Picture a spring morning in the western valleys. The shade is still cold, the sun is already warm on the stone, a farmer is ploughing a terrace, and somewhere on the slopes above the road there is supposed to be a hillside of red rhododendrons.
“Supposed to be” is the trouble. Many spring guides print a bloom window, and we could not trace an official source for the ones we checked. So we would rather show you what is actually written down: festival dates, monthly arrival figures and the national weather service’s notes on the season. The flowers, we admit up front, keep their own calendar.
| At a glance | Detail | Source |
|---|---|---|
| Spring in the climate record | March to May, the pre-monsoon season: temperatures rise significantly and rainfall gradually increases | NCHM Climate Atlas |
| Visitors from outside India | 11,429 in March 2026, 10,188 in April and 7,650 in May, against 2,611 in July and 3,660 in August | Department of Tourism bulletins |
| Paro Tshechu | 29 March–2 April 2026 and 18–22 March 2027 (both tentative) | 2027 list, compared with 2026 in our 2027 festival guide |
| Rhododendron events | Sheytemi week 3–9 April in 2026 and (tentatively) 2027; Lamperi festival 13–14 April 2026, 22–23 April 2027 | Events calendar, 2027 list |
| Bloom timing | No official bloom calendar found; BBS reported sparse blossom at Lamperi in April 2025 | BBS |
| Haze and views | Often softer from late April into May; no official visibility record found | Bhutan Luxury Travel, 2026 |
| Checked | 30 September 2026 |
Is spring a good time to visit Bhutan?
Yes, if you want festivals, flowers and warming days, and can live with a busier calendar and some softness on the mountain views. The national weather service, NCHM, counts March to May as spring, also called the pre-monsoon season, and its climate atlas says temperatures start to rise significantly while rainfall climbs gradually towards the monsoon. Expect cold mornings, warm middays and, by May, a sky that is still making up its mind.
What spring gives you is a crowd of things to do. The Paro Tshechu, the valley’s great festival of sacred masked dances, lands in late March one year and mid-March the next, April fills with rhododendron events, and Haa holds its spring festival. What it costs you is certainty. Bhutan in April is lovely, lively and not guaranteed, and if you know that going in, it is hard to be let down. Our guide to when to visit Bhutan sets spring beside the other seasons.
When do the rhododendrons bloom?
Nobody can tell you for certain, and we will not pretend to. We found no official bloom calendar. The Department of Tourism’s events calendar lists festivals, not flowers, and the climate atlas covers temperature and rain. Bhutan has dozens of rhododendron species, from low cushion shrubs on high ridges to full trees, and they open at different heights and times, generally the lower slopes first and the higher ridges later, as our guide to a naturalist’s Bhutan explains. Add each year’s weather and you have a moving target.
The festivals show how moving. BBS reported in April 2025 that visitors to the Lamperi Rhododendron Festival saw visibly fewer blooms than in earlier years. Observers blamed several factors, including climate change, which BBS noted no study yet supports, and a park official pointed to two years with little snowfall and erratic rain. The same report said the festival had once run on the 22nd–24th before moving to the 13th–14th after consultation, and that organisers planned a second run the following week as a feasibility study for rescheduling it.
So we treat festival dates as event dates, not bloom dates. We build routes that climb from valley to pass, so some slope is likely to be in flower, and we say plainly that a hillside may be bare.
Which festivals are on in spring?
The Paro Tshechu leads, then April fills with rhododendron events and Haa’s spring festival. These dates come from Department of Tourism lists and all are tentative:
- Paro Tshechu: 29 March–2 April in 2026, and 18–22 March in 2027. Tshechus follow the lunar calendar, so the 2027 date lands about eleven days earlier.
- Rhododendron Week, Sheytemi (Merak): 3–9 April in both years, a fixed date rather than a lunar one.
- Haa Spring Festival: 7–9 April 2026, according to the events calendar.
- Lamperi Rhododendron Festival: 13–14 April 2026, 22–23 April 2027.
- Bumthang: Domkhar Tshechu 26–28 April 2026 and 16–18 April 2027; Ura Yakchoe 28 April–2 May 2026 and 18–22 April 2027.
