CatchWindow fishing intelligence

Tokyo Bay, Japan Daily Water Report — September 1, 2026

Tokyo Bay is looking particularly inviting today for boating and diving enthusiasts. With a stellar boating score of 8.6/10 and diving at 8.2/10, the conditions are nearly perfect for those wanting to enjoy the water. The bay is calm, with wave heights hovering around a gentle 0.12 meters at midday, making it an ideal time for a smooth sailing or a serene dive. The wind is relatively mild, blowing from the north-northeast at about 5 knots, occasionally gusting up to 10 knots. This moderate breeze provides just the right amount of challenge for sailors, who will find a decent 6.4/10 score for their activities today. The air is warm, with temperatures feeling like 30.9°C, so remember to stay hydrated and wear sunscreen. For those with fishing on their minds, today scores a respectable 7.5/10. While we lack tide data, the solunar periods suggest the best bites might occur during the major periods between 2:05-4:05 AM and 2:05-4:05 PM. These windows align well with calm conditions and stable barometric pressure at 1017 hPa. Surfers, on the other hand, might want to temper their expectations. With a surfing score of 5.1/10, the small swells and short wave periods aren't offering much thrill today. However, the water temperature is a pleasant 27.3°C, slightly warmer than average, which could still make for an enjoyable paddle out. Looking ahead, expect increasing wind and a chance of rain in the coming days, especially by September 3rd, when precipitation likelihood jumps to 67%. The best bet for today? Take advantage of the calm waters and head out for a leisurely boat ride or a dive while conditions are at their peak.