January 10° · ☂ 4 February 11° · ☂ 6 March 15° · ☂ 8 April 20° · ☂ 10 ★ May24° · ☂ 10 June 27° · ☂ 11 July 31° · ☂ 11 August 32° · ☂ 9 September 28° · ☂ 11 October 22° · ☂ 11 November 17° · ☂ 8 December 12° · ☂ 6 Tokyo in September:hot, frequent rain Tokyo, Japan · Records from 2006 to 2025. Not a forecast.
Mean high 28° Hottest day 36.3° (2025)
Mean low 21° Coldest night 12.6° (2018)
Rain days 11 days 7-17 by year
Rainfall 214mm Daylight 13.0 → 11.9 h
Tokyo's 12 months i Best: May
1 2 3 4 5 6 7 8 9 10 11 12
Trip types Sightseeing on foot Finemuggy and storm risk
Humidity 78% 15 muggy days
Clear days 4 days 12 overcast days
Mean wind 12 km/h Rarely windy
Sunrise / sunset (15th) 05:23 / 17:50 Daylight 13.0 → 11.9 h
Tokyo in September Summer heat lingers while the autumn rain front and typhoons overlap, making this one of the wettest months. Keep a spare day for outdoor plans. In years when the weekday between Respect for the Aged Day and Autumnal Equinox Day becomes a holiday, Silver Week brings more domestic travelers.
Highs averaged 28°C and lows fell only to 21°C, so evenings brought some relief. Rain fell on 11 days of the month on average. Most years sat near the average of 11, though 2009 dipped to 7 and 2012 climbed to 17.
Highs passed 30°C on 9 days on average. The warmest year was 2023, with highs averaging 30.8°C, 2.9°C above normal. Each rainy day brought about 20 mm, closer to downpours than drizzle.
Typhoons i 10 of the last 20 years had a tropical storm pass within 300 km this month.
Faxai (2019), 28 km away typhoon strength Fitow (2007), 45 km away typhoon strength Roke (2011), 51 km away typhoon strength 1 2 3 4 1 5 2 6 4 7 7 8 10 9 9 10 11 12
Date by date i Sun
Mon
Tue
Wed
Thu
Fri
Sat
Week
September 1 Wednesday 1 rain in 11 of 20 yrs 11/20 30° 23° September 2 Thursday 2 rain in 7 of 20 yrs 7/20 30° 23° September 3 Friday 3 rain in 6 of 20 yrs 6/20 30° 23° September 4 Saturday 4 rain in 10 of 20 yrs 10/20 29° 23° 1-4 rain on 43% of days 30° 23°
September 5 Sunday 5 rain in 5 of 20 yrs 5/20 30° 23° September 6 Monday 6 rain in 11 of 20 yrs 11/20 30° 23° September 7 Tuesday 7 rain in 8 of 20 yrs 8/20 30° 22° September 8 Wednesday 8 rain in 10 of 20 yrs 10/20 29° 22° September 9 Thursday 9 rain in 6 of 20 yrs 6/20 30° 22° September 10 Friday 10 rain in 5 of 20 yrs 5/20 30° 22° September 11 Saturday 11 rain in 7 of 20 yrs 7/20 29° 22° 5-11 rain on 37% of days 30° 22°
September 12 Sunday 12 rain in 7 of 20 yrs 7/20 28° 22° September 13 Monday 13 rain in 5 of 20 yrs 5/20 29° 21° September 14 Tuesday 14 rain in 8 of 20 yrs 8/20 29° 21° September 15 Wednesday 15 rain in 6 of 20 yrs 6/20 28° 21° September 16 Thursday 16 rain in 8 of 20 yrs 8/20 28° 21° September 17 Friday 17 rain in 6 of 20 yrs 6/20 28° 21° September 18 Saturday 18 rain in 10 of 20 yrs 10/20 29° 21° 12-18 rain on 36% of days 28° 21°
