The climate of St Helena is controlled by the South Atlantic High Pressure Cell and the Equatorial Trough. Despite the island’s locality within the tropics, its climate is kept mild and equable by the South East Trade Winds. The trade winds blow from high to low almost continuously making our weather so changeable, a dull rainy morning can often lead onto a bright sunny afternoon.
The four seasons are not recognised on St Helena, as there are no drastic weather patterns. The hottest months are between January and March. The coldest are between June and September.