AI-generatedSylhet at a glance
- Best time
- Nov – Feb
- Warmest month
- Aug · 32°
- Sunshine a year
- 2,020 h
- Rain a year
- 3,728 mm
- Climate
- Tropical
- Time zone
- UTC+6
- Elevation
- 26 m
Climate in Sylhet
Sylhet has a tropical climate: it is warm all year round, and the seasons differ mainly in how much rain falls. August is the warmest month with average highs of 32 °C, while January is the coolest at 24 °C. With around 2,020 hours of sunshine a year, Sylhet is moderately sunny; February is the sunniest month with 7.7 hours a day.
Holiday weather through the year
Best time to visit Sylhet
The best time to visit Sylhet is from November to February. For sightseeing, day trips and hiking, conditions are most comfortable from December to February. The rainy season is from April to September; the wettest month is June with 643 mm.
Sylhet through the seasons
How the weather changes over the seasons, with averages for each.
Sylhet in the dry season
Oct – Mar
Good
- 24–31 °C by day
- 7.2 h of sun a day
- 40 rainy days in all
Sylhet in the rainy season
Apr – Sep
Poor
- 31–32 °C by day
- 3.9 h of sun a day
- 168 rainy days in all
Which month for what?
Beach & swimming
No sea nearby
Sea from 21 °C, warm and mostly dry
Sightseeing & hiking
Dec – Feb
15–28 °C and not too much rain
Rainy months
Apr – Sep
Rainy season or more than 12 rainy days
Find your perfect month
Tell us what you like and we rate every month in Sylhet for you.
Your best months: December – January
Based on the climate averages; tap a month to see its details.
Weather in October
Weather in October
Holiday weather in October
Poor
Best time to visit: November – February
A typical day in October
- Morning, 08:00: about 26°
- Midday, 13:00: about 31°
- Afternoon, 16:00: about 30°
- Evening, 20:00: about 26°
- Night, 23:00: about 24°
05:5017:26
Warm enough for a T-shirt in the evening.
Estimated from the average high and low: coolest around sunrise, warmest in mid-afternoon.
Light for photos in October
- Golden hour
- Morning 05:36–06:20 · evening 16:56–17:41
- Blue hour
- Morning 05:27–05:36 · evening 17:41–17:49
Golden hour: the sun between 4° below and 6° above the horizon; blue hour: 6° to 4° below it. Times for the 15th of the month; mountains and clouds shift the light.
October in Sylhet compared with home
Loading the climate at home …
Early or late October?
In October, daytime highs fall from about 31° at the start of the month to 30° at the end. The days get 0.7 h shorter.
| October | 1 Oct | 31 Oct |
|---|---|---|
| Daytime high | 31° | 30° |
| Night-time low | 23° | 20° |
| Daylight | 11.9 h | 11.3 h |
What is the weather like in Sylhet in October?
In October, Sylhet is hot: daytime highs average 31 °C, and even at night it stays warm at around 22 °C. Expect around 5.6 hours of sunshine a day. It rains often – on about 17 days, adding up to 218 mm. On about 24 days the thermometer climbs to 30 °C or more. The air is often humid and muggy. All in all, October is not an ideal month for a holiday in Sylhet.
More details for October
- Daylight
- 11 h 37 min05:50 – 17:26
- UV index
- 8 · very highclear sky, noon (estimate)All months
- Muggy days
- 30 daysdew point 18 °C or moreAll months
- Wind
- 8 km/haverage daily peakAll months
- Cloud cover
- 49 %on averageAll months
- Hot days
- 24 days30 °C or moreAll months
- Time zone
- UTC+6offset from UTC
How the score comes together
- Temperatureweight 50 %50 %
- Sunshineweight 20 %43 %
- Few rainy daysweight 30 %7 %
Each factor is rated from 0 to 100 % and weighted for the travel style “City break”.
What to pack in October
- Sunscreen
- Sunglasses & sun hat
- Light, breathable clothes
- Water bottle – drink plenty
- Insect repellent
- Rain jacket or umbrella
Compare two months in Sylhet
Pick two months to see how the weather differs. A tick marks the clearly better value; for temperatures it depends on your plans.
January has the better holiday weather in Sylhet: score 95 against 36. In January, days are 7 °C cooler than in October. January has 15 fewer rainy days. The sun shines 2 hours longer a day in January.
| Month | October | January |
|---|---|---|
| Holiday weather score | 36 | 95better |
| Daytime high | 31° | 24° |
| Night-time low | 22° | 12° |
| Sunshine | 5.6 h | 7.5 hbetter |
| Rainy days | 17 | 2better |
| Rainfall | 218 mm | 12 mmbetter |
| Muggy days | 30 | 0better |
Based on the climate averages 1996–2025.
