Kumo

Your AI assistant

navigator

Race smarter with weather.

Kumo Marine turns complex marine forecasts into clear race guidance. Brainstorm your strategy with Kumo Marine

Your AI assistant

navigator

Race smarter with weather.

Kumo Marine turns complex marine forecasts into clear race guidance. Brainstorm your strategy with Kumo Marine

"Having forecast data is one thing. Turning it into race strategy is another. Kumo Marine helps bridge that gap."

Active ocean racer

Newport to Ensenada Race participant

Try Kumo Marine

See Pricing

Not just another

weather app.

Weather apps give you forecasts. Kumo Marine helps you turn them into race strategy. It is an AI assistant navigator you can interact with.

Weather apps give you forecasts. Kumo Marine helps you
turn them into race strategy. It is an AI assistant navigator you can interact with.

Weather apps give you forecasts. Kumo Marine helps you turn them into race strategy. It is an AI assistant navigator you can interact with.

Clear race strategy from

complex forecasts

Ask Kumo Marine about:

Weather routing strategy

Weather model agreement/disagreement

Major wind shifts

Big weather picture

Sea state along route

Upload your race information

in any format

Race documents

GPX files

Coordinates

Notes

Example prompts :

What does the weather look like for the start?

Where is the strongest breeze likely to be?

Is there a risk of light air on this course?

track how conditions changed

When is the next shift most likely?

Which model looks more reliable right now?

Where does forecast confidence look weak?

What does ECMWF vs GFS show for the first leg?

What does the weather look like for the start?

Where is the strongest breeze likely to be?

Is there a risk of light air on this course?

track how conditions changed

When is the next shift most likely?

Which model looks more reliable right now?

Where does forecast confidence look weak?

What does ECMWF vs GFS show for the first leg?

Why Sailors Choose

Kumo

Marine

Why Sailors Choose

Kumo

Marine

Race strategy, not just forecasts

Turn marine weather into practical decisions for your race.

See the big picture quickly

Understand the race weather setup without reading charts for hours.

Spot key shifts and pressure

Find breeze corridors, light-air zones, and timing of major shifts.

Know when to trust the forecast

See where the models agree and where forecast confidence is weaker.

Brainstorm smarter routing

Compare route ideas and think through weather-driven tradeoffs.

Keep refining your plan

Ask follow-up questions as conditions change and new decisions come up.

Built for

sailors, clubs,

and race organizers

Yacht racers

Understand race weather faster and more clearly.

Yacht racers

Understand race weather faster and more clearly.

Skippers and tacticians

Get a better read on wind patterns and forecast confidence.

Skippers and tacticians

Get a better read on wind patterns and forecast confidence.

Coaches and sailing programs

Help sailors learn how to think through race weather.

Coaches and sailing programs

Help sailors learn how to think through race weather.

Yacht clubs and race organizers

Offer a smarter weather analysis tool before an event.

Yacht clubs and race organizers

Offer a smarter weather analysis tool before an event.

Yacht clubs and race organizers

Offer a smarter weather analysis tool before an event.

The Future of Marine Navigation

Kumo Marine turns complex marine forecasts into navigation through one simple conversation.

Get started with Kumo
Marine in minutes.

Get started with Kumo Marine in minutes.

Make your Choice

Free Plan

Free

Includes:

Up to 3 queries

Try Kumo Marine on a real race question

Upload your race files and test the workflow

Try Free

Unlimited Plan

$4.99

per month

Everything in the Free plan, plus:

Unlimited queries

Leg by leg race weather analysis timed to your course

Comparison across ECMWF, GFS, NAM, and HRRR

No more checking multiple weather models before the start

Confidence flags to help you know what to trust

CSV upload to compare observed weather against past forecasts

Email support within 48 hours

Cancel anytime

Try Kumo Marine

Your AI assistant

navigator

Race smarter with weather.

Kumo Marine turns complex marine forecasts into clear race guidance. Brainstorm your strategy with Kumo Marine