Climate, Seasons, Geography, etc.

Click for Hydra’s day- and nighttime temperatures, hours of sunshine and daylight, rainfall, heat and humidity, and UV Index.

Large-scale, widespread fires are a constant danger on Hydra in the summer months. Most outbreaks start at the rubbish dump and are put out relatively quickly. In the past, however, some have gotten temporarily out of control and large portions of the island have burned.

Itself basically a 52 km² rock, the vast part of which is uninhabited, Hydra is characterized by rocky mountains and hillsides, pine-forested valleys, and 56 km of craggy coastline.

Hydra in spring can be cold and wet one day, then sunny and balmy the next. Temperatures tend to hover around 20°C (68°). Definitely pack a rain coat and some warmer clothes, as well as a solid walking shoe or boot.

Winter on Hydra starts late by northern standards, and throughout December and even January, you can find yourself in a T-shirt and shorts.

A new desalination plant opened officially on Hydra on Monday, August 25, giving the island access to water at almost a third the previous price; it should pave the way for similar plants in other parts of the country. This water is deemed safe to drink, although many locals still prefer to drink and cook with bottled water.