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Weather & Climate in Rosera, India
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Rosera has a warm climate with an average annual temperature of 77°F (25°C). Winters average 61°F in January while summers reach 84°F in July. The area gets 259 sunny days per year, above the national average. Annual precipitation totals 42.5 inches. The city sits at an elevation of 171 feet.
Temperature
61°F Jan (16°C)
84°F Jul (29°C)
| Annual Average | 77.2°F |
| 43% above US avg | |
| January Average | 61°F (16°C) |
| July Average | 84°F (29°C) |
| Sunny Days | 259 days/yr |
Geography
| Elevation | 171 ft (52 m) |
| Area | 49.3 sq mi (127.6 km²) |
| Population Density | 633/sq mi |
| Coordinates | 25.7549°N, 86.0316°W |
| Timezone | Asia/Kolkata |
Precipitation & Snow
Air Quality
Earthquake History
6 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 | 145 km | 30 km |
| Jan 10, 1990 | 8 km WNW of R?jbir?j, Nepal | M4.7 | 109 km | 69 km |
| Jul 9, 1993 | 15 km NE of Janakpur, Nepal | M4.6 | 117 km | 33 km |
| Apr 26, 2015 | 34 km N of Janakpur, Nepal | M4.3 | 142 km | 10 km |
| Apr 12, 2023 | Nepal-India border region | M4.0 | 138 km | 10 km |
| May 27, 2005 | 18 km SSW of Forbesganj, India | M3.5 | 126 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 | 135 km |
Source: NOAA/NCEI Historical Tsunami Database.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 61°F (16°C) | 0.7 in | Coldest |
| February | 66°F (19°C) | 0.2 in | |
| March | 75°F (24°C) | 0.5 in | |
| April | 84°F (29°C) | 0.5 in | |
| May | 87°F (31°C) | 1.3 in | Warmest |
| June | 87°F (30°C) | 7.0 in | |
| July | 84°F (29°C) | 10.9 in | Wettest |
| August | 84°F (29°C) | 10.7 in | |
| September | 83°F (28°C) | 7.8 in | |
| October | 80°F (27°C) | 2.7 in | |
| November | 71°F (22°C) | 0.2 in | |
| December | 64°F (18°C) | 0.0 in | Driest |
Rosera has a seasonal temperature swing of 26°F / from 61°F in January to 87°F in May. Total annual precipitation is 42.5 inches, with July being the wettest month (10.9") and December the driest (0.0").