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Weather & Climate in Bihārīganj, India
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Bihārīganj has a warm climate with an average annual temperature of 77°F (25°C). Winters average 62°F in January while summers reach 84°F in July. The area gets 250 sunny days per year, above the national average. Annual precipitation totals 47.1 inches (wetter than the 38-inch national average). The city sits at an elevation of 151 feet.
Temperature
62°F Jan (17°C)
84°F Jul (29°C)
| Annual Average | 77.3°F |
| 43% above US avg | |
| January Average | 62°F (17°C) |
| July Average | 84°F (29°C) |
| Sunny Days | 250 days/yr |
Geography
| Elevation | 151 ft (46 m) |
| Area | 51.8 sq mi (134.2 km²) |
| Population Density | 633/sq mi |
| Coordinates | 25.7342°N, 86.9884°W |
| Timezone | Asia/Kolkata |
Precipitation & Snow
Air Quality
Earthquake History
10 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M5.0.
| Feb 15, 1993 | 6 km W of Kasba, India | M5.0 | 50 km | 30 km |
| Mar 27, 2012 | 17 km W of Kishanganj, India | M5.0 | 88 km | 29 km |
| Jan 10, 1990 | 8 km WNW of R?jbir?j, Nepal | M4.7 | 97 km | 69 km |
| Feb 12, 1998 | 10 km ESE of Bhadrapur, Nepal | M4.6 | 149 km | 33 km |
| Jun 20, 2018 | 17 km E of Dhankut?, Nepal | M4.4 | 146 km | 38 km |
| Sep 27, 2001 | 31 km E of Dhar?n, Nepal | M4.3 | 135 km | 33 km |
| Aug 22, 2025 | 29 km N of Triyuga, Nepal | M4.1 | 149 km | 10 km |
| Apr 12, 2023 | Nepal-India border region | M4.0 | 49 km | 10 km |
| Jul 8, 2003 | 22 km ESE of Dhankut?, Nepal | M3.9 | 142 km | 33 km |
| May 27, 2005 | 18 km SSW of Forbesganj, India | M3.5 | 51 km | 58 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Tsunami History
1 tsunami recorded within 500 km.
| Year | Location | Cause | Max Wave | Deaths | Distance |
| 1934 | BIHAR-NEPAL, GANGES RIVER | Earthquake | — | 10,600 | 118 km |
Source: NOAA/NCEI Historical Tsunami Database.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 62°F (17°C) | 0.5 in | Coldest |
| February | 67°F (19°C) | 0.2 in | |
| March | 76°F (24°C) | 0.5 in | |
| April | 84°F (29°C) | 1.0 in | |
| May | 86°F (30°C) | 2.0 in | Warmest |
| June | 86°F (30°C) | 7.0 in | |
| July | 84°F (29°C) | 12.1 in | Wettest |
| August | 84°F (29°C) | 11.7 in | |
| September | 83°F (29°C) | 8.4 in | |
| October | 80°F (27°C) | 3.4 in | |
| November | 71°F (22°C) | 0.3 in | |
| December | 64°F (18°C) | 0.0 in | Driest |
Bihārīganj has a seasonal temperature swing of 25°F / from 62°F in January to 86°F in May. Total annual precipitation is 47.1 inches, with July being the wettest month (12.1") and December the driest (0.0").