Planning for the weather is a good way to make your trip to Teuri Island relaxing and enjoyable, especially when you're splurging. The hottest months are usually August and July, with an average temperature of 18°C, while the coldest months are January and February, with an average of -1°C. The snowiest months in Teuri Island are January, March, February and December, with each month seeing an average of 60 cm of snowfall.