January 20° · ☂ 15 ★ February21° · ☂ 13 ★ March23° · ☂ 13 April 26° · ☂ 16 May 30° · ☂ 20 June 32° · ☂ 22 July 34° · ☂ 19 August 34° · ☂ 21 September 32° · ☂ 17 October 28° · ☂ 18 ★ November25° · ☂ 17 December 21° · ☂ 17 Taipei in September:very hot Taipei, Taiwan · Records from 2006 to 2025. Not a forecast. Rain not yet station-calibrated Temperature not station-corrected
Mean high 32° Hottest day 37.1° (2017)
Mean low 26° Coldest night 19.9° (2012)
Rain days 17 days 8-24 by year
Rainfall 255mm Daylight 12.7 → 12.0 h
Taipei's 12 months i Best: February, March and November (rain uncalibrated)
1 2 3 4 5 6 7 8 9 10 11 12
Trip types Sightseeing on foot Poorhot, frequent rain, muggy and storm risk
Humidity 80% 29 muggy days
Clear days 6 days 11 overcast days
Mean wind 9 km/h Rarely windy
Sunrise / sunset (15th) 05:39 / 17:59 Daylight 12.7 → 12.0 h
Taipei in September The heat continues and typhoons are still possible. Rain is also common. The Mid-Autumn Festival is on the fifteenth day of the eighth lunar month, between mid-September and early October, and travel bookings fill quickly over the holiday.
September brought serious heat to Taipei, 32°C on a typical afternoon and 26°C overnight. Early mornings were the best time to be outside. Rain fell on more than half the days: 17 on average. It varied a lot from year to year. September 2011 had 8 rain days; 2012 had 24.
Highs topped 30°C on 23 days of the month on average. Mixing in indoor stops at midday made sense. Not every year was typical: 2025 ran 2.4°C warmer than the mean, with highs of 34.2°C. Each rainy day brought about 15 mm, closer to downpours than drizzle.
Typhoons i 11 of the last 20 years had a tropical storm pass within 300 km this month.
Sinlaku (2008), 14 km away typhoon strength Jangmi (2008), 37 km away typhoon strength Fung-Wong (2014), 45 km away tropical storm 1 2 3 4 1 5 6 6 10 7 12 8 11 9 3 10 1 11 12
Date by date i Sun
Mon
Tue
Wed
Thu
Fri
Sat
Week
September 1 Wednesday 1 rain in 12 of 20 yrs 12/20 33° 26° September 2 Thursday 2 rain in 14 of 20 yrs 14/20 33° 26° September 3 Friday 3 rain in 13 of 20 yrs 13/20 32° 26° September 4 Saturday 4 rain in 14 of 20 yrs 14/20 32° 26° 1-4 rain on 66% of days 33° 26°
September 5 Sunday 5 rain in 10 of 20 yrs 10/20 33° 26° September 6 Monday 6 rain in 12 of 20 yrs 12/20 33° 26° September 7 Tuesday 7 rain in 12 of 20 yrs 12/20 32° 26° September 8 Wednesday 8 rain in 10 of 20 yrs 10/20 32° 26° September 9 Thursday 9 rain in 13 of 20 yrs 13/20 32° 26° September 10 Friday 10 rain in 10 of 20 yrs 10/20 32° 25° September 11 Saturday 11 rain in 9 of 20 yrs 9/20 33° 26° 5-11 rain on 54% of days 32° 26°
September 12 Sunday 12 rain in 13 of 20 yrs 13/20 32° 26° September 13 Monday 13 rain in 14 of 20 yrs 14/20 32° 26° September 14 Tuesday 14 rain in 12 of 20 yrs 12/20 32° 26° September 15 Wednesday 15 rain in 15 of 20 yrs 15/20 32° 26° September 16 Thursday 16 rain in 10 of 20 yrs 10/20 32° 26° September 17 Friday 17 rain in 7 of 20 yrs 7/20 32° 25° September 18 Saturday 18 rain in 9 of 20 yrs 9/20 32° 25° 12-18 rain on 57% of days 32° 26°
September 19 Sunday 19 rain in 10 of 20 yrs 10/20 32° 25° September 20 Monday 20 rain in 9 of 20 yrs 9/20 31° 25° September 21 Tuesday 21 rain in 14 of 20 yrs 14/20 31° 25° September 22 Wednesday 22 rain in 12 of 20 yrs 12/20 31° 25° September 23 Thursday 23 rain in 6 of 20 yrs 6/20 31° 25° September 24 Friday 24 rain in 12 of 20 yrs 12/20 31° 25° September 25 Saturday 25 rain in 9 of 20 yrs 9/20 31° 25° 19-25 rain on 51% of days 31° 25°
September 26 Sunday 26 rain in 8 of 20 yrs 8/20 31° 25° September 27 Monday 27 rain in 10 of 20 yrs 10/20 30° 25° September 28 Tuesday 28 rain in 10 of 20 yrs 10/20 31° 25° September 29 Wednesday 29 rain in 11 of 20 yrs 11/20 31° 25° September 30 Thursday 30 rain in 12 of 20 yrs 12/20 31° 25°
26-30 rain on 51% of days 31° 25°
1-4 rain on 66% of days 33° 26° 5-11 rain on 54% of days 32° 26° 12-18 rain on 57% of days 32° 26° 19-25 rain on 51% of days 31° 25° 26-30 rain on 51% of days 31° 25°
Sun
Mon
Tue
Wed
Thu
Fri
Sat
Week
September 1 Friday 1 rain in 12 of 20 yrs 12/20 33° 26° September 2 Saturday 2 rain in 14 of 20 yrs 14/20 33° 26° 1-2 rain on 65% of days 33° 26°
