Last updated: August 23, 2025
In Croissy-sur-Seine, France, the average temperature in August hovers around 20°C (68°F). However, you can expect a range from a cool 7°C (44°F) to a scorching 37°C (99°F). During this month, precipitation averages around 58 mm (2.3 in), falling across 9 days, and the air tends to be quite moist with an average humidity of 68%.
In August in Croissy-sur-Seine, the average temperature is 20°C (68°F). Maximum temperatures can reach 37°C (99°F), while minimums can drop as low as 7°C (44°F). Travelers should be prepared for a range of temperatures, ensuring they pack both light clothing for warm days and layers for cooler evenings.
In Croissy-sur-Seine in August, the precipitation amount is 58 mm (2.3 in) spread over 9 days.
In Croissy-sur-Seine in August humidity is 68%. With an average temperature of 20°C (68°F), this humidity feels like a warm embrace, making it ideal for leisurely strolls while also prompting travelers to stay hydrated and seek out refreshing breaks from the heat.
In Croissy-sur-Seine in August, the maximum UV index is 8, which corresponds to a very high Exposure Category. This means that the time to burn is only 15 minutes. For more detailed information, you can refer to the Hourly UV Index in Croissy-sur-Seine.
UV Risk Categories
Weather in Croissy-sur-Seine varies notably across the year, with each month offering distinct climate conditions. This page compares August’s weather to other months in Croissy-sur-Seine, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 5°C (40°F) | 56 mm (2.2 inches) | 91% | low |
| February Weather | 6°C (43°F) | 69 mm (2.7 inches) | 89% | moderate |
| March Weather | 8°C (47°F) | 75 mm (3.0 inches) | 85% | moderate |
| April Weather | 11°C (52°F) | 34 mm (1.3 inches) | 84% | high |
| May Weather | 14°C (58°F) | 70 mm (2.7 inches) | 82% | very high |
| June Weather | 19°C (66°F) | 74 mm (2.9 inches) | 80% | very high |
| July Weather | 20°C (69°F) | 49 mm (1.9 inches) | 73% | very high |
| August Weather | 20°C (68°F) | 58 mm (2.3 inches) | 68% | very high |
| September Weather | 16°C (62°F) | 40 mm (1.6 inches) | 76% | high |
| October Weather | 13°C (55°F) | 78 mm (3.1 inches) | 88% | moderate |
| November Weather | 8°C (46°F) | 66 mm (2.6 inches) | 92% | low |
| December Weather | 6°C (43°F) | 102 mm (4.0 inches) | 93% | low |