Generic weather apps tell you the wind speed. They don't tell you whether Saturday is a good day to take your boat out of a tidal harbour and back. Sail Forecast does.
What it does
- Twice a day it pulls weather, marine and tide forecasts for a configurable home port.
- It scores each of the next 14 days against hard safety limits, then adds a qualitative rating on top.
- On demand, it plans tide-safe out-and-back sails and passages to named destinations.
- It records every run and highlights what changed since the last forecast.
- A mobile-first dashboard, with the port, boat, preferences and destinations all editable at runtime.
How it's built
A single Go service on an AWS Lightsail container service, backed by managed Postgres and deployed automatically on every push to main. It reuses the infrastructure of my AIS ship-tracking project to keep running costs close to zero.