Summer (June–August)
The best time for most visitors. Days are extraordinarily long — around midsummer, Tallinn gets 19 hours of daylight and it barely gets dark. The weather is warm but rarely oppressive (average highs around 20–22°C in July). Tallinn's Old Town fills with tourists in July and August, but the rest of the country remains uncrowded. Pärnu beach is at its best, festivals are everywhere, and the national parks are easy to explore.
The midsummer festival Jaanipäev (June 23–24) is the biggest celebration in the Estonian calendar — bonfires, dancing, and nights that never fully darken. The Tallinn Song and Dance Celebration (Laulupidu) happens every five years (next in 2027) and is an unforgettable spectacle.
Spring (April–May)
Spring arrives slowly. April can be chilly and grey, but May is lovely — flowers, migratory birds returning to the islands and coast, and far fewer tourists than summer. Good for hiking and birdwatching.
Autumn (September–October)
September is excellent: summer prices drop, the forest turns amber and red, and mushroom picking is a national pastime. Estonians disappear into the woods in September with baskets. The weather stays mild into early October.
Winter (November–March)
Cold, dark, and often beautiful. Tallinn's Christmas market is one of the best in the region. Otepää in southern Estonia becomes the winter sports capital, with cross-country skiing and snowboarding. Expect temperatures around -5°C to -10°C in January, occasionally colder. The old town looks magical in snow.
If you want to see the northern lights, winter nights in northern Estonia can deliver — though it's not guaranteed.