Kathmandu

Here's the thing about Kathmandu: everyone talks about how spiritual and magical it is, but nobody warns you that June through August turns the entire valley into a steam room with horizontal rain. The locals literally call it barsat — the rain — and they're not exaggerating. If you're planning 2026, your sweet spot is February through April or November. These months aren't just "good weather" — they're when the city actually breathes, the mountains appear (instead of hiding behind clouds), and you can walk the narrow alleys of Thamel without slipping on wet stones every five seconds.

February and March are the shoulder months where everything feels possible. You're looking at highs around 19–21°C (66–70°F) — cool enough in the morning that you'll want a light jacket, warm enough by noon that you'll ditch it. The light is crystalline; photographers lose their minds here. March especially brings rhododendrons blooming in the surrounding hills, and if you time it right, you'll catch Holi (the festival of colors) when the whole city erupts in colored powder and celebration. April stays warm (highs reach 26°C / 79°F) but the air gets hazier — pollution picks up before the monsoon clears it out. November is the opposite rhythm: crisp mornings (around 10°C / 50°F), brilliant afternoons (22°C / 72°F), and that perfect light returns. Fewer tourists than spring, but the crowds are still manageable.

June, July, and August? Avoid like you're dodging a monsoon (which you literally are). Rainfall hits 2,890mm annually, and most of it dumps between June and August — we're talking sudden downpours that flood the streets, landslides that close mountain roads, and a humidity that makes moving feel like swimming through warm soup. Highs are only around 26–27°C (79–81°F), but it feels 10 degrees hotter because of the moisture. Businesses close early, flights get delayed constantly, and the valley just feels shut down. September and October are technically drier, but the clouds linger and everything's still damp.

Looking at 2026 specifically: the patterns are holding steady with what we've seen the past decade. Kathmandu's climate isn't dramatically shifting like some places, but the monsoon does seem to creep in slightly earlier some years. The dry season windows (Feb–Apr and Nov) remain your most reliable bet. If you're flexible, November 2026 might actually edge out spring — fewer tourists discovering the place, and the post-monsoon freshness makes the temples and stupas feel newly cleaned.