Honestly, if you’re looking at a treasure island weather forecast 10 day report right now, you might be seeing a bit of a mixed bag. It’s January 18, 2026, and the Gulf Coast is doing that thing where it can't quite decide if it wants to be a tropical paradise or a light jacket kind of place.
Right now, Treasure Island is sitting at a cool 57°F, but with the wind kicking up from the northwest at 26 mph, that "feels like" temperature is actually hovering around 53°F. We’ve got light rain falling today with a 53% chance of precipitation, so it’s definitely not a "tan on the sand" afternoon.
The 10-Day Reality Check
People often think Florida in January is just endless heat. Not true. You’ve got to look at the swings. For example, today's high is 67°F, but tonight it's going to drop all the way down to 42°F. That’s a 25-degree shift. If you’re out at the 28th Annual Treasure Island Sport Kite Competition & Festival (which wraps up today, Jan 18), you’re probably feeling that northwest wind. It’s great for the kites, but maybe less great for your toes if you're in flip-flops.
The Immediate Outlook
- Sunday (Today): High of 67°F, low of 42°F. Expect rain throughout the day (75% chance) but it clears up nicely at night.
- Monday, Jan 19: Total 180-degree turn. It’ll be sunny but significantly cooler with a high of only 55°F and a crisp low of 42°F. The wind dies down to 13 mph from the north.
- Tuesday, Jan 20: Still sunny. We start creeping back up to 60°F.
- Wednesday, Jan 21: Clouds move back in. It gets "warmer" at 66°F, but keep an eye on the night—there's a 35% chance of rain after dark.
Basically, the next few days are a roller coaster. You go from rain today to a bright, chilly Monday, then a slow warm-up.
👉 See also: Road Conditions I40 Tennessee: What You Need to Know Before Hitting the Asphalt
Why the "Feels Like" Temperature Matters Here
In Treasure Island, the humidity and the wind from the Gulf of Mexico change everything. On Wednesday the 21st, even though it’s 66°F, the humidity is predicted to be around 67%. That makes the air feel "thicker" than the dry 55°F day coming on Monday.
Then we hit Thursday, Jan 22. This looks like the wettest day of the upcoming week. We’re looking at a 70% chance of rain both day and night with a high of 64°F. If you had outdoor plans at John's Pass, you might want to move them to Friday the 23rd or Saturday the 24th, where we see the sun again and highs hitting 68°F and 67°F respectively.
Planning Around the Tides
If you're heading out to the beach for a walk or some fishing, the tides are just as important as the clouds. For Monday, Jan 19, we’re looking at a low tide of -0.7ft at 7:00 AM and a high of 2.1ft just before midnight at 11:33 PM.
✨ Don't miss: Finding Alta West Virginia: Why This Greenbrier County Spot Keeps People Coming Back
Low tide is the best time to find shells, especially after a storm or a windy day like today. With those 26 mph winds we’re seeing right now, tomorrow morning’s low tide might actually yield some decent treasures.
What to Actually Pack
Florida winters are temperamental. You've heard it before, but you really do need layers.
- A windbreaker or light shell: Necessary for the 28 mph gusts we're seeing today and the breezy days following.
- Hoodies over heavy coats: You won't need a parka, but a thick hoodie is perfect for those 42°F nights.
- Closed-toe shoes: Save the sandals for the end of the week when it nears 70°F again.
- Sunscreen: Even on the 55°F days (like tomorrow), the UV index is still sitting at a 4. You'll burn without realizing it because the air feels cold.
Looking Toward Next Week
As we move toward the end of this 10-day stretch, things stay fairly stable. Sunday, Jan 25, looks beautiful—sunny with a high of 67°F. By Tuesday, Jan 27, we might see another dip to 61°F with a light rain chance, but it's nothing compared to the soak we're getting today.
🔗 Read more: The Gwen Luxury Hotel Chicago: What Most People Get Wrong About This Art Deco Icon
The treasure island weather forecast 10 day cycle is currently dominated by these northern systems pushing through. It keeps the air fresh and the sky clear once the rain passes.
Actionable Travel Tips
- Monitor the North Wind: If the wind is coming from the North or Northwest (like it is today at 26 mph), the water will be choppy and the "feels like" temp will stay low.
- Check the humidity: On Wednesday (Jan 21) and Thursday (Jan 22), humidity jumps into the 80-90% range. This is when the "Florida damp" sets in—bring a rain jacket that breathes.
- Shelling Window: Aim for Monday morning at 7:00 AM. The combination of today's high winds and tomorrow's low tide is the perfect recipe for finding sea glass and shells.
Keep an eye on the daily updates, especially for Thursday the 22nd, as that 70% rain chance might shift. For now, plan for a chilly, sunny start to the week and a wetter, warmer middle.