Estimate marine weather risk, boating comfort, sea state, small craft concern, and trip safety from wind speed, gusts, wave height, swell period, visibility, tide, current, storm risk, boat size, and trip distance. This calculator is useful for boating, fishing, kayaking, coastal camping, lake crossings, and marine trip planning.
Wind and waves:
The calculator scores sustained wind, gusts, wave height, swell height, and swell period to estimate how rough the water may feel.
Boat suitability:
Boat length, boat type, water type, operator experience, and trip distance are used to estimate whether the conditions fit the trip.
Safety factors:
Visibility, current, wind-against-tide, and storm risk can quickly raise the final marine weather risk score.
A marine weather calculator helps compare boating conditions before fishing, crossing a lake, running offshore, launching a kayak, anchoring, or planning a coastal route.
This calculator is a planning estimate only. Always check official marine forecasts, radar, local advisories, small craft advisories, tide/current data, and real-time conditions.
This calculator uses a practical marine trip risk score:
Risk Score = wind points + wave points + visibility points + current points + storm points + boat suitability points
A marine weather calculator estimates boating risk from wind, waves, swell, visibility, current, storms, and boat size. It is a planning aid, not an official forecast.
It depends on boat size, water type, wave height, operator skill, and distance from shelter. Small boats can become uncomfortable or unsafe at much lower wind speeds than larger boats.
Wind against tide or current can create shorter, steeper waves, making the ride rougher and more hazardous than wind and current moving together.
No. Use official marine forecasts, radar, tide/current data, local advisories, and real-time observations for actual go/no-go decisions.