AI-generatedChattogram at a glance
- Best time
- Nov – Feb
- Warmest month
- Apr · 33°
- Warmest sea
- May · 29.5°
- Sunshine a year
- 2,260 h
- Rain a year
- 2,549 mm
- Climate
- Tropical
- Time zone
- UTC+6
- Elevation
- 15 m
Climate in Chattogram
Chattogram has a tropical climate: it is warm all year round, and the seasons differ mainly in how much rain falls. April is the warmest month with average highs of 33 °C, while January is the coolest at 26 °C. With around 2,260 hours of sunshine a year, Chattogram is sunny; February is the sunniest month with 8.1 hours a day.
Holiday weather through the year
Best time to visit Chattogram
The best time to visit Chattogram is from November to February. In November, though, the cyclone season is at its peak: check the forecast before you go. For a beach holiday – sea from 21 °C, warm and mostly dry – go from November to April. For sightseeing, day trips and hiking, conditions are most comfortable from December to January. In April it can get very hot, with highs of up to 33 °C. The rainy season is from May to September; the wettest month is July with 551 mm.
Chattogram through the seasons
How the weather changes over the seasons, with averages for each.
Chattogram in the dry season
Oct – Apr
Good
- 26–33 °C by day
- Sea 26 °C
- 7.4 h of sun a day
- 36 rainy days in all
Chattogram in the rainy season
May – Sep
Poor
- 30–33 °C by day
- Sea 29 °C
- 4.5 h of sun a day
- 131 rainy days in all
Which month for what?
Beach & swimming
Nov – Apr
Sea from 21 °C, warm and mostly dry
Sightseeing & hiking
Dec – Jan
15–28 °C and not too much rain
Peak heat
Apr
Highs of 33 °C or more
Rainy months
May – Sep
Rainy season or more than 12 rainy days
Find your perfect month
Tell us what you like and we rate every month in Chattogram 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
Fair
Best time to visit: November – February
October is in the cyclone season Hurricane season
Where to go in OctoberSea temperature in October
Keep in mindStorm season
A typical day in October
- Morning, 08:00: about 27°
- Midday, 13:00: about 31°
- Afternoon, 16:00: about 30°
- Evening, 20:00: about 27°
- Night, 23:00: about 26°
05:4817:28
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 05:34–06:18 · evening 16:58–17:42
- Blue hour
- Morning 05:26–05:34 · evening 17:42–17:51
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 Chattogram 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 sea cools from 29° to 28°. The days get 0.6 h shorter.
| October | 1 Oct | 31 Oct |
|---|---|---|
| Daytime high | 31° | 30° |
| Night-time low | 24° | 22° |
| Sea | 29° | 28° |
| Daylight | 12.0 h | 11.4 h |
What is the weather like in Chattogram in October?
In October, Chattogram is hot: daytime highs average 31 °C, and even at night it stays warm at around 24 °C. The sea averages 29.4 °C – almost as warm as a bath. Expect around 5.6 hours of sunshine a day. It rains often – on about 16 days, adding up to 200 mm. On about 23 days the thermometer climbs to 30 °C or more. The air is often humid and muggy. All in all, October is a so-so month for a holiday in Chattogram.
More details for October
- Daylight
- 11 h 40 min05:48 – 17:28
- UV index
- 9 · very highclear sky, noon (estimate)All months
- Muggy days
- 31 daysdew point 18 °C or moreAll months
- Wind
- 12 km/haverage daily peakAll months
- Cloud cover
- 52 %on averageAll months
- Hot days
- 23 days30 °C or moreAll months
- Time zone
- UTC+6offset from UTC
How the score comes together
- Temperatureweight 50 %54 %
- Sunshineweight 20 %43 %
- Few rainy daysweight 30 %14 %
Each factor is rated from 0 to 100 % and weighted for the travel style “City break”.