September 3 Sunday 3 rain in 13 of 20 yrs 13/20 32° 26° September 4 Monday 4 rain in 14 of 20 yrs 14/20 32° 26° September 5 Tuesday 5 rain in 10 of 20 yrs 10/20 33° 26° September 6 Wednesday 6 rain in 12 of 20 yrs 12/20 33° 26° September 7 Thursday 7 rain in 12 of 20 yrs 12/20 32° 26° September 8 Friday 8 rain in 10 of 20 yrs 10/20 32° 26° September 9 Saturday 9 rain in 13 of 20 yrs 13/20 32° 26° 3-9 rain on 60% of days 32° 26°
September 10 Sunday 10 rain in 10 of 20 yrs 10/20 32° 25° September 11 Monday 11 rain in 9 of 20 yrs 9/20 33° 26° September 12 Tuesday 12 rain in 13 of 20 yrs 13/20 32° 26° September 13 Wednesday 13 rain in 14 of 20 yrs 14/20 32° 26° September 14 Thursday 14 rain in 12 of 20 yrs 12/20 32° 26° September 15 Friday 15 rain in 15 of 20 yrs 15/20 32° 26° September 16 Saturday 16 rain in 10 of 20 yrs 10/20 32° 26° 10-16 rain on 59% of days 32° 26°
September 17 Sunday 17 rain in 7 of 20 yrs 7/20 32° 25° September 18 Monday 18 rain in 9 of 20 yrs 9/20 32° 25° September 19 Tuesday 19 rain in 10 of 20 yrs 10/20 32° 25° September 20 Wednesday 20 rain in 9 of 20 yrs 9/20 31° 25° September 21 Thursday 21 rain in 14 of 20 yrs 14/20 31° 25° September 22 Friday 22 rain in 12 of 20 yrs 12/20 31° 25° September 23 Saturday 23 rain in 6 of 20 yrs 6/20 31° 25° 17-23 rain on 48% of days 31° 25°
September 24 Sunday 24 rain in 12 of 20 yrs 12/20 31° 25° September 25 Monday 25 rain in 9 of 20 yrs 9/20 31° 25° September 26 Tuesday 26 rain in 8 of 20 yrs 8/20 31° 25° September 27 Wednesday 27 rain in 10 of 20 yrs 10/20 30° 25° September 28 Thursday 28 rain in 10 of 20 yrs 10/20 31° 25° September 29 Friday 29 rain in 11 of 20 yrs 11/20 31° 25° September 30 Saturday 30 rain in 12 of 20 yrs 12/20 31° 25° 24-30 rain on 51% of days 31° 25°
1-2 rain on 65% of days 33° 26° 3-9 rain on 60% of days 32° 26° 10-16 rain on 59% of days 32° 26° 17-23 rain on 48% of days 31° 25° 24-30 rain on 51% of days 31° 25°
Tap another date to change
2006 21mm
2007 7mm
2008 99mm
2009 5mm
2010 1mm
2011 none
2012 36mm
2013 4mm
2014 none
2015 3mm
2016 10mm
2017 none
2018 5mm
2019 7mm
2020 4mm
2021 4mm
2022 6mm
2023 3mm
2024 none
2025 none
Holidays in September (2027) September 15 Mid-Autumn FestivalSeptember 28 Confucius' Birthday (Teachers' Day)September 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 22° 28° 33° 39° 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
12 2 Thu Pick September 2
14 3 Fri Pick September 3
13 4 Sat Pick September 4
14 5 Sun Pick September 5
10 6 Mon Pick September 6
12 7 Tue Pick September 7
12 8 Wed Pick September 8
10 9 Thu Pick September 9
13 10 Fri Pick September 10
10 11 Sat Pick September 11
9 12 Sun Pick September 12
13 13 Mon Pick September 13
14 14 Tue Pick September 14
12 15 Wed Pick September 15
15 16 Thu Pick September 16
10 17 Fri Pick September 17
7 18 Sat Pick September 18
9 19 Sun Pick September 19
10 20 Mon Pick September 20
9 21 Tue Pick September 21
14 22 Wed Pick September 22
12 23 Thu Pick September 23
6 24 Fri Pick September 24
12 25 Sat Pick September 25
9 26 Sun Pick September 26
8 27 Mon Pick September 27
10 28 Tue Pick September 28
10 29 Wed Pick September 29
11 30 Thu Pick September 30
12 Dates outside your trip are dimmed.
One row per year, one cell per day. 2011 had 8 rain days, 2012 had 24.
Common questions Does it rain a lot in Taipei in September? Over the past 20 years September averaged 17 rain days (1 mm or more) out of 30. Individual years ran from 8 in the driest to 24 in the wettest. Rain for this month is not yet station-calibrated and may be overcounted.
What should I wear in Taipei in September? Days averaged 32°C and nights 26°C. Pack an umbrella, sandals that can get wet, T-shirts, sunscreen plus a hat, and insect repellent.
Is September a good time to visit Taipei? On warmth and rain days alone, Taipei's easiest months were February, March and November. September ranked 9 of 12.
Is Taipei humid in September? Mean relative humidity was 80%, with about 29 muggy days (dew point of 20°C or more) in the month.
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