Monday weather: noticeable drop, rain nationwide

The national weather service (EMY) announced, in the bulletin issued on Sunday 13 September 2026, a noticeable temperature drop across the whole country on Monday 14 September 2026, compared to the values recorded over the weekend. According to the forecast, generally clear weather is expected across almost the whole country on Monday morning, with cloud gradually increasing locally during the afternoon and remaining until late evening. EMY describes this as a day marking the first substantial transition from the summer conditions of recent days to a more autumnal setting, though it does not give specific regional temperature figures in its bulletin. The service stresses that this change will be felt across the whole country, regardless of geographic region, and advises the public to follow the next updates of the official weather bulletin.

In western and northern mainland areas, EMY forecasts local rain and isolated storms, expected to be more intense than in the rest of the country. In the rest of the mainland the weather starts out clear, with scattered cloud appearing in the afternoon and temporary rain not ruled out in mountainous and semi-mountainous areas of the interior, mainly during the afternoon and evening hours. This comes just one day after the rain and storms the same service had recorded for Sunday 13 September, a reminder that September weather remains unsettled from day to day, with quick changes of scene. Residents of mountainous and semi-mountainous areas are urged to bear in mind the possibility of temporary rain, especially towards the end of the day, when the bulletin says the greatest cloud develops. In lowland and coastal mainland areas, by contrast, conditions are expected to remain broadly mild, without significant phenomena.

At sea, winds are expected to blow mainly from northwesterly directions, with intensity reaching locally 5 to 6 Beaufort in several sea areas of the country. In the Dodecanese, EMY specifically warns of strong northwesterly winds, more intense than in other sea areas. The bulletin does not mention any departure ban, but this intensity is usually accompanied by increased swell, which can affect ferry routes on the open Aegean crossings, especially the lines serving the Dodecanese. This is something travellers to and from the islands should bear in mind before planning their trips, checking in good time with port authorities and ferry companies for any schedule changes. Reduced visibility expected locally during the evening hours adds to the factors requiring attention, both for those at sea and for those travelling on roads with reduced light on Monday evening.

EMY places the forecast for Monday 14 September 2026 within the broader context of a seasonal transition, as the country gradually moves on from the summer scene of recent weeks, such as the African dust and high temperatures recorded on Saturday 12 September, towards more autumnal conditions with rain and lower temperatures. It has not yet been announced how long this cooling will last, nor whether a further change of scene will follow in the coming days, as the service updates its bulletin daily and has not yet given a longer-term forecast. Until there is a further update, residents in western and northern areas are urged to be prepared for rain, while attention is advised across the whole country to the changes in wind and visibility described in the official bulletin. EMY is expected to return with further data in its upcoming weather bulletins, as the picture of the atmosphere over the country develops.