Unawatuna
Sri Lanka
Long-term weather forecast
Long-term weather forecast

January weather forecast and climate
Unawatuna, Sri Lanka

January, the same as December, is a moderately hot winter month in Unawatuna, Sri Lanka, with average temperature varying between 29°C (84.2°F) and 22°C (71.6°F).

Temperature

The coldest months are January, June through December, with an average high-temperature of 29°C (84.2°F).

Rainfall

The month with the least rainfall is January when the rain falls for 5 days and typically collects 94mm (3.7") of precipitation.

Sea temperature

January, February, June through October and December, with an average sea temperature of 28°C (82.4°F), are months with the coldest seawater. 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.

Daylight

Months with the shortest days in Unawatuna are January and December, with an average of 11.8h of daylight.

Sunshine

In Unawatuna, the average sunshine in January is 7h.

UV index

January through October, with an average maximum UV index of 12, are months with the highest UV index. A UV Index value of 11, and more, symbolizes an extreme threat to health from the exposure to the Sun's UV rays for average individuals.
In January, the average maximum UV index of 12 translate into the following recommendations:
Take all necessary precautions, as unprotected skin can burn in 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. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. A broad-spectrum sunscreen of SPF 30+ should be liberally applied and re-applied every two hours, and immediately after an outdoor workout or a swim. Caution! The reflection of sand and water significantly increases the intensity of the Sun's UV radiation.

What are the coldest months in Unawatuna?

The coldest months in Unawatuna are January, June through December, with an average high-temperature of 29°C (84.2°F).

What is the temperature in January in Unawatuna?

In Unawatuna, Sri Lanka, in January, the average high-temperature is 29°C (84.2°F), and the average low-temperature is 22°C (71.6°F).

How many days does it rain in January in Unawatuna?

In Unawatuna, Sri Lanka, in January, it is raining for 5 days, with typically 94mm (3.7") of accumulated precipitation.

What is the driest month in Unawatuna?

The month with the least rainfall in Unawatuna, Sri Lanka, is January when the rain falls for 5 days and typically collects 94mm (3.7") of precipitation.

When is the sea coldest in Unawatuna?

January, February, June through October and December, with an average sea temperature of 28°C (82.4°F), are months with the coldest seawater in Unawatuna, Sri Lanka. 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 warm is the water in January in Unawatuna?

In Unawatuna, Sri Lanka, the average seawater temperature in January is 28°C (82.4°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.

What is the month with the shortest days in Unawatuna?

January and December, with an average of 11.8h of daylight, are months with the shortest days in Unawatuna, Sri Lanka.

How many hours of daylight does Unawatuna have in January?

The average length of the day in January is 11.8h.

How long on average sun shines in January in Unawatuna?

In Unawatuna, the average sunshine in January is 7h.

What is the month with the highest UV index in Unawatuna?

January through October, with an average maximum UV index of 12, are months with the highest UV index in Unawatuna.

How high is the UV index in January in Unawatuna?

In January, the average daily maximum UV index in Unawatuna, Sri Lanka, is 12. A UV Index value of 11, and more, symbolizes an excessive health risk from unprotected exposure to the UV radiation.
Average temperature in January - Unawatuna, Sri Lanka
  • Average high temperature in January: 29°C

Warmest months (with the highest average high temperature) are March and April (31°C).
Months with the lowest average high temperature are January, June, July, August, September, October, November and December (29°C).

  • Average low temperature in January: 22°C

The month with the highest average low temperature is May (25°C).
Coldest months (with the lowest average low temperature) are January, February, November and December (22°C).

Average rainfall in January - Unawatuna, Sri Lanka
  • Average rainfall in January: 94mm

The wettest month (with the highest rainfall) is October (340mm).
The driest month (with the lowest rainfall) is January (94mm).

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

Months with the highest number of rainy days are October and November (14 days).
Months with the lowest number of rainy days are January and February (5 days).

Average sea temperature in January - Unawatuna, Sri Lanka
  • Average sea temperature in January: 28°C

The best month for swimming (with the highest average sea temperature) is April (30°C).
Coldest months (with the lowest average sea temperature) are January, February, June, July, August, September, October and December (28°C).

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

The month with the longest days is June (Average daylight: 12.5h).
Months with shortest days are January and December (Average daylight: 11.8h).

  • Average sunshine in January: 7h

Months with most sunshine are February and March (Average sunshine: 8h).
Months with least sunshine are May, June, July, August, September, October and November (Average sunshine: 6).

Average UV index in January - Unawatuna, Sri Lanka
  • Average UV index in January: 12

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