What to pack in October
- Swimwear
- Sunscreen
- Sunglasses & sun hat
- Light, breathable clothes
- Water bottle – drink plenty
- Insect repellent
- Rain jacket or umbrella
Compare two months in Chattogram
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 Chattogram: score 96 against 40. In January, days are 5 °C cooler than in October. The sea is 8 °C cooler in January. January has 15 fewer rainy days. The sun shines 2 hours longer a day in January.
| Month | October | January |
|---|---|---|
| Holiday weather score | 40 | 96better |
| Daytime high | 31° | 26° |
| Night-time low | 24° | 15° |
| Sea | 29.4° | 21.5° |
| Sunshine | 5.6 h | 7.9 hbetter |
| Rainy days | 16 | 1better |
| Rainfall | 200 mm | 6 mmbetter |
| Muggy days | 31 | 1better |
Based on the climate averages 1996–2025.
Chattogram month by month
The typical weather for every month at a glance.
96January26° · Sea 22° · 7.9 h
In January, Chattogram is warm: daytime highs average 26 °C, and nights cool down to about 15 °C. The sea averages 21.5 °C – refreshing for a swim. The sun shines for around 7.9 hours a day. It hardly ever rains. All in all, January is an excellent month for a holiday in Chattogram.
Chattogram in January86February29° · Sea 23° · 8.1 h
In February, Chattogram is hot: daytime highs average 29 °C, and nights cool down to about 17 °C. The sea averages 22.7 °C – refreshing for a swim. The sun shines for around 8.1 hours a day. It hardly ever rains. On about 8 days the thermometer climbs to 30 °C or more. All in all, February is an excellent month for a holiday in Chattogram.
Chattogram in February66March32° · Sea 26° · 8.1 h
In March, Chattogram is hot: daytime highs average 32 °C, and even at night it stays warm at around 22 °C. The sea averages 26.1 °C – lovely and warm for swimming. The sun shines for around 8.1 hours a day. Rain is rare: about 4 days bring 40 mm in total. On about 27 days the thermometer climbs to 30 °C or more. The air is often humid and muggy. All in all, March is a good month for a holiday in Chattogram.
Chattogram in March46April33° · Sea 29° · 7.5 h
In April, Chattogram is very hot: daytime highs average 33 °C, and even at night it stays warm at around 25 °C. The sea averages 28.5 °C – lovely and warm for swimming. The sun shines for around 7.5 hours a day. Rain is frequent, with about 9 rainy days and 92 mm in total. On about 28 days the thermometer climbs to 30 °C or more. The air is often humid and muggy. All in all, April is a so-so month for a holiday in Chattogram.
Chattogram in April26May33° · Sea 30° · 6.2 h
In May, Chattogram is hot: daytime highs average 33 °C, and even at night it stays warm at around 25 °C. The sea averages 29.5 °C – almost as warm as a bath. Expect around 6.2 hours of sunshine a day. It is the rainy season: rain falls on about 20 days, totalling 285 mm. On about 28 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 Chattogram.
Chattogram in May30June31° · Sea 29° · 4.2 h
In June, Chattogram is hot: daytime highs average 31 °C, and even at night it stays warm at around 25 °C. The sea averages 29.3 °C – almost as warm as a bath. Expect around 4.2 hours of sunshine a day. It is the rainy season: rain falls on about 27 days, totalling 505 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 Chattogram.
Chattogram in June31July30° · Sea 29° · 3.7 h
In July, Chattogram is hot: daytime highs average 30 °C, and even at night it stays warm at around 25 °C. The sea averages 28.9 °C – lovely and warm for swimming. The sun is scarce, with only about 3.7 hours a day. It is the rainy season: rain falls on about 30 days, totalling 551 mm. On about 19 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 Chattogram.
Chattogram in July31August31° · Sea 29° · 3.9 h
In August, Chattogram is hot: daytime highs average 31 °C, and even at night it stays warm at around 25 °C. The sea averages 28.8 °C – lovely and warm for swimming. The sun is scarce, with only about 3.9 hours a day. It is the rainy season: rain falls on about 29 days, totalling 470 mm. On about 20 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 Chattogram.
