Sylhet weather in January
In January, Sylhet sees average daytime highs of 24°C and overnight lows near 11°C, with 10 mm of rain across 1.8 wet days and about 10.6 hours of daylight. It is the 12th-warmest and 12th-wettest month of the year here.
Day-to-day highs hold fairly steady near 24°C through the month. The sky is clear or mostly clear about 81% of the time in January, and the air most often feels dry.
Daylight stretches from about 10 h 30 min at the start of January to 10 h 48 min by month's end. Set against the rest of the year, January is Sylhet's 2nd-clearest and 11th-windiest month. For the whole year in context, see Sylhet's year-round climate.
- Daytime high
- 24°
- 12th warmest
- Overnight low
- 11°
- 1st coldest
- Rainfall
- 10 mm
- 1.8 wet days
- Daylight
- 10 h 36 min
- 6:44 AM – 5:20 PM
- Cloud cover
- 22%
- 2nd clearest
- Wind
- 3 km/h
- 11th windiest
- Solar energy
- 4.23 kWh/m²
- Travel score
- 9.0
- out of 10
Sylhet is capital and largest city of Sylhet Division, Bangladesh.
- Air quality
- Severe
- PM2.5 59.8 µg/m³ · 2018
- Density
- 8,943/km²
- people per km²
- Founded
- 1867
Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.
Temperature in January
Day-to-day highs hold fairly steady near 24°C through the month.
A typical January day in Sylhet reaches about 24°C in the afternoon and slips back to 11°C overnight — a 12°C spread between the day's warmth and the night's chill. On most days the high lands between 21°C and 26°C. Set against its neighbours, January runs about 1°C cooler than December and about 2°C cooler than February.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | 24 | 24 | 24 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 |
| Avg low (°C) | 12 | 12 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 12 | 12 | 12 | 12 | 12 |
| Avg high (°C) | Avg low (°C) | |
|---|---|---|
| 1 | 24 | 12 |
| 2 | 24 | 12 |
| 3 | 24 | 11 |
| 4 | 23 | 11 |
| 5 | 23 | 11 |
| 6 | 23 | 11 |
| 7 | 23 | 11 |
| 8 | 23 | 11 |
| 9 | 23 | 11 |
| 10 | 23 | 11 |
| 11 | 23 | 11 |
| 12 | 23 | 11 |
| 13 | 23 | 11 |
| 14 | 23 | 11 |
| 15 | 23 | 11 |
| 16 | 23 | 11 |
| 17 | 23 | 11 |
| 18 | 23 | 11 |
| 19 | 23 | 11 |
| 20 | 23 | 11 |
| 21 | 23 | 11 |
| 22 | 24 | 11 |
| 23 | 24 | 11 |
| 24 | 24 | 11 |
| 25 | 24 | 11 |
| 26 | 24 | 11 |
| 27 | 24 | 12 |
| 28 | 24 | 12 |
| 29 | 24 | 12 |
| 30 | 24 | 12 |
| 31 | 24 | 12 |
How January really feels in Sylhet
Once humidity and wind are folded in, January averages 0 days that feel above 32°C and 0 that feel at or below 0°C — the comfort signal a plain temperature reading hides.
January sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.
Sylhet weather by month
How January compares with the rest of the year at a glance. January is the 12th-warmest and 12th-wettest month here — the current month is highlighted below.
| Month | High / Low (°C) | Rainfall (mm) | Wet days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|
| Jan | 24° / 11° | 10 | 1.8 | 10.6 | 9.0 |
| Feb | 26° / 14° | 48 | 4.6 | 11.1 | 8.2 |
| Mar | 29° / 18° | 187 | 11.2 | 11.8 | 6.1 |
| Apr | 29° / 21° | 560 | 21.4 | 12.6 | 4.0 |
| May | 30° / 23° | 759 | 27.6 | 13.2 | 3.1 |
| Jun | 30° / 25° | 953 | 29.5 | 13.5 | 2.5 |
| Jul | 31° / 25° | 941 | 30.8 | 13.4 | 2.3 |
| Aug | 31° / 26° | 733 | 30.7 | 12.9 | 2.3 |
| Sep | 31° / 25° | 523 | 27.6 | 12.2 | 2.6 |
| Oct | 30° / 23° | 217 | 14.8 | 11.4 | 4.7 |
| Nov | 28° / 17° | 28 | 2.3 | 10.8 | 7.8 |
| Dec | 25° / 13° | 12 | 1.1 | 10.5 | 9.1 |
Cloud cover in January
The sky is clear or mostly clear about 81% of the time in January.
