Chittagong weather in January

In January, Chittagong sees average daytime highs of 23°C and overnight lows near 18°C, with 6 mm of rain across 0.8 wet days and about 10.8 hours of daylight. It is the 12th-warmest and 12th-wettest month of the year here.

Day-to-day highs hold fairly steady near 23°C through the month. The sky is clear or mostly clear about 87% of the time in January, and the air most often feels humid.

Daylight stretches from about 10 h 42 min at the start of January to 11 hours by month's end. Set against the rest of the year, January is Chittagong's 1st-clearest and 9th-windiest month. For the whole year in context, see Chittagong's year-round climate.

Daytime high
23°
12th warmest
Overnight low
18°
1st coldest
Rainfall
6 mm
0.8 wet days
Daylight
10 h 48 min
6:39 AM – 5:25 PM
Cloud cover
14%
1st clearest
Wind
11 km/h
9th windiest
Solar energy
4.75 kWh/m²
Travel score
9.3
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 January

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 23°C through the month.

A typical January day in Chittagong reaches about 23°C in the afternoon and slips back to 18°C overnight — a 6°C spread between the day's warmth and the night's chill. On most days the high lands between 22°C and 25°C. Set against its neighbours, January runs about 1°C cooler than December and about 2°C cooler than February.

15°20°25°30°151015202531
Avg high (°C)Avg low (°C)
12318
22318
32318
42318
52318
62318
72318
82318
92318
102318
112318
122318
132318
142317
152317
162317
172317
182317
192318
202318
212318
222318
232318
242318
252318
262318
272318
282318
292418
302418
312418

How January really feels in Chittagong

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.

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

January sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.

Chittagong 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.

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 January

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 87% of the time in January, the clearest month of the year.

Beyond those clear spells, partly cloudy skies cover about 5% of January, with mostly cloudy or overcast conditions the remaining 8%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
18911
28911
38911
48812
58812
68812
78911
89010
99010
10919
11919
12919
13937
14937
15937
16937
17937
18937
19946
20946
21946
22946
23946
24946
25946
26946
27946
28946
29937
30937
31928

Chance of precipitation in January

Any precipitation

Chittagong gets around 6 mm of rain over 0.8 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 3% and peaks near 3% on the wettest days.

0%10%20%30%151015202531
Rain chance (%)
13
23
33
43
53
63
73
83
92
102
112
122
132
142
152
162
172
182
192
202
213
223
233
243
253
263
273
283
293
303
313

Humidity in January

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, January lands in the humid band about 45% of days. Sticky, muggy-or-worse air turns up on roughly 6% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)
1437518
2537517
3538516
4539506
5640496
6640495
7640485
8741484
9741484
10741474
11841474
12841474
13841464
14941464
15941454
161041445
171041445
181141435
191141435
201241425
211240426
221240426
231240427
241339417
251339418
261338418
271237419
2812374110
2912364210
3011354211
3111344312

Wind in January

Winds average 11 km/h in January.

Across January, daily wind ranges from about 11 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
511calm
611calm
711calm
811calm
911calm
1011calm
1111calm
1211calm
1311calm
1411calm
1511calm
1611calm
1711calm
1811calm
1911calm
2011calm
2111calm
2211calm
2311calm
2411calm
2511calm
2611calm
2711calm
2811calm
2911calm
3011calm
3111calm

Sunrise & sunset in January

DaylightNight

Daylight runs from about 10 h 42 min at the start of January to 11 hours by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 18 minutes over January. Sunrise moves from 6:36 AM to 6:37 AM, and sunset from 5:15 PM to 5:35 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
110.76:365:15
210.76:375:16
310.76:375:17
410.76:375:17
510.76:375:18
610.76:385:19
710.76:385:19
810.76:385:20
910.76:385:20
1010.76:385:21
1110.76:385:22
1210.76:395:22
1310.76:395:23
1410.76:395:24
1510.86:395:24
1610.86:395:25
1710.86:395:26
1810.86:395:26
1910.86:395:27
2010.86:395:28
2110.86:395:28
2210.86:395:29
2310.96:395:30
2410.96:385:30
2510.96:385:31
2610.96:385:32
2710.96:385:32
2810.96:385:33
2910.96:375:34
3011.06:375:34
3111.06:375:35

Solar energy in January

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in January, about 4.75 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 — January's 4.75 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
14.5Bright
24.5Bright
34.5Bright
44.5Bright
54.5Bright
64.5Bright
74.6Bright
84.6Bright
94.6Bright
104.6Bright
114.6Bright
124.7Bright
134.7Bright
144.7Bright
154.7Bright
164.8Bright
174.8Bright
184.8Bright
194.8Bright
204.8Bright
214.9Bright
224.9Bright
234.9Bright
244.9Bright
255.0Bright
265.0Bright
275.0Bright
285.0Bright
295.0Bright
305.0Bright
315.1Bright
Planning a trip in January

Hazard calendar for Chittagong

In seasonPeak

None of Chittagong's seasonal hazards are active in January. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do peak.

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 January a good time to visit Chittagong?

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

9.3
Sightseeing
1st-best month of the year
7.3
Beach & pool
6th-best month of the year

January is one of the better times to visit Chittagong for general sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Chittagong in January

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

In January, Chittagong sees daytime highs around 23°C and nights near 18°C. Worth packing: light clothes and sun protection.

light clothessun protection

Sea temperature near Chittagong in January

The nearest coast averages about 22°C in January — 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 January

LowModerateHighVery highExtreme

Clear-sky midday UV in January 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 January

GoodModeratePoorUnhealthyVery unhealthy

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