January weather forecast
Kalmunai, Sri Lanka

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Weather in January

The onset of the year in Kalmunai, Sri Lanka is marked by predominantly humid weather. Differences in temperature remain minimally from 24°C (75.2°F) to 27.3°C (81.1°F), instigating moderate warmth across the region. The city experiences a relative humidity of 80% providing a slightly balmy ambience. Rainfall marks its presence with a generous 120mm (4.72") spread over about 18.7 days of the month. Hence, explorers are advised to keep their raincoats handy, as January showers are quite a common sight.

Temperature

January is the month when Kalmunai, Sri Lanka, sees the lowest average temperatures, with a high of 27.3°C (81.1°F) and a low of 24°C (75.2°F).

Heat index

In January, the heat index is computed to be a hot 30°C (86°F). Unrelenting activity during exposure could cause fatigue and potentially lead to heat cramps.
Keep in mind the heat index values are meant for areas in shade and with light wind. Direct sunlight might lead to a heat index increase by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', offers an insight into how hot it feels when we factor in moisture content. Factors such as metabolic variation, pregnancy, and physical activity play a role in one's impression of weather. Remember, direct sunlight exposure can heighten the heat impact and might increase the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical to babies and toddlers. Young children typically face greater hazards than adults because they do not sweat as much. Their larger skin surface in comparison to their little bodies and the high heat production from their active nature compounds their vulnerability.

Humidity

In Kalmunai, the average relative humidity in January is 80%.

Rainfall

In Kalmunai, in January, during 18.7 rainfall days, 120mm (4.72") of precipitation is typically accumulated. Throughout the year, in Kalmunai, there are 237.8 rainfall days, and 1259mm (49.57") of precipitation is accumulated.

Sea temperature

January is the month with the coldest seawater, with an average sea temperature of 27.3°C (81.1°F).
Note: Swimming, diving, and other water endeavors at temperatures between 25°C (77°F) and 29°C (84.2°F) are considered enjoyable and satisfying for extended periods without discomfort.

Daylight

In Kalmunai, the average length of the day in January is 11h and 45min.
On the first day of January, sunrise is at 06:14 and sunset at 17:56. On the last day of the month, sunrise is at 06:21 and sunset at 18:10 +0530.

Sunshine

In Kalmunai, the average sunshine in January is 7.5h.

UV index

The months with the highest UV index are January through October, with an average maximum UV index of 7. A UV Index reading of 6 to 7 represents a high threat to health from exposure to the Sun's UV radiation for average individuals.
Note: The maximum UV index of 7 during January leads to these instructions:
Guard oneself from overexposure. Defence against sun injury is vital. Stay in the shade and limit sun exposure from 10 a.m. to 4 p.m., when UV radiation is most potent. Keep in mind that shade structures like parasols or canopies do not offer full protection. For optimum UV protection, wear sun-resistant attire complemented with a hat and quality shades. Take note! Sand and water reflections strengthen the Sun's UV exposure.

Frequently asked questions

What is the coldest month?

In Kalmunai, the average lowest temperatures are observed in January, with a high of 27.3°C (81.1°F) and a low of 24°C (75.2°F).

What is the average January temperature?

The high-temperature, in January, in Kalmunai, records 27.3°C (81.1°F), while the low-temperature is 24°C (75.2°F). In January, the average heat index (a.k.a. 'apparent temperature', 'feels like'), which combines air temperature and relative humidity, is computed to be 30°C (86°F).

What is the average humidity in January?

The average relative humidity in January is 80%.

How much does it rain in January?

In January, the rain falls for 18.7 days. Throughout January, 120mm (4.72") of precipitation is accumulated.

When is the sea coldest?

With an average sea temperature of 27.3°C (81.1°F), January is the month with the coldest seawater.

How warm is the water in January?

In Kalmunai, in January, the average water temperature is 27.3°C (81.1°F). For swimming, diving, and other water activities, temperatures between 25°C (77°F) and 29°C (84.2°F) are perceived as very enjoyable and pleasurable for prolonged periods without feeling uncomfortable.

How many hours of daylight does Kalmunai have in January?

