Best for May: Vietnam (North and Central), Malaysia (East-coast islands), Indonesia / Bali, Sri Lanka (East coast), Bhutan, Japan and South Korea. Skip if you can: Thailand (Andaman coast), UAE / Dubai and Sri Lanka (West & south coast, hill country).
Ratings come from national met services and tourism boards; the split between best and okay is editorial guidance. Figures are monthly averages (high/low °C, rain), not a forecast. Updated 17 October 2026.
North (Hanoi, Ha Long Bay)Hanoi: 31°/25°C, 220 mm rainVietnam Tourism: best Hanoi Apr-Jun or Sep-Dec; Ha Long Apr-Jun or Sep-Nov; storms can cancel cruises.
Central (Da Nang, Hoi An, Hue)Da Nang: 32°/26°C, 109 mm rainVietnam Tourism: Hoi An rainy Sep-Jan, tropical storms from Sep, small floods Sep-Nov.
East-coast islands (Perhentian, Redang, Tioman)No climate figures in our dataMetMalaysia: NE monsoon (Nov-Mar) brings heavy rain, floods and rough seas to the east coast; Nov-Jan wettest, Jun-Jul driest.
BaliBali (Denpasar): 28°/25°C, 115 mm rainBali Provincial Govt: dry season generally Apr-Oct, rainy season Oct-Apr, with Oct and Apr as transition months.
East coast (Trincomalee, Arugam Bay)Trincomalee: 33°/27°C, 85 mm rainMet Dept: the NE monsoon (Dec-Feb) rains on the north and east; Tourism SL says the east coast is at its finest May-Sep.
Indian May-June holidays suit the east coast and the Cultural Triangle, not the west-coast beaches.
Bhutan
Paro, Thimphu, PunakhaParo: 20°/11°C, rain not shown (model data unreliable here)Bhutan DoT: monsoon late Jun/Jul to late Sep; Jun-Sep monsoons can disrupt transport (floods, landslides); autumn sunny, festive; winter crisp and clear.
Tokyo, Osaka/KyotoTokyo: 24°/15°C, 140 mm rainJNTO: tsuyu runs through June (Hokkaido largely spared); most typhoons form Jul-Oct; Golden Week, Obon (mid-Aug) and New Year are domestic peaks with crowds and full transport.
Seoul, Busan, JejuSeoul: 24°/14°C, 105 mm rainKTO: spring and fall are best for walking; rainy season late Jun-late Jul; Jun-Oct is typhoon season; winter averages 0-1 C.
Maldives: Male & central atollsMale: 29°/27°C, 251 mm rain. Best: Jan-Mar (dry NE monsoon, 10-11 h sunshine).
Nepal: Kathmandu, PokharaKathmandu: 25°/17°C, rain not shown (model data unreliable here). Best: Mar-Apr, Oct-Nov.
Avoid if you can in May
Thailand: Andaman coast (Phuket, Krabi)May-Oct (SW monsoon; 248-340 mm/month in our data). Best instead: Dec-Mar.
UAE / Dubai: Dubai & Abu DhabiMay-Sep (avg highs 38-42 C in our data). Best instead: Nov-Mar.
Sri Lanka: West & south coast, hill country (Colombo, Galle, Kandy)May, Oct-Nov (Colombo 359-400 mm in our data). Best instead: Dec-Mar.
Weather data by Open-Meteo.com, licensed CC BY 4.0. Climate averages are 2016–2025 ERA5 / ERA5-Land reanalysis (Copernicus Climate Change Service, ECMWF), processed by India Outbound Travel News. These are not official WMO normals; where a met service publishes station figures, the charts use them instead, as labelled.