Crossing the Atlantic: Seasons, Trade Winds and the Classic Routes

Every November and December, several hundred cruising yachts leave the Canary Islands bound for the Caribbean, riding one of the oldest and most reliable weather engines on the planet: the northeast trade winds. The Atlantic crossing remains the classic first ocean passage for good reasons. The route is proven over five centuries, the distances are manageable at roughly 2,700 nautical miles from the Canaries to Saint Lucia, and the seasonal rhythm is dependable enough to plan a life around. Dependable, however, is not the same as guaranteed, and the skippers who cross comfortably are the ones who respect the calendar's edge cases.

The Calendar That Governs Everything

Two dates frame the westbound trade-wind crossing. The Atlantic hurricane season officially runs to 30 November, which is why the classic departure window opens in mid to late November: the tropics have quieted, but the trades are established. At the other end, arrivals in the Caribbean by mid-January leave the spring free for the islands before the next season looms. Eastbound returns to Europe follow a different logic entirely, departing from Bermuda or the Azores between May and July, when the Azores High is stable and the westerlies of the higher latitudes are at their gentlest. Crews who stretch these windows usually get away with it; the ones who do not meet weather that no insurance policy covers.

The Southern Highway and Its Variations

The classic route drops south from the Canaries until the butter melts, as the old phrase goes, typically to around 20 degrees north, then turns west on the trade-wind motorway. The reasoning is current and consistency: the North Equatorial Current adds a knot of free speed, and the southern track keeps the boat in established easterlies away from the winter lows that sweep the northern Atlantic. Variations exist for good reasons. Boats departing from the Cape Verdes shave 400 miles but accept a flukier first week in the doldrum fringe. A more northerly direct route from the Canaries saves days in settled years but risks a beating from a late-season trough; the pilot charts, built from a century of observations, show the odds month by month and reward study.

• Depart the Canaries between mid-November and mid-December for the classic window.
• Carry fuel and water for 25 days even if the plan says 18; slow years exist.
• Plan the first week as the hardest: acceleration zones off the islands deliver 30-knot squalls.
• Book the landfall for daylight; Caribbean reef entries punish afternoon arrivals against the sun.

What the Passage Actually Feels Like

The crossing divides into three acts. The first week is boisterous: the northeast trades pile up two to three metres of swell, the boat surfs and rolls, and crews find their sea legs the hard way. The middle week is the reward, ten to twenty knots from astern, flying fish on deck at dawn, and the daily run settling into a rhythm of 140 to 170 miles for a well-sailed 40-footer. The final week brings the questions: the squalls grow taller and wetter near the Caribbean, chafe appears on lines that have run 2,000 miles, and landfall planning begins in earnest. Boats that arrive tired but intact share one trait: they slowed down at night from day one, reefing for the squall they could not see rather than the wind they had.

The Atlantic Is a Teacher, Not an Enemy

For all the preparation, the ocean sets the final exam. The crews that pass share habits, not luck: conservative departures inside the window, a boat inspected to the last shackle, a watch system that survives the third day, and the humility to run before the wind when the swell says so. Cross once, and the Atlantic stops being a barrier and becomes what it has been for five hundred years: a road, seasonal and serious, that rewards those who read its calendar correctly.