Nagasaki weather in December 2025

Expect daytime maximum temperatures of 12°C in Nagasaki, Japan in December based on long-term weather averages. There are 4 hours of sunshine per day on average with 19 days with some rainfall and typically 71 mm of rainfall in the month.

  • 12°C maximum daytime temperature in December in Nagasaki12
    12°C max day temperature
  • 4 hours of sunshine per day
  • 19 days with some rainfall in December in Nagasaki19
    19 days with some rainfall
  • 4°C minimum night-time temperature in December in Nagasaki4
    4°C min night temperature
  • 10 hours of daylight per day in December in Nagasaki10
    10 hours of daylight per day
  • No heat & humidity in December in Nagasaki0
    No heat & humidity
  • 71 mm monthly rainfall in December in Nagasaki71
    71 mm of monthly rainfall
  • UV (maximum) index 3 (Moderate) in December in Nagasaki3
    3 (Moderate) UV index
  • 19°C sea temperature in December in Nagasaki19
    19°C sea temperature

More about Nagasaki

Nagasaki by month

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Recommended for Japan

Avalon Waterways: Top deals on 2026 river cruises

  • Book early & save on 2026 river cruises with Avalon Waterways
  • Filter deals by promotion, month, destination & more
  • Travel between 1st Jan & 31st Dec 2026 (inclusive)
Go to Avalon Waterways deal >>

Expires at 23:59 on Thursday 31st Dec 2026 · View all Avalon Waterways offers

The December weather guide for Japan (Nagasaki) shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

Metric (°C / mm)  |  Imperial (°F / inches)

Back to top

More about Japan

How warm is it in Nagasaki in December?

Daytime temperatures usually reach 12°C in Nagasaki in December, falling to 3°C at night.

How sunny is it in Nagasaki in December?

There are normally 6 hours of bright sunshine each day in Nagasaki in December - that's 57% of daylight hours.

How warm is the sea around Nagasaki in December?

The average sea temperature around Nagasaki in December is 17°C.

Does it rain in Nagasaki in December?

There are usually 9 days with some rain in Nagasaki in December and the average monthly rainfall is 44mm.

Nagasaki December sunrise & sunset times

Browse the sunrise and sunset times for Nagasaki in December 2025. Select a month to view Nagasaki sunrise and sunset times for the next 12 months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Monday, 1st December 2025 07:05 17:14
Tuesday, 16th December 2025 07:16 17:16
Wednesday, 31st December 2025 07:22 17:24

Related posts

Popular travel offers

Explore holiday destinations

More holidays

Save with latest deals & discounts

More deals

Airport parking

More parking

Airport lounges

More lounges

Top ^