Last updated: June 24, 2025
In September, the average temperature in Rancho Viejo, United States is a warm 28°C (83°F). Expect lows of 18°C (65°F) and highs reaching up to 36°C (97°F). With an average humidity of 75%, you might feel the heat, especially since 116 mm (4.6 in) of precipitation can occur over 17 days. Prepare for a tropical experience!
In September in Rancho Viejo, the average temperature is 28°C (83°F). Maximums can reach 36°C (97°F), while minimums can drop as low as 18°C (65°F). It's an ideal time for travelers seeking warm weather and pleasant conditions for outdoor activities.
In Rancho Viejo in September, the precipitation amount is 116 mm (4.6 in) spread over 17 days.
In Rancho Viejo in September humidity is 75%. With an average temperature of 28°C (83°F), this humidity feels like a warm blanket enveloping you, making outdoor activities feel particularly heavy, and prompting frequent breaks in the shade to stay comfortable while traveling.
In Rancho Viejo in September, the maximum UV index reaches 11, which corresponds to an extreme Exposure Category. With a time to burn of just 10 minutes, it's essential to take precautions. For more details, you can check the Hourly UV Index in Rancho Viejo.
UV Risk Categories
Weather in Rancho Viejo varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Rancho Viejo, focusing on differences in temperature, rainfall, humidity, and UV levels.
Temperature | Precipitation | Humidity | UV | |
---|---|---|---|---|
January Weather | 17°C (63°F) | 31 mm (1.2 inches) | 84% | high |
February Weather | 18°C (65°F) | 22 mm (0.9 inches) | 83% | very high |
March Weather | 22°C (71°F) | 39 mm (1.5 inches) | 78% | very high |
April Weather | 24°C (76°F) | 27 mm (1.1 inches) | 81% | extreme |
May Weather | 27°C (81°F) | 76 mm (3.0 inches) | 82% | extreme |
June Weather | 29°C (84°F) | 92 mm (3.6 inches) | 74% | extreme |
July Weather | 29°C (85°F) | 119 mm (4.7 inches) | 68% | extreme |
August Weather | 30°C (86°F) | 36 mm (1.4 inches) | 67% | extreme |
September Weather | 28°C (83°F) | 116 mm (4.6 inches) | 75% | extreme |
October Weather | 25°C (77°F) | 55 mm (2.2 inches) | 78% | very high |
November Weather | 21°C (70°F) | 35 mm (1.4 inches) | 83% | high |
December Weather | 18°C (65°F) | 26 mm (1.0 inches) | 86% | high |