yearsofweather

Nagasaki in May:
comfortably warm, occasional rain

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

Mean high24°Hottest day 28.5° (2013)
Mean low16°Coldest night 10° (2013)
Rain days9 days4-17 by year
Rainfall173mmDaylight 13.5 → 14.1 h
Nagasaki's 12 months iBest: May and October
Trip types Sightseeing on foot Goodmild
Humidity80%1 muggy day
Clear days6 days13 overcast days
Mean wind13 km/hRarely windy
Sunrise / sunset (15th)05:22 / 19:11Daylight 13.5 → 14.1 h

Nagasaki in May

Things relax once Golden Week ends. With the rainy season close, skies can darken without warning. A cool sea breeze makes this a pleasant time for harbour walks. A folding umbrella is easier to handle on the hills.

Afternoons reached 24°C and nights settled at 16°C, warm enough to linger over lunch outdoors. Showers came now and then, about 9 rain days in all, and most of the month stayed dry. Averages hide a lot here: one year saw 4, another 17.

Rain days averaged 20 mm each, so when it rained it rained properly.

Typhoons i

1 of the last 20 years had a tropical storm pass within 300 km this month.

  • Songda (2011), 280 km away tropical storm
1 2 3 4 15 6 67 138 139 510 11 12

Date by date i

‹ April May 2027 June ›
Sun
Mon
Tue
Wed
Thu
Fri
Sat
Week
May 1rain on 35% of days22° 15°
2-8rain on 25% of days23° 15°
9-15rain on 32% of days23° 16°
16-22rain on 27% of days24° 17°
23-29rain on 31% of days25° 17°
30-31rain on 23% of days25° 18°

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

May 1rain on 35% of days22° 15°
2-8rain on 25% of days23° 15°
9-15rain on 32% of days23° 16°
16-22rain on 27% of days24° 17°
23-29rain on 31% of days25° 17°
30-31rain on 23% of days25° 18°
Tap another date to change

200641mm
20076mm
2008none
2009none
20105mm
2011none
2012none
2013none
2014none
20151mm
201650mm
2017none
201823mm
2019none
2020none
2021none
20222mm
202371mm
202413mm
20258mm
Holidays in May (2027)
  • April 29 to May 5 Golden Week
  • May 3 Constitution Memorial Day
  • May 4 Greenery Day
  • May 5 Children's Day
  • May 31 Memorial Day

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

Day by day temperature i

13°19°24°30° 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
2 d 13 d
2007
3 d 9 d
2008
1 d 9 d
2009
1 d 4 d
2010
1 d 7 d
2011
1 d 13 d
2012
1 d 6 d
2013
0 d 4 d
2014
0 d 5 d
2015
3 d 10 d
2016
3 d 12 d
2017
0 d 4 d
2018
4 d 11 d
2019
0 d 7 d
2020
2 d 9 d
2021
3 d 17 d
2022
1 d 8 d
2023
4 d 9 d
2024
2 d 9 d
2025
3 d 11 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
7
3
3
5
7
10
5
2
8
9
3
8
7
5
5
7
4
9
7
3
5
3
6
6
5
8
6
8
4
5
4
Rain days on trip
23111110033040231423

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

One row per year, one cell per day. 2009 had 4 rain days, 2021 had 17.

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 May?

Over the past 20 years May averaged 9 rain days (1 mm or more) out of 31. Individual years ran from 4 in the driest to 17 in the wettest.

What should I wear in Nagasaki in May?

Days averaged 24°C and nights 16°C. Pack a compact umbrella, a light layer for the evenings, and T-shirts.

Is May a good time to visit Nagasaki?

On warmth and rain days alone, Nagasaki's easiest months were May and October. May ranked 2 of 12, close to the top.

Is Nagasaki humid in May?

Mean relative humidity was 80%, with about 1 muggy day (dew point of 20°C or more) in the month.