January 10° · ☂ 7 February 11° · ☂ 8 March 15° · ☂ 9 April 20° · ☂ 9 ★ May24° · ☂ 9 June 27° · ☂ 12 July 32° · ☂ 10 August 33° · ☂ 8 September 30° · ☂ 9 ★ October24° · ☂ 7 November 18° · ☂ 7 December 13° · ☂ 8 Matsuyama in August:seriously hot, occasional rain Matsuyama, Japan · Records from 2006 to 2025. Not a forecast.
Mean high 33° Hottest day 36.5° (2013)
Mean low 25° Coldest night 19.3° (2009)
Rain days 8 days 1-18 by year
Rainfall 111mm Daylight 13.8 → 12.9 h
Matsuyama'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 78% 31 muggy days
Clear days 6 days 10 overcast days
Mean wind 6 km/h Rarely windy
Sunrise / sunset (15th) 05:31 / 18:57 Daylight 13.8 → 12.9 h
Matsuyama in August Matsuyama Matsuri takes place over three days around the second weekend of August, with the Yakyuken dance. It is the hottest month but dry on the Inland Sea side. Skip climbing the castle at midday.
Days averaged 33°C and nights 25°C. Midday was for air conditioning, a cold drink or a long lunch out of the sun. With about 8 rain days, showers were an occasional nuisance rather than the rule. It varied a lot from year to year. August 2016 had 1 rain day; 2014 had 18.
Highs topped 30°C on 27 days of the month on average. Mixing in indoor stops at midday made sense.
Typhoons i 10 of the last 20 years had a tropical storm pass within 300 km this month.
Shanshan (2024), 34 km away typhoon strength Krosa (2019), 38 km away tropical storm Lupit (2021), 44 km away tropical storm 1 2 3 4 1 5 2 6 7 7 10 8 12 9 5 10 11 12
Date by date i Sun
Mon
Tue
Wed
Thu
Fri
Sat
Week
August 1 Sunday 1 rain in 2 of 20 yrs 2/20 33° 25° August 2 Monday 2 rain in 5 of 20 yrs 5/20 33° 25° August 3 Tuesday 3 rain in 3 of 20 yrs 3/20 33° 25° August 4 Wednesday 4 rain in 1 of 20 yrs 1/20 34° 25° August 5 Thursday 5 rain in 4 of 20 yrs 4/20 33° 25° August 6 Friday 6 rain in 5 of 20 yrs 5/20 33° 25° August 7 Saturday 7 rain in 6 of 20 yrs 6/20 33° 25° 1-7 rain on 19% of days 33° 25°
August 8 Sunday 8 rain in 5 of 20 yrs 5/20 33° 25° August 9 Monday 9 rain in 7 of 20 yrs 7/20 33° 25° August 10 Tuesday 10 rain in 3 of 20 yrs 3/20 33° 25° August 11 Wednesday 11 rain in 6 of 20 yrs 6/20 33° 25° August 12 Thursday 12 rain in 3 of 20 yrs 3/20 33° 25° August 13 Friday 13 rain in 4 of 20 yrs 4/20 33° 25° August 14 Saturday 14 rain in 4 of 20 yrs 4/20 33° 25° 8-14 rain on 23% of days 33° 25°
August 15 Sunday 15 rain in 7 of 20 yrs 7/20 33° 25° August 16 Monday 16 rain in 5 of 20 yrs 5/20 33° 25° August 17 Tuesday 17 rain in 7 of 20 yrs 7/20 33° 25° August 18 Wednesday 18 rain in 7 of 20 yrs 7/20 33° 24° August 19 Thursday 19 rain in 6 of 20 yrs 6/20 32° 25° August 20 Friday 20 rain in 4 of 20 yrs 4/20 33° 25° August 21 Saturday 21 rain in 4 of 20 yrs 4/20 33° 25° 15-21 rain on 29% of days 33° 25°
August 22 Sunday 22 rain in 5 of 20 yrs 5/20 33° 25° August 23 Monday 23 rain in 6 of 20 yrs 6/20 33° 25° August 24 Tuesday 24 rain in 5 of 20 yrs 5/20 32° 24° August 25 Wednesday 25 rain in 6 of 20 yrs 6/20 32° 24° August 26 Thursday 26 rain in 7 of 20 yrs 7/20 32° 24° August 27 Friday 27 rain in 3 of 20 yrs 3/20 32° 24° August 28 Saturday 28 rain in 4 of 20 yrs 4/20 32° 24° 22-28 rain on 26% of days 32° 24°
August 29 Sunday 29 rain in 8 of 20 yrs 8/20 32° 24° August 30 Monday 30 rain in 8 of 20 yrs 8/20 31° 24° August 31 Tuesday 31 rain in 7 of 20 yrs 7/20 31° 24°
29-31 rain on 38% of days 31° 24°
