Last updated: August 23, 2025
In Sully-sur-Loire, France, the average temperature in August is a pleasant 21°C (70°F). However, be prepared for a temperature range that can dip to a mild 7°C (44°F) and soar up to a hot 37°C (100°F). During this month, expect around 40 mm (1.6 in) of precipitation spread over 9 days, contributing to an average humidity of 68%. Whether you're planning outdoor activities or cozy indoor days, our weather has a little something for everyone!
In August in Sully-sur-Loire, the average temperature is 21°C (70°F), with maximums reaching up to 37°C (100°F) and minimums dropping as low as 7°C (44°F). It's a great time to visit Sully-sur-Loire, as the mild weather allows for a variety of outdoor activities and exploration.
In Sully-sur-Loire in August, the precipitation amount is 40 mm (1.6 in) over the course of 9 days.
In Sully-sur-Loire in August humidity is 68%. With an average temperature of 21°C (70°F), this humidity feels like a warm embrace, making the air feel slightly heavy and sticky, which can be quite exhausting for travelers.
In Sully-sur-Loire 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 Sully-sur-Loire.
UV Risk Categories
Weather in Sully-sur-Loire varies notably across the year, with each month offering distinct climate conditions. This page compares August’s weather to other months in Sully-sur-Loire, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 5°C (40°F) | 67 mm (2.6 inches) | 90% | low |
| February Weather | 6°C (44°F) | 64 mm (2.5 inches) | 88% | moderate |
| March Weather | 9°C (48°F) | 72 mm (2.8 inches) | 85% | moderate |
| April Weather | 12°C (53°F) | 36 mm (1.4 inches) | 83% | high |
| May Weather | 15°C (59°F) | 83 mm (3.3 inches) | 83% | very high |
| June Weather | 20°C (67°F) | 67 mm (2.6 inches) | 79% | very high |
| July Weather | 21°C (71°F) | 48 mm (1.9 inches) | 71% | very high |
| August Weather | 21°C (70°F) | 40 mm (1.6 inches) | 68% | very high |
| September Weather | 17°C (64°F) | 52 mm (2.1 inches) | 76% | high |
| October Weather | 13°C (56°F) | 80 mm (3.1 inches) | 87% | moderate |
| November Weather | 8°C (46°F) | 66 mm (2.6 inches) | 91% | low |
| December Weather | 6°C (44°F) | 102 mm (4.0 inches) | 93% | low |