Tokyo weather in May
Temperature, sea and sunshine in May: long-term averages from 30 years of weather data, not a forecast.
Holiday weather in May
Good
Best time to visit: April – June, September – November
What is the weather like in Tokyo in May?
In May, Tokyo is warm: daytime highs average 22 °C, and nights cool down to about 14 °C. The sea averages 18.1 °C – bracing, so a wetsuit helps for longer swims. Expect around 6 hours of sunshine a day. Rain is frequent, with about 12 rainy days and 134 mm in total. All in all, May is a good month for a holiday in Tokyo.
May compared
How the weather changes from April to June. Tap a month to open it.
More details for May
- Daylight
- 14 h 1 min04:37 – 18:38
- UV index
- 10 · very highclear sky, noon (estimate)All months
- Muggy days
- 2 daysdew point 18 °C or more
- Wind
- 23 km/haverage daily peak
- Cloud cover
- 69 %on average
- Hot days
- 0 days30 °C or more
- Snow days
- 0 days1 cm or more of fresh snow
- Time zone
- UTC+9Asia/Tokyo
How the score comes together
- Temperatureweight 50 %100 %
- Sunshineweight 20 %47 %
- Few rainy daysweight 30 %43 %
Each factor is rated from 0 to 100 % and weighted for the travel style “City break”.
What to pack in May
- Wetsuit for longer swims
- Sunscreen
- Sunglasses & sun hat
- A jumper for the evenings
- Rain jacket or umbrella
Tokyo in May: quick answers
Is Tokyo hot in May?
Warm rather than hot: in May, daytime highs in Tokyo average 22 °C and nights cool to about 14 °C.
Can you swim in Tokyo in May?
Only if you don't mind cold water: in May the sea averages just 18.1 °C. Comfortable swimming is possible from June to October.
Does it rain much in Tokyo in May?
Rain is frequent, with about 12 rainy days and 134 mm in total.
Tokyo month by month
The whole year in TokyoAll destinations: JapanWhere to go in MaySea temperature in May
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0)