yearsofweather

Bali in September:
hot

Bali, Indonesia · Records from 2006 to 2025. Not a forecast. Rain not yet station-calibrated Temperature not station-corrected

Mean high29°Hottest day 30.7° (2024)
Mean low24°Coldest night 21.5° (2012)
Rain days12 days1-25 by year
Rainfall74mmDaylight 12.0 → 12.2 h
Bali's 12 months iBest: July to September (rain uncalibrated)
Trip types Beach Finewarm sea and frequent rainSightseeing on foot Finefrequent rain and muggy
Humidity86%30 muggy days
Clear days1 day7 overcast days
Mean wind9 km/hRarely windy
Sea temperature26.8°26-27.4° by year (last 6)
Sunrise / sunset (15th)06:13 / 18:16Daylight 12.0 → 12.2 h

Bali in September

The peak eases, and September is counted with May and June as a time of good weather and thinner crowds. The weather stays close to August. Off Nusa Penida, ocean sunfish are generally reported to show up between July and October.

Days averaged 29°C and nights 24°C. Midday was for air conditioning, a cold drink or a long lunch out of the sun. The gap between day and night was just 5°C, so it felt much the same around the clock. About 12 days a month saw rain, enough that a wet-weather plan was worth having. It varied a lot from year to year. September 2006 had 1 rain day; 2010 had 25.

Highs passed 30°C on 1 day on average.

Date by date i

‹ August September 2027 October ›
Sun
Mon
Tue
Wed
Thu
Fri
Sat
Week
1-4rain on 35% of days28° 24°
5-11rain on 40% of days28° 24°
12-18rain on 41% of days28° 24°
19-25rain on 41% of days29° 24°
26-30rain on 46% of days29° 24°

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

1-4rain on 35% of days28° 24°
5-11rain on 40% of days28° 24°
12-18rain on 41% of days28° 24°
19-25rain on 41% of days29° 24°
26-30rain on 46% of days29° 24°
Tap another date to change

2006none
2007none
20081mm
20093mm
201048mm
20111mm
20121mm
20131mm
2014none
20151mm
2016none
20171mm
2018none
20191mm
20201mm
2021none
20223mm
20231mm
2024none
2025none
Holidays in September (2027)
  • September 6 Labor Day

1 US holidays (flights fill up)

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 1 d
2007
0 d 1 d
2008
4 d 11 d
2009
5 d 17 d
2010
7 d 25 d
2011
3 d 13 d
2012
1 d 8 d
2013
3 d 10 d
2014
0 d 1 d
2015
3 d 6 d
2016
2 d 22 d
2017
2 d 14 d
2018
2 d 8 d
2019
1 d 7 d
2020
1 d 12 d
2021
4 d 22 d
2022
7 d 25 d
2023
4 d 8 d
2024
3 d 18 d
2025
4 d 17 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
7
5
7
9
9
12
8
7
6
6
8
9
9
6
9
9
9
7
11
9
7
8
7
8
8
9
9
7
11
10
Rain days on trip
00457313032221147434

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

One row per year, one cell per day. 2006 had 1 rain day, 2010 had 25.

Bali through the year

MonthHighLowRain daysRainfallSea
January 30°26°28 days364mm 29°
February 30°26°27 days346mm 29°
March 30°26°29 days321mm 29°
April 30°26°23 days207mm 29°
May 30°26°20 days138mm 28°
June 29°25°15 days78mm 28°
JulyGood 28°24°14 days62mm 27°
AugustGood 28°24°11 days40mm 27°
SeptemberGood 29°24°12 days74mm 27°
October 30°25°16 days105mm 28°
November 30°26°24 days265mm 29°
December 30°26°28 days372mm 29°

Common questions

Does it rain a lot in Bali in September?

Over the past 20 years September averaged 12 rain days (1 mm or more) out of 30. Individual years ran from 1 in the driest to 25 in the wettest. Rain for this month is not yet station-calibrated and may be overcounted.

What should I wear in Bali in September?

Days averaged 29°C and nights 24°C. Pack an umbrella, sandals that can get wet, T-shirts, sunscreen plus a hat, a swimsuit, and insect repellent.

Can you swim in Bali in September?

Sea surface temperature averaged 26.8°C in September, comfortable for swimming. Year to year it ranged 26-27.4°C. Check local flags for waves and jellyfish on the day.

Is September a good time to visit Bali?

On warmth and rain days alone, Bali's easiest months were July to September. September ranked 2 of 12, close to the top.

Is Bali humid in September?

Mean relative humidity was 86%, with about 30 muggy days (dew point of 20°C or more) in the month.