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Weather & Climate in Nynäshamn, Sweden
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Nynäshamn has a cool climate with an average annual temperature of 43°F (6°C). Winters average 28°F in January while summers reach 62°F in July. The area gets 295 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 22.5 inches (drier than the 38-inch national average). The area receives 6.6 inches of snow annually. The city sits at an elevation of 69 feet.
Temperature
28°F Jan (-2°C)
62°F Jul (16°C)
| Annual Average | 43.4°F |
| 20% below US avg | |
| January Average | 28°F (-2°C) |
| July Average | 62°F (16°C) |
| Sunny Days | 295 days/yr |
Geography
| Elevation | 69 ft (21 m) |
| Area | 2.9 sq mi (7.6 km²) |
| Population Density | 4,977/sq mi |
| Coordinates | 58.9034°N, 17.9479°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 | 118 km | 10 km |
| Apr 5, 1995 | 9 km N of Åkersberga, Sweden | M2.7 | 77 km | 15 km |
| Mar 30, 1995 | 11 km SSW of Norrtälje, Sweden | M2.7 | 93 km | 10 km |
| Apr 3, 1995 | 14 km NE of Åkersberga, Sweden | M2.6 | 81 km | 10 km |
| Apr 5, 1995 | 6 km NNE of Åkersberga, Sweden | M2.5 | 74 km | 10 km |
| May 12, 2005 | 6 km E of Dalarö, Sweden | M2.5 | 42 km | 0 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 28°F (-2°C) | 1.7 in | |
| February | 28°F (-3°C) | 1.2 in | Coldest |
| March | 32°F (0°C) | 1.4 in | |
| April | 38°F (4°C) | 1.4 in | |
| May | 48°F (9°C) | 1.2 in | Driest |
| June | 57°F (14°C) | 1.9 in | |
| July | 62°F (16°C) | 2.3 in | Warmest |
| August | 61°F (16°C) | 2.2 in | |
| September | 53°F (12°C) | 2.3 in | |
| October | 45°F (7°C) | 2.2 in | |
| November | 37°F (3°C) | 2.5 in | Wettest |
| December | 32°F (-0°C) | 2.3 in |
Nynäshamn has a seasonal temperature swing of 34°F / from 28°F in February to 62°F in July. Total annual precipitation is 22.5 inches, with November being the wettest month (2.5") and May the driest (1.2").