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Sylhet Weather in December
In Sylhet, December brings high daytime temperatures around 27°C (81°F), with nights cooling to 14°C (57°F). Minimal rainfall is to be expected.
Rainfall in Sylhet in December
Records from the past 30 years suggest around a single day of rain, with 14 mm (0.6 in) average for the month. On the rare occasion it does rain, the shower can be quite heavy given the low total spread across a single day.
Temperature in Sylhet in December
December tends to be one of the excellent months in Sylhet, with 27°C (81°F) in the afternoon and 14°C (57°F) overnight. This kind of day-to-night contrast is typical for this time of year. Nights drop to around 14°C (57°F), which is noticeably cooler than the daytime. A light jacket for the evening is a sensible addition, and the cool nights tend to make sleeping comfortable.If you're inclined towards comfortable temperatures and drier conditions, December is a good time to visit Sylhet.
Sylhet Temperature in December
Min Temperature
14°C (57°F)
Max Temperature
27°C (81°F)
Chance of Rain
2%
Precipitation
14 mm (0.6 in)
Rainy days
a single day
Sylhet Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Sylhet - and find the best time to visit.
Daily Historical Temperatures
43-year average (1977-2025)
Based on our historical records, temperatures in Sylhet typically stay consistent throughout December, with daily highs averaging around 27°C (81°F). Nights are pleasant, with lows typically ranging from 12°C (54°F) to 16°C (61°F).
Average temperatures in December
Historical weather records for Sylhet in December
Browse day-by-day weather records for Sylhet spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Sylhet historical weather extremes in December
According to our 20 years of weather records for Sylhet, the following extremes were recorded between 2005 and 2025.
- Sylhet recorded its highest December temperature of 31°C (88°F) on December 3, 2022.
- On December 18, 2018, Sylhet saw its coldest December day with temperatures maxing out at 18°C (64°F).
- Nighttime temperatures dropped to 5°C (41°F) on December 20, 2018, marking the coldest December night on record.
Best Places in Bangladesh in December
Find out more about the weather in Bangladesh and which places have the best travel conditions in this month. See all of Bangladesh in December →
perfect weather
pleasant
tolerable
unpleasant
poor
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).
What to Wear in Sylhet in December
Warm temperatures in December make for comfortable sightseeing weather. Pack breathable fabrics like cotton shirts, knee-length shorts or skirts, and comfortable walking shoes. A thin long sleeve for indoor spaces is handy. With minimal rainfall expected, you can leave the rain gear at home.
What To Do in Sylhet in December
We rated the following activities from 1 (least suitable) to 10 (best) to do.
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Cycling8/10 -
Walking8/10 -
Camping10/10 -
Outdoor sports8/10
Sylhet 3-Day Forecast
More climate data for Sylhet
See the full Sylhet climate overview or explore weather in Bangladesh.
Popular in December
Where to go in December - average daytime high across popular destinations.
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