Guinea - Climate
The coastal region and much of the inland area have a tropical climate with a long rainy season of six months, a relatively high and uniform annual temperature, and high humidity. Conakry's year-round average high is 29° C (84° F ), and the low is 23° C (73° F ); its average rainfall is 430 cm (169 in) per year. April is the hottest month; July and August are the wettest. Rainfall in the Futa Jallon is much less (about 150–200 cm/60–80 in) and more irregular, and temperatures are lower; moreover, the daily temperature range is much greater, especially during the dry season. In Upper Guinea, rainfall is lower than in the Futa Jallon; the average daily temperature range is as great as 14° C (25° F ), and greater in the dry season. Rainfall in the highlands averages about 280 cm (110 in) annually; temperatures are relatively equable owing to the altitude, although with an average daily range of 18° C (32° F ).