CatchWindow fishing intelligence

Sand Island, Midway Atoll Daily Water Report — October 4, 2026

Sand Island gets a qualified, wind-aware thumbs-up for sailing and diving today, but it is a poor day to treat the water casually. Fresh easterlies around 23 knots, gusting to 29, are working against a substantial 3.4–3.9 m sea state. The 2.86 m southeast swell and shorter 2.06 m wind waves make for a mixed, energetic surface rather than a smooth run offshore. Boating rates only 4.5/10 and kayaking 4.3/10; those numbers are not safety guarantees, but they accurately flag a day when small craft will earn every mile. The most useful timing is early: dawn arrives at 6:21 AM, sunrise is 6:44 AM, and the first solunar major period runs 6:58–8:58 AM as the tide rises toward an 11:11 AM high of 0.42 m. Fishing scores a middling 5.8/10, down sharply from yesterday’s reconstructed 8/10, with the stronger wind the obvious operational tradeoff. A second solunar major period, 6:58–8:58 PM, overlaps the evening rise from the 5:28 PM low, but darkness and persistent wind demand conservative planning. Diving leads the day’s practical options at 6.6/10, though it too slips from yesterday’s 7.1/10. Water is warm at 26.7 C, and the available ocean-color reading is low at 0.06 mg/m³, but that is not an underwater-visibility reading. Surface conditions remain the limiting factor. Sailing earns 6.7/10, with enough breeze for purpose but gusts, full cloud cover, and large seas taking the shine off. The pressure is rising from a 1014–1020 hPa range, while rain is possible from 3 AM through 9 PM despite a representative total of zero. The sea should ease somewhat Monday and Tuesday, with waves forecast at 2.4–3.3 m Monday and 2.1–2.6 m Tuesday, though rain chances rise and winds remain brisk. Another larger pulse is forecast late next week, especially Friday. Best bet: make the early-morning rising tide your window, and let the 3.8 m sea state—not enthusiasm—set the day’s limits.