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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 - Piraeus Distance
Elliniko Airport 11.1 km
Elefsina Airport 16.5 km
Tatoi Palace 24.5 km
El Venizelos 31.6 km
Athens Airport 35.3 km
Tanagra Airport 40.7 km
Skiathos 128.4 km
Skyros Airport 141.4 km
Tripoli Airport 143.3 km
Syros Airport 154.6 km
Milos Airport 157.0 km
Nea Anchialos Airport 161.4 km
Lamia 164.6 km
Kythira 182.1 km
Paros Airport 190.6 km
Mykonos 197.7 km
Kalamata 200.7 km
Naxos 211.2 km
Naxos Airport 211.5 km
Larissa National Airport 220.6 km
Methoni 243.1 km
Patras Araxos Airport 247.8 km
Chania Intl. Airport 250.1 km
Santorini 252.5 km
Andravida 261.6 km
Lemnos Airport 268.6 km
Thessaloniki Airport 274.3 km
Chios Airport 281.2 km
Çeşme 299.1 km
Zakynthos Airport 306.7 km
Heraklion Airport 315.0 km
Tympaki Airport 317.9 km
Kozani 318.5 km
Serres 319.7 km
Kavala/Chrisoupolis 328.0 km
Preveza 334.8 km
Kastelli Airport 335.7 km
Cephalonia Airport 349.3 km
Mytilene 349.4 km
Gevgelija 352.8 km
Leros 360.5 km
Ioannina 364.2 km
Samos Airport 365.8 km
Kastoria Airport 368.0 km
Ayvalık 368.1 km
Sandanski 371.6 km
Çanakkale 379.6 km
Dikili 380.1 km
Çiğli Air Base 380.4 km
Florina 384.3 km
Sitia Airport 388.3 km
Demir Kapija 388.9 km
Alexandroupolis Airport 389.2 km
İzmir Adnan Menderes Airport 393.6 km
İzmir 396.5 km
Berovo 396.7 km
Kos Airport 401.4 km
Kuşadası 402.7 km
Bitola 407.9 km
Balıkesir Koca Seyit Airport 410.1 km
Prilep 418.3 km
Korçë 422.3 km
Kardzhali 423.0 km
Štip 423.3 km
Manisa 428.5 km
Bodrum 432.2 km
Gjirokastër 446.8 km
Corfu 448.8 km
Sarandë 451.7 km
Ohrid Airport 452.5 km
Milas- Bodrum Airport 454.4 km
Ohrid St. Paul AP 455.0 km
Datça 465.7 km
Aydın 469.5 km
Skopje-Petrovec 469.5 km
Karpathos 470.2 km
Akhisar 479.6 km
Lazaropole 494.3 km
Edirne 498.2 km
Balıkesir 505.8 km
Pozharane 507.6 km
Kuçovë 510.4 km
Elbasan 514.3 km
Peshkopi 525.9 km
Vlorë 531.2 km
Tekirdağ 532.7 km
Bandırma 538.2 km
Sazan 552.4 km
Yzberish 552.9 km
Kırklareli 553.6 km
Tirana 554.3 km
Çorlu 574.6 km
Durrës 581.6 km