Bentota
Sri Lanka
Long-term weather forecast
Long-term weather forecast

January weather forecast and climate
Bentota, Sri Lanka

January is a hot winter month in Bentota, Sri Lanka, with temperature in the range of an average high of 30.3°C (86.5°F) and an average low of 23.4°C (74.1°F).

Temperature

In January, the average high-temperature is relatively the same as in December - a tropical 30.3°C (86.5°F). In Bentota, in January, the average low-temperature is 23.4°C (74.1°F).

Heat index

The average heat index in January is appraised at a very hot 37.1°C (98.8°F). Take extra precautions, as heat cramps and heat exhaustion are possible. Sustained activity may result in heatstroke.
Note that heat index values are valued for light wind and location in the shade. With the exposure to direct sunlight, the heat index may be increased by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature', 'feels like', 'real feel', or 'felt air temperature', combines air temperature and relative humidity to represent a human perceived temperature equivalent. Additional factors like activity, differences in body mass, height, and shape, wind, and metabolic differences affect individual temperature impact. Bear in mind that direct sunshine exposure increases weather impact, and may raise heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it is vital to remain hydrated, particularly during prolonged physical activities.
The human body cools itself through perspiration, as excessive warmth is removed from the body through sweat evaporation. High relative humidity reduces the evaporation rate, resulting in a lower heat removal rate from the body, causing the perception of being overheated. When heat gain surpasses the level the body can shed, body temperature begins to increase, and consequently, overheating and dehydration can occur, with varying severity.

Humidity

Months with the lowest humidity in Bentota are January and February, with an average relative humidity of 75%.

Rainfall

The month with the least rainfall in Bentota is January when the rain falls for 8.9 days and typically collects 25mm (0.98") of precipitation.

Sea temperature

In January, the average sea temperature is 27.9°C (82.2°F).
Note: 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 are January, November and December, with an average of 11.8h of daylight.

Sunshine

January has the most sunshine of the year in Bentota, with an average of 9.2h of sunshine.

UV index

Months with the highest UV index in Bentota are January through April, July, September through December, with an average maximum UV index of 7. A UV Index of 6 to 7 symbolizes a high threat to health from the exposure to the Sun's UV rays for the ordinary person.
Note: The daily maximum UV index of 7 in January interpret into the following advice:
Take precautions against overexposure. Fair-skinned people may get burned in less than 20 minutes. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. 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. Beware! The reflection of water and sand dramatically increases exposure to the UV rays.

What is the temperature in January in Bentota?

In Bentota, in January, the average high-temperature is 30.3°C (86.5°F), and the average low-temperature is 23.4°C (74.1°F). The average heat index (a.k.a. 'felt air temperature', 'real feel'), that represents influence of the relative humidity to air temperaure, in January is evaluated at 37.1°C (98.8°F).

What are the least humid months in Bentota?

January and February, with an average relative humidity of 75%, are the least humid months in Bentota.

What is the average humidity in January in Bentota?

The average relative humidity in January in Bentota is 75%.

How much does it rain in Bentota in January?

In January, in Bentota, the rain falls for 8.9 days. Throughout January, 25mm (0.98") of precipitation is accumulated.

What is the driest month in Bentota?

The month with the least rainfall in Bentota is January when the rain falls for 8.9 days and typically collects 25mm (0.98") of precipitation.

What is the water temperature in January in Bentota?

In January, the average sea temperature in Bentota is 27.9°C (82.2°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.

What is the month with the shortest days in Bentota?

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

How many hours of daylight does Bentota have in January?

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

What month has the most sunshine in Bentota?

The month with the most sunshine is January, with an average of 9.2h of sunshine.

How long on average sun shines in January in Bentota?

In Bentota, the average sunshine in January is 9.2h.

What are the months with the highest UV index in Bentota?

January through April, July, September through December, with an average maximum UV index of 7, are months with the highest UV index in Bentota, Sri Lanka.

How high is the UV index in January in Bentota?

The average daily maximum UV index in January in Bentota, Sri Lanka, is 7. A UV Index reading of 6 to 7 represents a high health risk from the exposure to the Sun's UV radiation.
Average temperature in January - Bentota, Sri Lanka
  • Average high temperature in January: 30.3°C

The warmest months (with the highest average high temperature) are March and April (31.3°C).
The month with the lowest average high temperature is August (28.6°C).

  • Average low temperature in January: 23.4°C

The month with the highest average low temperature is May (26.3°C).
The coldest month (with the lowest average low temperature) is January (23.4°C).

Average humidity in January - Bentota, Sri Lanka
  • Average humidity in January: 75%

Months with the highest relative humidity are June, July and August (83%).
Months with the lowest relative humidity are January and February (75%).

Average rainfall in January - Bentota, Sri Lanka
  • Average rainfall in January: 25mm

The wettest month (with the highest rainfall) is June (350mm).
The driest month (with the least rainfall) is January (25mm).

Average rainfall days in January - Bentota, Sri Lanka
  • Average rainfall days in January: 8.9 days

Months with the highest number of rainy days are July and August (29.5 days).
The month with the least rainy days is January (8.9 days).

Average sea temperature in January - Bentota, Sri Lanka
  • Average sea temperature in January: 27.9°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 July (27.3°C).

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

Months with the longest days are June and July (Average daylight: 12.5h).
Months with the shortest days are January, November and December (Average daylight: 11.8h).

  • Average sunshine in January: 9.2h

The month with the most sunshine is January (Average sunshine: 9.2h).
The month with the least sunshine is November (Average sunshine: 6.8h).

Average UV index in January - Bentota, Sri Lanka
  • Average UV index in January: 7

Months with the highest UV index are January, February, March, April, July, September, October, November and December (UV index 7).
Months with the lowest UV index are May, June and August (UV index 6).