Beyond those clear spells, partly cloudy skies cover about 8% of January, with mostly cloudy or overcast conditions the remaining 11%.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Clearer (%) | 89 | 88 | 88 | 88 | 88 | 88 | 88 | 88 | 88 | 89 | 89 | 89 | 89 | 89 | 89 | 89 | 89 | 90 | 90 | 90 | 90 | 90 | 90 | 90 | 90 | 90 | 90 | 90 | 90 | 90 | 89 |
| Cloudier (%) | 11 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 11 |
| Clearer (%) | Cloudier (%) | |
|---|---|---|
| 1 | 89 | 11 |
| 2 | 88 | 12 |
| 3 | 88 | 12 |
| 4 | 88 | 12 |
| 5 | 88 | 12 |
| 6 | 88 | 12 |
| 7 | 88 | 12 |
| 8 | 88 | 12 |
| 9 | 88 | 12 |
| 10 | 89 | 11 |
| 11 | 89 | 11 |
| 12 | 89 | 11 |
| 13 | 89 | 11 |
| 14 | 89 | 11 |
| 15 | 89 | 11 |
| 16 | 89 | 11 |
| 17 | 89 | 11 |
| 18 | 90 | 10 |
| 19 | 90 | 10 |
| 20 | 90 | 10 |
| 21 | 90 | 10 |
| 22 | 90 | 10 |
| 23 | 90 | 10 |
| 24 | 90 | 10 |
| 25 | 90 | 10 |
| 26 | 90 | 10 |
| 27 | 90 | 10 |
| 28 | 90 | 10 |
| 29 | 90 | 10 |
| 30 | 90 | 10 |
| 31 | 89 | 11 |
Chance of precipitation in January
Sylhet gets around 10 mm of rain over 1.8 wet days in January, the driest month. The line is the day-by-day chance of measurable precipitation.
Day to day, the chance of measurable rain averages around 6% and peaks near 10% on the wettest days. The odds climb toward the end of the month.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rain chance (%) | 3 | 3 | 3 | 3 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 5 | 5 | 5 | 5 | 6 | 6 | 6 | 6 | 7 | 7 | 7 | 7 | 8 | 8 | 9 | 9 | 9 | 9 | 10 | 10 |
| Rain chance (%) | |
|---|---|
| 1 | 3 |
| 2 | 3 |
| 3 | 3 |
| 4 | 3 |
| 5 | 4 |
| 6 | 4 |
| 7 | 4 |
| 8 | 4 |
| 9 | 4 |
| 10 | 4 |
| 11 | 4 |
| 12 | 5 |
| 13 | 5 |
| 14 | 5 |
| 15 | 5 |
| 16 | 6 |
| 17 | 6 |
| 18 | 6 |
| 19 | 6 |
| 20 | 7 |
| 21 | 7 |
| 22 | 7 |
| 23 | 7 |
| 24 | 8 |
| 25 | 8 |
| 26 | 9 |
| 27 | 9 |
| 28 | 9 |
| 29 | 9 |
| 30 | 10 |
| 31 | 10 |
Humidity in January
Most of January feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.
