Climate and monthly weather forecastKoidu, Sierra Leone
Climate and monthly weather forecast
The climate of Koidu
Koidu, located in Sierra Leone, experiences a predominant Tropical Monsoon climate according to the Köppen climate classification. This tropical setting results in noticeable temperature variations throughout the year, with minimums floating between 17.6°C (63.7°F) and 22.1°C (71.8°F), and maximums hovering between 26.1°C (79°F) to 36.1°C (97°F).The city experiences relatively high humidity throughout the year with percentages fluctuating between 49% and 94%. Rainfall is a significant characteristic of Koidu’s weather, with continuous and heavy rain showers hitting the city, predominantly in the middle of the year. The city records rainfall varying from a scant 7mm (0.28") in December to a massive 319mm (12.56") in August.
The cloudiness is directly proportional to the increased rainfall, with cloud cover elevating from 13% in January to a maximum of 87% in August. Daylight hours scarcely fluctuate through the year, between a minimum of 11.6 hours in December to a high of 12.6 hours from June to July. However, the sunshine hours can vary significantly, with as low as 3 hours in August to as much as 9.8 hours in January.
The best time to visit Koidu
The ideal time to visit Koidu is during the dry season from November to February. During these months, the city witnesses lower volumes of rainfall, with November recording 83mm (3.27") of rainfall and February only 8mm (0.31"). Furthermore, the humidity is at its lowest during these months, making the atmosphere comfortable for outdoor activities. In addition, during this season the city enjoys an average of 9.8 hours of sunlight daily, offering ample daylight for sightseeing and exploration.The worst time to visit Koidu
Travelers might want to avoid Koidu during the peak rainfall months, from June to October. The city encounters a massive shift in rainfall during these months with a staggering 285mm (11.22") to 319mm (12.56") on average. Adding to this, the city no longer has a sunny atmosphere, with sunshine hours dropping to a low 3 hours to 4 hours daily.Spring weather in Koidu
In Koidu, spring spans March to May, characterized by a distinct increase in rainfall. Starting with a moderate 51mm (2.01") in March, the rainfall increases to 166mm (6.54") by May. Accompanying the increasing rainfall, the city also experiences an elevated humidity level, reaching up to 84% by May.Summer weather in Koidu
Marked by extremely high rainfall, summer in Koidu, June through August, is predominantly wet. Rainfall peaks in August with total precipitation of 319mm (12.56"). The minimal temperature during this season remains consistently above 20°C (68°F), with the maximum temperature reaching 29.3°C (84.7°F) in June, and gradually reducing to 26.1°C (79°F) by August.Autumn weather in Koidu
During the autumn months of September to November, rainfall decreases gradually from 297mm (11.69") in September to 83mm (3.27") in November. Temperatures show a slight increase, with maximum temperatures ranging from 27.5°C (81.5°F) in September to 30.4°C (86.7°F) in November, crafting an atmosphere of warmth and relief after the wet summer.Winter weather in Koidu
Winter months in Koidu, from December to February, are marked by the least rainfall, and predominantly sunny days. January is the driest month with a mere 8mm (0.31") rainfall. The temperatures vary between a comfortable range of 17.6°C (63.7°F) to 22.1°C (71.8°F) for minimums and 31.4°C (88.5°F) to 35.5°C (95.9°F) for maximums. This delightful temperate and dry weather makes winter an ideal time to explore Koidu.Weather in January
The onset of the year in Koidu sees relatively moderate climatic conditions. January experiences softer rain, making it comfortable for sightseeing and exploration, although it does come after the colder, drier December. The average high temperature rises to 33.8°C (92.8°F) and humidity is at a moderate 49%. Weather in January »Weather in February
While January wraps up with a calmness in the weather, February gradually paves way for an increase in humidity and temperature. Warming signs of the upcoming rainy season are felt with an increase in rainfall to 12mm (0.47"), a gentle reminder of the approaching wet season. Weather in February »Weather in March
As March approaches, Koidu starts to experience a noticeable transformation in weather conditions. A dramatic increase in rainfall to 51mm (2.01") signifies the onset of the wet season. Subsequently, humidity levels edge up even further. Weather in March »Weather in April
April in Koidu is marked by dense cloud cover and a significant jump in rainfall, reaching 100mm (3.94"). This signifies the full advent of the rainy season. Intensified by an increase in humidity and limited sunshine, April witnesses fewer clear days. Weather in April »Weather in May
