Show HN: SwellSlots – Grid Based Surf Forecast App with a Street Fighter 2 UI https://ift.tt/azxFTfP

Show HN: SwellSlots – Grid Based Surf Forecast App with a Street Fighter 2 UI I discovered surfing last year in my early 40's its been a journey and a half and more fun than taking up golf at my age. SwellSlots squeezes swell height, period, wind speed/direction, and tide state into a color-coded weekly grid. One glance tells you when conditions are 'good' for the next few days. I wanted it to look completely different to what was out there (UI wise), as most of the forecast apps looks very clinical and cold. Some technical details: - SvelteKit + TailwindCSS 4, deployed on Hetzner (LOVE their cloud-console-ux! So simple) - 2,000+ surf spots worldwide (sourced via a separate AI-assisted pipeline I call "Surf Scout" — got ~80% accuracy, rest is manual curation) - The spot database was its own challenge — Google Maps couldn't distinguish surf beaches from swim beaches, and LLMs got about 75–80% of the way there I'd really appreciate feedback on: - Is the grid scannable enough on first visit? - Any surf spots missing from your area? - What else would you like to see? EDIT - Formatting https://swellslots.com April 7, 2026 at 01:52AM