Liberia (Guanacaste) in september: average Weather, Temperature and Climate
Weather in Liberia (Guanacaste) in september 2025
The weather in Liberia (Guanacaste) in the month of 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
Moderate rain at times
33% of time
22%
21%
18%
Weather at 12pm
88°F
Moderate rain at times
39% of time
28%
19%
14%
Weather at 6pm
77°F
Heavy rain
68% of time
20%
5%
4%
Weather at 3am
76°F
36%
20%
20%
18%
Evolution of daily average temperature and precipitation in Liberia (Guanacaste) in september
These charts show the evolution of average minimum/maximum temperatures as well as average daily precipitation volume in Liberia (Guanacaste) in september.
The climate of Liberia (Guanacaste) in september is bad
The weather in september in Liberia (Guanacaste) is wet (with 17.8in of precipitation over 24 days). The weather is worst than the previous month since in august there is an average of 14.1in of rainfall over 18 days.
The climate is very hot there in september. The thermometer averaged maximum of 88°F. The minimum is 76°F. Thus, the mean temperature average on this month of september in Liberia (Guanacaste) is 81°F. These temperatures are far removed from those records observed in Liberia (Guanacaste) in the month of september with a maximum record of 94°F in 2015 and a minimum record of 72°F in 2009. You can expect to have about 20 days with temperatures above 86°F, or 67 of time.
Day length in Liberia (Guanacaste) in september is 12:10. The sun rises at 05:32 and sets at 17:42.
September: another location in Costa Rica?
If you want to go to Costa Rica in september, there are destinations with better weather than Liberia (Guanacaste):
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 Liberia (Guanacaste).
Seasonal average climate and temperature of Liberia (Guanacaste) in september
Check below seasonal norms These statistics are compiled from the weather statements earlier years of the month of september.
| September | |||||
| Outside temperature | |||||
| Average temperature | 81°F | ||||
| Highest temperature | 88°F | ||||
| Lowest temperature | 76°F | ||||
| Highest record temperature | 94°F (2015) | ||||
| Lowest record temperature | 72°F (2009) | ||||
| Number of days at +86°F | 20 day(s) (67%) | ||||
| Number of days at +65°F | 30 day(s) (100%) | ||||
| Wind | |||||
| Wind speed | 11km/h | ||||
| Wind temperature | 76°F | ||||
| Precipitation (rainfall) | |||||
| Rainfall | 17.8in | ||||
| Number of days with rainfall | 24 day(s) (80%) | ||||
| Record daily rainfall | 3.1in (2021) | ||||
| Other climate data | |||||
| Humidity | 93% | ||||
| Visibility | 8.16km | ||||
| Cloud cover | 43% | ||||
| UV index | 7 | ||||
| Daily sunshine hours | 11 | ||||
| Sunrise and sunset | |||||
| Time of sunrise | 05:32 | ||||
| Time of sunset | 17:42 | ||||
| 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 Liberia (Guanacaste) in september 2024:
74°F to 83°F
74°F to 81°F
74°F to 83°F
74°F to 83°F
76°F to 86°F
74°F to 81°F
74°F to 81°F
72°F to 76°F
74°F to 83°F
74°F to 86°F
76°F to 85°F
76°F to 85°F
76°F to 85°F
76°F to 86°F
76°F to 86°F
76°F to 86°F
76°F to 85°F
76°F to 85°F
76°F to 85°F
74°F to 79°F
74°F to 81°F
72°F to 77°F
72°F to 81°F
72°F to 79°F
72°F to 74°F
72°F to 83°F
70°F to 79°F
72°F to 81°F
74°F to 81°F
74°F to 81°F
Map: other cities in Costa Rica in september
Cities near Liberia (Guanacaste):
| Playa Arenillas in september | tolerable weather |
| Parque Nacional Rincón de la Vieja in september | bad weather |
| Playa Hermosa in september | tolerable weather |
| Belen in september | tolerable weather |
| Parque Nacional Palo Verde in september | very bad weather |
| Parque Nacional Santa Rosa in september | bad weather |
| Parque Nacional Guanacaste in september | bad weather |
| Canas in september | very bad weather |
| Playa Flamingo (Guanacaste) in september | tolerable weather |
| Santa Cruz in september | very bad weather |
| Parque Nacional Volcán Tenorio in september | bad weather |
| Parque Nacional Barra Honda in september | very bad weather |
Click over cities on the map for information about the weather in september.
Liberia (Guanacaste)
perfect weather
good
tolerable
bad
very bad
Weather data for Liberia (Guanacaste) in september:
Weather data for Liberia (Guanacaste) for september are derived from an average of the weather forecast since 2009 in Liberia (Guanacaste). There is a margin of error and these forecasts are to be considered as general information only. The weather in Liberia (Guanacaste) 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 Liberia (Guanacaste).