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
Rathkarawwa records an average high-temperature of a still warm 29.2°C (84.6°F) in January, maintaining a close correlation with December's 29°C (84.2°F). Throughout January, an average nighttime temperature of 23.9°C (75°F) is experienced.Heat index
During January, the heat index is calculated to be a tropical 34°C (93.2°F). More protective measures are required - heat exhaustion and heat cramps are likely. Heatstroke may follow lengthy activity.One should consider that heat index numbers are for shaded settings and light wind. A direct sunlight exposure may boost the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', embodies the combination of air temperature and moisture content to illustrate perceived heat. One's perception of temperature can vary depending on physical activity and individual heat sensitivity, influenced by factors like wind, attire, and metabolic variations. Given direct exposure to sunlight, one might experience a rise in the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for children. Youngsters generally face more threats than adults given their lesser ability to sweat. Coupled with their larger skin surface relative to their small bodies and higher heat production due to their activities, they are more endangered.
Humidity
The average relative humidity in January is 76%.Rainfall
In Rathkarawwa, in January, it is raining for 11.3 days, with typically 44mm (1.73") of accumulated precipitation. Throughout the year, there are 192.9 rainfall days, and 942mm (37.09") of precipitation is accumulated.Daylight
In Rathkarawwa, the average length of the day in January is 11h and 47min.On the first day of the month, sunrise is at 06:17 and sunset at 18:01. On the last day of January, sunrise is at 06:24 and sunset at 18:14 +0530.
Sunshine
The average sunshine in January is 9.2h.UV index
January through September, November and December, with an average maximum UV index of 7, are months with the highest UV index. A UV Index estimate of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV rays for average individuals.Note: The daily maximum UV index of 7 in January interprets into the following advice:
Resist extreme sun exposure. Guarding against solar damage is essential. Stay in the shade and avoid direct Sun exposure from 10 a.m. to 4 p.m., a period when UV radiation is particularly strong, noting that parasols or canopies may not offer total sun protection. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot does it get in January?
What is the average humidity in January?
How much does it rain in January?
How many hours of daylight does Rathkarawwa have in January?
What time are sunrise and sunset in January?
How many hours of sunshine does Rathkarawwa have in January?
What is the month with the highest UV index?
How high is the UV index in January?
Average temperature in January
Rathkarawwa, Sri Lanka
- Average high temperature in January: 29.2°C
The warmest month (with the highest average high temperature) is April (31.1°C).
The month with the lowest average high temperature is December (29°C).
- Average low temperature in January: 23.9°C
The month with the highest average low temperature is May (26.7°C).
The coldest month (with the lowest average low temperature) is January (23.9°C).
Average pressure in January
Rathkarawwa, Sri Lanka
- Average pressure in January: 1011.5mbar
The month with the highest atmospheric pressure is January (1011.5mbar).
The month with the lowest atmospheric pressure is May (1008.6mbar).
Average wind speed in January
Rathkarawwa, Sri Lanka
- Average wind speed in January: 16.7km/h
The windiest month (with the highest average wind speed) is June (26.4km/h).
The calmest month (with the lowest average wind speed) is November (11.7km/h).
Average humidity in January
Rathkarawwa, Sri Lanka
- Average humidity in January: 76%
The months with the highest relative humidity are November and December (79%).
The month with the lowest relative humidity is July (74%).
Average rainfall in January
Rathkarawwa, Sri Lanka
- Average rainfall in January: 44mm
The wettest month (with the highest rainfall) is November (182mm).
The driest month (with the least rainfall) is July (16mm).
Average rainfall days in January
Rathkarawwa, Sri Lanka
- Average rainfall days in January: 11.3 days
The month with the highest number of rainy days is November (25.3 days).
The month with the least rainy days is July (10.6 days).
Average daylight in January /
Average sunshine in January
Rathkarawwa, 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 June (Average sunshine: 11h and 18min).
The month with the least sunshine is December (Average sunshine: 6h and 36min).
Average sunshine days in January
Rathkarawwa, Sri Lanka
- Average sunshine days in January: 18.3 days
The month with the most sunshine days is January (18.3 days).
The month with the least sunshine days is November (3.6 days).
Average UV index in January
Rathkarawwa, Sri Lanka
- Average UV index in January: 7
The months with the highest UV index are January, February, March, April, May, June, July, August, September, November and December (UV index 7).
The month with the lowest UV index is October (UV index 6).
Average cloud cover in January
Rathkarawwa, Sri Lanka
- Average cloud cover in January: 22
The month with the most cloud cover is November (Cloud cover 40).
The month with the least cloud cover is March (Cloud cover 21).
Average visibility in January
Rathkarawwa, Sri Lanka
- Average visibility in January: 10km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October and December (10km).
The month with the lowest visibility is November (9km).
