CatchWindow fishing intelligence

New London, CT Daily Water Report — August 27, 2026

This is a diving and boating day, no question. Scores of 7.6 and 7.2 respectively top the board, and the conditions backing them up are about as cooperative as late August gets around New London. The representative wind is a light SSE breeze at just 4 knots, gusting to 11, and while the day’s strongest gust hits nearly 20 knots at 2 p.m., the overall wave range stays a tame 0.3 to 0.5 meters. The calmest patch actually arrives right around midnight at 0.28 meters, but for practical daytime planning, expect modest chop that won’t ruin a dive or a cruise. The marine layer is thick—95% cloud cover, visibility just 13.2 km—but that keeps the glare off the water and the air temperature at a pleasant 22°C, feeling warmer near 25°C with the humidity. The standout number is the water temperature: 22.2°C at the surface, a full 0.8°C above the long-term average. That warmth, combined with the very high chlorophyll reading, suggests a plankton bloom in full swing. The current is running a solid 1.1 m/s toward the west-northwest, so divers should factor that drift into their exit plan, especially on a falling barometer (1016 hPa and dropping). The fishing score of 6.6 is respectable but not stellar; the solunar major window from 10:06 to 12:06 aligns with decent timing, and the light wind helps keep presentations natural, but the high chlorophyll can sometimes muddy the bite window. Wildlife watchers get a 6.8, helped by similar timing and calmer conditions. Compared to recent days, today’s diving score holds steady with yesterday and the previous four days—all at 7.6—so the underwater conditions remain consistently good. Boating, however, pulled back from yesterday’s 7.8 and the 8.4 we saw on August 22, largely due to that afternoon gust potential. Kayaking lands at 6.4, down from 7.3 yesterday, as the southerly wind picks up more than the 1.4-knot calm we had then. Surfing at 5.1 is mediocre; the 0.36-meter swell from the south is short-period and gutless, best left for beginner practice if you’re determined. Looking ahead, the next few days lean even calmer. Friday and Saturday both hold peak winds around 7 knots with zero to negligible rain chances, and wave heights shrink to 0.3–0.4 meters. Sunday stays flat but introduces a 24% rain chance, then Monday and Tuesday bring a more active pattern with precipitation odds climbing to 37% and waves pushing back up to 0.7 meters by Tuesday. If you want the glassiest deck, Saturday morning is your best bet. Best bet: Get on the water before the dew point climbs and the afternoon gusts wake up—that warm, calm window from mid-morning through early afternoon is the sweet spot for dropping a line or a tank.