January weather forecast
Kaldemulla, Sri Lanka

January

Weather in January

January in Kaldemulla, Sri Lanka, is a hot winter month, with an average temperature fluctuating between 23.3°C (73.9°F) and 30.3°C (86.5°F).

Temperature

With the transition into January, Kaldemulla notes an average high-temperature of a tropical 30.3°C (86.5°F), closely resembling December. During January, Kaldemulla records an average temperature of 23.3°C (73.9°F) at night.

Heat index

Throughout January, the heat index is appraised at a sweltering 37°C (98.6°F). Take greater precautions, heat exhaustion and heat cramps may be expected. Heatstroke could result from lengthy activity.
The heat index's values are generally associated with conditions in shade and light breezes. The direct sun can potentially cause the heat index to increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', is a numerical representation of warmth when taking temperature and moisture levels into account. A person's impression of weather can be affected by numerous aspects, among them metabolic variations, pregnancy, and activity levels. When you're directly under the sun's rays, remember that the heat index may surge by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for children. Young individuals are generally in more danger than adults due to their lower capacity to sweat. Moreover, their large skin surface in relation to their small bodies and the increased heat generation from their activities makes them more vulnerable.
The human body keeps its cool primarily through perspiration, as this process enables sweat to evaporate, taking away the excess heat. During high air temperature and humidity (high heat index), the process of perspiration is hindered, intensifying the sensation of heat. If heat absorption exceeds the body's cooling ability, body temperature can elevate, resulting in potential thermal illnesses.

Humidity

The least humid month in Kaldemulla, Sri Lanka, is January, with an average relative humidity of 74%.

Rainfall

The month with the least rainfall in Kaldemulla is January, when the rain falls for 11.2 days and typically collects 37mm (1.46") of precipitation.

Daylight

In January, the average length of the day in Kaldemulla is 11h and 47min.
On the first day of the month, sunrise is at 06:21 and sunset at 18:05. On the last day of January, in Kaldemulla, sunrise is at 06:28 and sunset at 18:18 +0530.

Sunshine

With an average of 9.2h of sunshine, January has the most sunshine of the year.

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 Kaldemulla. A UV Index value of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV radiation for the ordinary person.
Note: The average daily UV index of 7 in January transforms into the following instructions:
Persist with safeguards and heed sun safety doctrines. Keeping sunburn at bay is of prime importance. During the period from 10 a.m. to 4 p.m., UV radiation is highest. Try to avoid direct sunlight during these hours. To cut down UV radiation exposure by about half, sport a wide-brim hat.

Frequently asked questions

How hot is January in Kaldemulla?
During January, Kaldemulla experiences an average high-temperature of 30.3°C (86.5°F) and a low-temperature of 23.3°C (73.9°F). The average heat index (a.k.a. 'felt air temperature', 'feels like'), which combines relative humidity and air temperature, in January is appraised at 37°C (98.6°F).
What is the least humid month in Kaldemulla?
With an average relative humidity of 74%, January is the least humid month in Kaldemulla.
What is the average humidity in January in Kaldemulla?
In Kaldemulla, Sri Lanka, the average relative humidity in January is 74%.
What is the driest month in Kaldemulla?
January is the month with the least rainfall in Kaldemulla. Rain falls for 11.2 days and accumulates 37mm (1.46") of precipitation.
How much does it rain in Kaldemulla in January?
In Kaldemulla, Sri Lanka, in January, during 11.2 rainfall days, 37mm (1.46") of precipitation is typically accumulated.
How many hours of daylight does Kaldemulla have in January?
In January, the average day length in Kaldemulla, Sri Lanka, is 11h and 47min.
When are sunrise and sunset in January in Kaldemulla?
On the first day of January in Kaldemulla, sunrise is at 06:21 and sunset at 18:05. On the last day of the month, sunrise is at 06:28 and sunset at 18:18 +0530.
What month has the most sunshine in Kaldemulla?
January has the most sunshine of the year in Kaldemulla, Sri Lanka, with an average of 9.2h of sunshine.
How long on average sun shines in January in Kaldemulla?
In Kaldemulla, the average sunshine duration in January is 9.2h.
When is the highest UV index in Kaldemulla?
The months with the highest UV index in Kaldemulla are January through April, July, September, November and December, with an average maximum UV index of 7.
What is the UV index intensity in January in Kaldemulla?
In January, the average daily maximum UV index in Kaldemulla is 7. A UV Index reading of 6 to 7 represents a high hazard to health from unprotected exposure to UV radiation.
Average high temperature
Average low temperature
Average wind speed
Average max. wind speed
Average wind speed gusts
Average humidity
Average rainfall
Average rainfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility
Average temperature in January
Kaldemulla, Sri Lanka
  • Average high temperature in January: 30.3°C

The warmest months (with the highest average high temperature) are March and April (31.4°C).
The month with the lowest average high temperature is August (28.6°C).

  • Average low temperature in January: 23.3°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 (23.3°C).

Average pressure in January
Kaldemulla, 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
Kaldemulla, Sri Lanka
  • Average wind speed in January: 12.7km/h

The windiest month (with the highest average wind speed) is June (15.9km/h).
The calmest month (with the lowest average wind speed) is March (8km/h).

Average humidity in January
Kaldemulla, Sri Lanka
  • Average humidity in January: 74%

The months with the highest relative humidity are June, July and August (83%).
The month with the lowest relative humidity is January (74%).

Average rainfall in January
Kaldemulla, Sri Lanka
  • Average rainfall in January: 37mm

The wettest month (with the highest rainfall) is June (329mm).
The driest month (with the least rainfall) is January (37mm).

Average rainfall days in January
Kaldemulla, Sri Lanka
  • Average rainfall days in January: 11.2 days

The month with the highest number of rainy days is August (29.8 days).
The month with the least rainy days is January (11.2 days).

Average daylight in January /
Average sunshine in January
Kaldemulla, 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 12min).
The month with the least sunshine is November (Average sunshine: 6h and 36min).

Average sunshine days in January
Kaldemulla, 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 July (0.4 days).

Average UV index in January
Kaldemulla, 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
Kaldemulla, Sri Lanka
  • Average cloud cover in January: 24

The month with the most cloud cover is June (Cloud cover 55).
The month with the least cloud cover is January (Cloud cover 24).

Average visibility in January
Kaldemulla, Sri Lanka
  • Average visibility in January: 10km

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

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