SeasonMapSylhet weather in December
Bangladesh
December in Sylhet: warm, dry, with poor air quality — fine if you can take poor air.
#2 of 12 months in Sylhet · #107 of 1383 destinations to visit in December · comfort 90/100 (tier S)
Updated September 2026 · climate normals from ERA5 reanalysis
Traveller notes on Sylhet in December
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Sylhet climate normals — December
| Daytime high | 25°C / 77°F | 🌤 warm |
|---|---|---|
| Nighttime low | 14°C / 57°F | |
| Feels like (high) | 26°C / 79°F | |
| Rainfall | 25 mm / 1 in | ☀️ dry |
| Rainy days | 2 days | |
| Humidity | 75% | 💧 humid |
| Dew point | 14°C / 57°F | |
| Sunshine | 9.3 h/day | |
| Daylight | 10.6 h | |
| Wind | 7 km/h / 4 mph | |
| Air quality (US AQI) | 117 | 😷 poor |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
Crowds in Sylhet in December
How busy the place itself is — school and mass holidays, the months an editor tagged, and how sought-after the weather makes them. Never part of the comfort score.
Busyschool holidays in 5 of the markets that fill it, one of its best months for weather(estimated)
Peak crowdsBusyShoulder seasonQuiet
Best months for Sylhet's weather
Ranked by this destination's own climate comfort score across the year — a different thing from how busy it gets (see Crowds above).
Best weatherSylhet's weather peaks December–February, best around January.
Best weatherFair weatherToughest weather
What's on in Sylhet in December
Recurring seasonal events, natural spectacles, closures and holidays — curated and sourced.
- Season
Tea garden touring season
1 Oct – 31 Mar · usuallyHarvestAt Malnicherra, one of the world's oldest tea estates and inside the city itself, pickers work the bushes for two leaves and a bud through the cool, dry months from October to March, when clear skies make for easy walking between the rows. The June-to-September monsoon turns the paths to mud. Source ↗
Where is Sylhet?
Sylhet in December — FAQ
- Is December a good time to visit Sylhet?
- December in Sylhet: warm, dry, with poor air quality — fine if you can take poor air. It ranks #2 of 12 months for Sylhet on SeasonMap's comfort score (90/100).
- What is the weather like in Sylhet in December?
- In December, Sylhet averages a daily high of 24.9°C and a low of 14.1°C, with about 25.4 mm of rain over roughly 1.7 rainy days.
- What is the air quality in Sylhet in December?
- Sylhet has a mean US Air Quality Index of about 117 in December.