Cox's Bazar
Bangladesh
Long-term weather forecast
Long-term weather forecast

December weather forecast and climate
Cox's Bazar, Bangladesh

The first month of the winter, December, is still a warm month in Cox's Bazar, Bangladesh, with average temperature fluctuating between 27.5°C (81.5°F) and 16.5°C (61.7°F).
The ideal sea water temperature of 25.6°C (78.1°F) and only 1 rainfall days, with 13mm (0.5") of accumulated rainfall, make December the best time for swimming and other water activities.

Temperature

In December, the average high-temperature is almost the same as in November - a warm 27.5°C (81.5°F). In Cox's Bazar, in December, the average low-temperature is 16.5°C (61.7°F).

Heat index

In December, the average heat index is calculated to a tropical 30.2°C (86.4°F). Exhaustion is likely with prolonged exposure and activity. Sustaining activity may result in heat cramps.
Take into consideration that the heat index values are calculated for shade and light wind conditions. 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 'feels like', 'apparent temperature', 'real feel', or 'felt air temperature', combines air temperature and relative humidity to represent a human perceived temperature equivalent. Additional factors like metabolic differences, clothing, differences in body mass, height, and shape, and activity influence one's weather impression. 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 particularly important for children. Young children are generally more endangered than adults, as they usually less sweat. And also, due to larger skin surface relative to their small bodies and higher heat production as a result of their activity.

Humidity

In Cox's Bazar, Bangladesh, the average relative humidity is 74%.

Rainfall

In Cox's Bazar, during 1 rainfall days, 13mm (0.5") of precipitation is typically accumulated. Throughout the year, there are 113 rainfall days, and 3524.1mm (138.7") of precipitation is accumulated.

Sea temperature

In December, the average sea temperature is 25.6°C (78.1°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

With an average of 10.8h of daylight, December has the shortest days of the year in Cox's Bazar.

Sunshine

The average sunshine in December is 8h.

UV index

Months with the lowest UV index are January and December, with an average maximum UV index of 7. A UV Index of 6 to 7 symbolizes a high health risk from the exposure to the Sun's UV rays for ordinary individuals.
Note: In December, the average maximum UV index of 7 translate into the following recommendations:
Take precautions and utilize sun safety practices. Protection against the skin and eye damage is required. 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. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Beware! The strength of the UV rays is significantly increased by the reflection of the water and sand.

What is the temperature in December in Cox's Bazar?

In Cox's Bazar, in December, the average high-temperature is 27.5°C (81.5°F), and the average low-temperature is 16.5°C (61.7°F). The average heat index (a.k.a. 'feels like', 'felt air temperature'), that combines air temperature and relative humidity, in December is estimated at 30.2°C (86.4°F).

What is the average humidity in December in Cox's Bazar?

The average relative humidity in December in Cox's Bazar is 74%.

How much does it rain in Cox's Bazar in December?

In Cox's Bazar, Bangladesh, in December, it is raining for 1 days, with typically 13mm (0.5") of accumulated precipitation.

What is the water temperature in December in Cox's Bazar?

In December, the average sea temperature in Cox's Bazar is 25.6°C (78.1°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 Cox's Bazar?

With an average of 10.8h of daylight, December has the shortest days of the year in Cox's Bazar.

How many hours of daylight does Cox's Bazar have in December?

In December, the average length of the day is 10.8h.

How many hours of sunshine does Cox's Bazar have in December?

The average sunshine in December in Cox's Bazar is 8h.

When is the lowest UV index in Cox's Bazar?

January and December, with an average maximum UV index of 7, are months with the lowest UV index.

What is the UV index intensity in December in Cox's Bazar?

The average daily maximum UV index in December in Cox's Bazar is 7. A UV Index of 6 to 7 symbolizes a high hazard to health from the exposure to the Sun's UV radiation.
Average temperature in December - Cox
  • Average high temperature in December: 27.5°C

The warmest month (with the highest average high temperature) is May (32.3°C).
The month with the lowest average high temperature is January (26.7°C).

  • Average low temperature in December: 16.5°C

The month with the highest average low temperature is June (25.2°C).
The coldest month (with the lowest average low temperature) is January (15°C).

Average humidity in December - Cox
  • Average humidity in December: 74%

The month with the highest relative humidity is July (89%).
The month with the lowest relative humidity is February (71%).

Average rainfall in December - Cox
  • Average rainfall in December: 13mm

The wettest month (with the highest rainfall) is July (924.6mm).
The driest month (with the lowest rainfall) is January (4.1mm).

Average rainfall days in December - Cox
  • Average rainfall days in December: 1 days

The month with the highest number of rainy days is July (22 days).
Months with the lowest number of rainy days are January and December (1 days).

Average sea temperature in December - Cox
  • Average sea temperature in December: 25.6°C

The best month for swimming (with the highest average sea temperature) is June (29.8°C).
The coldest month (with the lowest average sea temperature) is January (23.8°C).

Average daylight in December / Average sunshine in December - Cox
  • Average daylight in December: 10.8h

The month with the longest days is June (Average daylight: 13.4h).
The month with shortest days is December (Average daylight: 10.8h).

  • Average sunshine in December: 8h

Months with most sunshine are January and February (Average sunshine: 9h).
Months with least sunshine are June, July and August (Average sunshine: 3).

Average UV index in December - Cox
  • Average UV index in December: 7

Months with the highest UV index are April, May, June, July, August and September (UV index 12).
Months with the lowest UV index are January and December (UV index 7).