Kosovo has a continental climate: cold winters with snowfall, hot summers, and pleasant springs and autumns. The mountains — Rugova, Sharr, the Accursed Mountains — get significant snow from November through March and are prime skiing territory in winter (Brezovica is being redeveloped) and excellent hiking territory from May onward.
Spring (April–June) is one of the best times to visit. Temperatures are mild (15–22°C), the mountains are green, wildflowers are out in the highlands, and the cities haven't yet filled up with summer visitors. This is an excellent time for hiking in Rugova Gorge and the surrounding peaks.
Summer (July–August) brings heat — Pristina can push 35°C in July — and the festival season. Dokufest in Prizren runs for ten days in August and transforms the town: outdoor screenings in the old bazaar and fortress, international guests, and a lively street atmosphere. If you want Prizren at its best, go for Dokufest — but book accommodation well in advance. The Sunny Hill Festival in Pristina is a major music festival in late July/early August, drawing big international acts.
Autumn (September–October) is another sweet spot: warm and clear, harvests in the villages, the mountains still accessible, and no festival crowds. A good time for leisurely travel around the country.
Winter (November–March) is cold and often grey. Skiing at Brezovica is the main draw (if the resort is operating — check current status). The cities are quiet and prices are low. Some mountain roads close. Not the most appealing season for a first visit, but Kosovo works in winter for those who don't mind the cold.
The north of Kosovo — particularly Mitrovica and the municipalities of Zvečan, Zubin Potok, and Leposavic — has seen recurring tensions. The UK and other governments advise against non-essential travel to these areas. This situation can change; check current travel advisories before visiting.