Sylhet month by month
The typical weather for every month at a glance.
95January24° · 7.5 h
In January, Sylhet is warm: daytime highs average 24 °C, and nights cool down to about 12 °C. The sun shines for around 7.5 hours a day. Rain is rare: about 2 days bring 12 mm in total. All in all, January is an excellent month for a holiday in Sylhet.
Sylhet in January95February27° · 7.7 h
In February, Sylhet is warm: daytime highs average 27 °C, and nights cool down to about 14 °C. The sun shines for around 7.7 hours a day. Rain is rare: about 4 days bring 45 mm in total. All in all, February is an excellent month for a holiday in Sylhet.
Sylhet in February58March30° · 7.3 h
In March, Sylhet is hot: daytime highs average 30 °C, and nights cool down to about 18 °C. The sun shines for around 7.3 hours a day. Rain is frequent, with about 12 rainy days and 189 mm in total. On about 17 days the thermometer climbs to 30 °C or more. All in all, March is a so-so month for a holiday in Sylhet.
Sylhet in March33April31° · 5.5 h
In April, Sylhet is hot: daytime highs average 31 °C, and even at night it stays warm at around 21 °C. Expect around 5.5 hours of sunshine a day. It is the rainy season: rain falls on about 22 days, totalling 429 mm. On about 21 days the thermometer climbs to 30 °C or more. The air is often humid and muggy. All in all, April is not an ideal month for a holiday in Sylhet.
Sylhet in April30May31° · 4.4 h
In May, Sylhet is hot: daytime highs average 31 °C, and even at night it stays warm at around 23 °C. Expect around 4.4 hours of sunshine a day. It is the rainy season: rain falls on about 28 days, totalling 592 mm. On about 23 days the thermometer climbs to 30 °C or more. The air is often humid and muggy. All in all, May is not an ideal month for a holiday in Sylhet.
Sylhet in May26June31° · 3.2 h
In June, Sylhet is hot: daytime highs average 31 °C, and even at night it stays warm at around 24 °C. The sun is scarce, with only about 3.2 hours a day. It is the rainy season: rain falls on about 30 days, totalling 643 mm. On about 21 days the thermometer climbs to 30 °C or more. The air is often humid and muggy. All in all, June is not an ideal month for a holiday in Sylhet.
Sylhet in June25July31° · 3.1 h
In July, Sylhet is hot: daytime highs average 31 °C, and even at night it stays warm at around 24 °C. The sun is scarce, with only about 3.1 hours a day. It is the rainy season: rain falls on about 31 days, totalling 588 mm. On about 23 days the thermometer climbs to 30 °C or more. The air is often humid and muggy. All in all, July is not an ideal month for a holiday in Sylhet.
Sylhet in July23August32° · 3.2 h
In August, Sylhet is hot: daytime highs average 32 °C, and even at night it stays warm at around 24 °C. The sun is scarce, with only about 3.2 hours a day. It is the rainy season: rain falls on about 31 days, totalling 522 mm. On about 25 days the thermometer climbs to 30 °C or more. The air is often humid and muggy. All in all, August is not an ideal month for a holiday in Sylhet.
Sylhet in August25September32° · 4.0 h
In September, Sylhet is hot: daytime highs average 32 °C, and even at night it stays warm at around 24 °C. Expect around 4.0 hours of sunshine a day. It is the rainy season: rain falls on about 28 days, totalling 440 mm. On about 24 days the thermometer climbs to 30 °C or more. The air is often humid and muggy. All in all, September is not an ideal month for a holiday in Sylhet.
Sylhet in September36October31° · 5.6 h
In October, Sylhet is hot: daytime highs average 31 °C, and even at night it stays warm at around 22 °C. Expect around 5.6 hours of sunshine a day. It rains often – on about 17 days, adding up to 218 mm. On about 24 days the thermometer climbs to 30 °C or more. The air is often humid and muggy. All in all, October is not an ideal month for a holiday in Sylhet.
Sylhet in October83November29° · 7.5 h
In November, Sylhet is hot: daytime highs average 29 °C, and nights cool down to about 17 °C. The sun shines for around 7.5 hours a day. Rain is rare: about 3 days bring 34 mm in total. On about 7 days the thermometer climbs to 30 °C or more. All in all, November is an excellent month for a holiday in Sylhet.
Sylhet in November95December26° · 7.4 h
In December, Sylhet is warm: daytime highs average 26 °C, and nights cool down to about 13 °C. The sun shines for around 7.4 hours a day. It hardly ever rains. All in all, December is an excellent month for a holiday in Sylhet.
