Climate and Average Weather Year Round in Sierra Leone

We show the climate in Sierra Leone by comparing the average weather in 2 representative places: Freetown and Bo.

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Freetown
Sierra Leone
Bo
Sierra Leone
Map

Average High and Low Temperature in Sierra Leone

Average High and Low Temperature in Sierra LeoneJanFebMarAprMayJunJulAugSepOctNovDec65°F65°F70°F70°F75°F75°F80°F80°F85°F85°F90°F90°F95°F95°F7874868176679482NowNowFreetownFreetownBoBo
The daily average high and low air temperature at 2 meters above the ground.
HighJanFebMarAprMayJunJulAugSepOctNovDec
Freetown 85°F84°F85°F85°F86°F84°F82°F81°F83°F85°F86°F85°F
Bo 89°F92°F94°F93°F89°F85°F83°F82°F83°F84°F85°F87°F
LowJanFebMarAprMayJunJulAugSepOctNovDec
Freetown 74°F77°F78°F78°F78°F77°F75°F75°F75°F76°F76°F75°F
Bo 68°F71°F74°F76°F75°F73°F72°F71°F72°F73°F72°F69°F

Freetown

Average Hourly Temperature in FreetownJanFebMarAprMayJunJulAugSepOctNovDec12 AM12 AM4 AM4 AM8 AM8 AM12 PM12 PM4 PM4 PM8 PM8 PM12 AM12 AMNowNowwarmhothot

Bo

Average Hourly Temperature in BoJanFebMarAprMayJunJulAugSepOctNovDec12 AM12 AM4 AM4 AM8 AM8 AM12 PM12 PM4 PM4 PM8 PM8 PM12 AM12 AMNowNowcomfortablecomfortablewarmhothotcomfortable
frigid 15°F freezing 32°F very cold 45°F cold 55°F cool 65°F comfortable 75°F warm 85°F hot 95°F sweltering
The average hourly temperature, color coded into bands. The shaded overlays indicate night and civil twilight.

Chance of Clearer Skies in Sierra Leone

Chance of Clearer Skies in Sierra LeoneJanFebMarAprMayJunJulAugSepOctNovDec0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%632022NowNowFreetownFreetownBoBo
The percentage of time the sky is clear, mostly clear, or partly cloudy (i.e., less than 60% of the sky is covered by clouds).
Clearer SkiesJanFebMarAprMayJunJulAugSepOctNovDec
Freetown 62%58%48%37%25%25%24%21%22%24%39%56%
Bo 62%54%41%29%23%30%29%26%26%29%40%57%

Daily Chance of Precipitation in Sierra Leone

Daily Chance of Precipitation in Sierra LeoneJanFebMarAprMayJunJulAugSepOctNovDec0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%86882NowNowFreetownFreetownBoBo
The percentage of days in which precipitation is observed, excluding trace quantities.
Days of Precip.JanFebMarAprMayJunJulAugSepOctNovDec
Freetown 0.1d0.4d0.7d3.3d11.0d20.1d23.9d26.3d22.6d13.9d4.2d0.7d
Bo 0.9d1.8d3.5d9.1d16.2d20.6d23.6d26.4d23.4d17.6d7.2d1.5d

Average Monthly Rainfall in Sierra Leone

Average Monthly Rainfall in Sierra LeoneJanFebMarAprMayJunJulAugSepOctNovDec0 in0 in5 in5 in10 in10 in15 in15 in20 in20 in25 in25 in23.417.30.2NowNowFreetownFreetownBoBo
The average rainfall accumulated over the course of a sliding 31-day period centered on the day in question.
RainfallJanFebMarAprMayJunJulAugSepOctNovDec
Freetown 0.0″0.1″0.3″1.1″5.3″13.1″19.2″23.4″16.5″7.2″1.8″0.2″
Bo 0.2″0.5″1.2″2.9″6.3″11.5″13.8″17.0″15.0″8.2″3.0″0.8″

Hours of Daylight in Sierra Leone

Hours of Daylight in Sierra LeoneJanFebMarAprMayJunJulAugSepOctNovDec4 hr4 hr6 hr6 hr8 hr8 hr10 hr10 hr12 hr12 hr14 hr14 hr16 hr16 hr18 hr18 hr20 hr20 hr12.611.6NowNowFreetownFreetownBoBo
The number of hours during which the Sun is at least partly above the horizon.
DaylightJanFebMarAprMayJunJulAugSepOctNovDec
Freetown 11.7h11.9h12.1h12.3h12.5h12.6h12.6h12.4h12.2h11.9h11.7h11.6h
Bo 11.7h11.9h12.1h12.3h12.5h12.6h12.5h12.4h12.2h11.9h11.8h11.7h

Chance of Muggy Conditions in Sierra Leone

Chance of Muggy Conditions in Sierra LeoneJanFebMarAprMayJunJulAugSepOctNovDec0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%1008657NowNowBoBo
The percentage of time that is muggy, oppressive, or miserable (i.e., a dew point greater than 65°F).
Muggy daysJanFebMarAprMayJunJulAugSepOctNovDec
Freetown 27.3d26.9d30.9d30.0d31.0d30.0d31.0d31.0d30.0d31.0d29.9d28.8d
Bo 18.8d22.0d28.1d28.9d30.9d30.0d31.0d31.0d30.0d31.0d29.2d22.6d

