Average temperature in Helsinki throughout the month of June is 12. With the average high being 19 and lows around 9. See our table below for a full breakdown:
Helsinki, Finland Weather in June FAQs
What weather can I expect?
You can expect that it will be 12 celsius but it does vary throughout the day
How hot is it throughout the summer months?
Summer temperatures on average are about 20 degrees celsius
What’s the difference in Summer weather to Winter?
Usually you can expect about a 7 celsius