Sylhet in DecemberClimate in detail
Climate through the year
Long-term monthly averages. Tap a month to see its details.
Nights and sleep in Sylhet
How warm the nights get in each month, from the mean night-time low. Tap a month for details.
- Cool 8–15°
- Pleasant 15–20°
- Warm 20–24°
- Hot 24° and more
- muggy month (15+ muggy days)
WarmOctober: nights around 22°. Tropical nights: a fan or air conditioning helps. Muggy on about 30 days (dew point 18 °C or more).
The coolest nights are in January (12°), the warmest in August (24°). Tropical nights of 20 °C and more are the rule from April to October; then air conditioning or a fan helps you sleep. Nights are pleasant for sleeping (15 to 20 °C) in March and in November. It is muggy (dew point 18 °C or more) on about 236 days a year, mostly from April to October.
Temperatures through the year
Average daytime high, night-time low and sea temperature per month.
| Month | Score | Day | Night | Sun | Rain days | Rain mm |
|---|---|---|---|---|---|---|
| JanuaryJan | 95 | 24° | 12° | 7.5 h | 2 | 12 |
| FebruaryFeb | 95 | 27° | 14° | 7.7 h | 4 | 45 |
| MarchMar | 58 | 30° | 18° | 7.3 h | 12 | 189 |
| AprilApr | 33 | 31° | 21° | 5.5 h | 22 | 429 |
| MayMay | 30 | 31° | 23° | 4.4 h | 28 | 592 |
| JuneJun | 26 | 31° | 24° | 3.2 h | 30 | 643 |
| JulyJul | 25 | 31° | 24° | 3.1 h | 31 | 588 |
| AugustAug | 23 | 32° | 24° | 3.2 h | 31 | 522 |
| SeptemberSep | 25 | 32° | 24° | 4.0 h | 28 | 440 |
| OctoberOct | 36 | 31° | 22° | 5.6 h | 17 | 218 |
| NovemberNov | 83 | 29° | 17° | 7.5 h | 3 | 34 |
| DecemberDec | 95 | 26° | 13° | 7.4 h | 2 | 17 |
Climate averages 1996–2025 (sunshine partly WMO station normals 1991–2020), not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0). Sources & licences
24.90° N, 91.87° E · 26 m · Asia/Dhaka
Sunshine hours in Sylhet
Average hours of bright sunshine per day, next to the length of the day. Tap a month to select it.
In October, the sun shines for about 5.6 of 11.6 hours of daylight in Sylhet, 48 % of the daylight hours.
Sunshine hours: estimated from radiation data (ERA5, 1996–2025) and calibrated against measured station values; no weather station is close enough here. Daylight is the time from sunrise to sunset on the 15th of the month.
Rain in Sylhet: rainy days and rainfall
A rainy day is a day with at least 1 mm of rain or snow; the amount is what falls in the whole month. Tap a month to select it.
In October, Sylhet has about 17 rainy days with 218 mm of rain in total.
UV index in Sylhet
How strong the sun is at noon, month by month, and how quickly unprotected skin burns.
- Clear-sky UV in October
- 8 · very highStay in the shade around midday; SPF 50, clothing, hat and sunglasses.
The sun is strongest in June (UV 12).
Minutes until sunburn in October
- Very fair skin
- about 15 min
- Fair skin
- about 20 min
- Light brown skin
- about 30 min
- Olive skin
- about 40 min
Rough guide for unprotected skin at noon under a clear sky; clouds lengthen the time, water, sand and snow shorten it. Sunscreen extends the time only partly.
Monthly values: clear-sky noon estimate from the sun's angle, ozone and altitude. UV today: Open-Meteo forecast.
Wind and clouds in Sylhet
How breezy and how cloudy Sylhet is through the year. Tap a month to select it on the whole page.
Wind
Typical daily peak of the wind in km/h: what the afternoon breeze usually reaches, not the gusts.
In October, the wind in Sylhet typically peaks at 8 km/h during the day: Beaufort 2, light breeze or less.
Clouds
Average share of the sky covered by cloud, day and night.
In October, cloud covers on average 49 % of the sky over Sylhet: variable cloud, with about 5.6 hours of sunshine a day.
Wind: mean daily maximum of the hourly wind 10 m above ground (ERA5, 1996–2025). Gusts are stronger, and the model grid of about 28 km smooths out local effects such as capes and valley winds. Clouds: mean total cloud cover of all layers over day and night (ERA5, 1996–2025). Thin high cloud counts as cover even when the sun still shines through.
