Chittagong weather in October

In October, Chittagong sees average daytime highs of 29°C and overnight lows near 26°C, with 203 mm of rain across 17.3 wet days and about 11.5 hours of daylight. It is the 4th-warmest and 6th-wettest month of the year here.

Day-to-day highs hold fairly steady near 29°C through the month. The sky is clear or mostly clear about 47% of the time in October, and the air most often feels miserable.

Daylight stretches from about 11 h 48 min at the start of October to 11 h 12 min by month's end. Set against the rest of the year, October is Chittagong's 8th-clearest and 11th-windiest month. For the whole year in context, see Chittagong's year-round climate.

Daytime high
29°
4th warmest
Overnight low
26°
6th coldest
Rainfall
203 mm
17.3 wet days
Daylight
11 h 30 min
5:53 AM – 5:22 PM
Cloud cover
50%
8th clearest
Wind
10 km/h
11th windiest
Solar energy
4.4 kWh/m²
Travel score
4.8
out of 10

Chittagong is second largest city of Bangladesh, situated at the southwestern part of the country.

Air quality
Severe
PM2.5 56.4 µg/m³ · 2018
Density
24,351/km²
people per km²

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Temperature in October

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 29°C through the month.

A typical October day in Chittagong reaches about 29°C in the afternoon and slips back to 26°C overnight — a 3°C spread between the day's warmth and the night's chill. On most days the high lands between 27°C and 30°C. Set against its neighbours, October runs on par with September and about 2°C warmer than November.

20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
12927
22926
32926
42926
52926
62926
72926
82926
92926
102926
112926
122926
132926
142926
152926
162926
172926
182926
192926
202926
212926
222926
232926
242926
252925
262925
272925
282925
292925
302925
312925

How October really feels in Chittagong

Once humidity and wind are folded in, October averages 31 days that feel above 32°C and 0 that feel at or below 0°C — the comfort signal a plain temperature reading hides.

Days feeling ≥ 32°C
31
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

The story in October is heat — humidity pushes the afternoon "feels like" well above the raw temperature.

Chittagong weather by month

How October compares with the rest of the year at a glance. October is the 4th-warmest and 6th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan23° / 18°60.810.89.3
Feb25° / 20°141.811.29.0
Mar28° / 24°464.411.87.6
Apr29° / 26°989.412.55.7
May30° / 27°29120.513.14.1
Jun29° / 27°58326.813.33.1
Jul29° / 27°60629.313.23.0
Aug29° / 27°45428.712.83.1
Sep29° / 27°34025.612.13.3
Oct29° / 26°20317.311.54.8
Nov27° / 23°483.910.97.8
Dec25° / 19°121.210.79.1

Cloud cover in October

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 47% of the time in October.

Beyond those clear spells, partly cloudy skies cover about 9% of October, with mostly cloudy or overcast conditions the remaining 44%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
13466
23565
33862
44060
54060
64357
74555
84555
94753
105050
115149
125248
135446
145644
155743
165941
176040
186337
196337
206436
216535
226634
236634
246733
256733
266832
276832
286931
296931
307030
317030

Chance of precipitation in October

Any precipitation

Chittagong gets around 203 mm of rain over 17.3 wet days in October. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 55% and peaks near 78% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%80%151015202531
Rain chance (%)
178
277
376
475
574
673
772
871
970
1068
1166
1265
1363
1460
1558
1656
1754
1851
1949
2047
2145
2243
2341
2439
2538
2636
2735
2833
2932
3030
3129

Humidity in October

DryComfortableHumidMuggyOppressiveMiserable

Most of October feels miserable — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, October lands in the miserable band about 68% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202531
Muggy (%)Oppressive (%)Miserable (%)
10397
20496
30496
40595
50595
60694
70793
80892
90991
1001189
1111386
1211584
1311782
1412079
1512376
1612673
1722969
1823266
1933562
2033859
2144155
2244452
2354748
2465044
2565341
2675538
2785735
2895932
29106129
30116227
31126325

Wind in October

Winds average 10 km/h in October.

Across October, daily wind ranges from about 9 km/h on the calmest days to 11 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
111calm
211calm
311calm
411calm
510calm
610calm
710calm
810calm
910calm
1010calm
1110calm
1210calm
1310calm
1410calm
1510calm
1610calm
1710calm
1810calm
1910calm
2010calm
2110calm
2210calm
2310calm
2410calm
2510calm
2610calm
2710calm
2810calm
299calm
309calm
319calm

Sunrise & sunset in October

DaylightNight

Daylight runs from about 11 h 48 min at the start of October to 11 h 12 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 36 minutes over October. Sunrise moves from 5:48 AM to 6:01 AM, and sunset from 5:36 PM to 5:12 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.85:485:36
211.85:485:35
311.85:485:34
411.75:495:33
511.75:495:32
611.75:505:31
711.75:505:30
811.65:505:29
911.65:515:28
1011.65:515:27
1111.65:515:26
1211.65:525:25
1311.55:525:24
1411.55:535:24
1511.55:535:23
1611.55:535:22
1711.55:545:21
1811.45:545:20
1911.45:555:20
2011.45:555:19
2111.45:565:18
2211.45:565:17
2311.35:575:17
2411.35:575:16
2511.35:585:15
2611.35:585:15
2711.35:595:14
2811.25:595:13
2911.26:005:13
3011.26:005:12
3111.26:015:12

Solar energy in October

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in October, about 4.4 kWh/m².

