Agios Ioannis Temperature by Month
Agios Ioannis in Cyclades, Greece sees significant seasonal temperature differences, with daytime highs between 15°C (59°F) in January and 27°C (81°F) in August, averaging 20°C (68°F) annually. Explore the full monthly breakdown below.
Agios Ioannis Monthly Temperatures
The climate in Agios Ioannis is known for significant temperature differences throughout the year. At night, this contrast is just as clear, with lows ranging from 24°C (75°F) in August to 11°C (52°F) in January.
The chart below illustrates the average maximum day and minimum night temperatures in Agios Ioannis by month:
The coldest point of the day usually falls between 4 AM and 6 AM, with temperatures peaking around 3 PM.
The chart below shows the average temperature throughout the year:
Temperature: Agios Ioannis vs Greece
The map below shows the annual temperature across Greece. You can also select individual months if you want to compare a specific time of year.
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Agios Ioannis vs World: Temperature Compared
Agios Ioannis's average annual maximum temperature is 20°C (68°F). To put that in context, here's how it compares to a few well-known destinations:
Lisbon, Portugal averages 21°C (70°F) annually — warm summers, mild winters, and rain mainly in the cooler months.
Toronto, Canada averages 13°C (55°F) annually, with cold snowy winters balanced by genuinely warm summers.
New York City, USA averages 17°C (63°F) a year, with hot humid summers and cold winters that bring regular snowfall.
Melbourne, Australia averages 20°C (68°F) annually — known for unpredictable weather, with four seasons sometimes happening in one day.
What Does the Temperature Feel Like in Agios Ioannis?
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 Agios Ioannis, 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 27°C (81°F) with 70% humidity — conditions that feel high. 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.
Global average temperatures have risen by around 1.2°C since the pre-industrial era, and the effects are visible across many regions. Winters are milder on average, with fewer frost days and less snow in many parts of the world. Heatwaves are more frequent and more intense, and Europe's summers of 2018, 2019, and 2020 all set records.
Summers are also getting drier in some areas, while winter rainfall has increased in others. This contributies to higher river levels and more flooding. In many countries, spring arrives earlier and autumn lasts longer. It has knock-on effects for wildlife, agriculture, and local ecosystems.
For more on Agios Ioannis's weather — including monthly rainfall, sunshine hours, and humidity — visit our Agios Ioannis climate page.
