Yala Peak is possible to during all seasons of the year, if the fine weather allows. The best time are spring and autumn, monsoon season of June to August is wet and get rains most of the day. Can enjoy in winter time of December to February, but it will be freezing cold higher up. The only time Yala Peak climb in not possible in deep snow. However, the best time are spring from March to May and autumn from September to November.