Windward Passage
Level with baseline, and rarely otherwise.
Normal −7% against its 2019–2023 baseline
Reading for — 6 days ago. Figures are a 30-day mean, so one quiet day does not move them.
Two years of daily transits
Month by month
| Month | Transits/day | vs baseline |
|---|---|---|
| October 2026 | 15 | −6% |
| September 2026 | 14 | −10% |
| August 2026 | 16 | +3% |
| July 2026 | 16 | +1% |
| June 2026 | 16 | +2% |
| May 2026 | 17 | +7% |
The 18 months before that
| Month | Transits/day | vs baseline |
|---|---|---|
| April 2026 | 16 | −1% |
| March 2026 | 17 | +9% |
| February 2026 | 16 | −1% |
| January 2026 | 14 | −9% |
| December 2025 | 13 | −18% |
| November 2025 | 16 | +0% |
| October 2025 | 14 | −16% |
| September 2025 | 16 | +1% |
| August 2025 | 17 | +5% |
| July 2025 | 17 | +5% |
| June 2025 | 16 | +1% |
| May 2025 | 15 | −4% |
| April 2025 | 17 | +5% |
| March 2025 | 16 | +2% |
| February 2025 | 16 | +1% |
| January 2025 | 15 | −7% |
| December 2024 | 14 | −13% |
| November 2024 | 15 | −7% |
Record high 19.2/day (December 2020), record low 12.7/day (December 2025), on the 30-day mean since January 2019.
Source
Daily transit counts derived from satellite AIS positions by IMF PortWatch, covering 2841 days from 1 January 2019.
Source: IMF PortWatch, https://portwatch.imf.org. PortWatch is published under IMF terms rather than CC BY 4.0, unlike the rest of the data on this site: the figures here are derived and transformed, and the underlying series is not republished.
One of the steadiest routes on the board
The Windward Passage runs between Cuba and Hispaniola. It is within a percent of its 2019–2023 baseline and within a couple of percent of last year, and its whole seven-year record spans roughly 13 to 19 transits a day.
Few routes here are this consistent.
Its one recent move
The largest single-month change in the record is December 2025, when the daily average fell from 16 to 13 — its record low. It recovered within two months and has been level since.
That is the shape to expect from this route: brief departures that return.
Why the steady routes matter
A board of 28 chokepoints is only useful because most of them are not moving. The Route Displacement Index measures how far traffic has shifted from its usual distribution, and a route that holds its share — as this one does — is part of what makes a shift elsewhere measurable.
The other Caribbean approaches are Yucatan, currently above its baseline, and Mona, level with its own.