Porto Heli Temperature by Month

Porto Heli in Peloponnese, Greece sees significant seasonal temperature differences, with daytime highs between 14°C (57°F) in January and 30°C (86°F) in August, averaging 21°C (70°F) annually. Explore the full monthly breakdown below.

Visitors to Porto Heli can expect significant temperature changes throughout the year. Nighttime temperatures also vary widely, ranging from 25°C (77°F) in August to 10°C (50°F) in January.

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

Daily lows are most common between 4 AM and 6 AM. By 3 PM temperatures reach their daily high, driven by peak solar heating.

The chart below shows the average temperature throughout the year:

Porto Heli's average annual maximum temperature is 21°C (70°F). To put that in context, here's how it compares to a few well-known destinations:

Barcelona, Spain has an annual average of around 21°C (70°F), with warm summers and mild, fairly short winters.

Queenstown, New Zealand averages 10°C (50°F) annually, remember seasons are flipped, so its coldest months fall in June and July.

New York City, USA averages 17°C (63°F) a year, with hot humid summers and cold winters that bring regular snowfall.

Tokyo, Japan averages 21°C (70°F) a year, with hot summers, cool winters, and a well-defined cherry blossom spring.

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.

Seasonal temperature shifts influence more than just how warm it feels, they also drive changes in rainfall, cloud cover, and wind patterns throughout the year.

Warmer air holds more moisture, which tends to mean heavier or more frequent rain during the warmer months. When temperatures drop in winter, any precipitation that does fall is more likely to come as snow or sleet, though in Porto Heli this rarely lasts long on the ground.

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