May bears the hallmarks of a typical wet season in Koidu, distinguished by the highest rainfall recorded in the year at 166mm (6.54"). Accompanying the substantial rainfall, the city also witnesses a spike in humidity levels. The severely limited sunshine, paired with increased cloud coverage, augments the moist conditions. Weather in May »Weather in June
June continues to embrace the striking attributes of the wet season set by May. The rainfall at its peak level along with humidity, reaches 171mm (6.73") and 89% respectively. The amount of daylight remains largely unchanged, yet dense clouds keep the sun's glare to a minimum, resulting in subdued sunshine levels. Weather in June »Weather in July
July, maintaining the weather trends observed in June, exhibits a slight increase in humidity and rainfall, climaxing at 92% and 285mm (11.22"), respectively. The month is characterized by extensive cloud cover, reducing visibility. Weather in July »Weather in August
August, the eighth month in Koidu, conforms to the existing weather data set by July. The highest recorded rainfall of 319mm (12.56") undoubtedly makes it the wettest month of the year. On average, the daily sunshine is limited, contributing to a prevalent environment of moisture and dampness. Weather in August »Weather in September
In the city of Koidu, September marks the beginning of the departure from the rainy season. The noticeable decrease in rainfall validates this change, dropping to 297mm (11.69"). The cloud coverage retreats a little, allowing a slight increase in sunshine hours. Weather in September »Weather in October
October brings a palpable shift in Koidu's climatic conditions compared to previous months. Rainfall falls to a considerable 205mm (8.07"), confirming the recession of the wet season. As the humidity starts to drop, it enhances overall visibility. Weather in October »Weather in November
November in Koidu carries the clear marks of the retreating rainy season. A considerable drop in rainfall, down to 83mm (3.27"), signals the drier weather looming on the horizon. An increase in sunshine duration accompanies the prevailing pleasant weather, favoring tourism and outdoor activities. Weather in November »Weather in December
December in Koidu sees a welcome change to warm and dry conditions. The rainfall dramatically recedes to a mere 7mm (0.28"), marking the reinstatement of the dry season after a long and humid wet season. Although the temperature remains on the lower side, the amount of sunshine increases, making it ideal for outdoor activities. Weather in December »Updated: Jul 13, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
January is the least humid month, with an average relative humidity of 49%.
In Koidu, Sierra Leone, during the entire year, the rain falls for 252.4 days and collects up to 1704mm (67.09") of precipitation.
The month with the most sunshine is January, with an average of 9.8h of sunshine.
January through March, with an average maximum UV index of 7, are months with the highest UV index.
March, noted for its average high-temperature of 36.1°C (97°F) and an average low-temperature of 21.1°C (70°F), is considered the warmest month.
With an average of 12h and 36min of daylight, June has the longest days of the year.
June through August and October, with an average maximum UV index of 5, are months with the lowest UV index.
The coldest period tends to be August, when average temperatures fluctuate between a high of 26.1°C (79°F) and a low of 20.6°C (69.1°F).
August is the most humid month in Koidu, with an average relative humidity of 94%.
The month with the most rainfall is August, when the rain falls for 30.8 days and typically aggregates up to 319mm (12.56") of precipitation.
August has the least sunshine of the year, with an average of 3h of sunshine.
December is the month with the least rainfall. Rain falls for 3.3 days and accumulates 7mm (0.28") of precipitation.
December has the shortest days of the year, with an average of 11h and 36min of daylight.
Koidu does not utilize Daylight Saving Time (DST). GMT timezone is used over the entire year.
Average temperature
Koidu, Sierra Leone
The warmest month (with the highest average high temperature) is March (36.1°C).
The month with the lowest average high temperature is August (26.1°C).
The month with the highest average low temperature is April (22.1°C).
The coldest month (with the lowest average low temperature) is December (17.5°C).
Average pressure
Koidu, Sierra Leone
- Average pressure in January:
1011.8mbar - Average pressure in February:
1010.7mbar - Average pressure in March:
1010.6mbar - Average pressure in April:
1010.7mbar - Average pressure in May:
1012.1mbar - Average pressure in June:
1013.8mbar
- Average pressure in July:
1014.3mbar - Average pressure in August:
1014mbar - Average pressure in September:
1013.4mbar - Average pressure in October:
1012.2mbar - Average pressure in November:
1011.5mbar - Average pressure in December:
1011.8mbar
The month with the highest atmospheric pressure is July (1014.3mbar).