By dew point, January lands in the dry band about 60% of days. It rarely turns muggy — the humid and sticky bands barely register.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Dry (%) | 57 | 59 | 59 | 60 | 61 | 62 | 62 | 62 | 63 | 63 | 63 | 63 | 63 | 62 | 62 | 62 | 62 | 61 | 61 | 61 | 60 | 59 | 59 | 58 | 58 | 57 | 56 | 56 | 54 | 53 | 52 |
| Comfortable (%) | 39 | 38 | 38 | 37 | 37 | 36 | 36 | 36 | 36 | 36 | 36 | 36 | 36 | 36 | 36 | 36 | 36 | 37 | 37 | 37 | 37 | 38 | 38 | 39 | 39 | 40 | 41 | 41 | 42 | 43 | 44 |
| Humid (%) | 3 | 2 | 2 | 2 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 4 | 4 | 4 |
| Muggy (%) | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Dry (%) | Comfortable (%) | Humid (%) | Muggy (%) | |
|---|---|---|---|---|
| 1 | 57 | 39 | 3 | 1 |
| 2 | 59 | 38 | 2 | 1 |
| 3 | 59 | 38 | 2 | 1 |
| 4 | 60 | 37 | 2 | 1 |
| 5 | 61 | 37 | 1 | 1 |
| 6 | 62 | 36 | 1 | 1 |
| 7 | 62 | 36 | 1 | 1 |
| 8 | 62 | 36 | 1 | 1 |
| 9 | 63 | 36 | 1 | 0 |
| 10 | 63 | 36 | 1 | 0 |
| 11 | 63 | 36 | 1 | 0 |
| 12 | 63 | 36 | 1 | 0 |
| 13 | 63 | 36 | 1 | 0 |
| 14 | 62 | 36 | 2 | 0 |
| 15 | 62 | 36 | 2 | 0 |
| 16 | 62 | 36 | 2 | 0 |
| 17 | 62 | 36 | 2 | 0 |
| 18 | 61 | 37 | 2 | 0 |
| 19 | 61 | 37 | 2 | 0 |
| 20 | 61 | 37 | 2 | 0 |
| 21 | 60 | 37 | 3 | 0 |
| 22 | 59 | 38 | 3 | 0 |
| 23 | 59 | 38 | 3 | 0 |
| 24 | 58 | 39 | 3 | 0 |
| 25 | 58 | 39 | 3 | 0 |
| 26 | 57 | 40 | 3 | 0 |
| 27 | 56 | 41 | 3 | 0 |
| 28 | 56 | 41 | 3 | 0 |
| 29 | 54 | 42 | 4 | 0 |
| 30 | 53 | 43 | 4 | 0 |
| 31 | 52 | 44 | 4 | 0 |
Wind in January
Winds average 3 km/h in January.
Across January, daily wind ranges from about 3 km/h on the calmest days to 4 km/h at its breeziest. It stays fairly steady from day to day.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Wind speed (km/h) | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 4 | 4 | 4 | 4 |
| Feels | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm |
| Wind speed (km/h) | Feels | |
|---|---|---|
| 1 | 3 | calm |
| 2 | 3 | calm |
| 3 | 3 | calm |
| 4 | 3 | calm |
| 5 | 3 | calm |
| 6 | 3 | calm |
| 7 | 3 | calm |
| 8 | 3 | calm |
| 9 | 3 | calm |
| 10 | 3 | calm |
| 11 | 3 | calm |
| 12 | 3 | calm |
| 13 | 3 | calm |
| 14 | 3 | calm |
| 15 | 3 | calm |
| 16 | 3 | calm |
| 17 | 3 | calm |
| 18 | 3 | calm |
| 19 | 3 | calm |
| 20 | 3 | calm |
| 21 | 3 | calm |
| 22 | 3 | calm |
| 23 | 3 | calm |
| 24 | 3 | calm |
| 25 | 3 | calm |
| 26 | 3 | calm |
| 27 | 3 | calm |
| 28 | 4 | calm |
| 29 | 4 | calm |
| 30 | 4 | calm |
| 31 | 4 | calm |
Sunrise & sunset in January
Daylight runs from about 10 h 30 min at the start of January to 10 h 48 min by month's end. The lit band spans sunrise to sunset each day.
