Generally clear weather is forecast for today, Monday, according to the National Meteorological Service. During midday and afternoon hours, local clouds will appear over the mainland, with the possibility of isolated showers mainly in the mountainous areas of central and northern Greece.
In the west, northwesterly winds of 3 to 5 Beaufort will prevail, while in the east they will blow with intensity of 4 to 6 Beaufort. In the central and southern Aegean, winds may strengthen locally up to 7 Beaufort.
Temperature will show a slight further increase. On the mainland it will reach 36 to 37 degrees Celsius and locally in eastern Central Greece and eastern Peloponnese up to 38 degrees. In the Ionian, up to 34 degrees Celsius are expected, while in the Eastern Aegean islands, the Dodecanese and southern Crete, temperatures will range between 35 and 36 degrees. In the rest of the island country they will reach 31 to 32 degrees.
According to Yannis Kallianos, this is not a heatwave, but the “familiar summer heat of July“, with values that in some mainland areas may reach locally up to 40 degrees Celsius.
At the same time, strengthened northerly winds (meltemia) will blow, making the coming days dangerous for wildfires.
According to the meteorologist, temperatures of 36-38°C are expected in several mainland areas of the country, while locally they may reach 39°C or 40°C, mainly:
- in Thessaly
- in Boeotia
- and in Phthiotida.
For Athens, the maximum temperatures of the week are expected to remain steady around 37-38 degrees Celsius.
Theodoros Kolydas referred to the temperature development for the rest of July in a post on “X”.
As the meteorologist noted, from 20/7 onwards, there is increasing uncertainty – mainly in the GFS. The end of the period shows low reliability, especially regarding the exact temperature value or the intensity of the heatwave.
“The ECMWF, although showing a more “tight” ensemble system and maintaining smaller spread, shows differentiation from 20/7 onwards. In the latest meteogram of Athens, until July 18 we observe that the dispersion is small, so the forecast is reliable. Therefore from July 13–19 the temperature ranges between 27–36°C, with daily fluctuations, while from July 20–22 a heat wave is likely, but with large dispersion, meaning there is high uncertainty.“, Theodoros Kolydas states in his post.
“The daily variation (min–max) is considered normal for summer, with nighttime minimums close to 26–28°C, meaning warm nights.“, the meteorologist concludes.
📌ΛΙΓΑ ΛΟΓΙΑ & ΚΑΛΑ
✅Με βάση τα όσα αναφέραμε στο πρόσφατο άρθρο μας στο https://t.co/XB8ezsF4u8 ( https://t.co/jx3FMBGf36 ) μπορούμε να εμπιστευτούμε και τα δύο μοντέλα ( ECMWF και GFS) έως περίπου τις 18 με 19 Ιουλίου 2025 ερμηνεύοντας τα μετεωγράμματα στα 850 hPa .
✅Από… pic.twitter.com/j6DqEjtZTR— Theodoros Kolydas (@KolydasT) July 13, 2025
Today’s weather according to the National Meteorological Service
MACEDONIA, THRACE
Weather: Generally clear. During midday and afternoon hours, local clouds will develop and isolated showers may occur in the mountains of Macedonia.
Winds: Variable weak and in the east, easterly northeasterly up to 4 Beaufort.
Temperature: From 18 to 36-37 degrees Celsius. In western Macedonia it will be 2 to 4 degrees lower.
IONIAN ISLANDS, EPIRUS, WESTERN CENTRAL GREECE, WESTERN PELOPONNESE
Weather: Generally clear. During midday and afternoon hours, local clouds will develop and isolated showers may occur in the mountains of Epirus and western Central Greece.
Winds: Northwesterly 3 to 5 Beaufort.
Temperature: From 19 to 37 degrees and in the Ionian islands up to 34 degrees Celsius. In the interior of Epirus the minimum 2 to 4 degrees lower.
EASTERN CENTRAL GREECE, EVIA, EASTERN PELOPONNESE
Weather: Generally clear. During midday and afternoon hours, local clouds will develop in the mountains.
Winds: From northern directions 3 to 5 and in the east locally 6 Beaufort.
Temperature: From 20 to 37 and in eastern Central Greece and eastern Peloponnese locally 38 degrees Celsius.
CYCLADES, CRETE
Weather: Clear.
Winds: Northern northwesterly 4 to 6 and in the east temporarily locally 7 Beaufort.
Temperature: From 23 to 31 degrees Celsius. In Crete the maximum will reach 33 to 34 degrees and in southern Crete 36 degrees Celsius.
EASTERN AEGEAN ISLANDS – DODECANESE
Weather: Clear.
Winds: From northern directions 5 to 6 and temporarily locally 7 Beaufort.
Temperature: From 23 to 35-36 degrees Celsius.
THESSALY
Weather: Generally clear. During midday and afternoon hours, local clouds will develop and isolated showers may occur in the mountains.
Winds: Variable weak and in the Sporades from northern directions up to 4 Beaufort.
Temperature: From 19 to 37 degrees and in the Sporades up to 32 degrees Celsius.
ATTICA
Weather: Generally clear.
Winds: From northern directions 3 to 5 and in the east locally 6 Beaufort.
Temperature: From 23 to 37-38 degrees Celsius. In the east the maximum 2 to 3 degrees lower.
THESSALONIKI
Weather: Generally clear. During midday and afternoon hours, local clouds will develop in the surrounding mountains.
Winds: Variable 3 to 4 Beaufort.
Temperature: From 20 to 36 degrees Celsius.
Forecast for Tuesday 15/7
Generally clear weather. During midday and afternoon hours on the mainland, local clouds will develop and in Epirus, Macedonia and locally in western Central Greece and Thessaly, showers and isolated thunderstorms will occur mainly in the mountains.
Winds will blow in the west northwesterly 3 to 5 and in the Ionian locally 6 Beaufort. In the east they will blow northerly 4 to 6 and in the Aegean locally 7 Beaufort.
Temperature will not show significant change. It will reach 36 to 38 degrees on the mainland, 34 to 36 degrees in the Ionian, Eastern Aegean islands, Dodecanese and southern Crete, and 31 to 33 degrees Celsius in the rest of the island country.
Forecast for Wednesday 16/7
Generally clear weather. During midday and afternoon hours on the mainland, local clouds will develop and in the northern mountains, showers are likely to occur.
Winds will blow from northern directions 3 to 5 and locally in the eastern mainland and the Aegean 6 Beaufort.
Temperature will not show significant change.
Forecast for Thursday 17/7
Generally clear weather. During midday and afternoon hours on the mainland, local clouds will develop and in the mountains, showers are likely to occur.
Winds will be variable 3 to 4 and in the south locally westerly up to 5 Beaufort.
Temperature will not show significant change.
Forecast for Friday 18/7
Generally clear weather. During midday and afternoon hours on the mainland, local clouds will develop and in the northwestern country, rain or isolated thunderstorms will occur locally.
Winds in the northeastern mainland and central and northern Aegean will blow southerly and in the rest of the country from western directions 3 to 5, in the south locally 6 Beaufort.
Temperature will not show significant change.