For context, solar energy here swings from a low near 3.87 kWh/m² to a high of 6.16 kWh/m² in April across the year — October's 4.4 kWh/m² falls in the middle.

012345151015202531
Solar energy (kWh/m²)Level
14.4Bright
24.4Bright
34.4Bright
44.4Bright
54.4Bright
64.4Bright
74.4Bright
84.4Bright
94.4Bright
104.4Bright
114.4Bright
124.4Bright
134.4Bright
144.4Bright
154.4Bright
164.4Bright
174.4Bright
184.4Bright
194.5Bright
204.5Bright
214.5Bright
224.5Bright
234.5Bright
244.5Bright
254.5Bright
264.5Bright
274.5Bright
284.4Bright
294.4Bright
304.4Bright
314.4Bright
Planning a trip in October

Hazard calendar for Chittagong

In seasonPeak

In October, Chittagong sits inside its cyclone season. The full year is below, with each hazard's peak months called out.

Chittagong sits in the North Indian Ocean cyclone zone; the season peaks May and October–November.

Chittagong's monsoon runs May–September, when most of the year's rain falls.

Cyclone
Monsoon
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Is October a good time to visit Chittagong?

Our two travel scores rate October for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).

4.8
Sightseeing
7th-best month of the year
6.1
Beach & pool
7th-best month of the year

October is a reasonable time to visit Chittagong for sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Chittagong in October

From October's temperature range, rain chance, sun and wind — what's worth putting in the bag.

In October, Chittagong sees daytime highs around 29°C and nights near 26°C. Pack light clothes and rain gear. About 17 days see rain.

light clothesrain gear

Sea temperature near Chittagong in October

The nearest coast averages about 29°C in October — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 22 km away) is warmest in October at about 29°C and coldest in January near 22°C.

The water stays above 20°C all year — warm enough for a swim any month.

20°25°30°JanFebMarAprMayJunJulAugSepOctNovDeccoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan22Refreshing
Feb23Refreshing
Mar26Warm
Apr28Tropical
May29Tropical
Jun29Tropical
Jul29Tropical
Aug29Tropical
Sep29Tropical
Oct29Tropical
Nov27Warm
Dec24Refreshing

UV index in Chittagong in October

LowModerateHighVery highExtreme

Clear-sky midday UV in October peaks around 6 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Chittagong peaks around July 21 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near January 10 at about 6 (high).

The index reaches 3 or more — the level where the WHO recommends sun protection — every month of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecHighVery highExtremeVery highHighJul 21UV 13Jan 10UV 6
UV index (midday)Level
Jan6High
Feb7High
Mar8Very high
Apr8Very high
May10Extreme
Jun8Very high
Jul13Extreme
Aug11Extreme
Sep9Very high
Oct6High
Nov7High
Dec6High

Air quality in Chittagong in October

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where October falls, not just the annual average.

Air quality in Chittagong is worst in January — around 117 µg/m³ PM2.5 (unhealthy), about 5.3× the cleanest month (July, 22 µg/m³).

Seasonal pattern from CAMS reanalysis, scaled to Chittagong's WHO annual average of 56.4 µg/m³.

0306090120JanFebMarAprMayJunJulAugSepOctNovDecUnhealthyPoorModeratePoorUnhealthyJan 16114 µg/m³Jul 1723 µg/m³
PM2.5 (µg/m³)Level
Jan117Unhealthy
Feb92Unhealthy
Mar79Unhealthy
Apr49Poor
May34Moderate
Jun27Moderate
Jul22Moderate
Aug26Moderate
Sep26Moderate
Oct43Poor
Nov67Unhealthy
Dec95Unhealthy
Location & terrain

Where is Chittagong?

Chittagong sits at 22.3°N, 91.8°E, 15 m above sea level, in Bangladesh. The nearest listed city is Cox's Bazar, 102 km away.

Cox's BazarBarisalButhidaung TownKyauktawDhakaBagerhatKhulna

Topography around Chittagong

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Chittagong.

Within 3 km, the terrain around Chittagong has only modest variations in elevation — a maximum elevation change of 60 m around an average of 12 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 96 m; within 80 km, large variations in elevation — a maximum elevation change of 893 m.

The land around Chittagong is covered by artificial surfaces (62%) and trees (22%) within 3 km, trees (43%) and water (27%) within 16 km, and trees (53%) and water (33%) within 80 km.

3 km
60 m
16 km
96 m
80 km
893 m
treesgrasslandcroplandartificial surfacesbare terrainwater
October weather nearby: Cox's Bazar 102 km · Barisal 156 km · Buthidaung Town 178 km · Hakha 186 km · Kyauktaw 204 km · Dhaka 211 km · Bagerhat 213 km · Khulna 239 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
Muslim 91%Hindu 8%other 1%

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 Chittagong (22.3384°, 91.8317°, elevation 15 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. Tropical-cyclone seasons are the published climatological basin seasons (NOAA National Hurricane Center / regional warning centres). Sea temperatures are the NOAA OISST v2.1 1991–2020 monthly climatology (public domain), sampled at the nearest ocean point. 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).