A low-pressure front will bring heavy rain and strong winds to Finland this weekend, with a storm warning in place for the Gulf of Finland.
The front is expected to form on Friday evening over northern Germany, before moving in a northeasterly direction towards Finland, where it is forecast to run along the south coast towards the northeast and east during Saturday.
The strongest winds over the weekend will likely hit the western parts of the Estonian coast, where gustss might be as high as 30 meters per second.
"Yes, even in the Gulf of Finland, the wind can reach storm force readings on Saturday afternoon and evening," predicted Yle meteorologist Matti Huutonen.
Boaters warned to check forecast, horizon
As sea conditions can quickly become dangerous in the expected conditions, boaters in particular are advised to keep a close eye on both forecasts and localised developments.
As it is now holiday season in Finland, there are likely to be plenty of recreational sailors in Finnish sea areas and inland waters over the weekend.
Typically, strong winds increase the size of waves and rainfall can be particularly heavy in sea areas. These heavy rain showers are expected to hit mainland Finland early on Saturday.
"Due to that low pressure, an area of heavy rainfall will spread to the southern parts of Finland in the early hours of the morning. It is likely to spread northwards, so that the afternoon will be very rainy in the southern and central parts of the country on Saturday," Huutonen said.
Rainfall will keep temperatures cool
With the low pressure front keeping the weather unstable, there is little prospect of a return to the high temperatures of the early summer.
Temperatures will instead range between 15 and 20 degrees Celsius in most parts of the country.
However, the weather conditions at the weekend are not expected to be as severe as the recent storm Päivö, when heavy rains and thunderstorms left nearly 60,000 without electricity.
"Storm Päivö was the end of the heat cycle. This is more of a strong low pressure," said Yle meteorologist Anniina Valtonen.