High precipitation levels in the west in July
According to the statistics of the Finnish Meteorological Institute, July was normal in terms of the average temperature in nearly all of the country. The average temperature in September varied from approximately 17–18 degrees Celsius on the southern coast to approximately 11–14 degrees in northern Lapland. In much of the country, the average temperature was 0–1 degrees below the average of the 1991–2020 reference period.
The highest temperature in July was 31.1 degrees, which was recorded at Pyhtää airport on 12 July. The lowest temperature for the month, -2.0 degrees, was recorded at the Tulppio observation station in Savukoski on 20 July.
There were 15 hot days in July, one day fewer than the average number of hot days recorded during the statistical reference period 1991–2020.
July's precipitation levels exceptionally high in some places in the west
July was rainy particularly in the western part of the country, even unusually or exceptionally rainy in some places. In the eastern and northern parts of the country, monthly precipitation was mostly close to the long-term average or slightly below it.
The greatest amount of monthly precipitation was observed at the Karhila observation station in Multia, where 219.9 mm was recorded. The lowest amount of precipitation, 33.7 mm, was recorded at the Huhtilampi observation station in Joensuu.
On the 18 of July, a precipitation area moved from the southwest across Finland to the northeast, with the 24-hour accumulations at observation stations being exceptionally high, even record-breaking in some places. The greatest amount of rainfall in a single day was 114.2 millimetres, which was recorded at the Karhila observation station in Multia.
Less sunshine and fewer lightning strikes than usual
The entire country saw a lower number of sunshine hours than usual, even unusually low numbers were recorded in the south. Depending on the observation station, the number of sunshine hours was approximately 160–300 in July.
Approximately 11,000 cloud-to-ground lightning strikes were observed in July, which was significantly below the average of 36,600 cloud-to-ground strikes for the period 2002–2025.
Further information:
Weather statistics from the Climate Service, tel. +358 600 1 0601 (€ 4.06/min + local network fee)
