Best Time to Go
Great Lakes & Inland
The Great Lakes and inland reservoirs have a classic summer season. Water stays cold well into spring; July and August are the warm, settled heart of the year.
- Month-by-month conditions
- Free
- No signup
Month by month
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When to go & why
- June–September: the reliable warm-water season
- Spring water is dangerously cold, so wear a life jacket
- Big lakes build steep waves fast, so watch the wind
Notable months
- April
- Water still cold, so dress for immersion
- July
- Warm water, long days, settled weather
Plan your Great Lakes & Inland trip with a local operator
Browse marinas & charters who know the seasons and can book your dates.
Common questions
- When is boating season on the Great Lakes?
- June through September is the reliable warm-water season, with July and August being the warm, settled heart of the year. The water stays cold well into spring, so the dependable window is summer.
- Is the water warm enough to boat in spring on the Great Lakes?
- Not really. The water stays cold well into spring and is dangerously cold even when the air warms up. If you go early, dress for immersion and always wear a life jacket.
- Are the Great Lakes rough for boating?
- They can be. The big lakes build steep waves fast when the wind picks up. Watch the wind and the marine forecast before heading out, even in the calmer summer months.
