December weather forecast
Sylhet, Bangladesh

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Weather in December

December, being the final month of the year in Sylhet, ends the dry season and gives way to winter. The weather is substantially cooler with clear skies, low relative humidity, and minimal rainfall, making December distinct from the rest of the year. The city notes its least rainfall in December, with precipitation dipping to a mere 7mm (0.28") over 2.5 days. The dry conditions, coupled with the lowest rain volume all year, conclude Sylhet's weather cycle with the firm establishment of winter. December's weather represents a stark contrast to the early monsoon months, and the cool, dry conditions dominate until January.

Temperature

Sylhet experiences its lowest average temperatures in December, reaching a peak of 25.5°C (77.9°F) and a minimum of 13.5°C (56.3°F).

Humidity

The average relative humidity in December in Sylhet, Bangladesh, is 75%.

Rainfall

In Sylhet, in December, during 2.5 rainfall days, 7mm (0.28") of precipitation is typically accumulated. In Sylhet, Bangladesh, during the entire year, the rain falls for 208.1 days and collects up to 1868mm (73.54") of precipitation.

Daylight

The month with the shortest days is December, with an average of 10h and 36min of daylight.
On the first day of the month, sunrise is at 6:20 am and sunset at 5:02 pm. On the last day of December, sunrise is at 6:37 am and sunset at 5:14 pm +06.

Sunshine

The average sunshine in December is 7.3h.

UV index

The months with the lowest UV index in Sylhet are January and December, with an average maximum UV index of 5. A UV Index reading of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV radiation for average individuals.
Note: In December, an average UV index of 5 transforms into the following instructions:
Exercise prevention - Protecting skin and eyes from harm is required. Avoiding the Sun's peak radiation during midday hours is essential for health and safety. To cut down UV radiation exposure by about half, sport a wide-brim hat.
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Frequently asked questions

What month is the coldest in Sylhet?

December proves to be the coldest month in Sylhet, Bangladesh, recording an average maximum temperature of 25.5°C (77.9°F) and a minimum temperature of 13.5°C (56.3°F).

What are the temperatures in Sylhet in December?

In Sylhet, in December, the average high-temperature is 25.5°C (77.9°F), and the average low-temperature is 13.5°C (56.3°F). The average heat index (a.k.a. 'felt air temperature', 'real feel'), which combines relative humidity and air temperature, in November is estimated at 33°C (91.4°F).

What is the average humidity in December in Sylhet?

In December, the average relative humidity is 75%.

How much does it rain in Sylhet in December?

In December, in Sylhet, the rain falls for 2.5 days. Throughout December, 7mm (0.28") of precipitation is accumulated.

What is the month with the shortest days in Sylhet?

The month with the shortest days in Sylhet, Bangladesh, is December, with an average of 10h and 36min of daylight.

How many hours of daylight does Sylhet have in December?

In December, the average day length in Sylhet, Bangladesh, is 10h and 37min.

When is the sunrise / sunset in December in Sylhet?

On the first day of December in Sylhet, sunrise is at 6:20 am and sunset at 5:02 pm. On the last day of the month, sunrise is at 6:37 am and sunset at 5:14 pm +06.

How long on average sun shines in December in Sylhet?

In Sylhet, the average sunshine duration in December is 7.3h.

What is the month with the lowest UV index in Sylhet?

January and December, with an average maximum UV index of 5, are months with the lowest UV index in Sylhet, Bangladesh.

What is the UV index intensity in December in Sylhet?

The average daily maximum UV index in December in Sylhet is 5. A UV Index reading of 3 to 5 represents a medium hazard to health from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover

Average temperature in December
Sylhet, Bangladesh

Average temperature in December - Sylhet, Bangladesh
  • Average high temperature in December: 25.5°C

The warmest month (with the highest average high temperature) is April (34.4°C).
The month with the lowest average high temperature is December (25.5°C).

  • Average low temperature in December: 13.5°C

The month with the highest average low temperature is June (25.3°C).
The coldest month (with the lowest average low temperature) is January (12°C).

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Average pressure in December
Sylhet, Bangladesh

Average pressure in December - Sylhet, Bangladesh
  • Average pressure in December: 1014.2mbar

The month with the highest atmospheric pressure is January (1014.9mbar).
The month with the lowest atmospheric pressure is July (1002mbar).

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Average wind speed in December
Sylhet, Bangladesh

Average wind speed in December - Sylhet, Bangladesh
  • Average wind speed in December: 4.3km/h

The windiest month (with the highest average wind speed) is July (7.7km/h).
The calmest months (with the lowest average wind speed) are November and December (4.3km/h).

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Average humidity in December
Sylhet, Bangladesh

Average humidity in December - Sylhet, Bangladesh
  • Average humidity in December: 75%

The month with the highest relative humidity is July (89%).
The month with the lowest relative humidity is March (55%).

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Average rainfall in December
Sylhet, Bangladesh

Average rainfall in December - Sylhet, Bangladesh
  • Average rainfall in December: 7mm

The wettest month (with the highest rainfall) is June (353mm).
The driest month (with the least rainfall) is January (4mm).

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Average rainfall days in December
Sylhet, Bangladesh

Average rainfall days in December - Sylhet, Bangladesh
  • Average rainfall days in December: 2.5 days

The month with the highest number of rainy days is August (30.2 days).
The month with the least rainy days is January (2.4 days).

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Average daylight in December /
Average sunshine in December
Sylhet, Bangladesh

Average daylight in December / Average sunshine in December - Sylhet, Bangladesh
  • Average daylight in December: 10h and 4min

The month with the longest days is June (Average daylight: 13h and 42min).
The month with the shortest days is December (Average daylight: 10h and 36min).

  • Average sunshine in December: 7h and 2min

The month with the most sunshine is April (Average sunshine: 10h and 30min).
The month with the least sunshine is July (Average sunshine: 6h and 54min).

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Average sunshine days in December
Sylhet, Bangladesh

Average sunshine days in December - Sylhet, Bangladesh
  • Average sunshine days in December: 27.6 days

The months with the most sunshine days are January and December (27.6 days).
The month with the least sunshine days is June (0.4 days).

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Average UV index in December
Sylhet, Bangladesh

Average UV index in December - Sylhet, Bangladesh
  • Average UV index in December: 5

The months with the highest UV index are April and September (UV index 7).
The months with the lowest UV index are January and December (UV index 5).

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Average cloud cover in December
Sylhet, Bangladesh

Average cloud cover in December - Sylhet, Bangladesh
  • Average cloud cover in December: 9

The month with the most cloud cover is July (Cloud cover 62).
The month with the least cloud cover is January (Cloud cover 8).

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Average visibility in December
Sylhet, Bangladesh

Average visibility in December - Sylhet, Bangladesh
  • Average visibility in December: 10km

The months with the highest visibility are January, February, March and December (10km).
The months with the lowest visibility are July, August and September (7km).

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Sylhet, Bangladesh

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