Direct answer
The best time to visit Uttarakhand depends on what you want: for hill stations, sightseeing and trekking: March–June and September–November; for winter snow and skiing: December–February; for pilgrimages (Char Dham): May–October (summer opens high-altitude routes).
Details by season
Spring (March–May)
Monsoon (June–August)
Autumn (September–November)
Winter (December–February)
By activity
Practical tips
Quick recommendation