Visiting local bars in Formosa is better when you know what the weather holds. These rainfall averages and temperatures can help you determine the best time for bar-hopping. The hottest months are usually January and February, with an average temperature of 27°C, while the coldest months are July and June, with an average of 18°C. The snowiest months in Formosa are May, January, February and March, with each month seeing an average of 17 cm of snowfall.