Chattogram in August32September31° · Sea 29° · 4.6 h
In September, Chattogram is hot: daytime highs average 31 °C, and even at night it stays warm at around 25 °C. The sea averages 29.3 °C – almost as warm as a bath. Expect around 4.6 hours of sunshine a day. It is the rainy season: rain falls on about 26 days, totalling 344 mm. On about 22 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 Chattogram.
Chattogram in September40October31° · Sea 29° · 5.6 h
In October, Chattogram is hot: daytime highs average 31 °C, and even at night it stays warm at around 24 °C. The sea averages 29.4 °C – almost as warm as a bath. Expect around 5.6 hours of sunshine a day. It rains often – on about 16 days, adding up to 200 mm. On about 23 days the thermometer climbs to 30 °C or more. The air is often humid and muggy. All in all, October is a so-so month for a holiday in Chattogram.
Chattogram in October82November29° · Sea 27° · 7.3 h
In November, Chattogram is hot: daytime highs average 29 °C, and even at night it stays warm at around 20 °C. The sea averages 27.3 °C – lovely and warm for swimming. The sun shines for around 7.3 hours a day. Rain is rare: about 3 days bring 37 mm in total. On about 7 days the thermometer climbs to 30 °C or more. The air is often humid and muggy. All in all, November is an excellent month for a holiday in Chattogram.
Chattogram in November94December27° · Sea 24° · 7.2 h
In December, Chattogram is warm: daytime highs average 27 °C, and nights cool down to about 17 °C. The sea averages 23.9 °C – pleasant for swimming. The sun shines for around 7.2 hours a day. It hardly ever rains. All in all, December is an excellent month for a holiday in Chattogram.
Chattogram in DecemberClimate in detail
Year & climate table
Climate through the year
Long-term monthly averages. Tap a month to see its details.
Nights and sleep in Chattogram
How warm the nights get in each month, from the mean night-time low. Tap a month for details.
- Pleasant 15–20°
- Warm 20–24°
- Hot 24° and more
- muggy month (15+ muggy days)
HotOctober: nights around 24°. Hot nights: air conditioning makes sleeping much easier. Muggy on about 31 days (dew point 18 °C or more).
The coolest nights are in January (15°), the warmest in May (25°). Tropical nights of 20 °C and more are the rule from March to November; then air conditioning or a fan helps you sleep. Nights are pleasant for sleeping (15 to 20 °C) from December to February. It is muggy (dew point 18 °C or more) on about 272 days a year, mostly from March to November.
Temperatures through the year
Average daytime high, night-time low and sea temperature per month.
| Month | Score | Day | Night | Sea | Sun | Rain days | Rain mm |
|---|---|---|---|---|---|---|---|
| JanuaryJan | 96 | 26° | 15° | 21.5° | 7.9 h | 1 | 6 |
| FebruaryFeb | 86 | 29° | 17° | 22.7° | 8.1 h | 1 | 9 |
| MarchMar | 66 | 32° | 22° | 26.1° | 8.1 h | 4 | 40 |
| AprilApr | 46 | 33° | 25° | 28.5° | 7.5 h | 9 | 92 |
| MayMay | 26 | 33° | 25° | 29.5° | 6.2 h | 20 | 285 |
| JuneJun | 30 | 31° | 25° | 29.3° | 4.2 h | 27 | 505 |
| JulyJul | 31 | 30° | 25° | 28.9° | 3.7 h | 30 | 551 |
| AugustAug | 31 | 31° | 25° | 28.8° | 3.9 h | 29 | 470 |
| SeptemberSep | 32 | 31° | 25° | 29.3° | 4.6 h | 26 | 344 |
| OctoberOct | 40 | 31° | 24° | 29.4° | 5.6 h | 16 | 200 |
| NovemberNov | 82 | 29° | 20° | 27.3° | 7.3 h | 3 | 37 |
| DecemberDec | 94 | 27° | 17° | 23.9° | 7.2 h | 1 | 11 |
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
22.34° N, 91.83° E · 15 m · Asia/Dhaka
Sea temperature
Sea temperature in Chattogram
Monthly sea surface temperature with the range of cooler and warmer years.
