yearsofweather

Nagasaki in December:
crisp and chilly, occasional rain

Nagasaki, Japan · Records from 2006 to 2025. Not a forecast.

Mean high13°Hottest day 22.7° (2018)
Mean low6°Coldest night −1° (2010)
Rain days9 days4-16 by year
Rainfall74mmDaylight 10.2 → 10.0 h
Nagasaki's 12 months iBest: May and October
Trip types Sightseeing on foot Fine
Humidity67%0 muggy days
Clear days4 days9 overcast days
Mean wind18 km/h2 windy days
Sunrise / sunset (15th)07:15 / 17:16Daylight 10.2 → 10.0 h

Nagasaki in December

Dusk comes early, so the night view from Mt. Inasa is available in the early evening. Cold wind and grey or rainy days are common, so stay flexible and aim for a clear evening.

A cool month: highs of 13°C, lows of 6°C. Sweaters came out of the suitcase and mostly stayed on. Showers came now and then, about 9 rain days in all, and most of the month stayed dry. The average is 9, but individual years ran from 4 (2011) to 16 (2014).

About 12 nights a month dipped under 5°C, cold enough to want a jacket for the walk back. The lowest night on record was −1°C in 2010.

Typhoons i No tropical storm passed within 300 km in this month over the last 20 years. Typhoons: May and July to October

Date by date i

‹ November December 2026 January ›
Sun
Mon
Tue
Wed
Thu
Fri
Sat
Week
1-5rain on 29% of days15° 8°
6-12rain on 27% of days14° 7°
13-19rain on 24% of days12° 5°
20-26rain on 31% of days13° 6°
27-31rain on 27% of days12° 4°

0-5/206-8/209-11/2012-20/20

1-5rain on 29% of days15° 8°
6-12rain on 27% of days14° 7°
13-19rain on 24% of days12° 5°
20-26rain on 31% of days13° 6°
27-31rain on 27% of days12° 4°
Tap another date to change

20061mm
20075mm
200827mm
2009none
201012mm
2011none
201223mm
2013none
20142mm
20158mm
2016none
2017none
20188mm
2019none
2020none
2021none
202219mm
20231mm
20241mm
202515mm
Holidays in December (2026)
  • December 29 to January 3 Year-end and New Year holidays
  • December 25 Christmas Day

1 Local public holiday or break (busier, pricier)1 US holidays (flights fill up)

Day by day temperature i

2°9°17°24° 1815222931

Mean high Mean low Coldest to warmest high in 20 years

Your trip dates, the past 20 years

Trip dates ~

You can also click two dates on the axis. Hover a cell to see that day's rain.
Trip rain days Month rain days
2006
1 d 8 d
2007
4 d 10 d
2008
3 d 9 d
2009
3 d 10 d
2010
2 d 13 d
2011
2 d 4 d
2012
2 d 9 d
2013
2 d 5 d
2014
4 d 16 d
2015
3 d 10 d
2016
2 d 12 d
2017
2 d 4 d
2018
2 d 9 d
2019
0 d 10 d
2020
0 d 4 d
2021
0 d 4 d
2022
1 d 7 d
2023
3 d 12 d
2024
1 d 8 d
2025
1 d 7 d
Years with rain
Tap a date to start, tap another to end. Each cell is that date in one year.
'06'07'08'09'10'11'12'13'14'15'16'17'18'19'20'21'22'23'24'25
of 20
3
10
6
5
5
5
5
6
5
5
8
4
5
4
4
7
6
4
3
7
12
5
3
7
5
5
4
5
5
8
5
Rain days on trip
14332222432220001311

No rain1-9 mm10 mm or more Dates outside your trip are dimmed.

One row per year, one cell per day. 2011 had 4 rain days, 2014 had 16.

Nagasaki through the year

MonthHighLowRain daysRainfall
January 11°4°8 days58mm
February 12°5°10 days98mm
March 16°8°9 days123mm
April 20°12°9 days143mm
MayGood 24°16°9 days173mm
June 27°20°13 days333mm
July 31°25°11 days292mm
August 32°26°11 days274mm
September 29°22°10 days176mm
OctoberGood 24°17°6 days91mm
November 19°11°8 days98mm
December 13°6°9 days74mm

Common questions

Does it rain a lot in Nagasaki in December?

Over the past 20 years December averaged 9 rain days (1 mm or more) out of 31. Individual years ran from 4 in the driest to 16 in the wettest.

What should I wear in Nagasaki in December?

Days averaged 13°C and nights 6°C. Pack a compact umbrella and a sweater plus a light jacket.

Is December a good time to visit Nagasaki?

On warmth and rain days alone, Nagasaki's easiest months were May and October. December ranked 10 of 12.

How many clear days does Nagasaki get in December?

About 4 clear days (under 30% cloud on average) and 9 overcast days (80% or more).