According to the 53 meteorological stations of the National Observatory of Athens/meteo.gr, the average monthly maximum temperature in January 2023 was the highest since the observatory began operating continuously in 2010.
The map shows the deviations of the average maximum temperature in January 2023 by geographical department, based on the average temperature of the period 2010-2019.
The following graph presents the ranking of the month of January by year, according to the average monthly maximum temperature.
The ranking shows that this year's January was the warmest, at least since 2010, in Northern Greece, Thessaly, the Peloponnese and the Aegean Islands (except Crete). In the rest of the regions it ranks as the second warmest, behind 2014 for Western Greece, and behind 2021 for Central Greece and Crete.
Northern Greece and Thessaly recorded the most days with positive temperature deviations. In Makrohori Veria, 29 out of the 31 days of the month were warmer than the average in the period 2010-2019, as in Trikala and Dion, 28 days positive deviations were recorded.
In Athens the average monthly maximum temperature deviation was +1.8°C with 25 days warmer than normal levels for the season. In Thessaloniki the warmest January since 2010 was recorded, with a positive deviation of +3.6 °C and 24 days of positive temperature deviations.
Another interesting fact is that no negative average monthly temperature deviations were recorded at any meteorological station. The graph below shows the deviations of average maximum temperature from the average of the period 2010-2019 at all 53 meteorological stations.
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