Tide and Weather - SurfTideΔ

SurfTideΔ is a dedicated Chrome extension designed for surfers, fishermen, and marine sports lovers in Japan. It offers detailed tide graphs for over 340 locations throughout Japan, without needing to download additional tide data, thanks to its unique tidal anharmonic constant calculations. The app visually displays current tide status with a flashing indicator, alongside sunrise and sunset times, making it easy to track tide movements in real-time.

Beyond tides, SurfTideΔ provides hourly weather forecasts for 7 days, including crucial wave information like wind direction, speed, wave height, and cycle—vital for surfers assessing conditions. Users can access up to 26 detailed weather map charts showing past, present, and future weather conditions. The extension also highlights optimal fishing times based on local tide cycles and offers daily news updates on surfing, fishing, and related topics, all integrated via Google news feeds. Unique features such as moon phases, seawater temperature, and tidal terminology (in Japanese Kanji) make it a comprehensive tool for marine enthusiasts focused on Japanese coastal regions.