If you’re someone who loves experiencing all four seasons, you’ll appreciate the weather on Long Beach Island, New Jersey!
Here’s a quick look at the average monthly temperatures, rainfall, and daylight hours you can expect throughout the year.
Averages for Ship Bottom, NJ
| Month | Avg High (°F) | Avg Low (°F) | Avg Water Temp (°F) | Precipitation (in) | Daylight Hours |
|---|---|---|---|---|---|
| January | 44 | 25 | 39 | 2.17 | ~9.7 |
| February | 47 | 27 | 37 | 2.00 | ~10.8 |
| March | 56 | 33 | 40 | 2.32 | ~12.0 |
| April | 67 | 42 | 47 | 1.55 | ~13.4 |
| May | 77 | 53 | 56 | 1.70 | ~14.5 |
| June | 84 | 63 | 66 | 2.22 | ~15.0 |
| July | 89 | 68 | 72 | 3.74 | ~14.8 |
| August | 86 | 65 | 74 | 3.21 | ~13.8 |
| September | 80 | 59 | 71 | 1.67 | ~12.4 |
| October | 70 | 48 | 64 | 3.02 | ~11.1 |
| November | 57 | 34 | 55 | 2.05 | ~10.1 |
| December | 50 | 30 | 45 | 2.72 | ~9.4 |
🌸Spring (March to May)
Weather Summary
Spring on LBI is a true transition season—expect a little bit of everything. It’s not unusual to experience a cool, rainy day followed by sunshine and warmth the next. Ocean temperatures start in the 40s during March and gradually rise into the 50s by April and May.
Showers are common throughout the season, and breezy days often accompany the shift from cooler to warmer air. Average high temperatures range from the 40s in March to the 50s in April, climbing well into the 60s by May.
By April, signs of the season are everywhere—flowering trees, daffodils, and other spring blooms begin to brighten the island as the weather warms.
What to Pack
Spring in LBI can be unpredictable, so it’s best to check the weather forecast as your trip approaches. To stay comfortable no matter the conditions, be sure to pack layers—including a warm jacket, hat, raincoat, and umbrella. From chilly mornings to sunny afternoons and the occasional spring shower, having the right gear will help you enjoy everything the island has to offer.
☀️Summer (June to August)
Weather Summary
Summers on LBI are warm, sunny, and often humid—perfect for beach days. July is typically the hottest month, with average highs around 82°F, followed closely by August at around 80°F. While temperatures occasionally reach the 90s, refreshing afternoon sea breezes help keep things comfortable, usually in the 70s and 80s.
Skies are often clear and bright, though scattered afternoon thunderstorms can pop up from time to time. The sun is strong during this season, with UV Index levels frequently hitting 8 or 9—so sunscreen is a must.
Ocean temperatures peak in August and September, making for ideal swimming conditions, usually ranging between 70–75°F.
What to Pack
For a summer trip to LBI, pack light and comfortable clothing like shorts, T-shirts, and breathable fabrics—perfect for beach days, outdoor strolls, and exploring the island.
While most restaurants, shops, and attractions are air-conditioned, it’s a good idea to bring a light sweater for indoor comfort. And don’t forget a beach umbrella or compact rain umbrella—occasional summer showers and strong sun are both part of the experience!
🍂Fall (September to November)
Weather Summary
Fall is often considered one of the most beautiful—and underrated—times of year on LBI. September brings lingering warmth with average highs in the 70s, gradually cooling into the 60s by October. Overnight lows dip into the 40s and 50s, especially later in the season.
While the occasional shower or thunderstorm rolls through, fall is typically one of the driest times of year, with November often being the driest month overall. Autumn also brings crisp air, golden light, and vibrant fall foliage—peaking in early to mid-October in and around the island.
What to Pack
Packing layers is key for fall on LBI. Bring lightweight tops, sweaters, and a jacket so you can easily adjust to the changing temps throughout the day. A scarf and leggings will add warmth and versatility, while socks and comfortable sneakers will keep your feet cozy for walks, sightseeing, or beach strolls.
❄️Winter (December to February)
Weather Summary
Winter on LBI tends to be cool, damp, and cloudy, with frequent stretches of overcast skies, fog, and precipitation. January is typically the coldest month, with average high temperatures in the low 40s.
While major snowstorms are rare, the island averages around 12–15 inches of snow annually. Occasionally, powerful nor’easters sweep through, bringing wind-driven rain, coastal flooding, and snowfall depending on the storm’s track and temperature.
What to Pack
Winter weather on LBI calls for full cold-weather gear. Be sure to bring a heavy coat, ideally layered over a warm sweater. You’ll also want a hat, scarf, and gloves to stay cozy on chilly, damp days. Low boots or insulated shoes are recommended for warmth and comfort—especially during snowy or wet conditions.
About the Author
Meteorologist Matt Powell is an AMS-Sealed broadcast meteorologist and a professor of meteorology at Kean University in New Jersey. He has over two decades of experience in both broadcast meteorology and teaching. His broadcasting career includes positions at FIOS 1 News in New York City, ABC 47 in Salisbury, Maryland, and NBC40 in Atlantic City, New Jersey.
In addition to his teaching role, Powell serves as the Chief Meteorologist at the Delaware Weather Network.
For more information or to follow his updates, you can visit his Facebook page or his X (formerly Twitter) profile.