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
January's beginning signals an average high-temperature of a hot 30.8°C (87.4°F), barely different from December's 29.9°C (85.8°F). An average low-temperature of 22.8°C (73°F) is noted during the nights in January in Periyamulla.Heat index
For most parts of January, the heat index is estimated at a very hot 38°C (100.4°F). Heightened safety actions are necessary, heat cramps and heat exhaustion are probable. Persistent activity may lead to heatstroke.Factoring in the heat index, values are geared towards shaded areas with light breezes. When under direct sunshine, the heat index may be elevated by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', unifies temperature and humidity readings to offer a comprehensive feel of warmth. The influence of weather is personal, differing among a variety of individuals based on differences in body mass, stature, and the level of physical activity. When in direct sunlight, one should be cautious as it can raise the heat index by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical for 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 primary way humans combat excessive warmth is by perspiring, letting sweat evaporate and cool the body. High relative humidity reduces the evaporation rate, resulting in a lower heat removal rate from the body, causing the perception of being overheated. When heat surpasses the body's release mechanisms, dehydration and overheating risks become pronounced.
Humidity
The months with the lowest humidity in Periyamulla are January and February, with an average relative humidity of 73%.Rainfall
The month with the least rainfall in Periyamulla is January, when the rain falls for 9.7 days and typically collects 29mm (1.14") of precipitation.Daylight
In January, the average length of the day is 11h and 46min.On the first day of January in Periyamulla, sunrise is at 06:22 and sunset at 18:05. On the last day of the month, sunrise is at 06:29 and sunset at 18:18 +0530.
Sunshine
January through April, with an average of 9.2h of sunshine, are months with the most sunshine.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. A UV Index reading of 6 to 7 represents a high threat to health from unsafe exposure to UV radiation for the average person.Note: In January, the maximum UV index of 7 suggests this advice:
Inhibit overexposure. Warding off sun damage is of utmost importance. 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. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot is it in Periyamulla in January?
What are the least humid months in Periyamulla?
What is the average humidity in January in Periyamulla?
What is the driest month in Periyamulla?
How much does it rain in Periyamulla in January?
How many hours of daylight does Periyamulla have in January?
What time are sunrise and sunset in January in Periyamulla?
What is the month with the most sunshine in Periyamulla?
How long on average sun shines in January in Periyamulla?
When is the highest UV index in Periyamulla?
What is the UV index reading in January in Periyamulla?
Average temperature in January
Periyamulla, Sri Lanka
- Average high temperature in January: 30.8°C
The warmest month (with the highest average high temperature) is March (32.1°C).
The month with the lowest average high temperature is July (29.2°C).
- Average low temperature in January: 22.8°C
The month with the highest average low temperature is May (26.4°C).
The coldest month (with the lowest average low temperature) is January (22.8°C).
Average pressure in January
Periyamulla, Sri Lanka
- Average pressure in January: 1011.7mbar
The month with the highest atmospheric pressure is January (1011.7mbar).
The months with the lowest atmospheric pressure are May and June (1008.4mbar).
Average wind speed in January
Periyamulla, Sri Lanka
- Average wind speed in January: 16.2km/h
The windiest month (with the highest average wind speed) is June (18.3km/h).
The calmest month (with the lowest average wind speed) is March (9.1km/h).
Average humidity in January
Periyamulla, Sri Lanka
- Average humidity in January: 73%
The months with the highest relative humidity are June, July and August (82%).
The months with the lowest relative humidity are January and February (73%).
Average rainfall in January
Periyamulla, Sri Lanka
- Average rainfall in January: 29mm
The wettest month (with the highest rainfall) is June (231mm).
The driest month (with the least rainfall) is January (29mm).
Average rainfall days in January
Periyamulla, Sri Lanka
- Average rainfall days in January: 9.7 days
The month with the highest number of rainy days is August (28.4 days).
The month with the least rainy days is January (9.7 days).
Average daylight in January /
Average sunshine in January
Periyamulla, 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 months with the most sunshine are January, February, March and April (Average sunshine: 9h and 12min).
The month with the least sunshine is November (Average sunshine: 6h and 36min).
Average sunshine days in January
Periyamulla, Sri Lanka
- Average sunshine days in January: 20 days
The month with the most sunshine days is January (20 days).
The month with the least sunshine days is August (1.2 days).
Average UV index in January
Periyamulla, 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
Periyamulla, Sri Lanka
- Average cloud cover in January: 21
The month with the most cloud cover is June (Cloud cover 57).
The month with the least cloud cover is January (Cloud cover 21).
Average visibility in January
Periyamulla, Sri Lanka
- Average visibility in January: 10km
The months with the highest visibility are January, February, March, April, June, July, September and December (10km).
The months with the lowest visibility are May, August, October and November (9km).
Periyamulla, Sri Lanka
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