December weather forecastLa Grille, Comoros

December

Weather in December

The first month of the summer, December, is also a moderately hot month in La Grille, Comoros, with an average temperature varying between 27°C (80.6°F) and 28.4°C (83.1°F).

Temperature

The advent of December brings an average high-temperature of a still moderately hot 28.4°C (83.1°F), almost identical to the preceding month. La Grille registers a steady nighttime temperature averaging a still warm 27°C (80.6°F) throughout December.

Heat index

The heat index value during December is estimated at a tropical 32°C (89.6°F). If exposure and ongoing activity persist, they might induce a state of tiredness and heat cramps.
Consider that heat index readings are for situations in the shade and light wind. With direct sunlight, the heat index could increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'feels like', is calculated by taking the relative humidity value for a specific location and factoring it into the air temperature reading. One's perception of temperature is subjective, varying based on their activity and individual heat perception, influenced by factors like wind, clothing, and metabolic variations. With the sun shining directly, it's crucial to understand that it can increase the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are essentially critical for children. Kids are usually in more danger than grown-ups as they tend to sweat less. Plus, their bigger skin surface in relation to their small frames and increased heat generation due to their activity level make them more susceptible.

Humidity

In La Grille, the average relative humidity in December is 75%.

Rainfall

In La Grille, in December, during 19.2 rainfall days, 110mm (4.33") of precipitation is typically accumulated. Throughout the year, there are 190.9 rainfall days, and 867mm (34.13") of precipitation is accumulated.

Daylight

The month with the longest days is December, with an average of 12h and 48min of daylight.
On the first day of December in La Grille, Comoros, sunrise is at 05:33 and sunset at 18:18. On the last day of the month, sunrise is at 05:46 and sunset at 18:33 EAT.

Sunshine

The average sunshine in December is 10.7h.

UV index

The months with the highest UV index are January through June, September through December, with an average maximum UV index of 7. A UV Index estimate of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV rays for the average person.
Note: The maximum UV index of 7 during December leads to these instructions:
Prevent overexposure. Protection from the sun's harmful effects is needed. Make an effort to avoid direct sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation, and note that objects like parasols or canopies might not offer full sun protection. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit.

Updated: Jul 8, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

The high-temperature, in December, in La Grille, is 28.4°C (83.1°F), while the low-temperature averages to 27°C (80.6°F). The average heat index (a.k.a. 'real feel', 'felt air temperature'), which combines air temperature and relative humidity, in December is estimated at 32°C (89.6°F).

In La Grille, the average relative humidity in December is 75%.

In La Grille, in December, it is raining for 19.2 days, with typically 110mm (4.33") of accumulated precipitation.

December has the longest days of the year, with an average of 12h and 48min of daylight.

In La Grille, the average day length in December is 12h and 47min.

On the first day of December, sunrise is at 05:33 and sunset at 18:18. On the last day of the month, sunrise is at 05:46 and sunset at 18:33 EAT.

The average sunshine duration in December is 10.7h.

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

In December, the average daily maximum UV index is 7. A UV Index reading of 6 to 7 represents a high health risk from exposure to Sun's UV rays.

Today

Tomorrow

Long-term

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

Nov

December

Jan

Average high temperature

27.6°C

28.4°C

28.2°C

Average low temperature

Average pressure

Average wind speed

Average max. wind speed

12.7km/h

19.3km/h

Average wind speed gusts

Average humidity

Average rainfall

Average rainfall days

Average daylight

Average sunshine

Average sunshine days

12.5

8.8

6.3

Average UV index

Average cloud cover

Average visibility

Average temperature in December
La Grille, Comoros

Average high temperature in December: 28.4°C

The warmest month (with the highest average high temperature) is March (28.6°C).
The months with the lowest average high temperature are July, August and September (25.4°C).

Average low temperature in December: 27°C

The month with the highest average low temperature is March (27.5°C).
The coldest month (with the lowest average low temperature) is August (23.9°C).

Average pressure in December
La Grille, Comoros

Average pressure in December: 1010.9mbar

The month with the highest atmospheric pressure is July (1017mbar).
The month with the lowest atmospheric pressure is February (1010mbar).

Average wind speed in December
La Grille, Comoros

Average wind speed in December: 12km/h

The windiest month (with the highest average wind speed) is July (22.1km/h).
The calmest months (with the lowest average wind speed) are March, November and December (12km/h).

Average humidity in December
La Grille, Comoros

Average humidity in December: 75%

The month with the highest relative humidity is January (78%).
The month with the lowest relative humidity is July (73%).

Average rainfall in December
La Grille, Comoros

Average rainfall in December: 110mm

The wettest month (with the highest rainfall) is January (176mm).
The driest months (with the least rainfall) are August and September (14mm).

Average rainfall days in December
La Grille, Comoros

Average rainfall days in December: 19.2 days

The month with the highest number of rainy days is April (23.1 days).
The month with the least rainy days is August (9.8 days).

Average daylight in December /
Average sunshine in December
La Grille, Comoros

Average daylight in December: 12h and 48min

The month with the longest days is December (Average daylight: 12h and 48min).
The month with the shortest days is June (Average daylight: 11h and 30min).

Average sunshine in December: 10h and 42min

The month with the most sunshine is November (Average sunshine: 11h and 18min).
The months with the least sunshine are May and June (Average sunshine: 7h and 12min).

Average sunshine days in December
La Grille, Comoros

Average sunshine days in December: 8.8 days

The month with the most sunshine days is August (15.8 days).
The month with the least sunshine days is April (5.1 days).

Average UV index in December
La Grille, Comoros

Average UV index in December: 7

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

Average cloud cover in December
La Grille, Comoros

Average cloud cover in December: 34

The month with the most cloud cover is January (Cloud cover 43).
The month with the least cloud cover is August (Cloud cover 20).

Average visibility in December
La Grille, Comoros

Average visibility in December: 10km

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