December weather forecast
Hambantota, Sri Lanka

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Weather in December

December continues the trend of the preceding rainy month, but begins to show signs of weather moderation. A significant drop in rainfall from 182mm (7.17") to 131mm (5.16") indicates the looming end of the monsoon. Correspondingly, the number of rainfall days decreases. Despite slight fluctuations in temperatures and humidity, the overall weather conditions depict consistency. With these transformations, December sifts gradually towards clearer weather, preparing the city for a new annual cycle.

Temperature

Hambantota witnesses the coldest weather in December, with temperatures averaging a high of 29°C (84.2°F) and a low of 24.5°C (76.1°F).

Heat index

In December, the heat index is calculated to be a torrid 35°C (95°F). Adopt additional preventive measures, heat cramps and heat exhaustion are potential outcomes. Prolonged activity may trigger heatstroke.
Always consider that heat index estimations are for light winds and places in the shade. In the presence of direct sunshine, the heat index could be augmented by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', embodies the combination of air temperature and moisture content to illustrate perceived heat. Factors such as metabolic variation, pregnancy, and physical activity play a role in one's impression of weather. Given direct exposure to sunlight, one might experience a rise in the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for children. Children often fail to recognize the requirement to rest and rehydrate. Thirst, being a late symptom of dehydration, underlines the importance of maintaining hydration, especially during ongoing physical activities.
Perspiration, which is the evaporation of sweat, is a primary way the human body manages and dispels excessive warmth. When relative humidity increases, the body's capacity to evaporate heat decreases, leading to a heightened sense of warmth. Overheating and potential dehydration arise when body heat gain eclipses its release capability.

Humidity

November and December, with an average relative humidity of 79%, are the most humid months in Hambantota.

Rainfall

In December, the rain falls for 20.1 days. Throughout December, 131mm (5.16") of precipitation is accumulated. In Hambantota, during the entire year, the rain falls for 192.9 days and collects up to 942mm (37.09") of precipitation.

Daylight

The month with the shortest days is December, with an average of 11h and 48min of daylight.
On the first day of the month, sunrise is at 06:00 and sunset at 17:48. On the last day of December, in Hambantota, Sri Lanka, sunrise is at 06:15 and sunset at 18:01 +0530.

Sunshine

December has the least sunshine of the year, with an average of 6.6h of sunshine.

UV index

The months with the highest UV index in Hambantota, Sri Lanka, are January through September, November and December, with an average maximum UV index of 7. A UV Index reading of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV radiation for the average person.
Note: In December, a daily UV index of 7 turns into the following recommendations:
Escape overexposure. People with light skin may incur burns in fewer than 20 minutes. Limit direct sun exposure especially between 10 a.m. and 4 p.m., when UV radiation is at its peak. However, keep in mind that shade structures may not provide full sun protection. Experience reduced UV exposure by about half when donning a wide-brim hat.

Frequently asked questions

What part of the year is the coldest in Hambantota?

December is the coldest month in Hambantota, Sri Lanka, with the temperature often reaching an average high of 29°C (84.2°F) and an average low of 24.5°C (76.1°F).

How hot is it in Hambantota in December?

The high-temperature in Hambantota during December is 29°C (84.2°F) and the low-temperature is 24.5°C (76.1°F). In December, the average heat index (a.k.a. 'felt air temperature', 'real feel'), which combines air temperature and relative humidity, is calculated to be 35°C (95°F).

What are the most humid months in Hambantota?

The months with the highest humidity in Hambantota, Sri Lanka, are November and December, with an average relative humidity of 79%.

What is the average humidity in December in Hambantota?

In Hambantota, the average relative humidity in December is 79%.

How many days does it rain in December in Hambantota?

In December, in Hambantota, Sri Lanka, the rain falls for 20.1 days. Throughout December, 131mm (5.16") of precipitation is accumulated.

What is the month with the shortest days in Hambantota?

The month with the shortest days is December, with an average of 11h and 48min of daylight.