Our guide to Bhutan’s festivals helps you choose between the big ones, Bhutan’s smaller festivals covers the rest of the calendar, and Bhutan's festival dates for 2027 has the full list.
How busy is Bhutan in March and April?
Busy by Bhutan’s standards. The Department of Tourism’s monthly bulletins counted 11,429 arrivals from countries other than India in March 2026 and 10,188 in April. For comparison, October and November 2025 saw 13,229 and 12,973, while July 2026 saw 2,611 and August 3,660. Spring brings roughly four times July’s visitors from beyond India. American visitors led in both months (1,794 in March, 1,682 in April).
One caution: that group also holds regional visitors, such as 568 Bangladeshi visitors in April, so it is not all long-haul travellers.
May is a different crowd. Arrivals reached 47,343, of whom 39,693, more than eight in ten, were Indian, while other countries fell to 7,650. That fits what we see at the lodges: April sits close behind October and November, and the Paro Tshechu weeks fill first. Our guide to Bhutan’s crowds in 2026 shows how to keep the famous sites quiet even then.
What is the weather really like?
Changeable, and more so as May approaches. NCHM’s atlas says rainfall rises gradually from March to May and that elevation shapes temperature strongly: warmer in the southern valleys, cold over the high Himalaya. In practice a valley floor can feel warm at noon while the pass above is still cold.
Storms belong to the picture too. In a 2019 report, BBS explained that NCHM forecasters see moisture from the south-west meeting colder air in these months, producing gusty wind, thunderstorms and hail, and that irregular weather is normally expected before the monsoon. It is not a warning so much as a packing list.
Our advice is to pack layers and a light rain shell, put high viewpoints and walks in the morning, and keep temples and long lunches for the afternoon. Nothing about this ruins a trip. It simply rewards flexibility.
A farmer ploughing a spring terrace with a pair of oxen, blossom trees at the field’s edge.
Is it hazy in April and May?
Often, from late April into May, and we found no official visibility record, so this is what our team sees rather than a statistic. High peaks that were crisp in winter can fade to a pale outline behind dust and haze, and afternoon cloud adds to it. Early morning gives the best odds, which is one more reason to start early.
So set expectations kindly. Come for the colour, the terraces being worked and the festivals, and treat any snow peak as a bonus. If one mountain view is the whole point of your trip, autumn and winter are safer, although no season can promise a clear sky on a particular morning. Our guide to Bhutan in winter shows what those clear months are like, and why they come with cold nights.
March, April or May: which month suits you?
Choose March for the big festival, April for the flower events and village festivals, and May for a quieter crowd from beyond India.
March carries the Paro Tshechu in 2027 on the tentative list, and the most visitors from beyond India of the three months in 2026. April brings the rhododendron events, Haa’s festival and, in 2027, Bumthang’s two festivals in the second half of the month. May is the quietest for visitors from outside India (7,650), with more rain by the atlas and a greater chance of haze.
If you are drawn to the western circuit, The Soul of Western Bhutan crosses the Dochula pass between Thimphu and Punakha and lists February to May among its best times. We can time it around the Paro Tshechu, or keep a few days loose so you can chase whatever is flowering.
Frequently asked questions
When do rhododendrons bloom in Bhutan?
It depends on species, altitude and the year, and no official calendar exists. Lower slopes tend to open first and higher ridges follow, so a route that climbs gives you the most chances.
Is Bhutan hot in April?
It depends on where you are. NCHM’s atlas shows the southern valleys far warmer than the high Himalaya, and in the western valleys we take guests to, we find warm middays and cool mornings. Bring layers and sun protection.
Are the mountain views clear in spring?
Best at dawn, before cloud and haze build. We schedule view stops early and save temples for the afternoon.
Do I need to book early for April?
Yes. April sits close behind October and November for lodge demand, and the Paro Tshechu weeks fill first. Ask us about your dates.
Spring in Bhutan promises colour rather than a schedule. Come curious, pack a warm layer for dawn, and let the hillside surprise you.