Is Nagasaki hot in May?
Days are typically mild at 23.8°C, while nights average 15.6°C.
Japan · 1991–2020 normal
Typical May weather in Nagasaki: 23.8°C by day, 15.6°C at night, 191 mm of rain over 10.8 wet days. These are measured 1991–2020 station normals, not a forecast.
In the year-round weather comparison, May scores 69 out of 100 (October leads the year at 81). Daylight is calculated as 13 h 49 from latitude 32.75°. Open-water sea temperature is 19.6°C (14 km from the place centre).
May at a glance
Plain answers from the measured climate record—not a forecast or a promise about a particular trip.
Days are typically mild at 23.8°C, while nights average 15.6°C.
The measured monthly average is 191 mm across about 11 wet days.
There are about 13 h 49 between sunrise and sunset at mid-month, calculated from the place latitude.
May ranks 2 of 12 in our weather comparison; October ranks first.
The evidence behind this page
Next step
The weather comparison for Nagasaki is based on climate evidence, not payments from travel companies. Flight, accommodation and activity links will be clearly labelled when they are added; there are no booking offers on this page today.
How travel partnerships will work