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What are the sources for WeatherOnline forecasts?


The WeatherOnline forecasts are created by using a MOS system developed in-house with the most current US weather services model data (GFS). The statistical methods of the Model-Output-Statistic (MOS)-System were developed in cooperation with the Meteorological Department of the University of Bonn.

What is a MOS-System?


A Model-Output-Statistic (MOS)-System combines the data of the weather forecast model and the locally recorded data for any given point by transforming the model data from a coarse grid to detailed small scale areas.
In order to do so, one needs a large volume of past model forecast data as well as the corresponding recorded data for any given location. The MOS-System relates these two sets of data in an optimized fashion allowing development of the local weather forecast by using the most current model forecast.

What are the time intervals used in the temperature and icons of the local forecasts?


The forecasted maximum temperature always refers to a 12hour window from 6am to 6om local time.
The forecasted minimum temperature always refers to the 12hour window from 6pm of the day before the forecast day to 6 am of the forecast day.
The weather icon for the morning refers to the time between 6am and 12pm local time, the icon for the afternoon is valid from 12am to 6pm local time and the evening icon refers to the time from 6pm to 12am local time.

How often are the current weather conditions and forecasts updated?


The current weather information as well as the satellite images are updated every 30 minutes whereas the radar images are being updated every 15 minutes.
The local weather forecasts as well as the weather charts are updated 8 times a day. The updates start at 2 am CEST or 3 am CEST depending on daylight saving time and continue on a three hourly bases.


Nearby Weather Stations - Acharnae Distance
Tatoi Palace 6.2 km
Elliniko Airport 19.4 km
Elefsina Airport 20.5 km
El Venizelos 26.5 km
Athens Airport 28.5 km
Tanagra Airport 32.6 km
Skiathos 115.2 km
Skyros Airport 122.6 km
Syros Airport 149.9 km
Nea Anchialos Airport 156.3 km
Tripoli Airport 158.8 km
Milos Airport 163.5 km
Lamia 165.7 km
Paros Airport 189.3 km
Mykonos 191.6 km
Kythira 200.5 km
Naxos 207.9 km
Naxos Airport 208.4 km
Larissa National Airport 216.1 km
Kalamata 217.7 km
Lemnos Airport 249.8 km
Santorini 253.5 km
Patras Araxos Airport 258.0 km
Methoni 260.2 km
Chania Intl. Airport 262.7 km
Thessaloniki Airport 262.9 km
Chios Airport 268.4 km
Andravida 273.3 km
Çeşme 286.6 km
Serres 304.8 km
Kavala/Chrisoupolis 309.9 km
Kozani 314.5 km
Zakynthos Airport 319.1 km
Heraklion Airport 322.0 km
Tympaki Airport 327.7 km
Mytilene 334.1 km
Preveza 341.2 km
Kastelli Airport 342.3 km
Gevgelija 342.7 km
Ayvalık 352.2 km
Leros 353.2 km
Samos Airport 356.0 km
Sandanski 357.7 km
Cephalonia Airport 359.9 km
Çanakkale 361.7 km
Dikili 365.0 km
Kastoria Airport 365.5 km
Ioannina 366.5 km
Çiğli Air Base 367.3 km
Alexandroupolis Airport 370.4 km
Demir Kapija 379.4 km
Florina 380.1 km
İzmir Adnan Menderes Airport 381.4 km
İzmir 383.8 km
Berovo 384.3 km
Sitia Airport 391.5 km
Kuşadası 392.1 km
Balıkesir Koca Seyit Airport 394.0 km
Kos Airport 395.4 km
Bitola 403.0 km
Kardzhali 404.3 km
Prilep 411.9 km
Štip 413.5 km
Manisa 415.3 km
Musala 418.4 km
Korçë 420.9 km
Bodrum 424.7 km
Plovdiv 426.4 km
Milas- Bodrum Airport 446.1 km
Gjirokastër 449.2 km
Ohrid Airport 449.4 km
Kriva Palanka 449.6 km
Ohrid St. Paul AP 451.9 km
Corfu 453.4 km
Sarandë 455.1 km
Aydın 458.9 km
Datça 459.3 km
Skopje-Petrovec 461.3 km
Akhisar 465.8 km
Sofia 467.6 km
Karpathos 468.8 km
Edirne 479.4 km
Mourgash 484.2 km
Lazaropole 490.3 km
Balıkesir 490.4 km
Vranje 500.9 km
Pozharane 502.3 km
Tetovo 507.8 km
Kuçovë 510.8 km
Elbasan 512.9 km
Tekirdağ 514.9 km
Bandırma 521.6 km
Peshkopi 522.3 km
Vlorë 533.5 km
Kırklareli 535.0 km
Leskovac 540.4 km
Sliven 544.4 km
Kukës 549.8 km
Pristina Airport 551.6 km
Yzberish 551.9 km