All About Crete Weather. Weather in Agia Galini. This detailed 10 Day Weather Forecast in Crete for Agia Galini, Rethymnon Prefecture is prepared for the local ex-pat residents and holidaymakers. Agia Galini (Greek: Αγία Γαλήνη) is favourd by holiday visitors from Germany, the Netherlands and Spain with fewer British and Irish visitors. Almost perched on a cliff face the resort and port keeps the visitor fit with the energetic walks along the streets and down to the beach side. The accomodations are highly rated, as are the rustic and colourful tavernas and kafeneios. Vehicles have to be parked at the top end of the village. Holiday Weather Tip: Try to avoid going out between 11am and 3pm during the hottest months of July and August when the sun can at at times be unbearably hot. But if you like the extreme heat just remember that while Agia Galini is a compact town that any walking requires many steps to get down and more importantly up from the beach area.