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).
Temperatures are similar to those of Northern Portugal. May is a great time to visit the Douro Valley, with the weather mild and the rainy season coming to a close. 1  The average maximum temperature in in May is 67Â°F/20Â°C.2  The average minimum is 47Â°F/9Â°C. 3  The average rainfall in May in Vila Real is 67mm/2.6.ay is a great time to visit the Douro Valley, with the weather mild and the rainy season coming to a close. 1  The average maximum temperature in in May is 67Â°F/20Â°C. 2  The average minimum is 47Â°F/9Â°C. 3  The average rainfall in May in Vila Real is 67mm/2.6.