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September weather forecast in Bissau

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

	758 mmHg		87%
	4.1 m/s		+28

31 August, Sunday. day, 29°; night, 24°; rain

1 September, mon

	758 mmHg		87%
	3.6 m/s		+28

1 September, Monday. day, 29°; night, 24°; rain

2 September, tue

	758 mmHg		87%
	3.8 m/s		+28

2 September, Tuesday. day, 30°; night, 24°; rain

3 September, wed

	758 mmHg		87%
	4.1 m/s		+28

3 September, Wednesday. day, 29°; night, 24°; rain

4 September, thu

	758 mmHg		86%
	4 m/s		+28

4 September, Thursday. day, 30°; night, 24°; rain

5 September, fri

	758 mmHg		87%
	3.9 m/s		+28

5 September, Friday. day, 30°; night, 24°; rain

6 September, sat

	758 mmHg		87%
	4 m/s		+28

6 September, Saturday. day, 29°; night, 24°; rain

7 September, sun

	758 mmHg		88%
	3.9 m/s		+28

7 September, Sunday. day, 29°; night, 24°; rain

8 September, mon

	758 mmHg		87%
	3.8 m/s		+29

8 September, Monday. day, 30°; night, 24°; rain

9 September, tue

	758 mmHg		86%
	3.7 m/s		+29

9 September, Tuesday. day, 30°; night, 24°; rain

10 September, wed

	758 mmHg		86%
	3.6 m/s		+29

10 September, Wednesday. day, 30°; night, 24°; rain

11 September, thu

	758 mmHg		87%
	3.5 m/s		+28

11 September, Thursday. day, 30°; night, 24°; rain

12 September, fri

	758 mmHg		86%
	3.4 m/s		+29

12 September, Friday. day, 30°; night, 24°; rain

13 September, sat

	758 mmHg		86%
	3.4 m/s		+28

13 September, Saturday. day, 30°; night, 24°; rain

14 September, sun

	758 mmHg		86%
	3.3 m/s		+29

14 September, Sunday. day, 30°; night, 24°; rain

15 September, mon

	759 mmHg		85%
	3.4 m/s		+28

15 September, Monday. day, 30°; night, 24°; rain

16 September, tue

	758 mmHg		86%
	3.1 m/s		+29

16 September, Tuesday. day, 30°; night, 24°; rain

17 September, wed

	758 mmHg		86%
	3.4 m/s		+29

17 September, Wednesday. day, 30°; night, 24°; rain

18 September, thu

	758 mmHg		86%
	3.4 m/s		+29

18 September, Thursday. day, 30°; night, 24°; rain

19 September, fri

	758 mmHg		87%
	3 m/s		+29

19 September, Friday. day, 30°; night, 24°; rain

20 September, sat

	758 mmHg		86%
	3.3 m/s		+29

20 September, Saturday. day, 30°; night, 24°; rain

21 September, sun

	758 mmHg		85%
	3.4 m/s		+29

21 September, Sunday. day, 31°; night, 24°; rain

22 September, mon

	758 mmHg		86%
	3.1 m/s		+29

22 September, Monday. day, 30°; night, 24°; rain

23 September, tue

	758 mmHg		85%
	3.3 m/s		+29

23 September, Tuesday. day, 30°; night, 24°; rain

24 September, wed

	758 mmHg		85%
	3.1 m/s		+29

24 September, Wednesday. day, 31°; night, 25°; partly cloudy

25 September, thu

	758 mmHg		86%
	2.9 m/s		+29

25 September, Thursday. day, 31°; night, 24°; rain

26 September, fri

	758 mmHg		86%
	3.1 m/s		+29

26 September, Friday. day, 30°; night, 24°; rain

27 September, sat

	758 mmHg		85%
	2.9 m/s		+29

27 September, Saturday. day, 31°; night, 24°; rain

28 September, sun

	758 mmHg		85%
	3 m/s		+29

28 September, Sunday. day, 31°; night, 24°; rain

29 September, mon

	758 mmHg		85%
	2.9 m/s		+29

29 September, Monday. day, 31°; night, 24°; clear

30 September, tue

	758 mmHg		85%
	2.9 m/s		+29

30 September, Tuesday. day, 31°; night, 24°; clear

1 October, wed

	758 mmHg		85%
	3 m/s		+29

1 October, Wednesday. day, 31°; night, 24°; rain

2 October, thu

	758 mmHg		85%
	3 m/s		+30

2 October, Thursday. day, 31°; night, 25°; rain

3 October, fri

	758 mmHg		84%
	2.9 m/s		+29

3 October, Friday. day, 31°; night, 24°; rain

4 October, sat

	758 mmHg		85%
	2.8 m/s		+30

4 October, Saturday. day, 31°; night, 25°; rain

Average data for 10 years

Bissau September

2

sunny days

27

days with precipitation

17

cloudy days

2 sunny days; 27 days with precipitation; 17 cloudy days;

86

%

air humidity

2

m/s

WindSW

317

mm of precipitation

(24% of annual average)

+29

°C

Water temperature

air humidity 86%; 317 millimeters of precipitation (24% of annual average); Wind south-westerly 2 Meters per second; Water temperature +29°

Weather graphs for September

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

SW

SW

SW

SW

SW

SW

SW

S

SW

SW

SW

SW

SW

S

SW

SW

S

S

S

S

SW

S

S

S

S

S

S

S

S

S

1

Average data for 10 years

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

Daytime temperature

Night-time temperature

Cities near you

Banjul
Kaolack
Dakar
Nouakchott
Conakry
Freetown
Kayes
Rosso
Labe

Cities with similar weather in September

Pattaya
Bangkok
Santo Domingo
Varadero
Punta Cana
Havana
Ko Chang
Mumbai
Panaji

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

In September, the weather in Bissau is typically hot. Average daily high temperature in September is about 30 degrees above zero. On average, Bissau has 27 rainy, 2 sunny, and 1 partly cloudy day in September. The rains are usually heavy. September as well as July, August, and October is considered the most uncomfortable time to visit Bissau.

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