This is a pre-passage source and decision desk, not a current forecast or clearance to depart. The map is centred approximately on the area, not on your route or a forecast-zone boundary.
A long high-latitude or transoceanic leg crosses forecast responsibilities and update cycles. Separate meteorology from current chart, ice, port and navigation warnings, and plan a dependable offshore receiving channel.
1. Primary sources
Open current bulletins and warnings for every sea area on the route. These links are starting points, not a promise that each covers the whole location; if unsure, identify the issuer through WMO–IMO.
2. Route and local effects
Mountain-sheltered channels and exposed Pacific exits need different information.
Chilean fjords can shelter a yacht while the Pacific approach and narrow passes remain exposed.
Use Chilean Navy marine warnings and local port-status information; compare outer-coast swell with fjord observations, and check tidal passage constraints separately.
How to use this source set
Start with the warning, then the marine text for the exact named area. If the route crosses a zone boundary, obtain both bulletins. Note issue and valid times, wind units and the meaning of wave height. Where a link opens an agency portal, navigate to its current marine product; a homepage is not itself a forecast.
Compare with an exposed station or buoy if available. Check its position and observation time: a sheltered station does not overturn a warning for an open channel. If a bulletin is missing or stale, identify the issuing service via WMO–IMO and defer the decision until current information is available.
Before-passage check
- Mark departure, exposed legs, arrival and feasible diversions; find the responsible named marine areas for each.
- Check warnings, issue and valid times; assess conditions when you expect to reach each leg, not only at departure.
- Compare wind and gusts, waves and swell, visibility, thunderstorms and local effects; do not infer a strait from a sheltered harbour.
- Compare recent observations where available, noting their time and exposure; a mismatch calls for another check.
- Set the next bulletin check, a reassessment trigger, an alternative and a backup communication channel.
Model map — optional
Windy is a third-party model display, not the issuer of official warnings. Choose a layer and check its valid hour and model run. Nothing loads until you click.
Without JavaScript, open the map separately.
If connectivity fails
Before departure, save the current official text bulletin and warning with issue time. Arrange another way to receive updates, such as an appropriate coastal broadcast, NAVTEX or satellite channel. A saved map cannot replace new warnings.
How to choose weather tools · All sailing areas
Scope: Source list assembled 25 September 2026; check its freshness and coverage before use. This public area guide is not a current personalised forecast, navigational notice service or safety verdict. Personalised forecasts with AI and experts are in closed testing; public booking is not open. The skipper makes the decision.
Use Canales before the ocean model
The Chilean Navy's current portal separates channel/interior-water forecasts from general maritime, oceanic and Antarctic products. Choose Canales y Aguas Interiores for the named channel itinerary, then add the outer marine product when the track exits to the Pacific. A sheltered fjord reading is not the weather at that exit. Keep the original selected-area text and valid time, not merely the home page's current news headline.
- Chilean Navy channels and inland waters — Channel and inland-water forecast selection; original text requires chosen area.
- Chilean Navy marine weather — Distinct maritime, channel, oceanic, Antarctic and port-status products.
Terrain and stream require local evidence
A channel route may reduce ocean swell while exposing the yacht to gust variation and narrow-passage workload. Do not infer local wind acceleration from one large grid or invent a channel current from the nearest high-water time. Use applicable hydrographic/tidal material and local observations, distinguishing them from model output. The Navy portal links tide and observing services; their issue/site checks remain necessary before use.
Port status is not the marine forecast
The Navy portal provides a separate Estado de Puertos entry. Check the actual intended port and instructions independently rather than treating a weather layer as permission to sail. In an interior-to-Pacific scenario, compare the exposed exit ETA and slower return/arrival case. Reconsider when a port status, visibility or the outer swell changes; a protected waiting anchorage still requires current local access and holding information.
Editorial review of this material: 27 September 2026. This date concerns the page content; check current forecast issue times and validity at the original sources.