January 11° · ☂ 8 February 12° · ☂ 10 March 16° · ☂ 9 April 20° · ☂ 9 ★ May24° · ☂ 9 June 27° · ☂ 13 July 31° · ☂ 11 August 32° · ☂ 11 September 29° · ☂ 10 ★ October24° · ☂ 6 November 19° · ☂ 8 December 13° · ☂ 9 Nagasaki in August:very hot, Nagasaki, Japan · Records from 2006 to 2025. Not a forecast.
Mean high 32° Hottest day 36.3° (2018)
Mean low 26° Coldest night 20.2° (2019)
Rain days 11 days 2-19 by year
Rainfall 274mm Daylight 13.8 → 12.9 h
Nagasaki's 12 months i Best: May and October
1 2 3 4 5 6 7 8 9 10 11 12
Trip types Sightseeing on foot Poorhot, muggy and storm risk
Humidity 83% 31 muggy days
Clear days 8 days 10 overcast days
Mean wind 12 km/h 1 windy day
Sunrise / sunset (15th) 05:44 / 19:07 Daylight 13.8 → 12.9 h
Nagasaki in August On August 9 at 11:02 a.m. the Peace Park holds the memorial ceremony and observes a moment of silence. On the evening of August 15 the Shoro Nagashi spirit boats pass through the streets. These are solemn observances rather than festivals, so watch quietly, and bring ear protection for the firecrackers.
It was a hot month: 32°C by day and 26°C after dark. About 11 days a month saw rain, enough that a wet-weather plan was worth having. Averages hide a lot here: one year saw 2, another 19.
Highs topped 30°C on 27 days of the month on average. Mixing in indoor stops at midday made sense. Each rainy day brought about 26 mm, closer to downpours than drizzle.
Typhoons i 13 of the last 20 years had a tropical storm pass within 300 km this month.
Shanshan (2024), 40 km away typhoon strength Goni (2015), 49 km away typhoon strength Wukong (2006), 58 km away tropical storm 1 2 3 4 1 5 6 6 7 13 8 13 9 5 10 11 12
Date by date i Sun
Mon
Tue
Wed
Thu
Fri
Sat
Week
August 1 Sunday 1 rain in 3 of 20 yrs 3/20 32° 26° August 2 Monday 2 rain in 2 of 20 yrs 2/20 32° 26° August 3 Tuesday 3 rain in 2 of 20 yrs 2/20 32° 26° August 4 Wednesday 4 rain in 4 of 20 yrs 4/20 33° 26° August 5 Thursday 5 rain in 5 of 20 yrs 5/20 33° 26° August 6 Friday 6 rain in 4 of 20 yrs 4/20 33° 26° August 7 Saturday 7 rain in 5 of 20 yrs 5/20 33° 26° 1-7 rain on 18% of days 33° 26°
August 8 Sunday 8 rain in 7 of 20 yrs 7/20 33° 26° August 9 Monday 9 rain in 8 of 20 yrs 8/20 32° 26° August 10 Tuesday 10 rain in 5 of 20 yrs 5/20 32° 26° August 11 Wednesday 11 rain in 5 of 20 yrs 5/20 32° 26° August 12 Thursday 12 rain in 8 of 20 yrs 8/20 32° 26° August 13 Friday 13 rain in 7 of 20 yrs 7/20 32° 26° August 14 Saturday 14 rain in 8 of 20 yrs 8/20 32° 26° 8-14 rain on 34% of days 32° 26°
August 15 Sunday 15 rain in 8 of 20 yrs 8/20 32° 26° August 16 Monday 16 rain in 9 of 20 yrs 9/20 32° 26° August 17 Tuesday 17 rain in 11 of 20 yrs 11/20 32° 26° August 18 Wednesday 18 rain in 9 of 20 yrs 9/20 32° 25° August 19 Thursday 19 rain in 8 of 20 yrs 8/20 32° 25° August 20 Friday 20 rain in 8 of 20 yrs 8/20 32° 25° August 21 Saturday 21 rain in 7 of 20 yrs 7/20 32° 26° 15-21 rain on 43% of days 32° 26°
August 22 Sunday 22 rain in 7 of 20 yrs 7/20 32° 26° August 23 Monday 23 rain in 9 of 20 yrs 9/20 32° 26° August 24 Tuesday 24 rain in 12 of 20 yrs 12/20 32° 25° August 25 Wednesday 25 rain in 11 of 20 yrs 11/20 32° 25° August 26 Thursday 26 rain in 5 of 20 yrs 5/20 32° 25° August 27 Friday 27 rain in 5 of 20 yrs 5/20 32° 25° August 28 Saturday 28 rain in 6 of 20 yrs 6/20 31° 25° 22-28 rain on 39% of days 32° 25°
August 29 Sunday 29 rain in 6 of 20 yrs 6/20 31° 25° August 30 Monday 30 rain in 10 of 20 yrs 10/20 31° 25° August 31 Tuesday 31 rain in 8 of 20 yrs 8/20 31° 24°
29-31 rain on 40% of days 31° 25°
1-7 rain on 18% of days 33° 26° 8-14 rain on 34% of days 32° 26° 15-21 rain on 43% of days 32° 26° 22-28 rain on 39% of days 32° 25° 29-31 rain on 40% of days 31° 25°
Sun
Mon
Tue
Wed
Thu
Fri
Sat
Week
August 1 Tuesday 1 rain in 3 of 20 yrs 3/20 32° 26° August 2 Wednesday 2 rain in 2 of 20 yrs 2/20 32° 26° August 3 Thursday 3 rain in 2 of 20 yrs 2/20 32° 26° August 4 Friday 4 rain in 4 of 20 yrs 4/20 33° 26° August 5 Saturday 5 rain in 5 of 20 yrs 5/20 33° 26° 1-5 rain on 16% of days 32° 26°
