Weather in Tokyo during May

May mornings in Tokyo arrive cool and damp, around 15°C (59°F), but by midday the thermometer climbs to 23°C (73°F)—warm enough for short sleeves, not quite hot. You'll see roughly 136mm of rainfall spread across 12 rainy days, mostly as brief afternoon showers rather than all-day downpours. Sunshine averages 8.9 hours daily, so you get genuine blue-sky afternoons between the wet spells. The air feels fresh after rain, with occasional evening breezes that make walking around the city genuinely pleasant.

Late spring in Tokyo brings cherry blossom season to a close and ushers in the green season—azaleas bloom in gardens, and the city's parks fill with families on weekends. It's busy but not yet peak summer tourist season, so major temples and museums have lines but they move. Restaurants spill outdoors, izakayas set up street seating, and locals are visibly happier. Prices on accommodation and flights are moderate; you're past the cherry blossom premium but not yet in the summer surge.

Over the past decade, May temperatures in Tokyo have remained remarkably stable, hovering within 0.5°C of the current average. Rainfall patterns show slight year-to-year variation, but 12 rainy days is typical. Climate data suggests 2026 will track closely to the historical norm—no unusual heat waves or dry spells expected.

May suits photographers after softer spring light, families comfortable with warm-but-not-hot days and manageable crowds, and anyone wanting to experience Tokyo's outdoor culture without summer's intensity. Pack layers and a compact umbrella; plan indoor activities (museums, shopping arcades) for rainy afternoons, and reserve gardens and rooftop bars for the sunny stretches.