In Kalmunai, Sri Lanka, the average day length in January is 11h and 45min.

When is the sunrise / sunset in January?

In January, on the first day of the month, sunrise is at 06:14 and sunset at 17:56. On the last day of the month, sunrise is at 06:21 and sunset at 18:10 +0530.

How long on average sun shines in January?

In January, the average sunshine duration in Kalmunai is 7.5h.

When is the highest UV index?

January through October, with an average maximum UV index of 7, are months with the highest UV index.

What is the UV index reading in January?

In January, the average daily maximum UV index is 7. A UV Index value of 6 to 7 symbolizes a high health threat from exposure to Sun's UV rays.

Average temperature in January
Kalmunai, Sri Lanka

Average temperature in January - Kalmunai, Sri Lanka
  • Average high temperature in January: 27.3°C

The warmest month (with the highest average high temperature) is June (33°C).
The month with the lowest average high temperature is January (27.3°C).

  • Average low temperature in January: 24°C

The month with the highest average low temperature is May (26.6°C).
The coldest month (with the lowest average low temperature) is January (24°C).

Average pressure in January
Kalmunai, Sri Lanka

Average pressure in January - Kalmunai, Sri Lanka
  • Average pressure in January: 1011.8mbar

The month with the highest atmospheric pressure is January (1011.8mbar).
The month with the lowest atmospheric pressure is June (1007.3mbar).

Average wind speed in January
Kalmunai, Sri Lanka

Average wind speed in January - Kalmunai, Sri Lanka
  • Average wind speed in January: 13.9km/h

The windiest month (with the highest average wind speed) is January (13.9km/h).
The calmest month (with the lowest average wind speed) is September (9.1km/h).

Average humidity in January
Kalmunai, Sri Lanka

Average humidity in January - Kalmunai, Sri Lanka
  • Average humidity in January: 80%

The month with the highest relative humidity is December (81%).
The months with the lowest relative humidity are June and July (68%).

Average rainfall in January
Kalmunai, Sri Lanka

Average rainfall in January - Kalmunai, Sri Lanka
  • Average rainfall in January: 120mm

The wettest month (with the highest rainfall) is December (272mm).
The driest month (with the least rainfall) is June (30mm).

Average rainfall days in January
Kalmunai, Sri Lanka

Average rainfall days in January - Kalmunai, Sri Lanka
  • Average rainfall days in January: 18.7 days

The months with the highest number of rainy days are October and November (25.5 days).
The month with the least rainy days is March (12.8 days).

Average sea temperature in January
Kalmunai, Sri Lanka

Average sea temperature in January - Kalmunai, Sri Lanka
  • Average sea temperature in January: 27.3°C

The best months for swimming (with the highest average sea temperature) are April and May (29.8°C).
The coldest month (with the lowest average sea temperature) is January (27.3°C).

Average daylight in January /
Average sunshine in January
Kalmunai, Sri Lanka

Average daylight in January / Average sunshine in January - Kalmunai, Sri Lanka
  • Average daylight in January: 11h and 4min

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: 7h and 3min

The month with the most sunshine is June (Average sunshine: 11h and 48min).
The month with the least sunshine is December (Average sunshine: 5h and 24min).

Average sunshine days in January
Kalmunai, Sri Lanka

Average sunshine days in January - Kalmunai, Sri Lanka
  • Average sunshine days in January: 8.3 days

The month with the most sunshine days is March (15.5 days).
The month with the least sunshine days is November (3.2 days).

Average UV index in January
Kalmunai, Sri Lanka

Average UV index in January - Kalmunai, 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 and October (UV index 7).
The months with the lowest UV index are November and December (UV index 6).

Average cloud cover in January
Kalmunai, Sri Lanka

Average cloud cover in January - Kalmunai, Sri Lanka
  • Average cloud cover in January: 47

The month with the most cloud cover is December (Cloud cover 50).
The month with the least cloud cover is April (Cloud cover 22).

Average visibility in January
Kalmunai, Sri Lanka

Average visibility in January - Kalmunai, Sri Lanka
  • Average visibility in January: 10km

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

Kalmunai, Sri Lanka

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