The most popular holiday season is from Easter to October, with temperatures averaging 20-21°C (68-70°F). These months give an average of 200 and 260 hours of sunshine. Rainfall is mainly during the cooler months. The sea is 17°C (63°F) on average during the summer.

Normal beach and holiday wear for summer, with some warmer clothing as there are often sea breezes. Warm winter wear and rainwear are advised.

Guernsey is situated in the Gulf of St Malo, 50km (30 miles) from the coast of France and 130km (80 miles) from the south coast of England. The cliffs on the south coast rise to 80m (270ft), from which the land slopes away gradually to the north. Guernsey is an ideal centre for excursions to the other Channel Islands and France. The islands of Alderney, Brecqhou, Herm, Jethou, Lihou and Sark are dependencies of Guernsey.