🇬🇶Equatorial Guinea

Equatorial Guinea spans roughly 3°45′N (Bioko) to 1°26′S (Annobón) as a small Central African nation of 28,051 km² comprising a mainland portion known as Río Muni bordered by Cameroon and Gabon, plus the volcanic Atlantic island of Bioko where the capital Malabo sits at the foot of Pico Basilé rising to 3,011 m (the country's highest peak), the small island of Annobón south of the Equator, and several islets. The climate is uniformly tropical throughout, with tropical monsoon Am dominating Bioko and the mainland coast and somewhat less rain in the Río Muni interior, modulated by steady southwest monsoon flow.

Malabo on the northern coast of Bioko has highs of 28–32°C and nights around 23°C year-round with 1,950 mm of rainfall split between two wet peaks in May to June and September to October, with a dry interval from December to February. The southern coast of Bioko around Ureca receives over 10,000 mm annually, among Africa's wettest sites. Bata on the mainland coast has highs of 29–31°C and nights around 20°C with 2,400 mm; Mongomo on the Gabon border inland is drier.

Annobón in its equatorial maritime setting has a tropical climate with heavy rainfall and high humidity. Relative humidity remains 80 to 90% year-round. Major climate concerns include intensifying coastal erosion, accelerating offshore-oil-driven environmental stress on Bioko's coastal ecosystems, growing rainforest deforestation pressure on the Río Muni interior, and sea-level rise threatening low-lying coastal settlements.

Our archive covers 2 Equatoguinean cities with daily ERA5 reanalysis data going back to 1940. Comparing the last decade against the 1940–1970 baseline, mean temperatures across these cities have risen by about 1.1°C.