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
Weather in January
Temperature
Entering January, the average high-temperature is recorded at a tropical 30.8°C (87.4°F), exhibiting a minimal shift from December's 29.9°C (85.8°F). Throughout January, the average low-temperature dips to a warm 23.1°C (73.6°F).Heat index
The heat index value for January is evaluated at a fiery hot 38°C (100.4°F). Take additional safety steps, risk of heat exhaustion and heat cramps is notable. Prolonged activity may cause heatstroke.It is crucial to understand that heat index figures are for shade and gentle wind conditions. Direct sunlight can potentially boost the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'feels like', is calculated by taking the relative humidity value for a specific location and factoring it into the air temperature reading. An individual's perception of weather can be swayed by a variety of elements including metabolic differences, pregnancy status, and their level of physical exertion. Exposure to direct sun rays can influence the heat you feel, pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values are largely significant for babies and toddlers. Young kids are often more at risk than adults as they tend to perspire less. Besides, their skin surface is larger relative to their small bodies, and their increased heat output from their active lifestyle compounds their risk.
By perspiring, the human body can shed its excessive warmth since evaporated sweat cools it off. When air moisture content is high, the cooling process through evaporation is not as efficient, leading to an ineffective body cooling process and a feeling of overheating. When the body's heat gain surpasses its removal capacity, body temperature starts to climb, leading to potential heat-related ailments.
Humidity
January and February, with an average relative humidity of 74%, are the least humid months.Rainfall
The month with the least rainfall in Weliweriya is January, when the rain falls for 11.6 days and typically collects 40mm (1.57") of precipitation.Daylight
In Weliweriya, the average length of the day in January is 11h and 46min.On the first day of January, sunrise is at 06:21 and sunset at 18:04. On the last day of the month, sunrise is at 06:28 and sunset at 18:17 +0530.
Sunshine
With an average of 9.1h of sunshine, January has the most sunshine of the year in Weliweriya.UV index
January through April, July, September, November and December, with an average maximum UV index of 7, are months with the highest UV index in Weliweriya. A UV Index reading of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV rays for the average person.Note: The daily high UV index of 7 in January translates into this advice:
Apply measures and align with sun safety principles. Safeguarding against skin and eye injury is pivotal. The Sun's UV radiation is most potent between the hours of 10 a.m. and 4 p.m. Try to avoid direct sunlight during this time. Counter UV radiation's ill effects with clothing designed for sun safety and UV-resistant eyewear.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Is it hot in Weliweriya during January?
What are the least humid months in Weliweriya?
What is the average humidity in January in Weliweriya?
What is the driest month in Weliweriya?
How much does it rain in Weliweriya in January?
How many hours of daylight does Weliweriya have in January?
When is the sunrise / sunset in January in Weliweriya?
What month has the most sunshine in Weliweriya?
How long on average sun shines in January in Weliweriya?
What is the month with the highest UV index in Weliweriya?
How high is the UV index in January in Weliweriya?
Average temperature in January
Weliweriya, Sri Lanka
- Average high temperature in January: 30.8°C
The warmest months (with the highest average high temperature) are March and April (31.8°C).
The months with the lowest average high temperature are July and August (28.9°C).
- Average low temperature in January: 23.1°C
The month with the highest average low temperature is May (26.3°C).
The coldest month (with the lowest average low temperature) is January (23.1°C).
Average pressure in January
Weliweriya, Sri Lanka
- Average pressure in January: 1011.6mbar
The month with the highest atmospheric pressure is January (1011.6mbar).
The month with the lowest atmospheric pressure is May (1008.6mbar).
Average wind speed in January
Weliweriya, Sri Lanka
- Average wind speed in January: 12.8km/h
The windiest month (with the highest average wind speed) is June (15.1km/h).
The calmest month (with the lowest average wind speed) is March (8km/h).
Average humidity in January
Weliweriya, Sri Lanka
- Average humidity in January: 74%
The months with the highest relative humidity are June, July and August (83%).
The months with the lowest relative humidity are January and February (74%).
Average rainfall in January
Weliweriya, Sri Lanka
- Average rainfall in January: 40mm
The wettest month (with the highest rainfall) is June (341mm).
The driest month (with the least rainfall) is January (40mm).
Average rainfall days in January
Weliweriya, Sri Lanka
- Average rainfall days in January: 11.6 days
The month with the highest number of rainy days is August (30.2 days).
The month with the least rainy days is January (11.6 days).
Average daylight in January /
Average sunshine in January
Weliweriya, Sri Lanka
- Average daylight in January: 11h and 5min
The month with the longest days is June (Average daylight: 12h and 30min).
The month with the shortest days is December (Average daylight: 11h and 42min).
- Average sunshine in January: 9h and 1min
The month with the most sunshine is January (Average sunshine: 9h and 6min).
The month with the least sunshine is November (Average sunshine: 6h and 42min).
Average sunshine days in January
Weliweriya, Sri Lanka
- Average sunshine days in January: 17.2 days
The month with the most sunshine days is January (17.2 days).
The months with the least sunshine days are June and August (0.3 days).
Average UV index in January
Weliweriya, Sri Lanka
- Average UV index in January: 7
The months with the highest UV index are January, February, March, April, July, September, November and December (UV index 7).
The months with the lowest UV index are May, June, August and October (UV index 6).
Average cloud cover in January
Weliweriya, Sri Lanka
- Average cloud cover in January: 24
The month with the most cloud cover is June (Cloud cover 57).
The month with the least cloud cover is January (Cloud cover 24).
Average visibility in January
Weliweriya, Sri Lanka
- Average visibility in January: 10km
The months with the highest visibility are January, February, March, April and December (10km).
The months with the lowest visibility are May, June, July, August, September, October and November (9km).
Weliweriya, Sri Lanka
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