Nepal · Climate data from DHM Nepal
Kathmandu dresses for a 16°C–30°C / 61°F–86°F window across the months we cover. Kathmandu runs Himalayan-foothill at 1,400m / 4,600ft elevation — UV index sharper than equivalent latitudes due to thinner atmosphere. May-August spans pre-monsoon dry through peak monsoon (mid-June onset). The dressing register is Nepali heritage layered: lightweight cotton for afternoons, mid-weight cardigan for cool mornings, modest cuts (shoulders covered at temples — Pashupatinath Hindu, Boudhanath Buddhist stupa, Swayambhunath 'Monkey Temple', Patan and Bhaktapur Durbar Squares). Nepali heritage register: Mahaguthi (Kathmandu fair-trade since 1984, the most-cited Nepali fair-trade heritage — handwoven cotton, Dhaka cloth, woolen blankets); Pasang Dolma Sherpa Textiles (Sherpa-heritage handwoven, Patan); Jamarko (Nepali handicrafts); Sherpa Adventure Gear (Nepali outdoor brand). Heritage textiles: Dhaka cloth (handwoven cotton with geometric patterns, used for Dhaka topi hat and shawls); pashmina from changthangi mountain goat. High-altitude trekking pauses June-September for landslide safety; resumes mid-September.
Across the 4 months we cover: morning lows from 16°C / 61°F (May) to afternoon highs of 30°C / 86°F (June).
What to wear in Kathmandu in May 2026: DHM Nepal data (29°C / 84°F afternoons, 16°C / 61°F nights), Himalayan late spring, pre-monsoon, and the Nepali heritage uniform.
What to wear in Kathmandu in June 2026: DHM Nepal data (30°C / 86°F afternoons, 19°C / 66°F nights), monsoon onset, and the Nepali heritage uniform.
What to wear in Kathmandu in July 2026: DHM Nepal data (27°C / 81°F afternoons, 20°C / 68°F nights), peak monsoon, and the Nepali heritage uniform.
What to wear in Kathmandu in August 2026: DHM Nepal data (27°C / 81°F afternoons, 20°C / 68°F nights), peak monsoon continues, festivals, and the Nepali heritage uniform.
The neighborhood you sleep in affects what reads as appropriate more than the calendar does. Kathmandu's style scene anchors on the districts below — each leaf page calls out the local register (smart-casual, undone, technical, party) so the capsule maps to the streets you'll actually walk on.
Every leaf page on this hub is built from four data layers: climate normals from DHM Nepal; named-authority etiquette and style references (Vogue, Condé Nast Traveler, Business of Fashion, the relevant local press); resident write-ups and traveler-forum reports for the failure modes tourists get wrong; and the editorial avatar pool that visualises each capsule on a person rather than a moodboard. Every DO names a reason. Every DON'T names a failure mode. We retest before each seasonal refresh — the editorial-modified date at the bottom of each leaf is the receipt.
Climate numbers come from DHM Nepal — the national meteorological service for Nepal. Daily highs and lows, rain days, and daylight hours are 1991-2020 normals (the international standard, refreshed every decade). Capsule pieces and what-to-avoid notes are stress-tested against Kathmandu resident write-ups, named-stylist sources where the city has a documented uniform (Vogue Paris under Emmanuelle Alt for Paris, Vogue Japan and i-D Tokyo coverage for Tokyo, NYMag's The Cut for New York), and the failure modes locals actually flag in city forums and traveler reports.
Because the morning-low to afternoon-high swing inside one Kathmandu month already changes the silhouette — and the swing between months is much bigger than that. May mornings start at 16°C / 61°F; June afternoons hit 30°C / 86°F. A single packing list that tries to span both ends up wrong at both. Each month here is a different capsule, calibrated to the climate band that actually shows up on the ground.
4 so far: May, June, July, August. We ship climate-and-event-distinct months only — adjacent months that share more than 60% of the same capsule pieces don't get separate pages, because near-identical leaves erode the credibility of every other page on the site. The full coverage plan is in our internal CLAUDE.md (the editorial brief governs every page that ships).
DHM Nepal 1991-2020 normals are the version cited on every leaf — the international meteorological standard, updated by every national service every decade. We restate the numbers as raw averages on the leaf pages ("30°C / 86°F afternoons") rather than the year range, so the figures don't read as stale. The next normals refresh covers 2001-2030 and lands in 2031 — we'll bump every page when it does.
Editorial rule, enforced in CI: every DO line names a specific reason ("merino sinks under a trench so a damp morning doesn't show through your knit"); every DON'T names a specific failure mode ("suede stains the first time light drizzle catches it"). We ban "timeless," "elevate your style," "must-have," and "effortless" — they're the giveaway phrases of generic AI fashion writing. If a sentence could open any city's guide, it gets cut. Kathmandu's guide reads like Kathmandu, not like a packing-list aggregator.