Hydra Temperature by Month

The average annual maximum temperature in Hydra, Hydra, Greece is 22°C (72°F), with daytime highs ranging from 15°C (59°F) in January to 30°C (86°F) in August. This page covers monthly averages, day-night differences, and how Hydra compares to cities worldwide.

The weather in Hydra experiences significant differences between warm and cold seasons, with big shifts in temperature. At night, minimum temperatures range from 26°C (79°F) in August to 11°C (52°F) in January.

The chart below illustrates the average maximum day and minimum night temperatures in Hydra by month:

The coldest point of the day usually falls between 4 AM and 6 AM, with temperatures peaking around 3 PM. August, the city's warmest month, gets 340 hours of sunshine.

The chart below shows the average temperature throughout the year:

Hydra's average annual maximum temperature is 22°C (72°F). To put that in context, here's how it compares to a few well-known destinations:

Athens, Greece sits at 23°C (73°F) on average, with hot dry summers and mild winters characteristic of the Mediterranean.

Glasgow, Scotland averages 13°C (55°F) a year, mild but often grey, with cold winters and rarely hot summers.

Chicago, USA averages 15°C (59°F) annually, known for extreme seasonal swings, from bitterly cold winters to warm summers.

Brisbane, Australia averages 26°C (79°F) a year, with warm winters and hot, humid summers.

Temperature alone doesn't tell the whole story, humidity plays a big role in how warm or cold it actually feels. High humidity in summer makes the heat feel more intense, particularly once temperatures climb above 25°C. In winter, the same humidity can make cold air feel sharper than the thermometer suggests.

In Hydra, January is the coolest month, with average highs of 15°C (59°F) and humidity around 72%, considered high. In August, the warmest month, temperatures average 30°C (86°F) with 46% humidity, conditions that feel moderate. For a full picture, see our humidity page.

Climate temperature data is typically calculated as a 30-year average. This smooths out year-to-year variability and gives a more reliable picture of what a place is actually like, rather than what happened in any single unusual year.

The readings come from a range of sources, land-based weather stations, ocean buoys, ships, and satellites. That data is collected by weather services around the world, then pooled, quality-checked, and averaged to produce the climate records you see here.

Whether a city sits on the coast or deep inland makes a significant difference to its climate. Coastal areas tend to have more stable temperatures year-round, large bodies of water absorb heat slowly in summer and release it gradually in winter, keeping extremes in check. Cities far from the sea don't benefit from that buffer, which is why continental climates tend to have hotter summers and colder winters than their coastal counterparts at the same latitude.

For more on Hydra's weather, including monthly rainfall, sunshine hours, and humidity, visit our Hydra climate page.