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Climate - Guinea


Average weather, temperature, rainfall, when to go, what to pack

Flag - Guinea

Map - Guinea


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Index


  • Introduction
  • Inland areas - Koundara, N'Zerekoré
  • The coast - Conakry
  • Best Time
  • What to pack

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
MonthMin (°C)Max (°C)Mean (°C)Min (°F)Max (°F)Mean (°F)
January173425.5639377.9
February193728669982.4
March2238307210086
April243931.57510288.7
May253831.57710088.7
June243429759384.2
July223126.5728879.7
August223126.5728879.7
September223126.5728879.7
October233227.5739081.5
November203326.5689179.7
December163425619377
Year21.334.327.7570.493.882

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
MonthMillimetersInchesDays
January000
February000
March000
April20.11
May5023
June1355.310
July2509.814
August3051217
September2058.117
October803.16
November100.41
December001
Year110043.370

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 hours
MonthAverageTotal
January9280
February9.5265
March9.5290
April9.5280
May9275
June7.5230
July6.5200
August6185
September7210
October8240
November9265
December8.5265
Year8.22975

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
MonthMin (°C)Max (°C)Mean (°C)Min (°F)Max (°F)Mean (°F)
January163123.5618874.3
February183225649077
March203226689078.8
April213126708878.8
May213025.5708677.9
June202924.5688476.1
July202723.5688174.3
August202723.5688174.3
September202824688275.2
October202924.5688476.1
November193024.5668676.1
December173023.5638674.3
Year19.329.624.4566.885.476

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
MonthMillimetersInchesDays
January100.41
February451.84
March1154.59
April1606.312
May1756.914
June2007.915
July2258.916
August30011.821
September32512.821
October1907.517
November7537
December2512
Year184072.4139

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 hours
MonthAverageTotal
January7.5240
February7.5215
March7215
April7205
May6.5210
June5.5170
July4125
August4125
September5155
October6.5205
November7.5220
December7215
Year6.32295

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 31/32 °C (88/90 °F), while in the rainy season they drop to 28/29 °C (82/84 °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 (1991-2020)
MonthMin (°C)Max (°C)Mean (°C)Min (°F)Max (°F)Mean (°F)
January23.431.227.3748881.2
February2431.627.8758982.1
March24.83228.4779083.1
April25.43228.7789083.7
May25.431.728.5788983.3
June24.430.227.3768681.1
July23.828.626.2758379.2
August23.828.226758378.8
September23.829.226.5758579.7
October2430.227.1758680.8
November24.93128778882.3
December24.231.627.9758982.2
Year24.330.627.475.887.181.5

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
MonthMillimetersInchesDays
January100
February100
March30.11
April200.82
May1355.310
June3801519
July113544.727
August111043.727
September62024.422
October29511.617
November702.86
December80.31
Year3775148.6132

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 hours
MonthAverageTotal
January7225
February8225
March8250
April7.5220
May6.5210
June5155
July3.5110
August385
September4.5135
October6190
November7205
December7215
Year6.12220

The sea in Guinea is warm enough for swimming all year round, as you can see in the following table.
Conakry - Sea temperature
MonthCelsius (°C)Fahrenheit (°F)
January2781
February2780
March2679
April2780
May2882
June2883
July2882
August2781
September2882
October2883
November2984
December2883
Year27.781.8

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.

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 See also (cities or regions):

 Conakry

 Nearby countries:

 Guinea Bissau
 Ivory Coast
 Liberia
 Mali
 Senegal
 Sierra Leone

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