CatchWindow fishing intelligence

Boulogne-sur-Mer, France Daily Water Report — August 24, 2026

Divers and sailors get the day’s cleanest brief at Boulogne-sur-Mer. Diving leads at 8.8 out of 10 on wind, waves, available clarity, and water temperature; sailing follows at 8 on a usable easterly, small seas, and broken cloud. Those are suitability scores, not safety stamps. Fishing and wildlife sit at 6.9, boating at 6.5, kayaking at 5, and surfing at 4.9, so the harbor is in play without being generous to every craft. Open-Meteo’s current conditions and forecast keep the breeze modest, a representative 9 knots from the east in a 6.7 to 10.4-knot band, with the sharpest gust of 22.2 knots near 15:00. Air runs 11.8 to 21.2 C and will feel cooler than the 14.9 C representative reading. No rain is indicated, pressure is 1021 hPa and falling, and the 32 km atmospheric visibility is for finding the horizon, not a claim about what you will see underwater. Fishing’s 6.9 leans on that falling pressure, the wind, and solunar timing, with the stronger windows at 08:29–10:29 and 20:29–22:29; the 14:59–15:59 minor overlaps the gustiest hour. The marine forecast keeps energy short and small: about 0.38 m at 4.85 seconds, a 0.3–0.6 m range, calmest near midnight at 0.34 m, with a 0.22 m swell from 13 degrees. That is why surfing cannot get started and why diving likes the day. NOAA CoastWatch puts sea-surface temperature near 20.5 C, 2.2 C above average. A 1.3 m/s current toward 326 degrees is the real small-craft tax, and it helps explain why kayaking lags sailing even though the rain stays off the board. Yesterday’s reconstructed comparison was a lighter harbor: 2.8-knot wind, 12.1 C air, and 1025.2 hPa. Diving held at 8.8, sailing sagged to 5.6, and boating and kayaking jumped to 8.8 and 7.8. Today’s extra breeze simply flipped that trade. Forecasts for the coming days keep waves under half a meter through Wednesday, then rain chances rise and seas build toward 1.4 m by Friday and as high as 2.1 m by Sunday. Best bet: take the morning solunar window for a dive in that unusually warm water, then use the easterly before the midafternoon gusts if you came to sail.