August 6 Sunday 6 rain in 4 of 20 yrs 4/20 33° 26° August 7 Monday 7 rain in 5 of 20 yrs 5/20 33° 26° August 8 Tuesday 8 rain in 7 of 20 yrs 7/20 33° 26° August 9 Wednesday 9 rain in 8 of 20 yrs 8/20 32° 26° August 10 Thursday 10 rain in 5 of 20 yrs 5/20 32° 26° August 11 Friday 11 rain in 5 of 20 yrs 5/20 32° 26° August 12 Saturday 12 rain in 8 of 20 yrs 8/20 32° 26° 6-12 rain on 30% of days 32° 26°
August 13 Sunday 13 rain in 7 of 20 yrs 7/20 32° 26° August 14 Monday 14 rain in 8 of 20 yrs 8/20 32° 26° August 15 Tuesday 15 rain in 8 of 20 yrs 8/20 32° 26° August 16 Wednesday 16 rain in 9 of 20 yrs 9/20 32° 26° August 17 Thursday 17 rain in 11 of 20 yrs 11/20 32° 26° August 18 Friday 18 rain in 9 of 20 yrs 9/20 32° 25° August 19 Saturday 19 rain in 8 of 20 yrs 8/20 32° 25° 13-19 rain on 43% of days 32° 26°
August 20 Sunday 20 rain in 8 of 20 yrs 8/20 32° 25° August 21 Monday 21 rain in 7 of 20 yrs 7/20 32° 26° August 22 Tuesday 22 rain in 7 of 20 yrs 7/20 32° 26° August 23 Wednesday 23 rain in 9 of 20 yrs 9/20 32° 26° August 24 Thursday 24 rain in 12 of 20 yrs 12/20 32° 25° August 25 Friday 25 rain in 11 of 20 yrs 11/20 32° 25° August 26 Saturday 26 rain in 5 of 20 yrs 5/20 32° 25° 20-26 rain on 42% of days 32° 25°
August 27 Sunday 27 rain in 5 of 20 yrs 5/20 32° 25° August 28 Monday 28 rain in 6 of 20 yrs 6/20 31° 25° August 29 Tuesday 29 rain in 6 of 20 yrs 6/20 31° 25° August 30 Wednesday 30 rain in 10 of 20 yrs 10/20 31° 25° August 31 Thursday 31 rain in 8 of 20 yrs 8/20 31° 24°
27-31 rain on 35% of days 31° 25°
1-5 rain on 16% of days 32° 26° 6-12 rain on 30% of days 32° 26° 13-19 rain on 43% of days 32° 26° 20-26 rain on 42% of days 32° 25° 27-31 rain on 35% of days 31° 25°
Tap another date to change
2006 2mm
2007 none
2008 none
2009 none
2010 none
2011 8mm
2012 none
2013 16mm
2014 16mm
2015 32mm
2016 none
2017 1mm
2018 3mm
2019 17mm
2020 none
2021 16mm
2022 4mm
2023 23mm
2024 1mm
2025 none
Holidays in August (2027) August 11 Mountain DayAugust 13 to August 16 Obon 1 Local public holiday or break (busier, pricier)
Holidays in August (2028)
Your trip dates, the past 20 years Trip dates August 1 (Sun) 2 (Mon) 3 (Tue) 4 (Wed) 5 (Thu) 6 (Fri) 7 (Sat) 8 (Sun) 9 (Mon) 10 (Tue) 11 (Wed) 12 (Thu) 13 (Fri) 14 (Sat) 15 (Sun) 16 (Mon) 17 (Tue) 18 (Wed) 19 (Thu) 20 (Fri) 21 (Sat) 22 (Sun) 23 (Mon) 24 (Tue) 25 (Wed) 26 (Thu) 27 (Fri) 28 (Sat) 29 (Sun) 30 (Mon) 31 (Tue) ~ August 1 (Sun) 2 (Mon) 3 (Tue) 4 (Wed) 5 (Thu) 6 (Fri) 7 (Sat) 8 (Sun) 9 (Mon) 10 (Tue) 11 (Wed) 12 (Thu) 13 (Fri) 14 (Sat) 15 (Sun) 16 (Mon) 17 (Tue) 18 (Wed) 19 (Thu) 20 (Fri) 21 (Sat) 22 (Sun) 23 (Mon) 24 (Tue) 25 (Wed) 26 (Thu) 27 (Fri) 28 (Sat) 29 (Sun) 30 (Mon) 31 (Tue) 1-7 8-14 15-21 22-end Whole month
You can also click two dates on the axis. Hover a cell to see that day's rain. By year Driest trips first
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
Trip rain days Month rain days 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 Dates outside your trip are dimmed.
One row per year, one cell per day. 2016 had 2 rain days, 2021 had 19.
Nagasaki through the year What to pack Loose linen or quick-dry cotton, a wide-brimmed hat and sunscreen were the basics. A water bottle stayed in the bag, and midday plans moved indoors.
Rainy days were mixed in often enough that shoes you cannot get wet are a bad bet.
Common questions Does it rain a lot in Nagasaki in August? Over the past 20 years August averaged 11 rain days (1 mm or more) out of 31. Individual years ran from 2 in the driest to 19 in the wettest.
What should I wear in Nagasaki in August? Days averaged 32°C and nights 26°C. Pack a compact umbrella, T-shirts, sunscreen plus a hat, and insect repellent.
Is August a good time to visit Nagasaki? On warmth and rain days alone, Nagasaki's easiest months were May and October. August ranked 9 of 12.
Is Nagasaki humid in August? Mean relative humidity was 83%, with about 31 muggy days (dew point of 20°C or more) in the month.
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