Index


Introduction



In Guinea, the climate is tropical, with a dry season in winter and a rainy season in summer due to the south-west monsoon.
Precipitation is more abundant along the coast, where up to 4,000 millimeters (155 inches) of rain fall in a year, while it's less abundant in the north and the north-east, where it's slightly above 1,000 mm (40 in) per year. Although the rains are heavier on the coast, the rainy season lasts longer in the south-east, where the first showers occur as early as in the second half of February, and the last ones occur in November, while in Conakry, on the coast, the rains occur from May to November, and in Kankan, in the east, from May to October.
Winter, from December to February, is hot, dry and sunny, with the prevalence of the north-east wind, called Harmattan, which can carry dust and sand particles from the desert. Nights are usually cool, especially in the interior, while during the day the temperature is high, around 32/34 °C (90/93 °F), but with peaks of 40 °C (104 °F). By February, the first showers occur in the south, while in the center and north the heat becomes even more intense.
The increase in temperature in spring is less pronounced along the coast, which is mitigated by the ocean breeze, but also in the south-central inland areas, both because of the higher altitude and the fact that the monsoon arrives earlier.

Inland areas



The interior of Guinea is almost everywhere occupied by hills and low mountains, which reach at most an altitude of around 1,500 meters (5,000 feet), both in Mount Loura (in the north-west) and in Mount Nimba (in the south-east). In the mountains, some important rivers such as Niger, Senegal, and Gambia have their source.

Koundara

The altitude tempers a bit the climate, so the warmest cities are found at lower elevations, such as Koundara, which is located in the far north, at sea level, and it's very hot especially from March to May, before the arrival of the monsoon, when highs are normally around 38/40 °C (100/104 °F).
Here are the average temperatures of Koundara.
Koundara - Average temperatures
MonthJanFebMarAprMayJunJulAugSepOctNovDec
Min (°C)171922242524222222232016
Max (°C)343738393834313131323334
Min (°F)636672757775727272736861
Max (°F)939910010210093888888909193

As mentioned, the north is the least rainy area of country; moreover, the rainy season is shorter. Here is the average precipitation in Koundara.
Koundara - Average precipitation
MonthJanFebMarAprMayJunJulAugSepOctNovDecYear
Prec.(mm)000250135250305205801001100
Prec.(in)0000.125.39.8128.13.10.4043.3
Days000131014171761170

In the far north, the sun shines regularly in the long dry season, but all in all, it is seen quite often also from July to September.
Koundara - Sunshine
MonthJanFebMarAprMayJunJulAugSepOctNovDec
Hours999998667898

N'Zerekoré

In N'Zerekoré, located in the south-east, at 500 meters (1,600 feet) above sea level, the average daytime temperature does not go above 32 °C (90 °F) in February and March. Here are the average temperatures.
NZerekoré - Average temperatures
MonthJanFebMarAprMayJunJulAugSepOctNovDec
Min (°C)161820212120202020201917
Max (°C)313232313029272728293030
Min (°F)616468707068686868686663
Max (°F)889090888684818182848686

As mentioned, the south-east is the area where the rainy season is longer. Here is the average precipitation in N'Zerekoré.
NZerekoré - Average precipitation
MonthJanFebMarAprMayJunJulAugSepOctNovDecYear
Prec.(mm)104511516017520022530032519075251840
Prec.(in)0.41.84.56.36.97.98.911.812.87.53172.4
Days1491214151621211772139

In the south, the sun shines less often than in the north, even in the dry season, which, however, is still quite sunny.
NZerekoré - Sunshine
MonthJanFebMarAprMayJunJulAugSepOctNovDec
Hours887776445777

Fouta Djalon

The coast


Conakry

The capital, Conakry, lying on the coast, experiences little variation in temperatures throughout the year: in winter, highs are around 30/32 °C (86/90 °F), while in the rainy season they drop to 27/29 °C (81/84 °F), although the higher humidity makes the heat muggy (but at least on the coast the heat is tempered by the breeze). Here are the average temperatures.
Conakry - Average temperatures
MonthJanFebMarAprMayJunJulAugSepOctNovDec
Min (°C)222223242423232323232423
Max (°C)303031323130282829303030
Min (°F)727273757573737373737573
Max (°F)868688908886828284868686

Conakry is the rainiest city of Guinea: the majority of the 4 meters (13 feet) of rain that fall in a year, occurs from June to mid-October, in particular the rains are torrential in July and August, when it rains almost every day. Here is the average precipitation.
Conakry - Average precipitation
MonthJanFebMarAprMayJunJulAugSepOctNovDecYear
Prec.(mm)11320135380113511106202957083775
Prec.(in)000.10.85.31544.743.724.411.62.80.3148.6
Days001210192727221761132

In Conakry, the sun shines quite often from November to April, while in the rainy season, and especially from July to September, the sky is often cloudy. In addition to being the rainiest area, that of the capital is also the least sunny of the country.
Conakry - Sunshine
MonthJanFebMarAprMayJunJulAugSepOctNovDec
Hours788775434677

The sea in Guinea is warm enough for swimming all year round, as you can see in the following table.
Conakry - Sea temperature
MonthJanFebMarAprMayJunJulAugSepOctNovDec
Temp (°C)272626272828282727282928
Temp (°F)817979818282828181828482

Best Time



The best time to visit Guinea is winter, in particular in December and January. The weather is good, although it can get hot during the day, especially in inland areas and at lower altitudes, while it can get cool at night, especially in the mountains.
Before the arrival of the monsoon, from March to May, it becomes very hot in inland regions, especially in the north, while on the coast the temperature is more stable. On the contrary, in the south the rains begin to fall.
The best period for a beach holiday runs from December to April, since it's the dry season.

What to pack



In winter: in Conakry and along the coast, bring light clothes for the day, a light sweatshirt for the evening, a scarf for the wind-borne sand and dust. In inland areas, it may be useful to bring a sweatshirt and a jacket for the evening.
In summer: bring light clothing of natural fibers, a light sweatshirt and a light raincoat for the long and heavy downpours, or an umbrella, which, however, may not be effective for tropical rains. In inland areas and mountain ranges, you can add a heavier sweatshirt or a sweater for wet and rainy days.

Back to top