January weather forecastJui, Sierra Leone

January

Weather in January

January, like December, is another tropical winter month in Jui, Sierra Leone, with an average temperature fluctuating between 31.4°C (88.5°F) and 24.1°C (75.4°F).

Temperature

January brings the highest temperatures, with an average high of 31.4°C (88.5°F) and an average low of 24.1°C (75.4°F).

Heat index

During January, the heat index is evaluated at a very hot 38°C (100.4°F). Extra precautions are necessary, heat cramps and heat exhaustion are plausible outcomes. Extended activity could lead to heatstroke.
Realize that the values for the heat index are set for shaded places and light winds. The heat index has the possibility to be enhanced by 15 Fahrenheit (8 Celsius) degrees when there is direct sun exposure.
Note: The heat index, also known as 'real feel' or 'feels like', is an index that combines air temperature and relative humidity to determine the human-perceived temperature equivalent. A person's impression of weather can be swayed by numerous aspects, among them metabolic variations, pregnancy, and activity levels. Direct sunlight can potentially raise the heat index by 15 Fahrenheit (8 Celsius) degrees, so it's crucial to consider. Heat index values are extremely vital to babies and toddlers. Young children are more at risk than adults since they tend to sweat less. Moreover, their large skin surface in proportion to their small bodies and the high heat production due to their activities contribute to their vulnerability.
The body's inherent cooling system operates through perspiration, wherein evaporating sweat offsets excessive heat. An increase in relative humidity retards evaporation, subsequently reducing the body's heat removal rate and leading to a sensation of being overly warm. Overheating risks increase with rising body temperatures, especially if heat release isn't efficient.

Humidity

With an average relative humidity of 68%, January is the least humid month.

Rainfall

In Jui, in January, during 1.4 rainfall days, 2mm (0.08") of precipitation is typically accumulated. In Jui, Sierra Leone, during the entire year, the rain falls for 205.9 days and collects up to 1507mm (59.33") of precipitation.

Daylight

In January, the average length of the day in Jui is 11h and 42min.
On the first day of January, sunrise is at 07:06 and sunset at 18:45. On the last day of the month, sunrise is at 07:12 and sunset at 18:58 GMT.

Sunshine

In Jui, Sierra Leone, the average sunshine in January is 9.8h.

UV index

The months with the highest UV index are January through June, September through December, with an average maximum UV index of 7. A UV Index of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV rays for the ordinary person.
Note: A maximum UV index of 7 in January translates into the following recommendations:
Shun overexposure. Protection from sun ravages is indispensable. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. Your best bet for sun defense on the face, eyes, and neck is a hat with a wide brim.

Updated: Jan 27, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

Jui's temperatures peak on average in January, reaching 31.4°C (88.5°F) at their highest and 24.1°C (75.4°F) at their lowest.

The high-temperature during January is 31.4°C (88.5°F) and the low-temperature is 24.1°C (75.4°F). In January, the average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), which represents the influence of relative humidity on air temperature, is evaluated at 38°C (100.4°F).

January is the least humid month in Jui, Sierra Leone, with an average relative humidity of 68%.

In Jui, Sierra Leone, the average relative humidity in January is 68%.

In Jui, in January, it is raining for 1.4 days, with typically 2mm (0.08") of accumulated precipitation.

In January, the average day length is 11h and 42min.

On the first day of January, sunrise is at 07:06 and sunset at 18:45. On the last day of the month, sunrise is at 07:12 and sunset at 18:58 GMT.

In January, the average sunshine duration in Jui is 9.8h.

The months with the highest UV index in Jui, Sierra Leone, are January through June, September through December, with an average maximum UV index of 7.

The average daily maximum UV index in January in Jui is 7. A UV Index reading of 6 to 7 represents a high health risk from unsafe exposure to Sun's UV rays.

Today

Tomorrow

Long-term

Year January F M A M J J A S O N D

Dec

January

Feb

Average high temperature

31°C

31.4°C

31.3°C

Average low temperature

Average pressure

Average wind speed

Average max. wind speed

8.7km/h

10.5km/h

11.9km/h

Average wind speed gusts

Average humidity

Average rainfall

Average rainfall days

Average daylight

Average sunshine

Average sunshine days

25.5

27.2

Average UV index

Average cloud cover

12%

11%

Average visibility

10km

Average temperature in January
Jui, Sierra Leone

Average high temperature in January: 31.4°C

The warmest month (with the highest average high temperature) is January (31.4°C).
The month with the lowest average high temperature is August (27.3°C).

Average low temperature in January: 24.1°C

The month with the highest average low temperature is May (26.2°C).
The coldest month (with the lowest average low temperature) is August (23.9°C).

Average pressure in January
Jui, Sierra Leone

Average pressure in January: 1011.2mbar

The month with the highest atmospheric pressure is July (1013.8mbar).
The months with the lowest atmospheric pressure are February and March (1010.4mbar).

Average wind speed in January
Jui, Sierra Leone

Average wind speed in January: 9.3km/h

The windiest month (with the highest average wind speed) is August (12km/h).
The calmest month (with the lowest average wind speed) is November (6.8km/h).

Average humidity in January
Jui, Sierra Leone

Average humidity in January: 68%

The month with the highest relative humidity is August (86%).
The month with the lowest relative humidity is January (68%).

Average rainfall in January
Jui, Sierra Leone

Average rainfall in January: 2mm

The wettest month (with the highest rainfall) is August (391mm).
The driest month (with the least rainfall) is February (1mm).

Average rainfall days in January
Jui, Sierra Leone

Average rainfall days in January: 1.4 days

The month with the highest number of rainy days is July (30.3 days).
The month with the least rainy days is February (0.8 days).

Average daylight in January /
Average sunshine in January
Jui, Sierra Leone

Average daylight in January: 11h and 42min

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

The month with the most sunshine is February (Average sunshine: 9h and 54min).
The month with the least sunshine is August (Average sunshine: 4h and 48min).

Average sunshine days in January
Jui, Sierra Leone

Average sunshine days in January: 29 days

The month with the most sunshine days is January (29 days).
The month with the least sunshine days is August (0.5 days).

Average UV index in January
Jui, Sierra Leone

Average UV index in January: 7

The months with the highest UV index are January, February, March, April, May, June, September, October, November and December (UV index 7).
The months with the lowest UV index are July and August (UV index 6).

Average cloud cover in January
Jui, Sierra Leone

Average cloud cover in January: 12

The month with the most cloud cover is August (Cloud cover 67).
The month with the least cloud cover is February (Cloud cover 11).

Average visibility in January
Jui, Sierra Leone

Average visibility in January: 10km

The months with the highest visibility are January, February, March, April, May, June, October, November and December (10km).
The months with the lowest visibility are July, August and September (9km).