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September weather forecast in Principe

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

	760 mmHg		84%
	6.7 m/s		+27

31 August, Sunday. day, 25°; night, 24°; rain

1 September, mon

	760 mmHg		83%
	6.7 m/s		+27

1 September, Monday. day, 25°; night, 24°; partly cloudy

2 September, tue

	760 mmHg		83%
	6.5 m/s		+27

2 September, Tuesday. day, 25°; night, 24°; partly cloudy

3 September, wed

	760 mmHg		83%
	6.2 m/s		+27

3 September, Wednesday. day, 25°; night, 24°; partly cloudy

4 September, thu

	760 mmHg		84%
	6.6 m/s		+27

4 September, Thursday. day, 25°; night, 24°; rain

5 September, fri

	760 mmHg		84%
	6.7 m/s		+27

5 September, Friday. day, 25°; night, 24°; rain

6 September, sat

	760 mmHg		83%
	6.2 m/s		+27

6 September, Saturday. day, 25°; night, 24°; rain

7 September, sun

	760 mmHg		84%
	6.1 m/s		+27

7 September, Sunday. day, 25°; night, 24°; rain

8 September, mon

	760 mmHg		84%
	6.3 m/s		+26

8 September, Monday. day, 25°; night, 24°; rain

9 September, tue

	760 mmHg		84%
	6.5 m/s		+26

9 September, Tuesday. day, 25°; night, 24°; rain

10 September, wed

	760 mmHg		84%
	5.9 m/s		+26

10 September, Wednesday. day, 25°; night, 24°; rain

11 September, thu

	760 mmHg		84%
	6.3 m/s		+26

11 September, Thursday. day, 25°; night, 25°; rain

12 September, fri

	760 mmHg		84%
	6.5 m/s		+26

12 September, Friday. day, 25°; night, 25°; rain

13 September, sat

	760 mmHg		84%
	6.5 m/s		+27

13 September, Saturday. day, 25°; night, 24°; partly cloudy

14 September, sun

	760 mmHg		84%
	6 m/s		+27

14 September, Sunday. day, 25°; night, 25°; partly cloudy

15 September, mon

	760 mmHg		84%
	6.2 m/s		+26

15 September, Monday. day, 25°; night, 25°; rain

16 September, tue

	760 mmHg		84%
	6.2 m/s		+27

16 September, Tuesday. day, 25°; night, 24°; rain

17 September, wed

	760 mmHg		85%
	6.2 m/s		+27

17 September, Wednesday. day, 25°; night, 24°; rain

18 September, thu

	760 mmHg		84%
	6.4 m/s		+27

18 September, Thursday. day, 25°; night, 24°; rain

19 September, fri

	760 mmHg		84%
	6.3 m/s		+27

19 September, Friday. day, 25°; night, 25°; rain

20 September, sat

	760 mmHg		84%
	6 m/s		+27

20 September, Saturday. day, 25°; night, 25°; rain

21 September, sun

	759 mmHg		84%
	6.2 m/s		+27

21 September, Sunday. day, 25°; night, 25°; rain

22 September, mon

	759 mmHg		84%
	5.9 m/s		+27

22 September, Monday. day, 25°; night, 25°; rain

23 September, tue

	760 mmHg		85%
	5.8 m/s		+27

23 September, Tuesday. day, 25°; night, 25°; rain

24 September, wed

	760 mmHg		85%
	5.8 m/s		+27

24 September, Wednesday. day, 25°; night, 25°; rain

25 September, thu

	760 mmHg		84%
	5.5 m/s		+27

25 September, Thursday. day, 26°; night, 25°; rain

26 September, fri

	759 mmHg		85%
	5.9 m/s		+27

26 September, Friday. day, 25°; night, 25°; rain

27 September, sat

	759 mmHg		84%
	6 m/s		+27

27 September, Saturday. day, 26°; night, 25°; rain

28 September, sun

	759 mmHg		84%
	5.9 m/s		+27

28 September, Sunday. day, 25°; night, 25°; rain

29 September, mon

	759 mmHg		84%
	6 m/s		+27

29 September, Monday. day, 26°; night, 25°; rain

30 September, tue

	759 mmHg		84%
	5.8 m/s		+27

30 September, Tuesday. day, 26°; night, 25°; rain

1 October, wed

	759 mmHg		84%
	5.7 m/s		+27

1 October, Wednesday. day, 26°; night, 25°; rain

2 October, thu

	759 mmHg		84%
	5.6 m/s		+27

2 October, Thursday. day, 26°; night, 25°; rain

3 October, fri

	759 mmHg		85%
	5.6 m/s		+27

3 October, Friday. day, 26°; night, 25°; rain

4 October, sat

	759 mmHg		85%
	5.8 m/s		+27

4 October, Saturday. day, 26°; night, 25°; rain

Average data for 10 years

Principe September

0

sunny days

25

days with precipitation

16

cloudy days

0 sunny days; 25 days with precipitation; 16 cloudy days;

84

%

air humidity

5

m/s

WindSW

182

mm of precipitation

(10% of annual average)

+27

°C

Water temperature

air humidity 84%; 182 millimeters of precipitation (10% of annual average); Wind south-westerly 5 Meters per second; Water temperature +27°

Weather graphs for September

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

SW

SW

SW

SW

SW

SW

SW

SW

SW

SW

SW

SW

SW

SW

SW

SW

SW

SW

SW

SW

SW

SW

SW

SW

SW

SW

SW

SW

SW

SW

1

Average data for 10 years

2

3

4

5

6

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8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

Daytime temperature

Night-time temperature

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

In September, the weather in Principe is typically warm. Average daily high temperature in September is about 25 degrees above zero. On average, Principe has 25 rainy and 5 partly cloudy days in September. The rains are usually heavy. September as well as January, February, March, and April is considered the most uncomfortable time to visit Principe.

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