Weather in Boca San Carlos in september 2025

The weather in Boca San Carlos in september comes from statistical datas on the past years. You can view the weather statistics for the whole month, but also by clicking on the tabs for the beginning, the middle and the end of the month.

Average weather throughout september

bad weather UV index: 7

Weather at 6am
76°F

Partly Cloudy

25%

Moderate rain at times

23%

Clear/Sunny

16%

Weather at 12pm
86°F

Heavy rain

21%

Partly Cloudy

17%

Clear/Sunny

13%

Weather at 6pm
81°F

Moderate rain at times

23%

Clear/Sunny

9%

Partly Cloudy

7%

Weather at 3am
77°F

Fog

50%

Moderate rain at times

22%

Partly Cloudy

14%

Clear/Sunny

9%



Evolution of daily average temperature and precipitation in Boca San Carlos in september

These charts show the evolution of average minimum/maximum temperatures as well as average daily precipitation volume in Boca San Carlos in september.


The climate of Boca San Carlos in september is bad

In september in Boca San Carlos, the climate is wet (with 13.9in of precipitation over 22 days). It should be noted an improvement from the previous month since in august it receives an average of 16in of precipitation over 23 days.

The climate good in that locality this month. The thermometer averaged maximum of 86°F. On average, the recorded minimum temperature is 76°F. Thus, the mean temperature average on this month of september in Boca San Carlos is 81°F. Note that seasonal normals in contrast with those observed in Boca San Carlos in september with a maximum record of 94°F in 2015 and a minimum record of 68°F in 2009. You can expect to have about 15 days with temperatures above 86°F, or 50 of the month.

Day length in Boca San Carlos in september is 12:10. Sunrise is at 05:27 and sets at 17:37.

With a correct climate, september is okay (but not the best) to go in this locality in Costa Rica.



September: another location in Costa Rica?

If you want to go to Costa Rica in september, there are destinations with better weather than Boca San Carlos:

In september, Puerto Limón, Tortuguero, Manzanillo, Bananito Sur, Parc international La Amistad and Parismina have good weather.

Finally, La Cruz, Tamarindo, Esterillos, Parque Nacional Carara, Playa Arenillas and Playa Flamingo (Guanacaste) have a tolerable climate, but better than Boca San Carlos.

more information about Costa Rica's weather in september


Seasonal average climate and temperature of Boca San Carlos in september

Check below seasonal norms These datas are compiled from the weather statements earlier years of the month of september.

September
Outside temperature
Average temperature 81°F
Highest temperature 86°F
Lowest temperature 76°F
Highest record temperature 94°F
(2015)
Lowest record temperature 68°F
(2009)
Number of days at +86°F 15 day(s)
(50%)
Number of days at +65°F 30 day(s)
(100%)
Wind
Wind speed 9km/h
Wind temperature 76°F
Precipitation (rainfall)
Rainfall 13.9in
Number of days with rainfall 22 day(s)
(74%)
Record daily rainfall 2.5in
(2021)
Other climate data
Humidity 95%
Visibility 7.48km
Cloud cover 44%
UV index 7
Daily sunshine hours 11
Sunrise and sunset
Time of sunrise 05:27
Time of sunset 17:37
Length of day 12:10
Our opinion about the weather in september
Our opinion at whereandwhen.net bad



How was the weather last september?

Here is the day by day recorded weather in Boca San Carlos in september 2024:

01-09-2024
Partly Cloudy
70°F to 81°F
02-09-2024
Patchy rain nearby
70°F to 85°F
03-09-2024
Light rain shower
74°F to 86°F
04-09-2024
Patchy rain nearby
79°F to 88°F
05-09-2024
Light rain shower
81°F to 90°F
06-09-2024
Patchy rain nearby
76°F to 86°F
07-09-2024
Light rain shower
70°F to 88°F
08-09-2024
Partly Cloudy
68°F to 83°F
09-09-2024
Light rain shower
76°F to 85°F
10-09-2024
Light rain shower
81°F to 85°F
11-09-2024
Light rain shower
79°F to 85°F
12-09-2024
Light rain shower
83°F to 86°F
13-09-2024
Light rain shower
79°F to 88°F
14-09-2024
Partly Cloudy
77°F to 90°F
15-09-2024
Patchy rain nearby
81°F to 86°F
16-09-2024
Moderate or heavy rain shower
79°F to 85°F
17-09-2024
Light rain shower
81°F to 85°F
18-09-2024
Light rain shower
81°F to 86°F
19-09-2024
Light rain shower
77°F to 85°F
20-09-2024
Patchy light drizzle
74°F to 83°F
21-09-2024
Patchy rain nearby
72°F to 81°F
22-09-2024
Fog
70°F to 81°F
23-09-2024
Light rain shower
70°F to 85°F
24-09-2024
Partly Cloudy
70°F to 86°F
25-09-2024
Light rain shower
70°F to 79°F
26-09-2024
Partly Cloudy
68°F to 88°F
27-09-2024
Cloudy
74°F to 81°F
28-09-2024
Patchy rain nearby
76°F to 90°F
29-09-2024
Patchy rain nearby
76°F to 88°F
30-09-2024
Light rain shower
77°F to 86°F

Map: other cities in Costa Rica in september

Cities near Boca San Carlos:

Quesada in septembervery bad weather
Parque Nacional Juan Castro Blanco in septembervery bad weather
La Fortuna in septemberbad weather
Isla Calero in septemberbad weather
Volcán Poás in septembervery bad weather
Volcán Arenal in septemberbad weather
Parque Nacional Braulio Carrillo in septembervery bad weather
Guapiles in septembergood weather
Naranjo in septembervery bad weather
Tortuguero in septembergood weather
San Ramon in septembervery bad weather
Guacimo in septembergood weather
Costa Rica in september: See full list of cities

Click over cities on the map for information about the weather in september.

Legend: Boca San Carlos perfect weather good tolerable bad very bad


Weather data for Boca San Carlos in september:

Weather data for Boca San Carlos for september are derived from an average of the weather forecast since 2009 in Boca San Carlos. There is a margin of error and these forecasts are to be considered as general information only. The weather in Boca San Carlos can vary slightly from year to year, but this data should limit surprises. So you can pack your bags or check for the best time in year to go to Boca San Carlos.


Weather in august in Boca San Carlos
Weather in october in Boca San Carlos
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