Kalutara
Sri Lanka
Long-term weather forecast
Long-term weather forecast

January weather forecast and climate
Kalutara, Sri Lanka

January, like December, is another tropical winter month in Kalutara, Sri Lanka, with average temperature ranging between max 31°C (87.8°F) and min 22°C (71.6°F).

Temperature

In January, the average high-temperature is practically the same as in December - a still hot 31°C (87.8°F). In Kalutara, the average low-temperature is 22°C (71.6°F).

Rainfall

The month with the least rainfall is January when the rain falls for 5 days and typically collects 73mm (2.9") of precipitation.

Sea temperature

In Kalutara, the average seawater temperature is 27.7°C (81.9°F). For any water activity, surface water temperatures between 25°C (77°F) and 29°C (84.2°F) are considered as excellent and extremely pleasant for lengthened periods.

Daylight

In Kalutara, the average length of the day in January is 11.8h.

Sunshine

The average sunshine in Kalutara is 8h.

UV index

Months with the lowest UV index in Kalutara, Sri Lanka, are January, November and December, with an average maximum UV index of 11. A UV Index reading of 11, and higher, represents an extreme threat to health from the exposure to the Sun's UV radiation for ordinary individuals.
The average daily UV index of 11 transform into the following instructions:
Practice all-important precautions. Light skin people may get burned in less than 5 minutes. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun. Even on cloudy days, a sunscreen with a minimum 30 sun protection factor should be generously applied and frequently re-applied, including after every swim or outdoor exercise. Caution! The reflection of sand and water significantly increases the intensity of the Sun's UV radiation.

What is the temperature in January in Kalutara?

In January, in Kalutara, the average high-temperature is 31°C (87.8°F), and the average low-temperature is 22°C (71.6°F).

How many days does it rain in January in Kalutara?

In Kalutara, in January, during 5 rainfall days, 73mm (2.9") of precipitation is typically accumulated.

What is the driest month in Kalutara?

January is the month with the least rainfall in Kalutara, Sri Lanka. Rain falls for 5 days and accumulates 73mm (2.9") of precipitation.

How warm is the water in January in Kalutara?

In Kalutara, the average seawater temperature in January is 27.7°C (81.9°F). Water temperature between 25°C (77°F) and 29°C (84.2°F) is regarded as very warm and enjoyable by all. With these temperatures, water activities are pleasurable, without feeling uncomfortable for prolonged periods.

What is the average length of the day in January in Kalutara?

In Kalutara, the average length of the day in January is 11.8h.

How many hours of sunshine does Kalutara have in January?

In January, the average sunshine in Kalutara, Sri Lanka, is 8h.

What is the month with the lowest UV index in Kalutara?

Months with the lowest UV index in Kalutara are January, November and December, with an average maximum UV index of 11.

What is the UV index reading in January in Kalutara?

In Kalutara, the average daily maximum UV index in January is 11. A UV Index estimate of 11, and higher, represents an excessive health risk from the exposure to the Sun's UV radiation.
Average temperature in January - Kalutara, Sri Lanka
  • Average high temperature in January: 31°C

The warmest month (with the highest average high temperature) is April (32°C).
Months with the lowest average high temperature are June, July, August, September, October, November and December (30°C).

  • Average low temperature in January: 22°C

Months with the highest average low temperature are May, June, July, August and September (25°C).
The coldest month (with the lowest average low temperature) is January (22°C).

Average rainfall in January - Kalutara, Sri Lanka
  • Average rainfall in January: 73mm

The wettest month (with the highest rainfall) is May (388mm).
The driest month (with the lowest rainfall) is January (73mm).

Average rainfall days in January - Kalutara, Sri Lanka
  • Average rainfall days in January: 5 days

The month with the highest number of rainy days is October (15 days).
Months with the lowest number of rainy days are January and February (5 days).

Average sea temperature in January - Kalutara, Sri Lanka
  • Average sea temperature in January: 27.7°C

The best month for swimming (with the highest average sea temperature) is April (29.6°C).
The coldest month (with the lowest average sea temperature) is August (27.2°C).

Average daylight in January / Average sunshine in January - Kalutara, Sri Lanka
  • Average daylight in January: 11.8h

Months with the longest days are June and July (Average daylight: 12.5h).
The month with shortest days is December (Average daylight: 11.7h).

  • Average sunshine in January: 8h

The month with most sunshine is March (Average sunshine: 9h).
Months with least sunshine are May, June, July, August, September and October (Average sunshine: 6).

Average UV index in January - Kalutara, Sri Lanka
  • Average UV index in January: 11

Months with the highest UV index are February, March, April, May, June, July, August, September and October (UV index 12).
Months with the lowest UV index are January, November and December (UV index 11).