Nicoya (Nosara)
September
Weather in Nicoya for September 2025
Your guide to Nicoya weather in September - trends and predictions
Until now, September 2025 in Nicoya has been nearly identical to the historical average, with a temperature of 27.8 °C (showing only a slight deviation of -0.1 °C).
The forecast for the next days in Nicoya predicts temperatures to be around 28 °C, close to the historical average.
In general, the average temperature in Nicoya at the beginning of September is 27.7 °C. As the month progressed, temperatures tended to slightly increase, reaching an average of 27.9 °C by the end of September.
Nicoya experiences heavy rainfall in September, with over 20 rainy days and an average total precipitation 435.2 mm.
Temperatures
Rain 🌧️
1
Dry days
29
Rainy days
0
Snow days
27°/24°
Temperatures
12 km/h
Avg max wind
85 %
Avg humidity
Nicoya Weather September
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Temperatures trend during September in Nicoya
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September weather in Nicoya day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Sept. |  Light rain shower | 28° /23° | 14.6 mm | 6 | |
| 2 Sept. | Light rain shower | 28° /23° | 18.6 mm | 6 | |
| 3 Sept. | Light rain shower | 27° /23° | 21 mm | 6 | |
| 4 Sept. | Light rain shower | 28° /23° | 20.2 mm | 6 | |
| 5 Sept. | Light rain shower | 28° /23° | 19.1 mm | 6 | |
| 6 Sept. |  Moderate or heavy rain shower | 28° /23° | 22.7 mm | 6 | |
| 7 Sept. | Light rain shower | 27° /23° | 21.3 mm | 6 | |
| 8 Sept. | Light rain shower | 27° /23° | 9.5 mm | 6 | |
| 9 Sept. | Light rain shower | 28° /23° | 10.1 mm | 6 | |
| 10 Sept. |  Patchy light drizzle | 29° /23° | 7.7 mm | 6 | |
| 11 Sept. | Light rain shower | 28° /24° | 10.8 mm | 6 | |
| 12 Sept. | Light rain shower | 29° /24° | 8.6 mm | 6 | |
| 13 Sept. | Light rain shower | 28° /24° | 15.8 mm | 6 | |
| 14 Sept. | Light rain shower | 28° /23° | 8.7 mm | 6 | |
| 15 Sept. | Light rain shower | 28° /24° | 11.8 mm | 6 | |
| 16 Sept. |  Moderate rain | 29° /24° | 10.2 mm | 2.3 | |
| 17 Sept. |  Heavy rain | 27° /24° | 25.4 mm | 1.4 | |
| 18 Sept. | Heavy rain | 26° /23° | 28 mm | 0.5 | |
| 19 Sept. | Moderate rain | 27° /23° | 8.4 mm | 2.5 | |
| 20 Sept. | Moderate rain | 27° /23° | 6.3 mm | 0 | |
| 21 Sept. | Patchy rain possible | 28° /24° | 3 mm | 6 | |
| 22 Sept. | Moderate rain | 28° /24° | 5.3 mm | 6 | |
| 23 Sept. | Patchy rain possible | 28° /24° | 3.7 mm | 6 | |
| 24 Sept. | Patchy rain possible | 29° /24° | 2 mm | 6 | |
| 25 Sept. | Patchy rain possible | 28° /24° | 3.5 mm | 6 | |
| 26 Sept. | Patchy rain possible | 28° /25° | 2.3 mm | 6 | |
| 27 Sept. | Moderate rain | 27° /24° | 5.6 mm | 6 | |
| 28 Sept. | Patchy rain possible | 28° /24° | 0.8 mm | 6 | |
| 29 Sept. | Patchy rain possible | 28° /23° | 3.3 mm | 6 | |
| 30 Sept. | Light rain shower | 27° /23° | 11.6 mm | 6 | |
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Important Notice
Our weather forecast for Nicoya 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 Nicoya forecast closer to your planned date for the most up-to-date weather information.
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Nicoya in September - FAQ
What are the expected maximum and minimum temperatures in Nicoya during September?
During September, expect a variety of temperatures with highs around 27° and lows near 24°, suitable for diverse activities and preferences.
How much rainfall should be expected in Nicoya during September?
Significant rainfall exceeding 435.2 mm is expected in Nicoya during September, occurring over more than 29 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Nicoya during September?
The average wind speed in Nicoya during September is 12 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in Nicoya
Explore the daily rainfall trends and prepare for Nicoyas September weather 💧
UV exposure in Nicoya during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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