Sierra Leone Climatic Classifications

CodeDescriptionGroupNumber of states/regionsStates/regions
AmTropical monsoonTropical5 Eastern North Western Northern Southern Western Area

Summary: Most regions (5) in Sierra Leone lie in the Tropical monsoon climate zone (Köppen: Am). The mean average of annual temperatures range from a high of 28.07°C (82.53°F) in Western Area to a low of 26.78°C (80.2°F) in Eastern.

Climate Sierra Leone: Weather By Month

MonthJanFebMarAprMayJunJulAugSepNovOctDecYear
Record high °C (°F)35.51(95.92)37.42(99.36)38.39(101.1)37.47(99.45)33.46(92.23)30.7(87.26)28.27(82.89)27.7(81.86)28.98(84.16)30.97(87.75)32.03(89.65)33.14(91.65)38.39(101.1)
Average high °C (°F)33.95(93.11)35.03(95.05)35.03(95.05)34.24(93.63)32.23(90.01)29.97(85.95)27.87(82.17)27.21(80.98)28.47(83.25)30.16(86.29)31.27(88.29)32.39(90.3)31.48(88.66)
Daily mean °C (°F)28.51(83.32)29.51(85.12)29.89(85.8)29.77(85.59)28.59(83.46)26.97(80.55)25.44(77.79)24.99(76.98)25.75(78.35)26.82(80.28)27.52(81.54)27.61(81.7)27.61(81.7)
Average low °C (°F)21.28(70.3)21.96(71.53)23.08(73.54)23.96(75.13)24.08(75.34)23.35(74.03)22.47(72.45)22.32(72.18)22.45(72.41)22.71(72.88)22.73(72.91)21.54(70.77)22.66(72.79)
Record low °C (°F)18.28(64.9)19.42(66.96)20.71(69.28)21.97(71.55)22.1(71.78)21.38(70.48)20.48(68.86)20.52(68.94)20.47(68.85)20.37(68.67)19.91(67.84)18.15(64.67)18.15(64.67)
Average precipitation mm (inches)9.04(0.36)14.45(0.57)48.31(1.9)102.14(4.02)240.67(9.48)359.99(14.17)582.69(22.94)697.49(27.46)557.75(21.96)356.96(14.05)135.96(5.35)19.44(0.77)260.41(10.25)
Average precipitation days (≥ 1.0 mm)2.182.828.8914.1824.2928.4730.3830.0329.229.0920.674.0718.69
Average relative humidity (%)58.760.866.0370.1879.8485.4388.4889.9589.4386.5981.1663.6776.69
Mean monthly sunshine hours11.311.4411.2711.0410.49.48.557.979.1110.210.9311.1410.23

Sierra Leone Climate Graph

Sierra Leone

Sierra Leone’s Cities by Temperature

Sierra Leone’s states/regions ranking by average yearly temperature:

Western Area
28.07°C | 82.53°F
North Western
28.07°C | 82.53°F
Southern
28.07°C | 82.53°F
Northern
27.09°C | 80.76°F
Eastern
26.78°C | 80.2°F

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