Punakha sää — huhtikuu

April is the month Bhutan forums name for two things at once: the rhododendrons at their peak - there is a festival for them in Thimphu in mid-April - and spring trekking, when the high peaks are actually visible. Their own refinement is to come early in the month rather than late, because the sky turns hazy towards the end of April as the season moves on, and visibility is most of the point on a Himalayan trek. Expect pleasant days and cool nights at 2,300m. Our own row is wetter than the forum's framing suggests - 27.3 precipitation days carrying 172.4mm - so treat the clear-sky promise as a good-year outcome rather than a guarantee. The rest: 19.7C days, 6.2C nights, 10.8 hours of sun and AQI 66.

Bhutan's forum places May right at the edge of monsoon onset, hazy and cloudy with a real chance of rain most days, but posters were consistent that forecasts tend to overstate it - many days bring only brief showers or overcast skies rather than a genuine downpour, and multiple regulars still called May a pleasant month to visit overall. Temperatures in this range run roughly 8-20C depending on elevation and time of day. Roads connecting Paro, Thimphu and Punakha stay in generally good shape this early in the season, with only the occasional minor landslide in hillier stretches rather than major closures.

Forum posters describe mid-November as generally good Bhutan weather - clear skies, plenty of sun, and daytime conditions comfortable in a light jacket or hoodie with a heavier layer needed once the sun goes down. Posters specifically flag Punakha as running noticeably warmer than higher-elevation stops like Paro or Thimphu, given its much lower valley elevation (around 1,200m versus roughly 3,000m), often 10C or more milder at the same time of year. September through November is generally described by posters as Bhutan's dry, pleasant post-monsoon stretch, though posters also note a lingering shower or two is still possible into November before the fully dry winter pattern sets in, so packing for one isn't unreasonable even on an otherwise sunny-leaning trip.