The month with the lowest atmospheric pressure is March (1010.6mbar).
Average wind speed
Koidu, Sierra Leone
- Average wind speed in January:
4.5km/h - Average wind speed in February:
4.8km/h - Average wind speed in March:
5.3km/h - Average wind speed in April:
5.5km/h - Average wind speed in May:
4.9km/h - Average wind speed in June:
4.8km/h
- Average wind speed in July:
5.1km/h - Average wind speed in August:
5.3km/h - Average wind speed in September:
4.3km/h - Average wind speed in October:
3.5km/h - Average wind speed in November:
3.3km/h - Average wind speed in December:
4.2km/h
The windiest month (with the highest average wind speed) is April (5.5km/h).
The calmest month (with the lowest average wind speed) is November (3.3km/h).
Average humidity
Koidu, Sierra Leone
The month with the highest relative humidity is August (94%).
The month with the lowest relative humidity is January (49%).
Average rainfall
Koidu, Sierra Leone
- Average rainfall in January:
8mm - Average rainfall in February:
12mm - Average rainfall in March:
51mm - Average rainfall in April:
100mm - Average rainfall in May:
166mm - Average rainfall in June:
171mm
The wettest month (with the highest rainfall) is August (319mm).
The driest month (with the least rainfall) is December (7mm).
Average rainfall days
Koidu, Sierra Leone
- Average rainfall days in January:
3.3 days - Average rainfall days in February:
5.4 days - Average rainfall days in March:
17.3 days - Average rainfall days in April:
22.3 days - Average rainfall days in May:
28.8 days - Average rainfall days in June:
29.5 days
- Average rainfall days in July:
30.6 days - Average rainfall days in August:
30.8 days - Average rainfall days in September:
30 days - Average rainfall days in October:
30.5 days - Average rainfall days in November:
20.6 days - Average rainfall days in December:
3.3 days
The month with the highest number of rainy days is August (30.8 days).
The months with the least rainy days are January and December (3.3 days).
Average daylight / Average sunshine
Koidu, Sierra Leone
- Average daylight in January:
11h and 42min - Average daylight in February:
11h and 54min - Average daylight in March:
12h and 6min - Average daylight in April:
12h and 18min - Average daylight in May:
12h and 30min - Average daylight in June:
12h and 36min
- Average daylight in July:
12h and 36min - Average daylight in August:
12h and 24min - Average daylight in September:
12h and 12min - Average daylight in October:
11h and 54min - Average daylight in November:
11h and 42min - Average daylight in December:
11h and 36min
The month with the longest days is June (Average daylight: 12h and 36min).
The month with the shortest days is December (Average daylight: 11h and 36min).
- Average sunshine in January:
9h and 48min - Average sunshine in February:
9h and 42min - Average sunshine in March:
9h and 18min - Average sunshine in April:
8h and 42min - Average sunshine in May:
7h and 6min - Average sunshine in June:
5h and 36min
- Average sunshine in July:
4h and 0min - Average sunshine in August:
3h and 0min - Average sunshine in September:
4h and 54min - Average sunshine in October:
6h and 54min - Average sunshine in November:
8h and 42min - Average sunshine in December:
9h and 42min
The month with the most sunshine is January (Average sunshine: 9h and 48min).
The month with the least sunshine is August (Average sunshine: 3h and 0min).
Average sunshine days
Koidu, Sierra Leone
- Average sunshine days in January:
26.1 days - Average sunshine days in February:
21.3 days - Average sunshine days in March:
10.8 days - Average sunshine days in April:
5.7 days - Average sunshine days in May:
0.6 days - Average sunshine days in June:
0.1 days
- Average sunshine days in July:
0.3 days - Average sunshine days in August:
0.2 days - Average sunshine days in September:
0 days - Average sunshine days in October:
0.3 days - Average sunshine days in November:
6 days - Average sunshine days in December:
25.7 days
The month with the most sunshine days is January (26.1 days).
The month with the least sunshine days is September (0 days).
Average UV index
Koidu, Sierra Leone
The months with the highest UV index are January, February and March (UV index 7).
The months with the lowest UV index are June, July, August and October (UV index 5).
Average cloud cover
Koidu, Sierra Leone
The month with the most cloud cover is August (Cloud cover 87).
The month with the least cloud cover is January (Cloud cover 13).
Average visibility
Koidu, Sierra Leone
The months with the highest visibility are January, February, March and December (9km).
The months with the lowest visibility are August and September (5km).