Days grow by about 18 minutes over January. Sunrise moves from 6:41 AM to 6:41 AM, and sunset from 5:10 PM to 5:31 PM.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight (h) | 10.5 | 10.5 | 10.5 | 10.5 | 10.5 | 10.5 | 10.5 | 10.5 | 10.5 | 10.5 | 10.6 | 10.6 | 10.6 | 10.6 | 10.6 | 10.6 | 10.6 | 10.6 | 10.6 | 10.7 | 10.7 | 10.7 | 10.7 | 10.7 | 10.7 | 10.8 | 10.8 | 10.8 | 10.8 | 10.8 | 10.8 |
| Sunrise (AM) | 6:41 | 6:42 | 6:42 | 6:42 | 6:42 | 6:43 | 6:43 | 6:43 | 6:43 | 6:43 | 6:43 | 6:43 | 6:43 | 6:43 | 6:44 | 6:44 | 6:43 | 6:43 | 6:43 | 6:43 | 6:43 | 6:43 | 6:43 | 6:43 | 6:42 | 6:42 | 6:42 | 6:42 | 6:41 | 6:41 | 6:41 |
| Sunset (PM) | 5:10 | 5:11 | 5:11 | 5:12 | 5:13 | 5:13 | 5:14 | 5:15 | 5:15 | 5:16 | 5:17 | 5:17 | 5:18 | 5:19 | 5:19 | 5:20 | 5:21 | 5:22 | 5:22 | 5:23 | 5:24 | 5:24 | 5:25 | 5:26 | 5:27 | 5:27 | 5:28 | 5:29 | 5:30 | 5:30 | 5:31 |
| Daylight (h) | Sunrise (AM) | Sunset (PM) | |
|---|---|---|---|
| 1 | 10.5 | 6:41 | 5:10 |
| 2 | 10.5 | 6:42 | 5:11 |
| 3 | 10.5 | 6:42 | 5:11 |
| 4 | 10.5 | 6:42 | 5:12 |
| 5 | 10.5 | 6:42 | 5:13 |
| 6 | 10.5 | 6:43 | 5:13 |
| 7 | 10.5 | 6:43 | 5:14 |
| 8 | 10.5 | 6:43 | 5:15 |
| 9 | 10.5 | 6:43 | 5:15 |
| 10 | 10.5 | 6:43 | 5:16 |
| 11 | 10.6 | 6:43 | 5:17 |
| 12 | 10.6 | 6:43 | 5:17 |
| 13 | 10.6 | 6:43 | 5:18 |
| 14 | 10.6 | 6:43 | 5:19 |
| 15 | 10.6 | 6:44 | 5:19 |
| 16 | 10.6 | 6:44 | 5:20 |
| 17 | 10.6 | 6:43 | 5:21 |
| 18 | 10.6 | 6:43 | 5:22 |
| 19 | 10.6 | 6:43 | 5:22 |
| 20 | 10.7 | 6:43 | 5:23 |
| 21 | 10.7 | 6:43 | 5:24 |
| 22 | 10.7 | 6:43 | 5:24 |
| 23 | 10.7 | 6:43 | 5:25 |
| 24 | 10.7 | 6:43 | 5:26 |
| 25 | 10.7 | 6:42 | 5:27 |
| 26 | 10.8 | 6:42 | 5:27 |
| 27 | 10.8 | 6:42 | 5:28 |
| 28 | 10.8 | 6:42 | 5:29 |
| 29 | 10.8 | 6:41 | 5:30 |
| 30 | 10.8 | 6:41 | 5:30 |
| 31 | 10.8 | 6:41 | 5:31 |
Solar energy in January
Average shortwave solar energy reaching the ground each day in January, about 4.23 kWh/m².
For context, solar energy here swings from a low near 3.23 kWh/m² to a high of 5.31 kWh/m² in March across the year — January's 4.23 kWh/m² falls in the middle.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Solar energy (kWh/m²) | 4.0 | 4.0 | 4.0 | 4.1 | 4.1 | 4.1 | 4.1 | 4.1 | 4.1 | 4.1 | 4.2 | 4.2 | 4.2 | 4.2 | 4.2 | 4.2 | 4.3 | 4.3 | 4.3 | 4.3 | 4.3 | 4.3 | 4.4 | 4.4 | 4.4 | 4.4 | 4.5 | 4.5 | 4.5 | 4.5 | 4.5 |
| Level | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright |
| Solar energy (kWh/m²) | Level | |
|---|---|---|
| 1 | 4.0 | Bright |
| 2 | 4.0 | Bright |
| 3 | 4.0 | Bright |
| 4 | 4.1 | Bright |
| 5 | 4.1 | Bright |
| 6 | 4.1 | Bright |
| 7 | 4.1 | Bright |
| 8 | 4.1 | Bright |
| 9 | 4.1 | Bright |
| 10 | 4.1 | Bright |
| 11 | 4.2 | Bright |
| 12 | 4.2 | Bright |
| 13 | 4.2 | Bright |
| 14 | 4.2 | Bright |
| 15 | 4.2 | Bright |
| 16 | 4.2 | Bright |
| 17 | 4.3 | Bright |
| 18 | 4.3 | Bright |
| 19 | 4.3 | Bright |
| 20 | 4.3 | Bright |
| 21 | 4.3 | Bright |
| 22 | 4.3 | Bright |
| 23 | 4.4 | Bright |
| 24 | 4.4 | Bright |
| 25 | 4.4 | Bright |
| 26 | 4.4 | Bright |
| 27 | 4.5 | Bright |
| 28 | 4.5 | Bright |
| 29 | 4.5 | Bright |
| 30 | 4.5 | Bright |
| 31 | 4.5 | Bright |
Hazard calendar for Sylhet
None of Sylhet's seasonal hazards are active in January. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do peak.
