Chittagong weather in August

In August, Chittagong sees average daytime highs of 29°C and overnight lows near 27°C, with 454 mm of rain across 28.7 wet days and about 12.8 hours of daylight. It is the 6th-warmest and 3rd-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 1% of the time in August, and the air most often feels miserable.

Daylight stretches from about 13 hours at the start of August to 12 h 30 min by month's end. Set against the rest of the year, August is Chittagong's 11th-clearest and 3rd-windiest month. For the whole year in context, see Chittagong's year-round climate.

Daytime high
29°
6th warmest
Overnight low
27°
9th coldest
Rainfall
454 mm
28.7 wet days
Daylight
12 h 48 min
5:33 AM – 6:20 PM
Cloud cover
92%
11th clearest
Wind
20 km/h
3rd windiest
Solar energy
4.1 kWh/m²
Travel score
3.1
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 August

Average highAverage lowShaded bands: 10–90% of days

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

A typical August day in Chittagong reaches about 29°C in the afternoon and slips back to 27°C overnight — a 2°C spread between the day's warmth and the night's chill. On most days the high lands between 28°C and 30°C. Set against its neighbours, August runs on par with July and on par with September.

24°26°28°30°32°151015202531
Avg high (°C)Avg low (°C)
12927
22927
32927
42927
52927
62927
72927
82927
92927
102927
112927
122927
132927
142927
152927
162927
172927
182927
192927
202927
212927
222927
232927
242927
252927
262927
272927
282927
292927
302927
312927

How August really feels in Chittagong

Once humidity and wind are folded in, August 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 August is heat — humidity pushes the afternoon "feels like" well above the raw temperature.

Chittagong weather by month

How August compares with the rest of the year at a glance. August is the 6th-warmest and 3rd-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 August

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 1% of the time in August.

Beyond those clear spells, partly cloudy skies cover about 3% of August, with mostly cloudy or overcast conditions the remaining 96%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
1298
2298
3298
4298
5298
6199
7199
8199
9298
10298
11298
12298
13298
14298
15298
16298
17298
18496
19496
20496
21496
22595
23595
24595
25595
26694
27694
28694
29793
30892
31892

Chance of precipitation in August

Any precipitation

Chittagong gets around 454 mm of rain over 28.7 wet days in August. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 92% and peaks near 93% on the wettest days.

0%20%40%60%80%100%151015202531
Rain chance (%)
192
292
393
493
593
693
793
893
993
1093
1193
1293
1393
1493
1593
1693
1792
1892
1992
2092
2192
2292
2392
2492
2592
2692
2792
2892
2992
3091
3191

Humidity in August

DryComfortableHumidMuggyOppressiveMiserable

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

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

0%25%50%75%100%151015202531
Miserable (%)
1100
2100
3100
4100
5100
6100
7100
8100
9100
10100
11100
12100
13100
14100
15100
16100
17100
18100
19100
20100
21100
22100
23100
24100
25100
26100
27100
28100
29100
30100
31100

Wind in August

Winds average 20 km/h in August.

Across August, daily wind ranges from about 18 km/h on the calmest days to 21 km/h at its breeziest. It stays fairly steady from day to day.

0510152025151015202531
Wind speed (km/h)Feels
121breezy
221breezy
321breezy
421breezy
521breezy
621breezy
721breezy
821breezy
921breezy
1021breezy
1121breezy
1221breezy
1321breezy
1421breezy
1520breezy
1620breezy
1720breezy
1820breezy
1920light breeze
2020light breeze
2119light breeze
2219light breeze
2319light breeze
2419light breeze
2519light breeze
2619light breeze
2719light breeze
2818light breeze
2918light breeze
3018light breeze
3118light breeze

Sunrise & sunset in August

DaylightNight

Daylight runs from about 13 hours at the start of August to 12 h 30 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 30 minutes over August. Sunrise moves from 5:28 AM to 5:39 AM, and sunset from 6:30 PM to 6:07 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.05:286:30
213.05:286:29
313.05:286:29
413.05:296:28
513.05:296:28
613.05:306:27
712.95:306:26
812.95:306:26
912.95:316:25
1012.95:316:24
1112.95:326:24
1212.95:326:23
1312.85:326:22
1412.85:336:22
1512.85:336:21
1612.85:336:20
1712.85:346:19
1812.75:346:18
1912.75:356:18
2012.75:356:17
2112.75:356:16
2212.75:366:15
2312.65:366:14
2412.65:366:13
2512.65:376:12
2612.65:376:12
2712.65:376:11
2812.55:386:10
2912.55:386:09
3012.55:386:08
3112.55:396:07

Solar energy in August

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in August, about 4.1 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 — August's 4.1 kWh/m² sits near the bottom.

012345151015202531
Solar energy (kWh/m²)Level
14.1Bright
24.1Bright
34.1Bright
44.1Bright
54.1Bright
64.1Bright
74.0Bright
84.0Bright
94.0Bright
104.0Bright
114.0Bright
124.0Moderate
134.0Moderate
144.0Moderate
154.0Moderate
164.0Bright
174.0Bright
184.0Bright
194.0Bright
204.1Bright
214.1Bright
224.1Bright
234.1Bright
244.2Bright
254.2Bright
264.2Bright
274.2Bright
284.2Bright
294.2Bright
304.2Bright
314.2Bright
Planning a trip in August

Hazard calendar for Chittagong

In seasonPeak

In August, Chittagong sits inside its monsoon 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 August a good time to visit Chittagong?

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

3.1
Sightseeing
10th-best month of the year
3.8
Beach & pool
11th-best month of the year

August is a weaker month for outdoor sightseeing in Chittagong.

What to pack for Chittagong in August

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

In August, Chittagong sees daytime highs around 29°C and nights near 27°C. Pack light clothes and rain gear. About 29 days see rain.

light clothesrain gear

Sea temperature near Chittagong in August

The nearest coast averages about 29°C in August — 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 August

LowModerateHighVery highExtreme

Clear-sky midday UV in August peaks around 11 (very high — sun protection essential). 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 August

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where August 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
August 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).