8 in 10 years: 28.9 – 30.1 °C
Swimming season: all year
- cold
- fresh
- refreshing
- pleasant
- warm
- very warm
The sea temperature in Chattogram ranges from 21.5 °C in January to 29.5 °C in May. At 20 °C and more, the sea is warm enough for swimming all year round.
The sea warms up slowly: it is warmest in May, while the air already peaks in April. The sea temperature varies from year to year: in May, eight out of ten years were between 28.5 and 30.3 °C.
| Month | Average | Cool year | Warm year | Feels |
|---|---|---|---|---|
| JanuaryJan | 21.5° | 20.7° | 22.4° | refreshing |
| FebruaryFeb | 22.7° | 21.7° | 23.7° | refreshing |
| MarchMar | 26.1° | 25.4° | 26.8° | warm |
| AprilApr | 28.5° | 27.5° | 29.4° | warm |
| MayMay | 29.5° | 28.5° | 30.3° | very warm |
| JuneJun | 29.3° | 28.4° | 30.0° | very warm |
| JulyJul | 28.9° | 28.0° | 29.6° | warm |
| AugustAug | 28.8° | 28.0° | 29.5° | warm |
| SeptemberSep | 29.3° | 28.6° | 29.9° | very warm |
| OctoberOct | 29.4° | 28.9° | 30.1° | very warm |
| NovemberNov | 27.3° | 26.7° | 27.9° | warm |
| DecemberDec | 23.9° | 23.2° | 24.6° | pleasant |
Sunshine
Sunshine hours in Chattogram
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 11.7 hours of daylight in Chattogram, 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
Rain in Chattogram: 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, Chattogram has about 16 rainy days with 200 mm of rain in total.
UV index
UV index in Chattogram
How strong the sun is at noon, month by month, and how quickly unprotected skin burns.
- Clear-sky UV in October
- 9 · very highStay in the shade around midday; SPF 50, clothing, hat and sunglasses.
The sun is strongest in July (UV 12).
Minutes until sunburn in October
- Very fair skin
- about 15 min
- Fair skin
- about 20 min
- Light brown skin
- about 25 min
- Olive skin
- about 35 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 & clouds
Wind and clouds in Chattogram
How breezy and how cloudy Chattogram 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 Chattogram typically peaks at 12 km/h during the day: Beaufort 3, gentle breeze.
Breezy months for windsurfing and kiting
From Beaufort 4 (20 km/h) the daily breeze is usually enough for windsurfing and often for kiting: Jun – Aug.
Clouds
Average share of the sky covered by cloud, day and night.
In October, cloud covers on average 52 % of the sky over Chattogram: 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 & humidity
Heat and humidity in Chattogram
How often the day gets hot in Chattogram (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, Chattogram has about 23 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 Chattogram
Weather for your travel dates
Pick your arrival and length of stay, and we sum up the weather to expect.
Chattogram 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.
Chattogram has its best school-holiday weather during the Christmas holidays (score 95) and its weakest during May half-term (score 27).
- 52
Easter holidays
Mar – Apr
Fair
- 33 °C by day
- Sea 28 °C
- 7.7 h of sun a day
- 8 rainy days a month
Good for: Beach & swimming
Keep in mind: Peak heat, Storm season
- 27
May half-term
May – Jun
Poor
- 32 °C by day
- Sea 29 °C
- 5.8 h of sun a day
- 21 rainy days a month
Keep in mind: Frequent rain, Storm season
- 31
Summer holidays
Jul – Aug
Poor
- 30 °C by day
- Sea 29 °C
- 3.8 h of sun a day
- 29 rainy days a month
Keep in mind: Frequent rain
- 40
October half-term
Oct
Fair
- 31 °C by day
- Sea 29 °C
- 5.6 h of sun a day
- 16 rainy days a month
Keep in mind: Storm season
- 95
Christmas holidays
Dec – Jan
ExcellentBest holidays
- 26 °C by day
- Sea 23 °C
- 7.6 h of sun a day
- 1 rainy day a month
Good for: Beach & swimming, Sightseeing & walks
Keep in mind: Storm season
Based on the climate averages 1996–2025.
