People enjoying the sunshine outdoors at Tokoinranta in Helsinki on the regional and municipal election day, 13 April 2025. LEHTIKUVA
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Temperatures in Finland are expected to reach their highest point so far this year, with forecasters predicting up to 23°C in southern regions by Good Friday. The warm weather follows several days of steady warming across the country and is forecast to continue through the end of the week.
According to meteorologists at Foreca, the 20-degree threshold may already be broken in western and southern Finland by Wednesday.
The warm air mass arriving from the south is expected to push daytime temperatures to unseasonably high levels in many parts of the country, particularly in the south and west.
On Tuesday, temperatures remained under 20°C nationwide but reached between 15°C and 17°C in the south. Central areas saw temperatures between 10°C and 15°C, while northern regions remained cooler at around 2°C to 10°C. Cloud cover and occasional rainfall persisted in parts of Lapland.
Wednesday is expected to be dry and sunny across most of Finland. Foreca’s forecast suggests that the south and west could see highs of 17°C to 20°C, with central Finland experiencing similar conditions. In Lapland, temperatures may rise to 10°C to 12°C in the south, but northernmost areas are likely to stay below 10°C.
Thursday is set to bring more variable conditions. A weak front moving south during the night may bring showers to central and southern areas, with snow possible in northern Lapland. Despite the cloudier conditions, daytime highs will remain above average, ranging from 15°C to 17°C in the south, around 10°C to 15°C in central Finland, and 7°C to 10°C in the north.
Foreca’s meteorologist Joanna Rinne said the highest temperatures of the week are expected on Friday, especially in southern Finland. In regions with clear skies, temperatures could rise to between 20°C and 23°C. In more widespread areas across the south and west, temperatures will likely range from 17°C to 21°C.
“Good Friday is shaping up to be the warmest day of the week,” Rinne told Iltalehti. She added that a colder front from the north could bring some localised thunderstorms and rain showers in parts of central Finland and around Oulu, though Lapland will remain mostly sunny but cooler.
The warm spell will begin to ease over the weekend. On Saturday, the cold front is forecast to move further south, bringing rain showers and cooler air. Despite increased cloud cover, southern Finland could still see temperatures between 15°C and 20°C. Central areas are likely to vary, with some locations such as Pohjanmaa falling below 10°C, while others, including North Karelia, may reach 14°C to 15°C.
By Sunday, colder air will likely dominate across the country. Foreca expects temperatures to fall below 10°C in most areas, and heavier rainfall is possible in the south. The forecast remains uncertain, but the trend points to a brief decline in temperatures.
Rinne emphasised that despite the weekend’s drop, no return to winter conditions is expected. “The spring conditions are here to stay,” she said. Daytime temperatures next week are still projected to remain above 10°C in most parts of the country, though night-time lows could bring localised frost in the south. Snowfall remains confined to parts of Lapland.
Looking ahead, long-range forecasts suggest above-average temperatures will continue through the end of April and into May. The final week of April, including May Day, is expected to be slightly warmer than usual, although variability remains high.
Foreca’s seasonal outlook for May and early summer also points to a warmer-than-average period, although there may be increased rainfall. Rinne noted that the precision of long-range forecasts for Finland remains limited, but the current trend supports continued mild conditions.
HT
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Source: www.helsinkitimes.fi
