Mauna Kea (White Mountain) is a dormant volcano on the island of Hawaii, the largest and southernmost of the Hawaiian Islands. It is located about 300 km (190 miles) from Honolulu, which lies on the island of Oahu.
Terceira: Annual Weather Averages. August is the hottest month in Terceira with an average temperature of 23Â°C (73Â°F) and the coldest is January at 15Â°C (59Â°F).
Weather in Thira in August. The average maximum daytime temperature in Thira in August is a warm 27Â°C (81Â°F) with moderate heat & humidity. There are usually 12 hours of bright sunshine each day, which represents 92% of the 13 hours of daylight. The average sea temperature in and around Thira in August is 24Â°C (75Â°F).