September 19 Sunday 19 rain in 8 of 20 yrs 8/20 28° 21° September 20 Monday 20 rain in 7 of 20 yrs 7/20 27° 20° September 21 Tuesday 21 rain in 5 of 20 yrs 5/20 27° 19° September 22 Wednesday 22 rain in 11 of 20 yrs 11/20 27° 20° September 23 Thursday 23 rain in 10 of 20 yrs 10/20 25° 19° September 24 Friday 24 rain in 6 of 20 yrs 6/20 26° 18° September 25 Saturday 25 rain in 9 of 20 yrs 9/20 26° 19° 19-25 rain on 40% of days 27° 19°
September 26 Sunday 26 rain in 6 of 20 yrs 6/20 26° 18° September 27 Monday 27 rain in 6 of 20 yrs 6/20 25° 18° September 28 Tuesday 28 rain in 4 of 20 yrs 4/20 26° 18° September 29 Wednesday 29 rain in 4 of 20 yrs 4/20 25° 18° September 30 Thursday 30 rain in 7 of 20 yrs 7/20 25° 18°
26-30 rain on 27% of days 25° 18°
1-4 rain on 43% of days 30° 23° 5-11 rain on 37% of days 30° 22° 12-18 rain on 36% of days 28° 21° 19-25 rain on 40% of days 27° 19° 26-30 rain on 27% of days 25° 18°
Sun
Mon
Tue
Wed
Thu
Fri
Sat
Week
September 1 Friday 1 rain in 11 of 20 yrs 11/20 30° 23° September 2 Saturday 2 rain in 7 of 20 yrs 7/20 30° 23° 1-2 rain on 45% of days 30° 23°
September 3 Sunday 3 rain in 6 of 20 yrs 6/20 30° 23° September 4 Monday 4 rain in 10 of 20 yrs 10/20 29° 23° September 5 Tuesday 5 rain in 5 of 20 yrs 5/20 30° 23° September 6 Wednesday 6 rain in 11 of 20 yrs 11/20 30° 23° September 7 Thursday 7 rain in 8 of 20 yrs 8/20 30° 22° September 8 Friday 8 rain in 10 of 20 yrs 10/20 29° 22° September 9 Saturday 9 rain in 6 of 20 yrs 6/20 30° 22° 3-9 rain on 40% of days 30° 23°
September 10 Sunday 10 rain in 5 of 20 yrs 5/20 30° 22° September 11 Monday 11 rain in 7 of 20 yrs 7/20 29° 22° September 12 Tuesday 12 rain in 7 of 20 yrs 7/20 28° 22° September 13 Wednesday 13 rain in 5 of 20 yrs 5/20 29° 21° September 14 Thursday 14 rain in 8 of 20 yrs 8/20 29° 21° September 15 Friday 15 rain in 6 of 20 yrs 6/20 28° 21° September 16 Saturday 16 rain in 8 of 20 yrs 8/20 28° 21° 10-16 rain on 33% of days 29° 22°
September 17 Sunday 17 rain in 6 of 20 yrs 6/20 28° 21° September 18 Monday 18 rain in 10 of 20 yrs 10/20 29° 21° September 19 Tuesday 19 rain in 8 of 20 yrs 8/20 28° 21° September 20 Wednesday 20 rain in 7 of 20 yrs 7/20 27° 20° September 21 Thursday 21 rain in 5 of 20 yrs 5/20 27° 19° September 22 Friday 22 rain in 11 of 20 yrs 11/20 27° 20° September 23 Saturday 23 rain in 10 of 20 yrs 10/20 25° 19° 17-23 rain on 41% of days 27° 20°
September 24 Sunday 24 rain in 6 of 20 yrs 6/20 26° 18° September 25 Monday 25 rain in 9 of 20 yrs 9/20 26° 19° September 26 Tuesday 26 rain in 6 of 20 yrs 6/20 26° 18° September 27 Wednesday 27 rain in 6 of 20 yrs 6/20 25° 18° September 28 Thursday 28 rain in 4 of 20 yrs 4/20 26° 18° September 29 Friday 29 rain in 4 of 20 yrs 4/20 25° 18° September 30 Saturday 30 rain in 7 of 20 yrs 7/20 25° 18° 24-30 rain on 30% of days 25° 18°
1-2 rain on 45% of days 30° 23° 3-9 rain on 40% of days 30° 23° 10-16 rain on 33% of days 29° 22° 17-23 rain on 41% of days 27° 20° 24-30 rain on 30% of days 25° 18°
Tap another date to change
