Osa (Uvita)
September
Weather in Osa for September 2026
Your guide to Osa weather in September - trends and predictions
In general, the average temperature in Osa at the beginning of September is 24.1 °C. As the month progressed, temperatures tended to moderately rise, reaching an average of 24.7 °C by the end of September.
Osa experiences heavy rainfall in September, with over 20 rainy days and an average total precipitation 593.3 mm.
Temperatures
Rain 🌧️
0
Dry days
30
Rainy days
0
Snow days
25°/13°
Temperatures
6 km/h
Avg max wind
90 %
Avg humidity
Osa Weather September
Move between months or click on a day
Temperatures trend during September in Osa
See the weather trend as well as the moving average line
September weather in Osa day by day
Click on a date for more information
| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Sept. |  Light rain shower | 25° /13° | 14.6 mm | 6 | |
| 2 Sept. |  Torrential rain shower | 25° /13° | 52.5 mm | 6 | |
| 3 Sept. |  Moderate or heavy rain shower | 24° /13° | 33.1 mm | 5 | |
| 4 Sept. | Moderate or heavy rain shower | 24° /13° | 27.3 mm | 5 | |
| 5 Sept. | Moderate or heavy rain shower | 24° /13° | 24.5 mm | 5 | |
| 6 Sept. | Light rain shower | 24° /12° | 13 mm | 5 | |
| 7 Sept. | Moderate or heavy rain shower | 23° /13° | 20 mm | 5 | |
| 8 Sept. | Light rain shower | 23° /13° | 13.8 mm | 5 | |
| 9 Sept. | Moderate or heavy rain shower | 25° /13° | 33.6 mm | 6 | |
| 10 Sept. | Moderate or heavy rain shower | 25° /13° | 10.4 mm | 6 | |
| 11 Sept. | Light rain shower | 25° /12° | 9 mm | 6 | |
| 12 Sept. | Moderate or heavy rain shower | 25° /12° | 25.2 mm | 6 | |
| 13 Sept. | Light rain shower | 23° /13° | 14.5 mm | 5 | |
| 14 Sept. | Torrential rain shower | 25° /13° | 34.2 mm | 6 | |
| 15 Sept. | Light rain shower | 25° /13° | 7.5 mm | 6 | |
| 16 Sept. | Moderate or heavy rain shower | 25° /12° | 23.7 mm | 6 | |
| 17 Sept. | Moderate or heavy rain shower | 23° /13° | 19.4 mm | 5 | |
| 18 Sept. | Light rain shower | 24° /13° | 10.7 mm | 5 | |
| 19 Sept. | Light rain shower | 23° /13° | 3.4 mm | 5 | |
| 20 Sept. | Light rain shower | 26° /13° | 8.7 mm | 6 | |
| 21 Sept. | Light rain shower | 26° /12° | 9.9 mm | 6 | |
| 22 Sept. | Light rain shower | 25° /15° | 21.9 mm | 6 | |
| 23 Sept. | Moderate or heavy rain shower | 25° /15° | 21.4 mm | 6 | |
| 24 Sept. | Light rain shower | 25° /12° | 9.2 mm | 6 | |
| 25 Sept. | Torrential rain shower | 26° /14° | 43.2 mm | 6 | |
| 26 Sept. | Moderate or heavy rain shower | 25° /13° | 24.1 mm | 6 | |
| 27 Sept. | Light rain shower | 24° /13° | 11.2 mm | 5 | |
| 28 Sept. | Moderate or heavy rain shower | 24° /12° | 22.2 mm | 5 | |
| 29 Sept. | Moderate or heavy rain shower | 24° /12° | 19.8 mm | 5 | |
| 30 Sept. | Light rain shower | 25° /12° | 11.3 mm | 6 | |
| Next | |||||
Important Notice
Our weather forecast for Osa in September is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Osa forecast closer to your planned date for the most up-to-date weather information.
Change Month
Osa in September - FAQ
What are the expected maximum and minimum temperatures in Osa during September?
Enjoy moderate daytime temperatures of up to 25° and cooler nights around 13°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Osa during September?
Significant rainfall exceeding 593.3 mm is expected in Osa during September, occurring over more than 30 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Osa during September?
The average wind speed in Osa during September is 6 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in Osa
Explore the daily rainfall trends and prepare for Osas September weather 💧
Typically, Osa has 30 rainy days in September with a total of 593.3 mm of rainfall.
UV exposure in Osa during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
Top locations in Osa
Select a location for an accurate weather forecast
More Locations Quick links
More Osa weather pages
You are here
Where is Osa?Get accurate weather forecasts for Osa, located at latitude 9.17 and longitude -83.74. Stay updated with localized weather information tailored for Osa.
Found a mistake?
We appreciate your attention to details. Tell us here.