Visiting local bars in Talmont-sur-Gironde is better when the weather is good. These rainfall averages and temperatures can help you choose the best time for bar-hopping. The hottest months are usually August and July, with an average temperature of 20°C, while the coldest months are February and January, with an average of 8°C. Average annual precipitation for Talmont-sur-Gironde is 803 mm.