Most of this climate zone is characterised by cool coastal breezes, and absence of shelter from the unsettled weather that moves over the sea from the south and southwest. Hot northwesterly conditions in summer can occasionally bring high temperatures. Typical summer daytime maximum air temperatures range from 16°C to 23°C, occasionally rising above 30°C. Winters are cold with infrequent snowfall and frequent frost. Typical winter daytime maximum air temperatures range from 8°C to 12°C. Hours of bright sunshine average about 1600 hours annually and are often affected by low coastal cloud or by high cloud in foehn wind conditions. Southwesterlies prevail for much of the time about Southland, but northeasterlies are more frequent from Dunedin north.