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September weather forecast in Rabaul

30 days Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

30 days Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Sun

Sunday

Mon

Monday

Tue

Tuesday

Wed

Wednesday

Thu

Thursday

Fri

Friday

Sat

Saturday

31 August, sun

	749 mmHg		72%
	4.5 m/s		+29

31 August, Sunday. day, 29°; night, 27°; clear

1 September, mon

	749 mmHg		72%
	4.5 m/s		+29

1 September, Monday. day, 29°; night, 27°; rain

2 September, tue

	749 mmHg		72%
	5 m/s		+29

2 September, Tuesday. day, 29°; night, 27°; rain

3 September, wed

	749 mmHg		70%
	5.1 m/s		+29

3 September, Wednesday. day, 29°; night, 27°; partly cloudy

4 September, thu

	749 mmHg		73%
	4.8 m/s		+29

4 September, Thursday. day, 29°; night, 27°; clear

5 September, fri

	749 mmHg		74%
	4.9 m/s		+29

5 September, Friday. day, 29°; night, 27°; clear

6 September, sat

	749 mmHg		70%
	5.3 m/s		+29

6 September, Saturday. day, 29°; night, 27°; partly cloudy

7 September, sun

	749 mmHg		72%
	4.1 m/s		+29

7 September, Sunday. day, 29°; night, 27°; rain

8 September, mon

	749 mmHg		69%
	4 m/s		+29

8 September, Monday. day, 29°; night, 27°; clear

9 September, tue

	749 mmHg		72%
	4.8 m/s		+29

9 September, Tuesday. day, 29°; night, 27°; rain

10 September, wed

	749 mmHg		72%
	4.5 m/s		+29

10 September, Wednesday. day, 29°; night, 27°; rain

11 September, thu

	749 mmHg		72%
	4.4 m/s		+29

11 September, Thursday. day, 29°; night, 27°; clear

12 September, fri

	749 mmHg		74%
	4.5 m/s		+29

12 September, Friday. day, 29°; night, 27°; clear

13 September, sat

	749 mmHg		72%
	4.3 m/s		+29

13 September, Saturday. day, 29°; night, 27°; clear

14 September, sun

	748 mmHg		73%
	5 m/s		+29

14 September, Sunday. day, 29°; night, 27°; clear

15 September, mon

	749 mmHg		74%
	4.9 m/s		+29

15 September, Monday. day, 29°; night, 27°; clear

16 September, tue

	749 mmHg		72%
	4.5 m/s		+30

16 September, Tuesday. day, 29°; night, 27°; rain

17 September, wed

	749 mmHg		69%
	3.7 m/s		+30

17 September, Wednesday. day, 29°; night, 27°; rain

18 September, thu

	749 mmHg		68%
	4.5 m/s		+30

18 September, Thursday. day, 29°; night, 27°; rain

19 September, fri

	749 mmHg		68%
	4.3 m/s		+30

19 September, Friday. day, 29°; night, 27°; rain

20 September, sat

	749 mmHg		68%
	4.4 m/s		+30

20 September, Saturday. day, 29°; night, 27°; partly cloudy

21 September, sun

	749 mmHg		69%
	4 m/s		+30

21 September, Sunday. day, 29°; night, 27°; rain

22 September, mon

	749 mmHg		72%
	4.1 m/s		+30

22 September, Monday. day, 29°; night, 27°; rain

23 September, tue

	749 mmHg		70%
	3.7 m/s		+30

23 September, Tuesday. day, 29°; night, 27°; rain

24 September, wed

	749 mmHg		69%
	4.4 m/s		+30

24 September, Wednesday. day, 29°; night, 27°; partly cloudy

25 September, thu

	749 mmHg		69%
	4.6 m/s		+30

25 September, Thursday. day, 30°; night, 27°; partly cloudy

26 September, fri

	749 mmHg		70%
	4.1 m/s		+30

26 September, Friday. day, 29°; night, 27°; rain

27 September, sat

	748 mmHg		70%
	3.5 m/s		+30

27 September, Saturday. day, 29°; night, 27°; rain

28 September, sun

	748 mmHg		68%
	5.5 m/s		+30

28 September, Sunday. day, 29°; night, 27°; rain

29 September, mon

	749 mmHg		68%
	5.5 m/s		+30

29 September, Monday. day, 29°; night, 27°; clear

30 September, tue

	749 mmHg		72%
	4.6 m/s		+30

30 September, Tuesday. day, 29°; night, 27°; rain

1 October, wed

	749 mmHg		72%
	4.3 m/s		+30

1 October, Wednesday. day, 29°; night, 27°; partly cloudy

2 October, thu

	749 mmHg		72%
	4.4 m/s		+30

2 October, Thursday. day, 29°; night, 27°; partly cloudy

3 October, fri

	749 mmHg		68%
	4.5 m/s		+30

3 October, Friday. day, 29°; night, 27°; overcast

4 October, sat

	748 mmHg		69%
	4.4 m/s		+30

4 October, Saturday. day, 29°; night, 27°; clear

Average data for 10 years

Rabaul September

9

sunny days

16

days with precipitation

5

cloudy days

9 sunny days; 16 days with precipitation; 5 cloudy days;

70

%

air humidity

3.4

m/s

WindSE

110

mm of precipitation

(9% of annual average)

+30

°C

Water temperature

air humidity 70%; 110 millimeters of precipitation (9% of annual average); Wind south-easterly 3.4 Meters per second; Water temperature +30°

Weather graphs for September

TemperatureWater temperaturePrecipitation chance, %Humidity, %Wind, m/sPressure, mmHg

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Average data for 10 years

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Daytime temperature

Night-time temperature

Cities near you

Port Moresby
Lae
Goroka
Kavieng
Munda
Mount-Hagen
Yandina
Gurney Airport
Namatanai

Cities with similar weather in September

Pattaya
Nha Trang
Bangkok
Punta Cana
Havana
Singapore
Cancun
Boca Chica
Manila

The weather forecast for September 2025 is based on historical data from the past 10 years.

In September, the weather in Rabaul is typically hot. Average daily high temperature in September is about 29 degrees above zero. On average, Rabaul has 16 rainy, 9 sunny, and 5 partly cloudy days in September. The rains are usually heavy. September as well as March, April, May, and June is considered the most uncomfortable time to visit Rabaul.

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