Olkiluoto Nuclear Power Plant
Eurajoki, Finland
The Olkiluoto Nuclear Power Plant is a nuclear power facility located in Eurajoki, Finland, and is operated by Teollisuuden Voima. This site has been in operation since 1973 and is one of the most looked-up sights in Finland. The facility serves as a significant landmark in the region and provides insight into the country's energy infrastructure.
Planning a visit
Visitors planning a trip to the area should consider the local climate. Temperatures are coldest in February at -4 °C and reach their warmest in July and August, both averaging 16 °C. Rain occurs throughout the year. The most frequent rainfall happens in January, November, and December, with about 14 days of rain per month. Drier conditions are more common in May and June, which see about 7 days of rain each. The site is open to the public daily between 10:00 and 20:00. Traveling to the power plant is accessible via Pori Airport, which is the nearest airport at a distance of 31 km. For international connections, Turku Airport is located 92 km away. The facility is 224 km from Helsinki. Those visiting the area can also see nearby sites such as Old Rauma, situated 12.6 km away, or the historic site of Sammallahdenmäki, which is located 22.2 km from the power plant.
Weather by month
The warmest month is July, averaging 16 °C. Rain is spread fairly evenly through the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Average temperature, °C | -2 | -4 | -2 | 3 | 7 | 12 | 16 | 16 | 12 | 7 | 3 | 0 |
| Rainfall, mm | 50 | 34 | 35 | 32 | 36 | 55 | 65 | 77 | 60 | 77 | 66 | 58 |
| Rainy days | 15 | 10 | 9 | 9 | 7 | 7 | 12 | 13 | 11 | 13 | 14 | 15 |
Temperatures and rainfall: 1981–2010 averages for this spot (4 km grid), from CHELSA. Rainy days: 2015–2024, NASA POWER.
