December weather forecastMoolai, Sri Lanka

December

Weather in December

December, the first month of the winter in Moolai, is also a moderately hot month, with an average temperature fluctuating between 26.1°C (79°F) and 27.5°C (81.5°F).

Temperature

As Moolai steps into December, the average high-temperature is measured at a still moderately hot 27.5°C (81.5°F), displaying minor differences from November's 28.4°C (83.1°F). During December, the nighttime temperatures in Moolai align closely with the daytime averages, measuring a still moderately hot 26.1°C (79°F).

Heat index

The heat index in December is calculated to be a tropical 31°C (87.8°F). A sense of exhaustion might occur with extended exposure and activity, potentially causing heat cramps.
Be aware that heat index ratings are designed for shaded locations and minor breezes. If directly exposed to the sun, the heat index could rise by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'apparent temperature', ties air temperature with relative humidity to produce the perceived temperature sensation. An individual's temperature experience can be influenced by extra factors, including metabolic differences, activity levels, and clothing. Consider that direct sun exposure can intensify the felt heat, adding potentially 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values remain especially vital for babies and toddlers. Children commonly overlook the importance of rest and fluid replenishment. Thirst, being a delayed sign of dehydration, emphasizes the need to keep hydration up, especially during lengthy physical activities.

Humidity

In December, the average relative humidity in Moolai is 78%.

Rainfall

In December, in Moolai, the rain falls for 20 days. Throughout December, 140mm (5.51") of precipitation is accumulated. In Moolai, during the entire year, the rain falls for 148.6 days and collects up to 769mm (30.28") of precipitation.

Daylight

The month with the shortest days is December, with an average of 11h and 36min of daylight.
On the first day of December in Moolai, Sri Lanka, sunrise is at 06:11 and sunset at 17:47. On the last day of the month, sunrise is at 06:26 and sunset at 18:00 +0530.

Sunshine

December has the least sunshine of the year, with an average of 5.5h of sunshine.

UV index

The months with the highest UV index are January through October and December, with an average maximum UV index of 7. A UV Index estimate of 6 to 7 represents a high health risk from exposure to the Sun's UV radiation for ordinary individuals.
Note: The daily high UV index of 7 during December translates into the following recommendations:
Endorse precautions and be consistent with sun safety guidelines. Preventing sunburn is paramount. Remember that UV radiation from the Sun is strongest between 10 a.m. and 4 p.m. Make an effort to limit direct sun exposure during this time. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck.

Updated: Feb 6, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

The average high-temperature and low-temperature in Moolai, Sri Lanka, during December are 27.5°C (81.5°F) and 26.1°C (79°F) respectively. The average heat index (a.k.a. 'feels like', 'real feel'), which factors the actual air temperature with the relative humidity, in December is calculated to be 31°C (87.8°F).

In December, the average relative humidity in Moolai, Sri Lanka, is 78%.

In Moolai, in December, during 20 rainfall days, 140mm (5.51") of precipitation is typically accumulated.

December has the shortest days of the year, with an average of 11h and 36min of daylight.

In Moolai, the average day length in December is 11h and 34min.

In December, on the first day of the month, sunrise is at 06:11 and sunset at 17:47. On the last day of the month, in Moolai, Sri Lanka, sunrise is at 06:26 and sunset at 18:00 +0530.

The month with the least sunshine is December, with an average of 5.5h of sunshine.

The average sunshine duration in December in Moolai, Sri Lanka, is 5.5h.

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

In Moolai, the average daily maximum UV index in December is 7. A UV Index reading of 6 to 7 represents a high health risk from unprotected exposure to UV radiation.

Today

Tomorrow

Long-term

Year J F M A M J J A S O N December

Nov

December

Jan

Average high temperature

28.4°C

27.5°C

26.8°C

Average low temperature

Average pressure

Average wind speed

Average max. wind speed

19.9km/h

23.7km/h

23.3km/h

Average wind speed gusts

Average humidity

Average rainfall

Average rainfall days

Average daylight

Average sunshine

Average sunshine days

6.3

15.4

Average UV index

Average cloud cover

Average visibility

Average temperature in December
Moolai, Sri Lanka

Average high temperature in December: 27.5°C

The warmest month (with the highest average high temperature) is April (30.4°C).
The month with the lowest average high temperature is January (26.8°C).

Average low temperature in December: 26.1°C

The month with the highest average low temperature is May (29°C).
The coldest month (with the lowest average low temperature) is January (25.5°C).

Average pressure in December
Moolai, Sri Lanka

Average pressure in December: 1010.9mbar

The month with the highest atmospheric pressure is January (1012.5mbar).
The month with the lowest atmospheric pressure is June (1005.9mbar).

Average wind speed in December
Moolai, Sri Lanka

Average wind speed in December: 23.1km/h

The windiest month (with the highest average wind speed) is June (33.8km/h).
The calmest months (with the lowest average wind speed) are March and April (16.7km/h).

Average humidity in December
Moolai, Sri Lanka

Average humidity in December: 78%

The months with the highest relative humidity are May, August and September (79%).
The month with the lowest relative humidity is March (75%).

Average rainfall in December
Moolai, Sri Lanka

Average rainfall in December: 140mm

The wettest month (with the highest rainfall) is October (191mm).
The driest month (with the least rainfall) is March (13mm).

Average rainfall days in December
Moolai, Sri Lanka

Average rainfall days in December: 20 days

The month with the highest number of rainy days is October (22.6 days).
The month with the least rainy days is March (5.8 days).

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

Average daylight in December: 11h and 36min

The month with the longest days is June (Average daylight: 12h and 42min).
The month with the shortest days is December (Average daylight: 11h and 36min).

Average sunshine in December: 5h and 30min

The month with the most sunshine is June (Average sunshine: 11h and 36min).
The month with the least sunshine is December (Average sunshine: 5h and 30min).

Average sunshine days in December
Moolai, Sri Lanka

Average sunshine days in December: 7 days

The month with the most sunshine days is March (23.9 days).
The month with the least sunshine days is November (6.3 days).

Average UV index in December
Moolai, 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, October and December (UV index 7).
The month with the lowest UV index is November (UV index 6).

Average cloud cover in December
Moolai, Sri Lanka

Average cloud cover in December: 47

The month with the most cloud cover is December (Cloud cover 47).
The month with the least cloud cover is March (Cloud cover 16).

Average visibility in December
Moolai, Sri Lanka

Average visibility in December: 10km

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