Exuma Islands: local passage checks beyond the Bahamas overview.
Forecast sectors and coverage
Obtain the Bahamas local marine issue and applicable NHC marine/tropical context. A US coastal product is not a local Bahamas warning; verify the island-group coverage and the bulletin’s issue/valid times.
Weather-sensitive legs
Separate the Exuma Bank side, ocean-facing Exuma Sound and crossings through cuts. The forecast wind/wave direction matters at the opening, not merely at the anchorage; stream data must be locally applicable.
Observations, sea state and reassessment
Confirm chart datum, local tide/stream publication and latest harbour information before evaluating a shallow entrance. No universal cut timing, stream measurement or under-keel calculation is supplied here.
Worked planning scenario — not a live forecast
For a bank-to-Sound itinerary, make the cut a separate timed leg with its own information requirements. A later start may improve wind yet change the cut conditions; compare these together without deriving stream phase from high-water time alone.
Official products by task
- Bahamas Department of Meteorology — Official local weather-service portal; locate current marine bulletins and verify island-group coverage.
- NHC marine products — Tropical Atlantic marine coverage; select the current product and its geographical limits.
- NHC tropical cyclone information — Advisories, watches/warnings and outlooks; a track cone is not the full wind or wave footprint.
- NOAA NDBC observations — Station map and timestamped buoy/coastal records; inspect sensor availability and exposure.
Sector names help you locate the issuing product; they are not an automatic route-coverage match. Open the current issue and check boundaries, issue time and validity. This page does not display current warnings; an unavailable product does not mean no hazard.
Map orientation
The approximate map centre is not an approach waypoint, track, depth survey or forecast-zone boundary. The third-party map loads only on request.
Build your passage brief
Bring your route, leg timings, vessel and crew profile, checked sources and reassessment triggers into the brief. Personal AI analysis and expert review are available to invited closed-test participants; a port page does not extend the calculation service’s coverage.
A Sailing Weather editorial guide to local conditions, practical passage preparation and marine-weather sources. Source and structure review: 27 September 2026. For a specific passage, check current issues, validity and forecast coverage. The skipper retains the final decision and responsibility.
Bank-side comfort does not describe Exuma Sound
Write separate rows for Exuma Bank, Exuma Sound and the opening that connects them. On a Sound-side passage, the exposed part may dominate comfort and arrival even when the bank looks flat. Keep the offshore forecast as context and obtain the Bahamas local issue. A weather map centred on the islands does not identify the navigable route or the conditions inside a chosen cut.
- Bahamas Department of Meteorology — Official national entry point, radar and forecast links; no pass-specific current guarantee.
- NHC marine products — Broader Gulf, Caribbean and tropical Atlantic/Pacific context; confirm the current product at the issuer. Direct product verification is limited; obtain the current issue from the issuer.
Local stream timing needs local evidence
Do not shift a Florida or Nassau high-water time to an Exuma opening without a documented local relationship. Depth and current are different variables, and the timing of their extrema need not coincide. Record the source, date, datum and applicability of any local guidance. If only a broad tide prediction is available, describe it as incomplete evidence for the opening rather than a calculated favourable transit window.
- Bahamas Department of Meteorology
- NOAA CO-OPS Tides and Currents — Separate measured water levels, tide predictions, current predictions and model forecasts.
Use the cut ETA as the comparison point
For a bank-to-Sound day, compare departure alternatives at the opening, the exposed leg and the final anchorage. A later departure can reduce the forecast wind while shortening daylight or changing local stream conditions. Keep those effects in the same briefing. Reassess when any required local information is missing, and do not treat a nearby cove as a guaranteed substitute without checking its access and protection.
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.