Jaco in september: average Weather, Temperature and Climate
Weather in Jaco in september 2025
The weather in Jaco in september comes from statistical datas on the past years. You can view the weather statistics for all the month, but also navigating through the tabs for the beginning, the middle and the end of the month.
Average weather throughout september
tolerable weather UV index: 7
Weather at 6am
81°F
Partly Cloudy
36% of time
26%
23%
14%
Weather at 12pm
85°F
Clear/Sunny
42% of time
32%
19%
7%
Weather at 6pm
81°F
Heavy rain
33% of time
29%
27%
7%
Weather at 3am
79°F
47%
24%
14%
14%
Evolution of daily average temperature and precipitation in Jaco in september
These charts show the evolution of average minimum/maximum temperatures as well as average daily precipitation volume in Jaco in september.
The climate of Jaco in september is tolerable
the weather in Jaco in september is wet (with 14.5in of rainfall over 19 days). The weather's not getting better compared to the previous month since in august there is an average of 16.9in of rainfall over 17 days.
The climate good around this city this month. Temperatures are up to 85°F. The seasonal minimum is 81°F. Thus, the mean temperature average on this month of september in Jaco is 83°F. Note that seasonal normals in contrast with those observed in Jaco in the month of september with a maximum record of 88°F in 2009 and a minimum record of 74°F in 2009. You can expect to have about 9 days with temperatures over 86°F, or 30 of the month.
On average, in Jaco, the days of september last 12:10. Sunrise is at 05:29 and sets at 17:39.
September: another location in Costa Rica?
If you want to go to Costa Rica in september, there are destinations with better weather than Jaco:
In september, Puerto Limón, Tortuguero, Manzanillo, Bananito Sur, Parc international La Amistad and Parismina have good weather.
Seasonal average climate and temperature of Jaco in september
Check below seasonal norms These datas are generated from the weather statements of the last years of september.
| September | |||||
| Outside temperature | |||||
| Average temperature | 83°F | ||||
| Highest temperature | 85°F | ||||
| Lowest temperature | 81°F | ||||
| Highest record temperature | 88°F (2009) | ||||
| Lowest record temperature | 74°F (2009) | ||||
| Number of days at +86°F | 9 day(s) (30%) | ||||
| Number of days at +65°F | 30 day(s) (100%) | ||||
| Sea temperature | |||||
| Average sea temperature | 85°F | ||||
| Lowest sea temperature | 83°F | ||||
| Highest sea temperature | 86°F | ||||
| Wind | |||||
| Wind speed | 15km/h | ||||
| Wind temperature | 81°F | ||||
| Precipitation (rainfall) | |||||
| Rainfall | 14.5in | ||||
| Number of days with rainfall | 19 day(s) (64%) | ||||
| Record daily rainfall | 6.1in (2021) | ||||
| Other climate data | |||||
| Humidity | 82% | ||||
| Visibility | 8.98km | ||||
| Cloud cover | 43% | ||||
| UV index | 7 | ||||
| Daily sunshine hours | 11 | ||||
| Sunrise and sunset | |||||
| Time of sunrise | 05:29 | ||||
| Time of sunset | 17:39 | ||||
| Length of day | 12:10 | ||||
| Our opinion about the weather in september | |||||
| Our opinion at whereandwhen.net | tolerable | ||||
How was the weather last september?
Here is the day by day recorded weather in Jaco in september 2024:
79°F to 83°F
77°F to 81°F
77°F to 83°F
79°F to 83°F
79°F to 83°F
79°F to 83°F
79°F to 83°F
79°F to 83°F
79°F to 81°F
79°F to 83°F
79°F to 83°F
79°F to 83°F
81°F to 83°F
79°F to 83°F
79°F to 83°F
81°F to 83°F
81°F to 85°F
81°F to 83°F
79°F to 83°F
77°F to 81°F
77°F to 79°F
77°F to 77°F
77°F to 81°F
77°F to 81°F
76°F to 77°F
77°F to 83°F
79°F to 83°F
79°F to 83°F
79°F to 81°F
77°F to 81°F
Map: other cities in Costa Rica in september
Cities near Jaco:
| Esterillos in september | tolerable weather |
| Parque Nacional Carara in september | tolerable weather |
| Orotina in september | very bad weather |
| Parrita in september | very bad weather |
| Desamparados in september | very bad weather |
| Esparza in september | very bad weather |
| Paquera in september | bad weather |
| Tejar in september | very bad weather |
| Puntarenas in september | very bad weather |
| Atenas in september | very bad weather |
| Montezuma in september | bad weather |
| Miramar in september | very bad weather |
Click over cities on the map for information about the weather in september.
Jaco
perfect weather
good
tolerable
bad
very bad
Weather data for Jaco in september:
Weather data for Jaco for september are derived from an average of the weather forecast since 2009 in Jaco. There is a margin of error and these forecasts are to be considered as general information only. The weather in Jaco 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 Jaco.