1-7 rain on 19% of days 33° 25° 8-14 rain on 23% of days 33° 25° 15-21 rain on 29% of days 33° 25° 22-28 rain on 26% of days 32° 24° 29-31 rain on 38% of days 31° 24°
Sun
Mon
Tue
Wed
Thu
Fri
Sat
Week
August 1 Tuesday 1 rain in 2 of 20 yrs 2/20 33° 25° August 2 Wednesday 2 rain in 5 of 20 yrs 5/20 33° 25° August 3 Thursday 3 rain in 3 of 20 yrs 3/20 33° 25° August 4 Friday 4 rain in 1 of 20 yrs 1/20 34° 25° August 5 Saturday 5 rain in 4 of 20 yrs 4/20 33° 25° 1-5 rain on 15% of days 33° 25°
August 6 Sunday 6 rain in 5 of 20 yrs 5/20 33° 25° August 7 Monday 7 rain in 6 of 20 yrs 6/20 33° 25° August 8 Tuesday 8 rain in 5 of 20 yrs 5/20 33° 25° August 9 Wednesday 9 rain in 7 of 20 yrs 7/20 33° 25° August 10 Thursday 10 rain in 3 of 20 yrs 3/20 33° 25° August 11 Friday 11 rain in 6 of 20 yrs 6/20 33° 25° August 12 Saturday 12 rain in 3 of 20 yrs 3/20 33° 25° 6-12 rain on 25% of days 33° 25°
August 13 Sunday 13 rain in 4 of 20 yrs 4/20 33° 25° August 14 Monday 14 rain in 4 of 20 yrs 4/20 33° 25° August 15 Tuesday 15 rain in 7 of 20 yrs 7/20 33° 25° August 16 Wednesday 16 rain in 5 of 20 yrs 5/20 33° 25° August 17 Thursday 17 rain in 7 of 20 yrs 7/20 33° 25° August 18 Friday 18 rain in 7 of 20 yrs 7/20 33° 24° August 19 Saturday 19 rain in 6 of 20 yrs 6/20 32° 25° 13-19 rain on 29% of days 33° 25°
August 20 Sunday 20 rain in 4 of 20 yrs 4/20 33° 25° August 21 Monday 21 rain in 4 of 20 yrs 4/20 33° 25° August 22 Tuesday 22 rain in 5 of 20 yrs 5/20 33° 25° August 23 Wednesday 23 rain in 6 of 20 yrs 6/20 33° 25° August 24 Thursday 24 rain in 5 of 20 yrs 5/20 32° 24° August 25 Friday 25 rain in 6 of 20 yrs 6/20 32° 24° August 26 Saturday 26 rain in 7 of 20 yrs 7/20 32° 24° 20-26 rain on 26% of days 32° 25°
August 27 Sunday 27 rain in 3 of 20 yrs 3/20 32° 24° August 28 Monday 28 rain in 4 of 20 yrs 4/20 32° 24° August 29 Tuesday 29 rain in 8 of 20 yrs 8/20 32° 24° August 30 Wednesday 30 rain in 8 of 20 yrs 8/20 31° 24° August 31 Thursday 31 rain in 7 of 20 yrs 7/20 31° 24°
27-31 rain on 30% of days 32° 24°
1-5 rain on 15% of days 33° 25° 6-12 rain on 25% of days 33° 25° 13-19 rain on 29% of days 33° 25° 20-26 rain on 26% of days 32° 25° 27-31 rain on 30% of days 32° 24°
Tap another date to change
2006 1mm
2007 none
2008 29mm
2009 none
2010 none
2011 none
2012 13mm
2013 none
2014 12mm
2015 26mm
2016 15mm
2017 none
2018 none
2019 2mm
2020 none
2021 none
2022 none
2023 none
2024 55mm
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)
Day by day temperature i 23° 28° 33° 38° 1 8 15 22 29 31
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 1 rain day, 2014 had 18.
Matsuyama through the year Common questions Does it rain a lot in Matsuyama in August? Over the past 20 years August averaged 8 rain days (1 mm or more) out of 31. Individual years ran from 1 in the driest to 18 in the wettest.
What should I wear in Matsuyama in August? Days averaged 33°C and nights 25°C. Pack a compact umbrella, T-shirts, sunscreen plus a hat, and insect repellent.
Is August a good time to visit Matsuyama? On warmth and rain days alone, Matsuyama's easiest months were May and October. August ranked 7 of 12.
Is Matsuyama humid in August? Mean relative humidity was 78%, with about 31 muggy days (dew point of 20°C or more) in the month.
Previous month Matsuyama in July Next month Matsuyama in September Whole year Matsuyama weather by month Where to go August By country Japan: all cities this month