Getting there
Flying from
- Nonstop flight
- about 10 h 25 min
- Distance
- 8,240 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.
Good to know: Bangladesh
- Currency
- Bangladeshi Taka (BDT)
- Language
- Bangla
- Sockets
- Type A, C, D, G, K · 220 V
- Traffic
- Drives on the left
- Dialling code
- +880
- Emergency number
- 999
UK plugs fit
Sources: GeoNames (CC BY 4.0) and Wikidata (CC0). Please check details before you travel.
Storm season
Chattogram lies in an area that cyclones from the northern Indian Ocean can reach. The cyclone season runs from April to June and from October to December, with most storms in May and in November. A direct hit on any one place is rare, but if you travel then, keep an eye on weather warnings and book flexibly.
- January
- February
- March
- April: Season
- May: Peak
- June: Season
- July
- August
- September
- October: Season
- November: Peak
- December: Season
Official season dates of the regional warning centres (NOAA, JMA, IMD, Météo-France, BoM, Fiji Meteorological Service); not a forecast.
Compare & alternatives
Compare with another place
Chattogram compared
Put Chattogram side by side with another destination.
Chattogram vs Cox's Bazar
In October the holiday weather in Chattogram and Cox's Bazar is about equally good (score 40 vs 40). During the day it is about as warm in Cox's Bazar as in Chattogram. The sea in Cox's Bazar is 1 °C warmer.
| in October | Chattogram | Cox's Bazar |
|---|---|---|
| Holiday weather score | 40 | 40 |
| Daytime high | 31° | 31° |
| Sea | 29° | 30° |
| Sunshine | 6 h | 6 h |
| Rainy days | 16 | 16 |
| Best time | Nov – Feb | Nov – Feb |
Through the year
Best places in the country
Bangladesh in October: the best places
In October, Chattogram ranks 5 of 11 destinations in this country.
- Bogura31°44
- 2Rangpur31°43
- 3Barishal31°29°41
- 4Mymensingh31°41
- 5ChattogramThis page31°29°40
- 6Cox's Bazar31°30°40
- 7Rajshahi33°40
- 8Dhaka32°38
Places nearby
Near Chattogram
Other destinations close by.
Places with a similar climate
Places with a climate like Chattogram
Destinations whose weather through the year is closest to Chattogram's – good alternatives.
Frequently asked questions about Chattogram
When is the best time to visit Chattogram?
The best time to visit Chattogram is from November to February. That is when the holiday weather score, which combines temperature, sea, sunshine and rain, is highest.
How warm is the sea in Chattogram?
The sea temperature in Chattogram ranges from 21.5 °C in January to 29.5 °C in May. At 20 °C and more, the sea is warm enough for swimming all year round.
Can you swim in Chattogram in October?
Yes. In October the sea averages 29.4 °C – almost as warm as a bath.
What is the warmest month in Chattogram?
April is the warmest month, with average highs of 33 °C and nights around 25 °C. January is the coolest month at 26 °C.
When does it rain most in Chattogram?
The rainy season is from May to September; the wettest month is July with 551 mm. The driest month is January with 6 mm.
How many hours of sunshine does Chattogram get?
Chattogram gets around 2,260 hours of sunshine a year. The sunniest month is February with 8.1 hours a day; in July there are 3.7 hours a day.
What time zone is Chattogram in?
Chattogram is on UTC+6 all year.
How long is the flight from London to Chattogram?
A nonstop flight from London to Chattogram takes about 10 h 25 min, for a straight-line distance of about 8,240 km.
When is cyclone season in Chattogram?
Chattogram lies in an area that cyclones from the northern Indian Ocean can reach. The cyclone season runs from April to June and from October to December, with most storms in May and in November. A direct hit on any one place is rare, but if you travel then, keep an eye on weather warnings and book flexibly.
Which school holidays are best for Chattogram?
Chattogram has its best school-holiday weather during the Christmas holidays (score 95) and its weakest during May half-term (score 27). Holiday ratings (0–100): Easter holidays 52, May half-term 27, summer holidays 31, October half-term 40, Christmas holidays 95.