2006 22mm
2007 none
2008 none
2009 none
2010 none
2011 49mm
2012 7mm
2013 3mm
2014 65mm
2015 1mm
2016 none
2017 6mm
2018 45mm
2019 none
2020 none
2021 5mm
2022 9mm
2023 none
2024 5mm
2025 none
Holidays in September (2027) September 18 to September 20 Respect for the Aged Day long weekendSeptember 23 Autumnal Equinox DaySeptember 6 Labor Day 1 Local public holiday or break (busier, pricier)1 US holidays (flights fill up)
Holidays in September (2028)
Day by day temperature i 16° 23° 31° 38° 1 8 15 22 29 30
Your trip dates, the past 20 years Trip dates September 1 (Wed) 2 (Thu) 3 (Fri) 4 (Sat) 5 (Sun) 6 (Mon) 7 (Tue) 8 (Wed) 9 (Thu) 10 (Fri) 11 (Sat) 12 (Sun) 13 (Mon) 14 (Tue) 15 (Wed) 16 (Thu) 17 (Fri) 18 (Sat) 19 (Sun) 20 (Mon) 21 (Tue) 22 (Wed) 23 (Thu) 24 (Fri) 25 (Sat) 26 (Sun) 27 (Mon) 28 (Tue) 29 (Wed) 30 (Thu) ~ September 1 (Wed) 2 (Thu) 3 (Fri) 4 (Sat) 5 (Sun) 6 (Mon) 7 (Tue) 8 (Wed) 9 (Thu) 10 (Fri) 11 (Sat) 12 (Sun) 13 (Mon) 14 (Tue) 15 (Wed) 16 (Thu) 17 (Fri) 18 (Sat) 19 (Sun) 20 (Mon) 21 (Tue) 22 (Wed) 23 (Thu) 24 (Fri) 25 (Sat) 26 (Sun) 27 (Mon) 28 (Tue) 29 (Wed) 30 (Thu) 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
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 1 Wed Pick September 1
11 4 Sat Pick September 4
10 6 Mon Pick September 6
11 8 Wed Pick September 8
10 10 Fri Pick September 10
5 11 Sat Pick September 11
7 12 Sun Pick September 12
7 13 Mon Pick September 13
5 14 Tue Pick September 14
8 15 Wed Pick September 15
6 16 Thu Pick September 16
8 17 Fri Pick September 17
6 18 Sat Pick September 18
10 19 Sun Pick September 19
8 20 Mon Pick September 20
7 21 Tue Pick September 21
5 22 Wed Pick September 22
11 23 Thu Pick September 23
10 24 Fri Pick September 24
6 25 Sat Pick September 25
9 26 Sun Pick September 26
6 27 Mon Pick September 27
6 28 Tue Pick September 28
4 29 Wed Pick September 29
4 30 Thu Pick September 30
7 Dates outside your trip are dimmed.
One row per year, one cell per day. 2009 had 7 rain days, 2012 had 17.
What to pack Loose, light-colored clothes, sandals and a hat did most of the work at 28°C. Sights went in the morning, with a break in the middle of the day.
A packable rain jacket weighs almost nothing and covers 11 rain days. Leave the suede at home.
Common questions Does it rain a lot in Tokyo in September? Over the past 20 years September averaged 11 rain days (1 mm or more) out of 30. Individual years ran from 7 in the driest to 17 in the wettest.
What should I wear in Tokyo in September? Days averaged 28°C and nights 21°C. Pack a compact umbrella, T-shirts, a light layer for the evenings, sunscreen plus a hat, and insect repellent.
Is September a good time to visit Tokyo? On warmth and rain days alone, Tokyo's easiest month was May. September ranked 5 of 12.
Is Tokyo humid in September? Mean relative humidity was 78%, with about 15 muggy days (dew point of 20°C or more) in the month.
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