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September weather forecast in Nicoya

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

	738 mmHg		87%
	2.7 m/s		+29

31 August, Sunday. day, 31°; night, 23°; rain

1 September, mon

	738 mmHg		87%
	2.8 m/s		+29

1 September, Monday. day, 31°; night, 23°; rain

2 September, tue

	738 mmHg		87%
	2.9 m/s		+29

2 September, Tuesday. day, 31°; night, 23°; rain

3 September, wed

	738 mmHg		88%
	2.9 m/s		+29

3 September, Wednesday. day, 30°; night, 23°; rain

4 September, thu

	738 mmHg		88%
	2.6 m/s		+29

4 September, Thursday. day, 30°; night, 23°; rain

5 September, fri

	738 mmHg		88%
	2.7 m/s		+29

5 September, Friday. day, 30°; night, 23°; rain

6 September, sat

	738 mmHg		88%
	2.8 m/s		+29

6 September, Saturday. day, 30°; night, 23°; rain

7 September, sun

	738 mmHg		87%
	2.9 m/s		+29

7 September, Sunday. day, 31°; night, 23°; partly cloudy

8 September, mon

	738 mmHg		88%
	2.8 m/s		+29

8 September, Monday. day, 31°; night, 23°; rain

9 September, tue

	738 mmHg		88%
	2.6 m/s		+29

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

10 September, wed

	738 mmHg		88%
	2.7 m/s		+29

10 September, Wednesday. day, 30°; night, 23°; rain

11 September, thu

	738 mmHg		88%
	2.9 m/s		+29

11 September, Thursday. day, 30°; night, 23°; rain

12 September, fri

	738 mmHg		88%
	3 m/s		+29

12 September, Friday. day, 30°; night, 23°; rain

13 September, sat

	738 mmHg		88%
	2.6 m/s		+29

13 September, Saturday. day, 30°; night, 23°; rain

14 September, sun

	738 mmHg		89%
	2.8 m/s		+28

14 September, Sunday. day, 30°; night, 23°; rain

15 September, mon

	738 mmHg		88%
	2.8 m/s		+28

15 September, Monday. day, 30°; night, 23°; rain

16 September, tue

	738 mmHg		88%
	2.8 m/s		+28

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

17 September, wed

	738 mmHg		88%
	2.8 m/s		+28

17 September, Wednesday. day, 30°; night, 23°; rain

18 September, thu

	738 mmHg		88%
	2.7 m/s		+28

18 September, Thursday. day, 30°; night, 23°; rain

19 September, fri

	738 mmHg		89%
	2.6 m/s		+28

19 September, Friday. day, 30°; night, 23°; rain

20 September, sat

	738 mmHg		89%
	2.9 m/s		+29

20 September, Saturday. day, 30°; night, 23°; rain

21 September, sun

	738 mmHg		89%
	2.8 m/s		+28

21 September, Sunday. day, 30°; night, 23°; rain

22 September, mon

	738 mmHg		89%
	2.7 m/s		+29

22 September, Monday. day, 30°; night, 23°; rain

23 September, tue

	738 mmHg		88%
	2.7 m/s		+28

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

24 September, wed

	738 mmHg		89%
	2.9 m/s		+28

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

25 September, thu

	738 mmHg		89%
	2.8 m/s		+28

25 September, Thursday. day, 30°; night, 23°; rain

26 September, fri

	738 mmHg		89%
	2.9 m/s		+28

26 September, Friday. day, 30°; night, 23°; rain

27 September, sat

	738 mmHg		89%
	2.6 m/s		+28

27 September, Saturday. day, 30°; night, 23°; rain

28 September, sun

	738 mmHg		89%
	2.6 m/s		+28

28 September, Sunday. day, 30°; night, 22°; rain

29 September, mon

	738 mmHg		89%
	2.8 m/s		+28

29 September, Monday. day, 30°; night, 23°; rain

30 September, tue

	738 mmHg		89%
	2.9 m/s		+28

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

1 October, wed

	738 mmHg		89%
	2.8 m/s		+28

1 October, Wednesday. day, 30°; night, 23°; rain

2 October, thu

	738 mmHg		89%
	3 m/s		+28

2 October, Thursday. day, 30°; night, 23°; rain

3 October, fri

	738 mmHg		89%
	3 m/s		+28

3 October, Friday. day, 30°; night, 23°; rain

4 October, sat

	738 mmHg		88%
	3.3 m/s		+28

4 October, Saturday. day, 30°; night, 22°; rain

Average data for 10 years

Nicoya September

0

sunny days

29

days with precipitation

23

cloudy days

0 sunny days; 29 days with precipitation; 23 cloudy days;

88

%

air humidity

1.3

m/s

WindSE

355

mm of precipitation

(17% of annual average)

+28

°C

Water temperature

air humidity 88%; 355 millimeters of precipitation (17% of annual average); Wind south-easterly 1.3 Meters per second; Water temperature +28°

Weather graphs for September

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

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1

Average data for 10 years

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30

Daytime temperature

Night-time temperature

Cities near you

San Jose
Managua
Juigalpa
Bocas del Toro
Granada
Liberia
La Fortuna
Leon
Puntarenas

Cities with similar weather in September

Santo Domingo
Varadero
Phan Thiet
Samui
Havana
Krabi
Ko Chang
Puerto Plata
Panaji

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

September in Nicoya is the rainiest month of the year. In September, the weather in Nicoya is typically hot. Average daily high temperature in September is about 30 degrees above zero. On average, Nicoya has 29 rainy and 1 partly cloudy day in September. The rains are usually heavy. September as well as May, June, July, and August is considered the most uncomfortable time to visit Nicoya.

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