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Weather & Climate in Bollmora, Sweden
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Bollmora has a cool climate with an average annual temperature of 44°F (7°C). Winters average 30°F in January while summers reach 62°F in July. The area gets 256 sunny days per year, above the national average. Annual precipitation totals 26.1 inches (drier than the 38-inch national average). The area receives 22.1 inches of snow annually, a moderate snowfall amount. The city sits at an elevation of 135 feet.
Temperature
30°F Jan (-1°C)
62°F Jul (17°C)
| Annual Average | 43.9°F |
| 19% below US avg | |
| January Average | 30°F (-1°C) |
| July Average | 62°F (17°C) |
| Sunny Days | 256 days/yr |
Geography
| Elevation | 135 ft (41 m) |
| Area | 1.3 sq mi (3.3 km²) |
| Population Density | 0/sq mi |
| Coordinates | 59.2420°N, 18.2276°W |
| Timezone | Europe/Stockholm |
Precipitation & Snow
Air Quality
Earthquake History
6 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M3.9.
| Dec 12, 1990 | 11 km NW of Irsta, Sweden | M3.9 | 100 km | 10 km |
| Apr 5, 1995 | 9 km N of Åkersberga, Sweden | M2.7 | 37 km | 15 km |
| Mar 30, 1995 | 11 km SSW of Norrtälje, Sweden | M2.7 | 52 km | 10 km |
| Apr 3, 1995 | 14 km NE of Åkersberga, Sweden | M2.6 | 40 km | 10 km |
| Apr 5, 1995 | 6 km NNE of Åkersberga, Sweden | M2.5 | 34 km | 10 km |
| May 12, 2005 | 6 km E of Dalarö, Sweden | M2.5 | 20 km | 0 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 30°F (-1°C) | 1.7 in | |
| February | 27°F (-3°C) | 1.1 in | Coldest, Driest |
| March | 32°F (0°C) | 1.3 in | |
| April | 39°F (4°C) | 1.5 in | |
| May | 49°F (10°C) | 1.2 in | |
| June | 58°F (14°C) | 2.2 in | |
| July | 62°F (17°C) | 2.7 in | Warmest, Wettest |
| August | 61°F (16°C) | 2.4 in | |
| September | 52°F (11°C) | 2.3 in | |
| October | 45°F (7°C) | 2.1 in | |
| November | 37°F (3°C) | 2.5 in | |
| December | 31°F (-1°C) | 2.1 in |
Bollmora has a seasonal temperature swing of 35°F / from 27°F in February to 62°F in July. Total annual precipitation is 23.1 inches, with July being the wettest month (2.7") and February the driest (1.1").