If you’re checking the what's the weather for brunswick georgia today, you’re probably met with a bit of a mixed bag. Right now, it’s Tuesday, January 13, 2026, and Brunswick is doing that thing where it tries to be two seasons at once.
The sun is out. It’s a crisp 61°F outside. Honestly, for mid-January, that’s not half bad. But don’t let the bright sky fool you into thinking you can head out in a t-shirt. With a light breeze coming off the water and humidity sitting around 50%, there's a definite bite in the air once you step into the shade.
Brunswick weather is famously temperamental because of its spot right on the edge of the marshes. One minute you’re basking in a "False Spring," and the next, a northwest wind kicks up and you're hunting for a parka.
The 7-Day Outlook: What’s Coming Next?
If you have plans this week, keep a close eye on the mercury. We are looking at a bit of a roller coaster.
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Tomorrow, Wednesday, January 14, things start to shift. The clouds are moving in, and we’re expecting a high of only 57°F. There’s about a 35% chance of some light rain overnight. It’s the kind of damp cold that gets into your bones, especially if you’re near the Mary Ross Waterfront Park.
Thursday is when the real "winter" hits.
The high drops to 48°F.
The low?
A freezing 31°F.
Basically, if you have sensitive plants out on the porch, you’ve got about 48 hours to get them inside or covered up. Friday stays sunny but cold, keeping that 31°F low before we see a massive swing over the weekend. Saturday is actually looking like the winner for outdoor activities, with a projected high of 65°F.
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Understanding the "Golden Isles" Microclimate
People often confuse Brunswick weather with Savannah or Jacksonville. We’re tucked right in the middle, but the Marshes of Glynn create a specific humidity trap. Even in January, the average relative humidity stays around 79%.
That humidity is a double-edged sword. In the summer, it’s the "oppressive" heat that travel brochures warn you about. In the winter, it makes 45°F feel significantly colder than 45°F in a dry climate like Atlanta.
Why the Wind Matters Here
You’ll notice the wind speed today is pretty calm—just 2 mph. But as we move into Thursday and Friday, those northwest winds are going to ramp up to 15 mph. On the Sidney Lanier Bridge, that wind is even stronger. If you're driving a high-profile vehicle or just walking the span for exercise, be ready for some serious resistance.
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Survival Tips for January in Brunswick
Living here or just visiting requires a specific strategy. You can't just look at the high temperature and call it a day.
- The Three-Layer Rule: Wear a base layer, a light sweater, and a windbreaker. You’ll likely shed the windbreaker by 2:00 PM and put it back on by 5:15 PM.
- Sunset is Deceptive: The sun sets around 5:45 PM right now. The moment it dips below the horizon, the temperature doesn't just "cool off"—it plummets.
- Don't Forget the Sunscreen: Even when it’s 50 degrees, the reflection off the marshes and the coastal water can give you a nasty burn if you’re out on a boat or at the Hofwyl-Broadfield Plantation all afternoon.
Is it a Good Time to Visit?
Actually, yeah. Kinda.
While everyone else is freezing in the north, Brunswick is mostly "moderately chilly." It’s the best time to see the migratory birds along the Colonial Coast Birding Trail without being eaten alive by gnats. The "no-see-ums" are mostly dormant right now, which is a rare blessing in Glynn County.
If you’re heading out this weekend when it hits 65°F, it's perfect weather for a bike ride through the Old Town National Historic District. Just keep that umbrella handy for the Saturday night rain.
To stay prepared for the upcoming freeze, make sure your outdoor pipes are insulated by Wednesday night. Check your tire pressure too; these 30-degree temperature swings usually trigger those annoying "low pressure" sensors on your dashboard.