yearsofweather

Fukuoka in August:
seriously hot,

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

Mean high33°Hottest day 37.9° (2018)
Mean low26°Coldest night 17.9° (2009)
Rain days10 days5-19 by year
Rainfall280mmDaylight 13.8 → 12.9 h
Fukuoka's 12 months iBest: May and October
Trip types Beach Finewarm sea and storm riskSightseeing on foot Poorhot, muggy and storm risk
Humidity77%30 muggy days
Clear days6 days11 overcast days
Mean wind7 km/hRarely windy
Sea temperature28.1°27.1-29.3° by year (last 6)
Sunrise / sunset (15th)05:40 / 19:06Daylight 13.8 → 12.9 h

Fukuoka in August

Sweltering, humid midsummer. Rain stays heavy after July, so showers are common. Tropical cyclone news matters now, so watch the news for flights and Shinkansen. Plan indoors by day and yatai in the evening.

Fukuoka in August ran hot: 33°C by day and 26°C at night. By midday the shade was the best seat in town. There were 10 rain days on average, roughly one day in three. Year to year it swung widely, from 5 rain days in 2009 to 19 in 2014.

25 days past 30°C made it a month for early starts and a long lunch indoors. Not every year was typical: 2018 ran 2.3°C warmer than the mean, with highs of 34.8°C. Wet days did not mess around: about 28 mm each, the kind of rain that drives you into a doorway.

Typhoons i

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

  • Wukong (2006), 34 km away tropical storm
  • Francisco (2019), 35 km away typhoon strength
  • Goni (2015), 36 km away typhoon strength
1 2 3 4 5 6 67 128 129 410 11 12

Date by date i

‹ July August 2027 September ›
Sun
Mon
Tue
Wed
Thu
Fri
Sat
Week
1-7rain on 19% of days34° 26°
8-14rain on 31% of days33° 26°
15-21rain on 38% of days32° 25°
22-28rain on 39% of days32° 25°
29-31rain on 40% of days31° 24°

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

1-7rain on 19% of days34° 26°
8-14rain on 31% of days33° 26°
15-21rain on 38% of days32° 25°
22-28rain on 39% of days32° 25°
29-31rain on 40% of days31° 24°
Tap another date to change

200619mm
2007none
200829mm
20092mm
201014mm
201110mm
20124mm
2013none
2014none
201551mm
2016none
20178mm
2018none
2019none
2020none
2021100mm
202239mm
202326mm
2024none
2025none
Holidays in August (2027)
  • August 11 Mountain Day
  • August 13 to August 16 Obon

1 Local public holiday or break (busier, pricier)

Day by day temperature i

22°28°33°39° 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
0 d 12 d
2007
2 d 6 d
2008
0 d 13 d
2009
1 d 5 d
2010
1 d 8 d
2011
0 d 12 d
2012
0 d 11 d
2013
1 d 7 d
2014
5 d 19 d
2015
0 d 11 d
2016
3 d 5 d
2017
0 d 8 d
2018
0 d 5 d
2019
2 d 15 d
2020
1 d 7 d
2021
4 d 18 d
2022
3 d 11 d
2023
1 d 13 d
2024
0 d 6 d
2025
2 d 9 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
3
5
3
3
3
6
6
7
5
7
8
5
6
6
8
11
7
8
7
6
10
10
9
8
7
4
6
9
9
6
Rain days on trip
02011001503002143102

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

One row per year, one cell per day. 2009 had 5 rain days, 2014 had 19.

Fukuoka through the year

MonthHighLowRain daysRainfallSea
January 10°4°9 days71mm 15°
February 12°4°9 days80mm 14°
March 15°8°10 days103mm 15°
April 20°12°10 days116mm 16°
MayGood 24°16°8 days137mm 19°
June 27°20°12 days245mm 22°
July 32°25°11 days293mm 26°
August 33°26°10 days280mm 28°
September 29°22°11 days161mm 27°
OctoberGood 24°16°7 days83mm 24°
November 18°11°9 days91mm 21°
December 13°6°9 days67mm 18°

Common questions

Does it rain a lot in Fukuoka in August?

Over the past 20 years August averaged 10 rain days (1 mm or more) out of 31. Individual years ran from 5 in the driest to 19 in the wettest.

What should I wear in Fukuoka in August?

Days averaged 33°C and nights 26°C. Pack a compact umbrella, T-shirts, sunscreen plus a hat, a swimsuit, and insect repellent.

Can you swim in Fukuoka in August?

Sea surface temperature averaged 28.1°C in August, warm enough to stay in for a long swim. Year to year it ranged 27.1-29.3°C. Check local flags for waves and jellyfish on the day.

Is August a good time to visit Fukuoka?

On warmth and rain days alone, Fukuoka's easiest months were May and October. August ranked 9 of 12.

Is Fukuoka humid in August?

Mean relative humidity was 77%, with about 30 muggy days (dew point of 20°C or more) in the month.