How many hours of daylight does Hambantota have in December?

The average day length in December in Hambantota is 11h and 47min.

When is the sunrise / sunset in December in Hambantota?

On the first day of December in Hambantota, sunrise is at 06:00 and sunset at 17:48. On the last day of the month, sunrise is at 06:15 and sunset at 18:01 +0530.

What is the month with the least sunshine in Hambantota?

December has the least sunshine of the year in Hambantota, with an average of 6.6h of sunshine.

How many hours of sunshine does Hambantota have in December?

The average sunshine duration in December in Hambantota, Sri Lanka, is 6.6h.

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

The months with the highest UV index are January through September, November and December, with an average maximum UV index of 7.

What is the UV index reading in December in Hambantota?

In Hambantota, the average daily maximum UV index in December is 7. A UV Index of 6 to 7 symbolizes a high health threat from unprotected exposure to UV radiation.

Average temperature in December
Hambantota, Sri Lanka

Average temperature in December - Hambantota, Sri Lanka
  • Average high temperature in December: 29°C

The warmest month (with the highest average high temperature) is April (31.1°C).
The month with the lowest average high temperature is December (29°C).

  • Average low temperature in December: 24.5°C

The month with the highest average low temperature is May (26.7°C).
The coldest month (with the lowest average low temperature) is January (23.9°C).

Average pressure in December
Hambantota, Sri Lanka

Average pressure in December - Hambantota, Sri Lanka
  • Average pressure in December: 1010.2mbar

The month with the highest atmospheric pressure is January (1011.5mbar).
The month with the lowest atmospheric pressure is May (1008.6mbar).

Average wind speed in December
Hambantota, Sri Lanka

Average wind speed in December - Hambantota, Sri Lanka
  • Average wind speed in December: 14.4km/h

The windiest month (with the highest average wind speed) is June (26.4km/h).
The calmest month (with the lowest average wind speed) is November (11.7km/h).

Average humidity in December
Hambantota, Sri Lanka

Average humidity in December - Hambantota, Sri Lanka
  • Average humidity in December: 79%

The months with the highest relative humidity are November and December (79%).
The month with the lowest relative humidity is July (74%).

Average rainfall in December
Hambantota, Sri Lanka

Average rainfall in December - Hambantota, Sri Lanka
  • Average rainfall in December: 131mm

The wettest month (with the highest rainfall) is November (182mm).
The driest month (with the least rainfall) is July (16mm).

Average rainfall days in December
Hambantota, Sri Lanka

Average rainfall days in December - Hambantota, Sri Lanka
  • Average rainfall days in December: 20.1 days

The month with the highest number of rainy days is November (25.3 days).
The month with the least rainy days is July (10.6 days).

Average daylight in December /
Average sunshine in December
Hambantota, Sri Lanka

Average daylight in December / Average sunshine in December - Hambantota, Sri Lanka
  • Average daylight in December: 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 48min).

  • Average sunshine in December: 6h and 4min

The month with the most sunshine is June (Average sunshine: 11h and 18min).
The month with the least sunshine is December (Average sunshine: 6h and 36min).

Average sunshine days in December
Hambantota, Sri Lanka

Average sunshine days in December - Hambantota, Sri Lanka
  • Average sunshine days in December: 9.2 days

The month with the most sunshine days is January (18.3 days).
The month with the least sunshine days is November (3.6 days).

Average UV index in December
Hambantota, Sri Lanka

Average UV index in December - Hambantota, Sri Lanka
  • Average UV index in December: 7

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

Average cloud cover in December
Hambantota, Sri Lanka

Average cloud cover in December - Hambantota, Sri Lanka
  • Average cloud cover in December: 35

The month with the most cloud cover is November (Cloud cover 40).
The month with the least cloud cover is March (Cloud cover 21).

Average visibility in December
Hambantota, Sri Lanka

Average visibility in December - Hambantota, Sri Lanka
  • Average visibility in December: 10km

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

Hambantota, Sri Lanka

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