Average Wind Speed in Sierra Leone

Average Wind Speed in Sierra LeoneJanFebMarAprMayJunJulAugSepOctNovDec0 mph0 mph1 mph1 mph2 mph2 mph3 mph3 mph4 mph4 mph5 mph5 mph6 mph6 mph7 mph7 mph8 mph8 mph8.03.86.93.5NowNowFreetownFreetownBoBo
The average of mean hourly wind speeds at 10 meters above the ground.
Wind Speed (mph)JanFebMarAprMayJunJulAugSepOctNovDec
Freetown 4.65.25.75.65.26.07.47.86.54.93.94.2
Bo 4.54.75.15.04.65.36.46.75.64.43.64.1

Average Water Temperature in Sierra Leone

Average Water Temperature in Sierra LeoneJanFebMarAprMayJunJulAugSepOctNovDec79.0°F79.0°F79.5°F79.5°F80.0°F80.0°F80.5°F80.5°F81.0°F81.0°F81.5°F81.5°F82.0°F82.0°F82.5°F82.5°F83.0°F83.0°F83.5°F83.5°F84.0°F84.0°F84808380NowNowFreetownFreetownBoBo
The daily average wide-area surface water temperature.
Water Temp.JanFebMarAprMayJunJulAugSepOctNovDec
Freetown 81°F81°F81°F81°F83°F83°F81°F80°F81°F82°F84°F83°F
Bo 82°F80°F80°F82°F83°F82°F81°F80°F80°F82°F83°F83°F

Tourism Score in Sierra Leone

Tourism Score in Sierra LeoneJanFebMarAprMayJunJulAugSepOctNovDec002244668810105.42.42.6NowNowFreetownFreetownBoBo
The tourism score, which favors clear, rainless days with perceived temperatures between 65°F and 80°F.

Beach/Pool Score in Sierra Leone

Beach/Pool Score in Sierra LeoneJanFebMarAprMayJunJulAugSepOctNovDec002244668810107.83.27.53.8NowNowFreetownFreetownBoBo
The beach/pool score, which favors clear, rainless days with perceived temperatures between 75°F and 90°F.

Growing Season in Sierra Leone

Growing Season in Sierra LeoneJanFebMarAprMayJunJulAugSepOctNovDec0%0%20%20%40%40%60%60%80%80%100%100%NowNowFreetownFreetownBoBo
The percentage chance that a given day is within the growing season, defined as the longest continuous period of non-freezing temperatures (≥ 32°F) in the year (the calendar year in the Northern Hemisphere, or from July 1 until June 30 in the Southern Hemisphere).

Growing Degree Days in Sierra Leone

Growing Degree Days in Sierra LeoneJanFebMarAprMayJunJulAugSepOctNovDec2,000°F2,000°F4,000°F4,000°F6,000°F6,000°F8,000°F8,000°F10,000°F10,000°F12,000°F12,000°FNowNowFreetownFreetownBoBo
The average growing degree days accumulated over the course of the year, where growing degree days are defined as the integral of warmth above a base temperature (50°F in this case).

Average Daily Incident Shortwave Solar Energy in Sierra Leone

Average Daily Incident Shortwave Solar Energy in Sierra LeoneJanFebMarAprMayJunJulAugSepOctNovDec0 kWh0 kWh1 kWh1 kWh2 kWh2 kWh3 kWh3 kWh4 kWh4 kWh5 kWh5 kWh6 kWh6 kWh5.93.85.54.2NowNowFreetownFreetownBoBo
The average daily shortwave solar energy reaching the ground per square meter.
Solar Energy (kWh)JanFebMarAprMayJunJulAugSepOctNovDec
Freetown 5.35.75.85.44.44.04.04.24.13.94.14.8
Bo 5.35.55.34.84.34.44.44.54.44.34.44.9

This report illustrates the typical weather for Freetown and Bo year round, based on a statistical analysis of historical hourly weather reports and model reconstructions from January 1, 1980 to December 31, 2016.

The details of the data sources used on this page vary between places and are discussed in detail on each place's dedicated page:

Disclaimer

The information on this site is provided as is, without any assurances as to its accuracy or suitability for any purpose. Weather data is prone to errors, outages, and other defects. We assume no responsibility for any decisions made on the basis of the content presented on this site.

We draw particular cautious attention to our reliance on the MERRA-2 model-based reconstructions for a number of important data series. While having the tremendous advantages of temporal and spatial completeness, these reconstructions: (1) are based on computer models that may have model-based errors, (2) are coarsely sampled on a 50 km grid and are therefore unable to reconstruct the local variations of many microclimates, and (3) have particular difficulty with the weather in some coastal areas, especially small islands.

We further caution that our travel scores are only as good as the data that underpin them, that weather conditions at any given location and time are unpredictable and variable, and that the definition of the scores reflects a particular set of preferences that may not agree with those of any particular reader.

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