Arenal Viejo
September
Weather in Arenal Viejo for September 2025
Your guide to Arenal Viejo weather in September - trends and predictions
Until now, September 2025 in Arenal Viejo has been nearly identical to the historical average, with a temperature of 28.1 °C (showing only a slight deviation of -0.5 °C).
The forecast for the next days in Arenal Viejo predicts temperatures to be around 28 °C, close to the historical average.
In general, the average temperature in Arenal Viejo at the beginning of September is 28.7 °C. As the month progressed, temperatures tended to moderately fall, reaching an average of 28.1 °C by the end of September.
Arenal Viejo experiences heavy rainfall in September, with over 20 rainy days and an average total precipitation 522.8 mm.
Temperatures
Rain 🌧️
0
Dry days
30
Rainy days
0
Snow days
28°/24°
Temperatures
12 km/h
Avg max wind
84 %
Avg humidity
Arenal Viejo Weather September
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Temperatures trend during September in Arenal Viejo
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September weather in Arenal Viejo day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Sept. |  Light rain shower | 29° /24° | 14 mm | 6 | |
| 2 Sept. | Light rain shower | 29° /24° | 17.4 mm | 6 | |
| 3 Sept. | Light rain shower | 28° /24° | 16.2 mm | 6 | |
| 4 Sept. |  Moderate or heavy rain shower | 29° /24° | 18.7 mm | 6 | |
| 5 Sept. | Moderate rain at times | 29° /23° | 27.6 mm | 6 | |
| 6 Sept. | Moderate or heavy rain shower | 29° /23° | 22.6 mm | 6 | |
| 7 Sept. | Moderate or heavy rain shower | 28° /24° | 23 mm | 6 | |
| 8 Sept. | Light rain shower | 28° /24° | 9.6 mm | 6 | |
| 9 Sept. | Light rain shower | 28° /24° | 8.1 mm | 6 | |
| 10 Sept. | Light rain shower | 29° /24° | 11.7 mm | 6 | |
| 11 Sept. | Light rain shower | 29° /24° | 13.6 mm | 6 | |
| 12 Sept. | Light rain shower | 29° /24° | 12 mm | 6 | |
| 13 Sept. | Moderate or heavy rain shower | 28° /24° | 19.7 mm | 6 | |
| 14 Sept. | Moderate or heavy rain shower | 29° /25° | 18.4 mm | 6 | |
| 15 Sept. | Light rain shower | 29° /24° | 10.9 mm | 6 | |
| 16 Sept. | Patchy rain possible | 27° /22° | 3.3 mm | 2.1 | |
| 17 Sept. |  Heavy rain | 28° /22° | 22.3 mm | 2 | |
| 18 Sept. |  Moderate rain | 27° /22° | 17.2 mm | 2.2 | |
| 19 Sept. | Moderate rain | 26° /22° | 9.1 mm | 1.7 | |
| 20 Sept. | Moderate rain | 27° /22° | 18.4 mm | 0 | |
| 21 Sept. | Moderate rain | 27° /22° | 5.8 mm | 5 | |
| 22 Sept. | Patchy rain possible | 28° /22° | 4.5 mm | 5 | |
| 23 Sept. | Patchy rain possible | 29° /22° | 4.5 mm | 5 | |
| 24 Sept. | Patchy rain possible | 29° /22° | 1.6 mm | 5 | |
| 25 Sept. | Patchy rain possible | 29° /22° | 2.2 mm | 5 | |
| 26 Sept. | Patchy rain possible | 29° /22° | 1 mm | 5 | |
| 27 Sept. | Patchy rain possible | 28° /22° | 4 mm | 5 | |
| 28 Sept. | Patchy rain possible | 27° /22° | 2.6 mm | 5 | |
| 29 Sept. | Moderate rain | 28° /22° | 12.2 mm | 5 | |
| 30 Sept. | Light rain shower | 27° /23° | 28 mm | 6 | |
| Next | |||||
Important Notice
Our weather forecast for Arenal Viejo 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 Arenal Viejo forecast closer to your planned date for the most up-to-date weather information.
Change Month
Arenal Viejo in September - FAQ
What are the expected maximum and minimum temperatures in Arenal Viejo during September?
During September, expect a variety of temperatures with highs around 28° and lows near 24°, suitable for diverse activities and preferences.
How much rainfall should be expected in Arenal Viejo during September?
Significant rainfall exceeding 522.8 mm is expected in Arenal Viejo during September, occurring over more than 30 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Arenal Viejo during September?
The average wind speed in Arenal Viejo during September is 12 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in Arenal Viejo
Explore the daily rainfall trends and prepare for Arenal Viejos September weather 💧
UV exposure in Arenal Viejo during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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