Contents
- Weather in January
- Frequently asked questions
- Average temperature in January
- Average pressure in January
- Average wind speed in January
- Average humidity in January
- Average rainfall in January
- Average rainfall days in January
- Average daylight in January
- Average sunshine in January
- Average sunshine days in January
- Average UV index in January
- Average cloud cover in January
- Average visibility in January
January
Weather in January
Temperature
January, marked by an average high-temperature of 31.4°C (88.5°F) and a low-temperature of 24.1°C (75.4°F), is the warmest month.Heat index
January's average heat index is computed to be a very hot 38°C (100.4°F). Implement additional safety measures to avoid heat cramps and heat exhaustion. Persistent activity might trigger heatstroke.Records show heat index calculations are tailored for shaded regions and mild winds. Exposure to the direct sun could elevate the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'feels like', arises from combining readings of air temperature and relative moisture content. A person's impression of weather can be shaped by many aspects, among them metabolic variations, pregnancy, and levels of physical activity. When directly under the sun, the weather's impact can intensify, possibly boosting the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical for babies and toddlers. Children often fail to understand the importance of rest and rehydration. Thirst is a late manifestation of dehydration - hence, it is crucial to stay hydrated, especially during ongoing physical activities.
To cool down, the human body relies on perspiration, a process where excessive heat is eliminated as sweat evaporates. An upsurge in relative humidity affects normal body cooling mechanisms by slowing evaporation, hence reducing the rate at which the body cools and intensifying the perception of heat. Heat-related disorders may develop if heat gain in the body overshadows its cooling capacity, leading to elevated temperatures.
Humidity
The least humid month is January, with an average relative humidity of 68%.Rainfall
In January, the rain falls for 1.4 days. Throughout January, 2mm (0.08") of precipitation is accumulated. In Rowal, during the entire year, the rain falls for 205.9 days and collects up to 1507mm (59.33") of precipitation.Daylight
The average length of the day in January is 11h and 43min.On the first day of the month, sunrise is at 07:05 and sunset at 18:44. On the last day of January, sunrise is at 07:11 and sunset at 18:57 GMT.
Sunshine
In January, the average sunshine 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 unprotected exposure to Sun's UV rays for the average person.Note: The maximum daily UV index, 7 in January, converts into the following recommendations:
Avoid excessive sunlight. Those with lighter skin may experience burning in less than 20 minutes. Remember that the sun's UV radiation is strongest between 10 a.m. and 4 p.m. Make an effort to avoid direct sun exposure during these hours. Enhance your sun protection with tightly woven, yet airy clothing.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the warmest month?
How hot is January?
What is the least humid month?
What is the average humidity in January?
How much does it rain in January?
How many hours of daylight does Rowal have in January?
When are sunrise and sunset in January in Rowal?
How long on average sun shines in January?
What are the months with the highest UV index?
What is the UV index reading in January?
Average temperature in January
Rowal, 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
Rowal, 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
Rowal, 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
Rowal, 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
Rowal, 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
Rowal, 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
Rowal, Sierra Leone
- Average daylight in January: 11h and 4min
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 42min).
- Average sunshine in January: 9h and 5min
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
Rowal, 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
Rowal, 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
Rowal, 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
Rowal, 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).
