Over the next 10 days Helsinki tops out around 71° (Saturday) and dips to 54° on the coolest night (Friday). About 0.76 in of precipitation is expected in total; the most likely wet day is Thursday (82% chance). Right now Helsinki is running about 2° warmer than Tallinn. Longer view: a high-latitude climate — short, luminous summers and long, dark winters.
Helsinki, Finland · 60.17°N, 24.94°E · Europe/Helsinki · Forecast computed for these exact coordinates