Color-coded marine weather that anyone can understand. No more guessing what 15 knots NNE means for your boat.
60-minute free trial
You shouldn't need to check 5 different apps before heading out.
Juggling weather, tides, radar, and charts across multiple apps
Wind speeds that don't account for how YOUR boat handles conditions
Numbers without context â you're left guessing what '15 knots' means for your boat
ChopWatch was built by a boater who got tired of guessing.
Other apps show raw numbers. ChopWatch translates conditions into colors and context.
Based on:
Ranges:
* This is a hypothetical example. ChopWatch's severity analysis considers multiple factors including wind speed, wave height, period, direction, boat profile, and more.
Calm, Moderate, Rough, Severe
Context, not just numbers
Data for your hull type
Understand in seconds
Charts, tides, radar, forecasts, and inlet conditions â all in one app.
Stop squinting at raw numbers. ChopWatch translates marine forecasts into color-coded indicators with plain-English descriptions. See conditions at a glance â calm, moderate, rough, or severe.
A 21' bay boat handles chop differently than a 40' sportfisher. Set your boat profile to see conditions contextualized for your hull type and size.
View conditions at coastal inlets across the US. See tide flow direction, wind data, and how wind and tide may be interacting â information that's often hard to find in one place.
View marine conditions up to 120 hours in advance. Color-coded indicators help you quickly assess conditions at a glance.
Know exactly when high and low tides hit. Visual graphs show tide flow to help you plan your timing.
NOAA radar with storm tracking, nautical charts with depth soundings, lightning detection, and satellite imagery â all without switching apps.
Download, set up your boat, and go.
Tell us your home marina or favorite launch spot
Hull type and size to see contextualized data
View color-coded conditions and make informed decisions for your trip.
ChopWatch aggregates marine weather data from 11+ trusted global sources including NOAA, ECMWF, MÊtÊo-France, and AI-powered forecasting models. When you see a range (like 1.9-3 ft waves), we're showing you the consensus from multiple independent sources â giving you a fuller picture of what to expect on the water.
By comparing predictions across sources, you can see variability and make more informed decisions.
Charts & Radar:
Full access to every feature. Less than a cup of coffee per week to stay informed.
ChopWatch works anywhere with marine weather data. Our inlet database covers 340+ coastal inlets across the US.
Absolutely. ChopWatch was built specifically so you don't need to decode weather data. Color-coded indicators and plain-English descriptions make it impossible to misread conditions. If you can read a traffic light, you can read ChopWatch.
Generic weather apps show raw data. ChopWatch contextualizes marine conditions based on your boat's profile, showing speed and trim reference ranges alongside forecasts.
Full access to every feature for 60 minutes. Enough time to explore, check conditions at your marina, and see if ChopWatch is right for you.
Join boaters who use ChopWatch to stay informed.