Sylhet's monsoon runs April–September, when most of the year's rain falls.
Is January a good time to visit Sylhet?
Our two travel scores rate January for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).
January is one of the better times to visit Sylhet for general sightseeing. The water and warmth also suit a beach or pool day.
What to pack for Sylhet in January
From January's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In January, Sylhet sees daytime highs around 24°C and nights near 11°C. Worth packing: light clothes.
UV index in Sylhet in January
Clear-sky midday UV in January peaks around 4 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Sylhet peaks around July 21 at about 12 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near January 17 at about 4 (moderate).
The index reaches 3 or more — the level where the WHO recommends sun protection — every month of the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 4 | 5 | 8 | 7 | 8 | 6 | 12 | 10 | 11 | 6 | 6 | 5 |
| Level | Moderate | Moderate | Very high | High | Very high | High | Extreme | Extreme | Extreme | High | High | Moderate |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 4 | Moderate |
| Feb | 5 | Moderate |
| Mar | 8 | Very high |
| Apr | 7 | High |
| May | 8 | Very high |
| Jun | 6 | High |
| Jul | 12 | Extreme |
| Aug | 10 | Extreme |
| Sep | 11 | Extreme |
| Oct | 6 | High |
| Nov | 6 | High |
| Dec | 5 | Moderate |
Air quality in Sylhet in January
Average fine-particle pollution (PM2.5) through the year — so you can see where January falls, not just the annual average.
Air quality in Sylhet is worst in January — around 100 µg/m³ PM2.5 (unhealthy), about 4.3× the cleanest month (July, 23 µg/m³).
Seasonal pattern from CAMS reanalysis, scaled to Sylhet's WHO annual average of 59.8 µg/m³.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PM2.5 (µg/m³) | 100 | 94 | 95 | 62 | 44 | 32 | 23 | 30 | 36 | 51 | 67 | 83 |
| Level | Unhealthy | Unhealthy | Unhealthy | Unhealthy | Poor | Moderate | Moderate | Moderate | Poor | Poor | Unhealthy | Unhealthy |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 100 | Unhealthy |
| Feb | 94 | Unhealthy |
| Mar | 95 | Unhealthy |
| Apr | 62 | Unhealthy |
| May | 44 | Poor |
| Jun | 32 | Moderate |
| Jul | 23 | Moderate |
| Aug | 30 | Moderate |
| Sep | 36 | Poor |
| Oct | 51 | Poor |
| Nov | 67 | Unhealthy |
| Dec | 83 | Unhealthy |
Where is Sylhet?
Sylhet sits at 24.9°N, 91.9°E, 26 m above sea level, in Bangladesh. The nearest listed city is Mymensingh, 149 km away.
Topography around Sylhet
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Sylhet.
Within 3 km, the terrain around Sylhet has only modest variations in elevation — a maximum elevation change of 55 m around an average of 19 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 82 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,953 m.
The land around Sylhet is covered by trees (52%) and artificial surfaces (41%) within 3 km, cropland (53%) and trees (39%) within 16 km, and trees (46%) and cropland (40%) within 80 km.
Bangladesh travel facts
- Travel advisory
- Level 3
- Reconsider Travel
- Power plugs
- Type A / C / D / G
- 220 V · 50 Hz
- Prices
- ≈ 25% of US
- price level, 2025
- GDP per capita
- $2,597
- 2025
- Happiness
- 4.3 / 10
- World Happiness, 2025
- Safe drinking water
- 59%
- of population, 2024
- Homicide rate
- 2.3
- per 100k, 2018
- Road deaths
- 15.3
- per 100k/yr, 2019
- Income group
- Lower middle
- World Bank
- English
- Moderate
- EF EPI 506
- Religion
Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.
Data sources
Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Sylhet (24.899°, 91.872°, elevation 26 m), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Monthly air-quality (PM2.5) seasonality is from the CAMS EAC4 reanalysis (Copernicus Atmosphere Monitoring Service), scaled to the WHO annual mean where available. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).