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Weather & Climate in Chattogram, Bangladesh
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Chattogram has a warm climate with an average annual temperature of 78°F (26°C). Winters average 67°F in January while summers reach 83°F in July / relatively mild seasonal variation. The area gets 322 sunny days per year, well above the U.S. average of 205 / making it one of the sunnier locations in the country. Annual precipitation totals 77.7 inches (wetter than the 38-inch national average). The city sits at an elevation of 49 feet.
Temperature
67°F Jan (20°C)
83°F Jul (28°C)
| Annual Average | 78.1°F |
| 45% above US avg | |
| January Average | 67°F (20°C) |
| July Average | 83°F (28°C) |
| Sunny Days | 322 days/yr |
Geography
| Elevation | 49 ft (15 m) |
| Area | 62.2 sq mi (161.0 km²) |
| Population Density | 63,067/sq mi |
| Coordinates | 22.3384°N, 91.8317°W |
| Timezone | Asia/Dhaka |
Precipitation & Snow
Air Quality
Earthquake History
66 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M6.1.
| Nov 21, 1997 | 42 km SW of Saiha, India | M6.1 | 91 km | 54 km |
| Jul 26, 2003 | 44 km SE of Khagrachhari, Bangladesh | M5.7 | 75 km | 10 km |
| Jul 27, 2003 | 41 km W of Lunglei, India | M5.5 | 75 km | 10 km |
| Nov 13, 2000 | 88 km S of Saiha, India | M5.5 | 132 km | 33 km |
| Sep 9, 2014 | 42 km SE of Saiha, India | M5.4 | 146 km | 10 km |
| Jul 22, 1999 | 16 km NW of Cox’s B?z?r, Bangladesh | M5.2 | 89 km | 10 km |
| Jan 31, 2008 | 36 km WSW of Lunglei, India | M4.9 | 77 km | 45 km |
| Dec 13, 2009 | 25 km WSW of S?tkania, Bangladesh | M4.9 | 38 km | 10 km |
| Jan 12, 2008 | 44 km WSW of Lunglei, India | M4.9 | 70 km | 34 km |
| Jul 28, 2007 | 42 km NE of Raoj?n, Bangladesh | M4.8 | 64 km | 37 km |
| Nov 22, 1997 | 40 km E of B?ndarban, Bangladesh | M4.8 | 83 km | 53 km |
| Feb 17, 2019 | 16 km WSW of Saiha, India | M4.8 | 105 km | 10 km |
| Nov 9, 2000 | 39 km NE of B?ndarban, Bangladesh | M4.7 | 67 km | 14 km |
| Jun 27, 2016 | 24 km NE of Raoj?n, Bangladesh | M4.7 | 48 km | 10 km |
| Aug 1, 2003 | 40 km W of Lunglei, India | M4.7 | 77 km | 10 km |
| Mar 11, 1994 | 38 km SSE of Saiha, India | M4.6 | 133 km | 34 km |
| Jan 1, 2012 | 18 km ESE of Amarpur, India | M4.6 | 126 km | 28 km |
| Dec 13, 2009 | 26 km WSW of S?tkania, Bangladesh | M4.6 | 38 km | 17 km |
| Jan 3, 2000 | 45 km SSW of Saiha, India | M4.6 | 99 km | 33 km |
| Jul 21, 2005 | 27 km SE of Khagrachhari, Bangladesh | M4.6 | 74 km | 10 km |
Source: USGS Earthquake Catalog (M2.5+, 1990-2025). Sorted by magnitude.
Hurricane History
16 hurricanes (Category 1+) recorded within 500 km since 1980. Strongest on record: Category 5.
| Year | Name | Category | Max Wind | Closest |
| 2023 | Mocha | Category 4 | 115 mph | 205 km |
| 2023 | Hamoon | Category 2 | 75 mph | 163 km |
| 2019 | Bulbul:matmo | Category 2 | 58 mph | 243 km |
| 2017 | Mora | Category 1 | 69 mph | 52 km |
| 2010 | Giri | Category 4 | 121 mph | 296 km |
| 2007 | Sidr | Category 4 | 132 mph | 148 km |
| 2007 | Akash | Category 1 | - | 130 km |
| 2004 | Unnamed | Category 1 | 104 mph | 267 km |
| 1998 | Unnamed | Category 1 | 69 mph | 38 km |
| 1997 | Unnamed | Category 4 | 104 mph | 29 km |
| 1997 | Unnamed | Category 1 | 63 mph | 68 km |
| 1995 | Unnamed | Category 2 | 89 mph | 114 km |
| 1994 | Unnamed | Category 4 | 132 mph | 106 km |
| 1992 | Forrest | Category 3 | 104 mph | 254 km |
| 1991 | Unnamed | Category 5 | 146 mph | 45 km |
| 1988 | Unnamed | Category 3 | 132 mph | 225 km |
Source: NOAA IBTrACS (Category 1+, 1980-2026).
Tsunami History
1 tsunami recorded within 500 km. Highest wave on record: 1.8 m (6 ft).
| Year | Location | Cause | Max Wave | Deaths | Distance |
| 1762 | NORTHERN BAY OF BENGAL | Earthquake | 1.8 m | - | 41 km |
Source: NOAA/NCEI Historical Tsunami Database.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 67°F (20°C) | 0.3 in | Coldest, Driest |
| February | 72°F (22°C) | 0.7 in | |
| March | 79°F (26°C) | 1.6 in | |
| April | 83°F (28°C) | 4.6 in | |
| May | 84°F (29°C) | 10.2 in | Warmest |
| June | 82°F (28°C) | 25.3 in | |
| July | 83°F (28°C) | 29.3 in | Wettest |
| August | 82°F (28°C) | 21.5 in | |
| September | 83°F (28°C) | 12.2 in | |
| October | 81°F (27°C) | 7.8 in | |
| November | 76°F (24°C) | 2.8 in | |
| December | 69°F (21°C) | 0.3 in |
Chattogram has a seasonal temperature swing of 16°F / from 67°F in January to 84°F in May. Total annual precipitation is 116.5 inches, with July being the wettest month (29.3") and January the driest (0.3").