✓ Best most reliable weather · ~ Okay visitable, with trade-offs · ✕ Avoid monsoon, storms, heat or disruption (often cheaper). The split between best and okay is editorial guidance based on the met-service and tourism-board sources below.
Region by region
Tokyo, Osaka/KyotoBest: Late Mar-May (cherry blossom late Mar-early Apr), Oct-Nov (autumn leaves late Nov). Okay: Dec-Feb (cold, highs ~9-12 C), Jul-Sep (hot, typhoons). Avoid: Jun (tsuyu rainy season); also Golden Week (late Apr-early May) for crowds.JNTO: 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.
Tokyo first bloom averages 24 Mar and Osaka 27 Mar (JNTO / Japan Weather Association).
Peak periods
Diwali 8 NovDiwali (8 Nov 2026)Short-haul international fares spike; Dubai and Singapore routes 'commanding premium fares' and outbound sales to Dubai, Bali, Bangkok, Singapore, Vietnam up 30-40% vs Diwali 2024 (Moneycontrol, Oct 2025, quoting OTAs)
School holsIndian school holidays (mid-May to June)Family travel peak from India. Clashes with SW monsoon in Sri Lanka west coast, Maldives, Andaman coast of Thailand, Nepal, Bhutan; and with heat in UAE. Good fit for Bali, east-coast Sri Lanka, Singapore, Vietnam's central coast.
Xmas–NYChristmas–New Year(Editorial estimate) Global peak; overlaps Dubai Shopping Festival and Japan's New Year closures.
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.
Japan received an estimated 27,600 visitors from India in September 2026, up 8.7% on a year earlier. From January to September, Indian arrivals rose 19% to about 277,700, while Japan's total arrivals fell 2.9%.
Air India will fly Delhi–Osaka (Kansai) non-stop four times a week from 2 February 2027 on Boeing 787-8s, its second Japan destination after Tokyo Haneda.
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