Honestly, most people think a trip to the Florida coast is just endless sunshine and 80-degree days. If you're looking at the Riviera Beach weather forecast right now, you’ll see it’s a bit more nuanced than that. Today, Saturday, January 17, 2026, we’re looking at a high of 75°F. Not bad, right? But the morning actually kicked off at a crisp 62°F.
You’ve gotta dress in layers here.
The humidity is currently sitting at a heavy 89%, though it's expected to drop to about 69% as the day progresses. It’s partly sunny for the most part, but there is a 20% chance of rain both during the day and into the night. If you’re heading out to the Marina or over to Peanut Island, keep an eye on that southeast wind blowing in at 10 mph.
The January Reality Check
People hear "Florida" and pack nothing but flip-flops. Big mistake. Tonight, the temperature is going to dip down to 61°F with cloudy skies. That’s enough of a chill to make you wish you’d packed a light jacket for dinner on the water.
The Riviera Beach weather forecast for tomorrow, Sunday, January 18, shows a high of 77°F, but the low is predicted to plummet to 50°F.
📖 Related: Logan River Golf Course: Why Locals Keep This Spot Under Wraps
Fifty degrees!
That’s a 27-degree swing in a single day. The wind is also shifting to the west and picking up significantly, hitting 20 mph. If you’re planning on being out on a boat, Sunday is going to be a lot choppier and colder than you might expect for the "Sunshine State."
Looking Ahead at the Week
By Monday, the high only reaches 66°F. It’s going to be a beautiful, partly sunny day, but the low of 49°F means you’ll definitely be feeling that winter bite in the early morning hours.
Here’s a quick glance at the mid-week trend:
- Tuesday: High of 72°F, Low of 60°F. Mostly cloudy.
- Wednesday: High of 76°F, Low of 68°F. This is when the light rain starts moving in.
- Thursday: This is the day to stay inside. We're looking at heavy rain with a 90% chance of precipitation and a high of 76°F.
Understanding the Riviera Beach Microclimate
Riviera Beach has this weird habit of being different from even just a few miles inland. Since it’s right on the Atlantic, the Gulf Stream plays a massive role in keeping things a bit more stable than, say, the center of the state. But when those winter cold fronts push down through the peninsula, the wind off the water can make 60°F feel like 50°F real quick.
The UV index today is only a 3. In the summer, that number routinely hits 10 or 11, which basically means you’ll turn into a lobster in fifteen minutes. Even with a 3, if you're out on the sand all day, that reflection off the water will still get you. Don't skip the SPF just because it's January.
Actionable Tips for Your Visit
If you're looking at the Riviera Beach weather forecast to plan your weekend, here is the move:
- Plan for Thursday's Washout: With a 90% rain chance, Thursday is the perfect day to hit up the Manatee Lagoon or do some indoor shopping. Don't plan a beach day.
- Boaters, Watch Sunday: That 20 mph west wind is no joke. It can make the inlet tricky and the ocean side uncomfortable for smaller vessels.
- Pack a Windbreaker: With northwest and north winds dominating the early part of next week (Monday and Tuesday), a light, wind-resistant shell is basically mandatory for any outdoor activities.
- Take Advantage of Monday/Tuesday: The rain chances drop to a measly 5-10%. It’ll be cooler, but the air will be crisp and the skies will be clear, making it the best time for photography or hiking around the local parks.
The "comfort" of Riviera Beach is real, but it’s a temperamental kind of comfort. One day you're in a swimsuit, the next you're hunting for a hoodie. Just keep an eye on those overnight lows—they’re the real story this week.