When’s the Best Time to Launch Your Boat?

Getting your boat back in the water isn’t just about warmer weather; it’s about timing, preparation, and knowing your river. At Thames Ditton Boatyard, we’ve helped hundreds of boaters get launch-ready every season, and we know that launching at the right time can mean the difference between smooth sailing and a season of setbacks.

Here’s our calendar-based guide to choosing the best time to launch your boat, with tips based on weather trends, Thames river conditions, and annual maintenance cycles.

January - February: The Deep Freeze

Let’s keep it simple: this is not the time to launch. Temperatures are low, water levels are unpredictable, and ice or debris in the river can cause damage. Instead, use these months to inspect your hull, check for any winter storage issues, and book your spring servicing early. Slots fill up fast.

Tip: If you haven’t already winterised your boat properly, now’s the time to check for frost damage and schedule a full systems check.

March - April: Pre-Season Prep

As the days get longer, many boaters start thinking about launching. But don’t rush it. March can still bring cold snaps and fluctuating river conditions. April is a better bet, especially in the latter half. River levels on the Thames tend to stabilise, and the worst of the weather is usually behind us.

Maintenance Check: This is prime time for antifouling, engine servicing, and safety checks. Make sure your electrics, bilge pumps, and navigation lights are all in working order before you hit the water.

May - June: Peak Launch Window

This is the sweet spot. By May, the river is more predictable, the weather is consistently warmer, and marina services are fully operational. If you want a full season on the water, launching in late April to early May is ideal.

What to Watch: Ensure your boat is fully de-winterised. Check batteries, test run your engine, and stock up on safety gear. If you’re mooring on the Thames, confirm availability early. Popular spots go quickly.

July - August: High Season Caution

While summer feels like the obvious time to be on the water, it’s not always the best time to launch for the first time. Marinas are busier, river traffic increases, and mechanical support can be harder to book on short notice. That said, if you missed the spring window, this is still a viable time, just be prepared.

Expert Insight: Heat can affect fuel systems and cooling efficiency. Monitor engine temps and ensure proper ventilation, especially during extended use.

September - October: Autumn Opportunities

Surprisingly, autumn is one of the most underrated times to be on the Thames. The water is calm, the scenery is incredible, and the crowds thin out. If you launch in early September, you can enjoy several weeks of excellent cruising.

Good To Know: Watch the weather and river bulletins closely. Autumn storms and rising water levels can sneak up fast. And if you plan to haul out before winter, now’s the time to book it.

November - December: Wrap-Up Season

By November, it’s time to think about pulling your boat out. River flow increases, daylight hours drop, and maintenance facilities start transitioning to winter schedules. If your boat’s staying in the water over winter, make sure it’s properly protected.

Final Tasks: Flush the engine, check antifreeze levels, clean the hull, and consider a full fuel treatment to prevent gumming. Winter covers are a must.

Pro Tips from Thames Ditton Boatyard

Plan your launch around your boat, not just the calendar. A well-serviced cruiser might be water-ready in April, while a classic wooden boat might need a bit more care and warmer conditions. Get a professional inspection before committing to a launch date.

The best launch time depends on preparation, weather, and river knowledge. At Thames Ditton Boatyard, we offer full-service support year-round to help you get it right. Whether you need maintenance, mooring, or just a second opinion, we’re here to make sure your season starts right and stays smooth.

Ready to plan your launch? Contact our team today and let’s get your boat back where it belongs: on the water.