Heat and humidity in Sylhet
How often the day gets hot in Sylhet (30 °C and more), and in which months heat and humidity come together. Tap a month to select it.
Heat calendar
- pleasant
- some hot or muggy days
- often muggy
- often hot
- hot and muggy
In October, Sylhet has about 24 hot days, with an average daytime high of 31 °C: hot and muggy. Plan outdoor activities for the morning and evening, drink a lot and take breaks in the cool.
Hot days reach at least 30 °C; a month counts as muggy when the mean dew point reaches 18 °C on at least 15 days. Averages from ERA5 and ERA5-Land, 1996–2025. Muggy nights through the year
Planning a trip to Sylhet
Weather for your travel dates
Pick your arrival and length of stay, and we sum up the weather to expect.
Sylhet in the school holidays
How the weather suits the usual holiday periods. Dates vary by school and region, so each holiday uses the months it usually falls in.
Sylhet has its best school-holiday weather during the Christmas holidays (score 95) and its weakest during the summer holidays (score 24).
- 41
Easter holidays
Mar – Apr
Fair
- 31 °C by day
- 6.0 h of sun a day
- 19 rainy days a month
Keep in mind: Frequent rain
- 29
May half-term
May – Jun
Poor
- 31 °C by day
- 4.2 h of sun a day
- 28 rainy days a month
Keep in mind: Frequent rain
- 24
Summer holidays
Jul – Aug
Poor
- 31 °C by day
- 3.2 h of sun a day
- 31 rainy days a month
Keep in mind: Frequent rain
- 36
October half-term
Oct
Poor
- 31 °C by day
- 5.6 h of sun a day
- 17 rainy days a month
- 95
Christmas holidays
Dec – Jan
ExcellentBest holidays
- 25 °C by day
- 7.5 h of sun a day
- 2 rainy days a month
Good for: Sightseeing & walks
Based on the climate averages 1996–2025.
Getting there
Flying from
- Nonstop flight
- about 10 h 10 min
- Distance
- 8,020 km
- Time zone
- UTC+6
- Jet lag
- About 5 days (5 h east)
Rule of thumb for flying east: for a few days before, go to bed and get up a little earlier, and get plenty of morning light at your destination.
Estimated from the straight-line distance: 30 minutes for take-off and landing plus 830 km/h cruising speed.
Compare & alternatives
Sylhet compared
Put Sylhet side by side with another destination.
Sylhet vs Cherrapunji
In October Cherrapunji has the better holiday weather (score 57 vs 36). During the day Cherrapunji is 8 °C cooler than Sylhet. Cherrapunji gets one hour less sunshine a day.
| in October | Sylhet | Cherrapunji |
|---|---|---|
| Holiday weather score | 36 | 57 |
| Daytime high | 31° | 23° |
| Sunshine | 6 h | 5 h |
| Rainy days | 17 | 21 |
| Best time | Nov – Feb | Nov – Feb |
Through the year
Bangladesh in October: the best places
In October, Sylhet ranks 9 of 9 destinations in this country.
- Mymensingh31°42
- 2Barishal31°29°41
- 3Cox's Bazar30°30°41
- 4Chattogram31°29°40
- 5Rajshahi33°40
- 6Dhaka32°38
- 7Khulna32°38
- 8Sonargaon32°37
- 9SylhetThis page31°36
Near Sylhet
Other destinations close by.
Places with a climate like Sylhet
Destinations whose weather through the year is closest to Sylhet's – good alternatives.
Frequently asked questions about Sylhet
When is the best time to visit Sylhet?
The best time to visit Sylhet is from November to February. That is when the holiday weather score, which combines temperature, sea, sunshine and rain, is highest.
What is the warmest month in Sylhet?
August is the warmest month, with average highs of 32 °C and nights around 24 °C. January is the coolest month at 24 °C.
When does it rain most in Sylhet?
The rainy season is from April to September; the wettest month is June with 643 mm. The driest month is January with 12 mm.
How many hours of sunshine does Sylhet get?
Sylhet gets around 2,020 hours of sunshine a year. The sunniest month is February with 7.7 hours a day; in July there are 3.1 hours a day.
What time zone is Sylhet in?
Sylhet is on UTC+6 all year.
How long is the flight from London to Sylhet?
A nonstop flight from London to Sylhet takes about 10 h 10 min, for a straight-line distance of about 8,020 km.
Which school holidays are best for Sylhet?
Sylhet has its best school-holiday weather during the Christmas holidays (score 95) and its weakest during the summer holidays (score 24). Holiday ratings (0–100): Easter holidays 41, May half-term 29, summer holidays 24, October half-term 36, Christmas holidays 95.