Last updated: August 27, 2025
In Costi, Romania, the average temperature in September hovers around 20°C (67°F). Expect a range from a cool minimum of 3°C (38°F) to a warm maximum of 34°C (93°F). During this month, the area receives an average precipitation of 26 mm (1.0 in) over 3 days, with humidity levels around 61%. Enjoy the diverse climatic experiences this month has to offer!
In September in Costi, the average temperature is 20°C (67°F). The maximum can reach 34°C (93°F), and the minimum can be as low as 3°C (38°F). This variation in temperature makes Costi an ideal destination for travelers seeking both warm days and cooler evenings.
In Costi in September, the precipitation amount is 26 mm (1.0 in) recorded over the course of 3 days.
In Costi in September humidity is 61%. With an average temperature of 20°C (67°F), this humidity feels like a warm embrace, creating a slightly sticky atmosphere that can make outdoor activities feel a bit more strenuous. Travelers may find themselves seeking shade frequently and drinking water to stay hydrated, but the lush surroundings and vibrant life that often accompany such humidity can make the experience quite rewarding.
In Costi in September, the maximum UV index is 7, which corresponds to the high Exposure Category. This means that the time to burn is approximately 25 minutes. For more detailed information, you can check the Hourly UV Index in Costi.
UV Risk Categories
Weather in Costi varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Costi, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 0°C (32°F) | 27 mm (1.1 inches) | 87% | low |
| February Weather | 3°C (37°F) | 32 mm (1.3 inches) | 83% | moderate |
| March Weather | 6°C (43°F) | 38 mm (1.5 inches) | 80% | moderate |
| April Weather | 12°C (53°F) | 41 mm (1.6 inches) | 76% | high |
| May Weather | 18°C (64°F) | 45 mm (1.8 inches) | 73% | very high |
| June Weather | 22°C (72°F) | 89 mm (3.5 inches) | 68% | very high |
| July Weather | 24°C (75°F) | 49 mm (1.9 inches) | 65% | very high |
| August Weather | 25°C (77°F) | 19 mm (0.8 inches) | 53% | very high |
| September Weather | 20°C (67°F) | 26 mm (1.0 inches) | 61% | high |
| October Weather | 13°C (56°F) | 46 mm (1.8 inches) | 77% | moderate |
| November Weather | 7°C (46°F) | 33 mm (1.3 inches) | 85% | moderate |
| December Weather | 3°C (38°F) | 52 mm (2.1 inches) | 86% | low |