The Blue Lagoon is shallow water between two islets: wind clouds it, and with a swell the boats change the order of stops or stay at Mellieha. And in high summer the midday heat on shadeless Comino is no joke.
Overcast clouds
Indicative reference based on OpenWeatherMap data for Comino. Whether to sail and where to anchor is always the skipper’s call. Your lagoon pass is not refunded if the boat does not go: match the day to the weather.