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September weather forecast in Puerto Viejo

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

	748 mmHg		85%
	2 m/s		+30

31 August, Sunday. day, 28°; night, 22°; partly cloudy

1 September, mon

	748 mmHg		85%
	2.09 m/s		+30

1 September, Monday. day, 28°; night, 22°; rain

2 September, tue

	748 mmHg		85%
	2.09 m/s		+30

2 September, Tuesday. day, 28°; night, 22°; rain

3 September, wed

	748 mmHg		86%
	2 m/s		+30

3 September, Wednesday. day, 27°; night, 22°; rain

4 September, thu

	748 mmHg		86%
	2 m/s		+30

4 September, Thursday. day, 28°; night, 22°; rain

5 September, fri

	748 mmHg		86%
	2 m/s		+29

5 September, Friday. day, 27°; night, 22°; rain

6 September, sat

	748 mmHg		86%
	2.09 m/s		+30

6 September, Saturday. day, 28°; night, 22°; rain

7 September, sun

	748 mmHg		86%
	2 m/s		+30

7 September, Sunday. day, 28°; night, 22°; rain

8 September, mon

	747 mmHg		86%
	1.9 m/s		+30

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

9 September, tue

	747 mmHg		86%
	2 m/s		+30

9 September, Tuesday. day, 28°; night, 22°; rain

10 September, wed

	748 mmHg		85%
	2.09 m/s		+30

10 September, Wednesday. day, 27°; night, 22°; rain

11 September, thu

	748 mmHg		85%
	2 m/s		+30

11 September, Thursday. day, 28°; night, 22°; rain

12 September, fri

	747 mmHg		86%
	2 m/s		+30

12 September, Friday. day, 27°; night, 22°; rain

13 September, sat

	747 mmHg		86%
	2.09 m/s		+30

13 September, Saturday. day, 28°; night, 22°; rain

14 September, sun

	747 mmHg		86%
	2.09 m/s		+30

14 September, Sunday. day, 28°; night, 22°; rain

15 September, mon

	748 mmHg		86%
	2.09 m/s		+30

15 September, Monday. day, 28°; night, 22°; rain

16 September, tue

	748 mmHg		86%
	2.09 m/s		+30

16 September, Tuesday. day, 28°; night, 22°; rain

17 September, wed

	748 mmHg		87%
	2.09 m/s		+30

17 September, Wednesday. day, 27°; night, 22°; rain

18 September, thu

	748 mmHg		86%
	2 m/s		+30

18 September, Thursday. day, 28°; night, 22°; rain

19 September, fri

	747 mmHg		86%
	2 m/s		+30

19 September, Friday. day, 28°; night, 22°; rain

20 September, sat

	747 mmHg		87%
	2.09 m/s		+30

20 September, Saturday. day, 28°; night, 22°; rain

21 September, sun

	747 mmHg		86%
	2 m/s		+30

21 September, Sunday. day, 28°; night, 22°; rain

22 September, mon

	747 mmHg		86%
	2 m/s		+30

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

23 September, tue

	747 mmHg		86%
	2.09 m/s		+30

23 September, Tuesday. day, 28°; night, 22°; partly cloudy

24 September, wed

	747 mmHg		87%
	2 m/s		+30

24 September, Wednesday. day, 28°; night, 22°; rain

25 September, thu

	747 mmHg		86%
	2.09 m/s		+30

25 September, Thursday. day, 27°; night, 22°; rain

26 September, fri

	747 mmHg		86%
	2.09 m/s		+30

26 September, Friday. day, 27°; night, 22°; rain

27 September, sat

	747 mmHg		86%
	2.09 m/s		+30

27 September, Saturday. day, 28°; night, 22°; rain

28 September, sun

	747 mmHg		86%
	2 m/s		+30

28 September, Sunday. day, 27°; night, 22°; rain

29 September, mon

	747 mmHg		86%
	1.9 m/s		+29

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

30 September, tue

	747 mmHg		86%
	2 m/s		+30

30 September, Tuesday. day, 27°; night, 22°; rain

1 October, wed

	747 mmHg		87%
	2.09 m/s		+30

1 October, Wednesday. day, 28°; night, 22°; rain

2 October, thu

	747 mmHg		87%
	2.09 m/s		+29

2 October, Thursday. day, 27°; night, 22°; rain

3 October, fri

	747 mmHg		88%
	1.9 m/s		+29

3 October, Friday. day, 27°; night, 22°; rain

4 October, sat

	747 mmHg		86%
	2 m/s		+29

4 October, Saturday. day, 28°; night, 22°; rain

Average data for 10 years

Puerto Viejo September

0

sunny days

29

days with precipitation

21

cloudy days

0 sunny days; 29 days with precipitation; 21 cloudy days;

86

%

air humidity

1.1

m/s

WindS

227

mm of precipitation

(8% of annual average)

+30

°C

Water temperature

air humidity 86%; 227 millimeters of precipitation (8% of annual average); Wind southerly 1.1 Meters per second; Water temperature +30°

Weather graphs for September

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

S

S

S

S

S

S

S

S

S

S

S

S

S

S

S

S

S

S

S

S

S

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

San Jose
Panama
Juigalpa
Bocas del Toro
Granada
Liberia
La Fortuna
San Andres
Puntarenas

Cities with similar weather in September

Pattaya
Nha Trang
Sharm-El-Sheikh
Bangkok
Miami
Punta Cana
Singapore
Cancun
Hong Kong

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

September in Puerto Viejo is the warmest month of the year. In September, the weather in Puerto Viejo is typically hot. Average daily high temperature in September is about 28 degrees above zero. On average, Puerto Viejo has 29 rainy and 1 partly cloudy day in September. The rains are usually heavy. September as well as April, May, June, and July is considered the most uncomfortable time to visit Puerto Viejo.

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