Your captain's weather briefing, on WhatsApp.

Every morning at your chosen time, Marine Brief sends the forecast that matters for your vessel, where she actually is — wind, gusts, sea state, model confidence and go/no-go passage windows. No apps to open, no charts to decode.

Daily morning brief

Wind, gusts, sea state, rain and a plain-language verdict for the day — at your vessel's live AIS position, delivered at the time you choose each morning.

Passage windows

Ask "passage to Calvi" and get the calmest departure window over the next 4 days, scanned along the whole route at your cruising speed.

Gale & threshold alerts

Proactive warnings when gusts or seas are forecast to breach your limits in the next 24 hours — plus multi-model confidence scores.

How it works

Marine Brief pulls live forecasts at your vessel's AIS position, compares them across the world's leading weather models, and delivers a plain-language verdict — no app, no charts to decode.

1

Track your vessel

Your MMSI gives us your boat's live position via AIS. No MMSI? Drop a WhatsApp pin or set a home port.

2

Fetch the forecast

Wind, gusts, seas and rain are pulled from Open-Meteo at your exact coordinates — land and marine layers combined.

3

Compare the models

Seven global wind models and four wave models are run side by side. Where they agree, confidence is high. Where they split, we tell you.

4

Deliver on WhatsApp

Your daily brief arrives at the time you set. Threshold alerts fire every 3 hours when gusts or seas breach your limits.

Weather models we use

Wind & atmosphere — each service blends its global and high-resolution local model automatically:

ECMWF IFS NOAA GFS DWD ICON Météo-France UK Met Office JMA (Japan) GEM (Canada)

Sea state — dedicated wave models for marine conditions:

Météo-France WAVE ECMWF WAM DWD GWAM NOAA GFS-Wave

Model confidence

We don't just show one forecast — we measure how much the models agree. A tight spread means you can trust the numbers. A wide split means plan with caution.

Every brief includes separate wind confidence and sea confidence scores. When confidence is low, we show the range each model predicts.

High
91%
Moderate
72%
Low
48%

Example: "Wind confidence: High (91%) · 7 models" or "Split on gusts: 18–32 kt".

Register your vessel

Tell us about your boat and where to reach you. After checkout your briefings start the very next morning.

99€/ Year

15-day free trial — you won't be charged until it ends. Cancel anytime. One vessel per subscription.

  • Daily brief at your vessel's position, at the time you choose
  • Unlimited on-demand forecasts & questions on WhatsApp
  • Passage-window planning along your routes
  • Gale and threshold alerts, every 3 hours

Vessel & contact details

Include the country code — this is where your briefs arrive.
Local time for your morning briefing.

Change anytime on WhatsApp — send brief time 08:30 or timezone Europe/London.

9 digits — lets us track your position via AIS.

Alert thresholds

Get a WhatsApp warning when forecast gusts or seas are expected to exceed these limits in the next 24 hours. Change anytime on WhatsApp — send alert gusts 25 or alert seas 1.5.

Alert when gusts are forecast to reach this speed.
Alert when wave height is forecast to reach this level.
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