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Weather & Climate in Purnia, India
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Purnia 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 239 sunny days per year, above the national average. Annual precipitation totals 54.7 inches (wetter than the 38-inch national average). The city sits at an elevation of 144 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 | 239 days/yr |
Geography
| Elevation | 144 ft (44 m) |
| Area | 286.8 sq mi (742.8 km²) |
| Population Density | 984/sq mi |
| Coordinates | 25.7790°N, 87.4742°W |
| Timezone | Asia/Kolkata |
Precipitation & Snow
Air Quality
Earthquake History
12 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M5.1.
| Apr 27, 2015 | 13 km ESE of Il?m, Nepal | M5.1 | 134 km | 32 km |
| Feb 15, 1993 | 6 km W of Kasba, India | M5.0 | 8 km | 30 km |
| Mar 27, 2012 | 17 km W of Kishanganj, India | M5.0 | 46 km | 29 km |
| Jan 10, 1990 | 8 km WNW of R?jbir?j, Nepal | M4.7 | 119 km | 69 km |
| Feb 12, 1998 | 10 km ESE of Bhadrapur, Nepal | M4.6 | 109 km | 33 km |
| Jun 20, 2002 | 8 km NNE of Saidpur, Bangladesh | M4.5 | 146 km | 40 km |
| Jun 20, 2018 | 17 km E of Dhankut?, Nepal | M4.4 | 132 km | 38 km |
| Feb 28, 1998 | 23 km E of Dhankut?, Nepal | M4.4 | 139 km | 33 km |
| Sep 27, 2001 | 31 km E of Dhar?n, Nepal | M4.3 | 116 km | 33 km |
| Apr 12, 2023 | Nepal-India border region | M4.0 | 26 km | 10 km |
| Jul 8, 2003 | 22 km ESE of Dhankut?, Nepal | M3.9 | 125 km | 33 km |
| May 27, 2005 | 18 km SSW of Forbesganj, India | M3.5 | 48 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 | 132 km |
Source: NOAA/NCEI Historical Tsunami Database.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 62°F (17°C) | 0.6 in | Coldest |
| February | 67°F (19°C) | 0.3 in | |
| March | 76°F (25°C) | 0.5 in | |
| April | 83°F (29°C) | 1.1 in | |
| May | 86°F (30°C) | 3.2 in | Warmest |
| June | 85°F (30°C) | 9.0 in | |
| July | 84°F (29°C) | 14.0 in | Wettest |
| August | 84°F (29°C) | 12.4 in | |
| September | 84°F (29°C) | 9.7 in | |
| October | 81°F (27°C) | 3.6 in | |
| November | 72°F (22°C) | 0.4 in | |
| December | 65°F (18°C) | 0.0 in | Driest |
Purnia has a seasonal temperature swing of 24°F / from 62°F in January to 86°F in May. Total annual precipitation is 54.7 inches, with July being the wettest month (14.0") and December the driest (0.0").