Silent Valley in February is the technical sweet spot for the trail experience. Rainfall averages 10-15mm, daytime 19-28C in the valley, nights 16-18C. The 89 sq km national park sits at peak photographic state — Kunthipuzha river crossings at year-firmest, the dense canopy at clearest visibility, the famous "silence" of the valley (a misleading colonial name; the park is rich in cicada-call and bird-call activity, but the absence of cicadas in the moist primary forest gave the early surveys their impression) at year-best ambient quality. Lion-tailed Macaque (Macaca silenus) — Silent Valley's flagship endangered species, population 200-300, one of India's densest concentrations — gives consistent troop-encounters on the 4-hour escorted trail. Other primates: Nilgiri langur, bonnet macaque. Mammals include Tiger, Leopard, Sloth Bear (rare sightings), Indian Giant Squirrel, Nilgiri tahr (in upper reaches). Forest Department permit operations from the Mukkali range office at full tempo — advance permit lead 7-15 days, ₹1,500-2,500 per group, mandatory armed guard escort, 4-hour escorted trail from Mukkali gate to Sairandhri viewpoint via watchtower 1. KFD log-house at Mukkali ₹2,000 with permit-bundle (advance booking essential); Mukkali homestays ₹1,000-2,200; Anaikatti homestays ₹1,200-3,000. Hotel rates 25 percent below January peak.

Why February scores 10.0/10