Weather in Atenas in september 2025

The weather in Atenas in the month of september comes from statistical datas on the last years. You can view the weather statistics for all the month, but also by clicking on the tabs for the beginning, the middle and the end of the month.

Average weather throughout september

very bad weather UV index: 6

Weather at 6am
68°F

Fog

23%

Clear/Sunny

21%

Moderate rain at times

20%

Weather at 12pm
81°F

Heavy rain

28%

Partly Cloudy

25%

Clear/Sunny

6%

Weather at 6pm
72°F

Moderate rain at times

12%

Cloudy

3%

Partly Cloudy

2%

Weather at 3am
68°F

Fog

32%

Moderate rain at times

24%

Partly Cloudy

17%

Clear/Sunny

17%



Evolution of daily average temperature and precipitation in Atenas in september

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


The climate of Atenas in september is very bad

The weather in september in Atenas is wet (with 27.9in of precipitation over 28 days). The weather is worst than the previous month since in august there is an average of 24.8in of precipitation over 24 days.

The climate good in that locality september. Temperatures are up to 81°F. On average, the recorded minimum temperature is 68°F. Thus, the mean temperature average on this month of september in Atenas is 74°F. Note that seasonal normals in contrast with those observed in Atenas in september with a maximum record of 86°F in 2016 and a minimum record of 63°F in 2009.

On average, in Atenas, the days of september last 12:10. The sun rises at 05:28 and sunset is at 17:38.



September: another location in Costa Rica?

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

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 Atenas.

more information about Costa Rica's weather in september


Seasonal average climate and temperature of Atenas in september

Check below seasonal norms These statistics are compiled from the weather statements of the last years of september.

September
Outside temperature
Average temperature 74°F
Highest temperature 81°F
Lowest temperature 68°F
Highest record temperature 86°F
(2016)
Lowest record temperature 63°F
(2009)
Number of days at +86°F 0 day(s)
(0%)
Number of days at +65°F 30 day(s)
(100%)
Wind
Wind speed 6km/h
Wind temperature 68°F
Precipitation (rainfall)
Rainfall 27.9in
Number of days with rainfall 28 day(s)
(93%)
Record daily rainfall 5.4in
(2009)
Other climate data
Humidity 93%
Visibility 7.26km
Cloud cover 50%
UV index 6
Daily sunshine hours 11
Sunrise and sunset
Time of sunrise 05:28
Time of sunset 17:38
Length of day 12:10
Our opinion about the weather in september
Our opinion at whereandwhen.net very bad



How was the weather last september?

Here is the day by day recorded weather in Atenas in september 2024:

01-09-2024
Light rain shower
67°F to 77°F
02-09-2024
Light rain shower
65°F to 76°F
03-09-2024
Light rain shower
67°F to 76°F
04-09-2024
Light rain shower
67°F to 77°F
05-09-2024
Patchy rain nearby
67°F to 81°F
06-09-2024
Light rain shower
68°F to 76°F
07-09-2024
Light rain shower
68°F to 79°F
08-09-2024
Patchy rain nearby
67°F to 76°F
09-09-2024
Patchy rain nearby
68°F to 76°F
10-09-2024
Light rain shower
67°F to 79°F
11-09-2024
Light rain shower
68°F to 77°F
12-09-2024
Light rain shower
68°F to 77°F
13-09-2024
Patchy rain nearby
67°F to 81°F
14-09-2024
Moderate or heavy rain shower
67°F to 77°F
15-09-2024
Patchy rain nearby
67°F to 83°F
16-09-2024
Patchy rain nearby
68°F to 79°F
17-09-2024
Light rain shower
68°F to 79°F
18-09-2024
Moderate or heavy rain shower
68°F to 79°F
19-09-2024
Light rain shower
68°F to 76°F
20-09-2024
Light rain shower
68°F to 76°F
21-09-2024
Patchy rain nearby
67°F to 72°F
22-09-2024
Light rain shower
67°F to 70°F
23-09-2024
Light rain shower
67°F to 74°F
24-09-2024
Light rain shower
67°F to 72°F
25-09-2024
Light rain shower
67°F to 68°F
26-09-2024
Patchy rain nearby
65°F to 79°F
27-09-2024
Light rain shower
67°F to 76°F
28-09-2024
Patchy rain nearby
65°F to 79°F
29-09-2024
Light rain shower
67°F to 74°F
30-09-2024
Light rain shower
67°F to 74°F

Map: other cities in Costa Rica in september

Cities near Atenas:

Naranjo in septembervery bad weather
Desamparados in septembervery bad weather
San Ramon in septembervery bad weather
Orotina in septembervery bad weather
Alajuela in septembervery bad weather
Escazu in septembervery bad weather
Heredia in septembervery bad weather
Volcán Poás in septembervery bad weather
Tejar in septembervery bad weather
Esparza in septembervery bad weather
San José in septembervery bad weather
Parque Nacional Carara in septembertolerable weather
Costa Rica in september: See full list of cities

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

Legend: Atenas perfect weather good tolerable bad very bad


Weather data for Atenas in september:

Weather data for Atenas for september are derived from an average of the weather forecast since 2009 in Atenas. There is a margin of error and these forecasts are to be considered as general information only. The weather in Atenas 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 Atenas.


Weather in august in Atenas
Weather in october in Atenas
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