All Countries
Weather & Climate in Siglufjörður, Iceland
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Siglufjörður has a cool climate with an average annual temperature of 34°F (1°C). Winters average 26°F in January while summers reach 47°F in July. The area gets 290 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 25.4 inches (drier than the 38-inch national average). The area receives 15.6 inches of snow annually, a moderate snowfall amount.
Temperature
26°F Jan (-3°C)
47°F Jul (8°C)
| Annual Average | 33.7°F |
| 38% below US avg | |
| January Average | 26°F (-3°C) |
| July Average | 47°F (8°C) |
| Sunny Days | 290 days/yr |
Geography
| Area | 59.9 sq mi (155.0 km²) |
| Population Density | 20/sq mi |
| Coordinates | 66.1520°N, 18.9082°W |
| Timezone | Atlantic/Reykjavik |
Precipitation & Snow
Air Quality
Earthquake History
67 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M6.0.
| Jun 21, 2020 | 27 km NNE of Siglufjörður, Iceland | M6.0 | 27 km | 10 km |
| Sep 16, 2002 | 89 km NNE of Siglufjörður, Iceland | M5.8 | 90 km | 10 km |
| Jun 20, 2020 | 15 km N of Siglufjörður, Iceland | M5.7 | 15 km | 10 km |
| Feb 8, 1994 | 42 km NNW of Siglufjörður, Iceland | M5.5 | 42 km | 10 km |
| Oct 21, 2012 | 20 km NNE of Siglufjörður, Iceland | M5.5 | 21 km | 10 km |
| Jun 20, 2020 | 15 km NE of Siglufjörður, Iceland | M5.4 | 15 km | 10 km |
| Oct 21, 2012 | 28 km NNE of Siglufjörður, Iceland | M5.3 | 29 km | 10 km |
| Apr 2, 2013 | 44 km NNW of Norðurþing, Iceland | M5.3 | 66 km | 10 km |
| Sep 8, 2022 | 56 km NNW of Norðurþing, Iceland | M5.2 | 62 km | 10 km |
| Feb 19, 2018 | 53 km NNW of Norðurþing, Iceland | M4.9 | 67 km | 10 km |
| Feb 19, 2018 | 45 km NNW of Norðurþing, Iceland | M4.8 | 60 km | 10 km |
| Sep 20, 2012 | 7 km NW of Siglufjörður, Iceland | M4.8 | 8 km | 10 km |
| Jul 22, 1997 | 27 km NE of Siglufjörður, Iceland | M4.7 | 27 km | 10 km |
| May 13, 2025 | 52 km N of Norðurþing, Iceland | M4.7 | 79 km | 10 km |
| Apr 2, 2013 | 52 km N of Norðurþing, Iceland | M4.7 | 75 km | 10 km |
| Sep 20, 1997 | 26 km ENE of Siglufjörður, Iceland | M4.6 | 26 km | 10 km |
| May 14, 2025 | 52 km NNW of Norðurþing, Iceland | M4.6 | 63 km | 10 km |
| Sep 8, 2022 | 58 km NNW of Nor?ur?ing, Iceland | M4.6 | 67 km | 10 km |
| Sep 8, 2022 | 57 km NNW of Norðurþing, Iceland | M4.6 | 67 km | 10 km |
| Sep 20, 1997 | 19 km ENE of Siglufjörður, Iceland | M4.5 | 20 km | 10 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Nearby Volcanoes
11 volcanoes within 200 km. Closest: Tjornes Fracture Zone (82 km).
| Name | Type | Elevation | Last Eruption | Distance |
| Tjornes Fracture Zone | Submarine | -75 m (-246 ft) | 1868 | 82 km |
| Theistareykir | Shield | 540 m (1,772 ft) | -900 | 86 km |
| Krafla | Caldera | 800 m (2,625 ft) | 1984 | 110 km |
| Fremrinamar | Stratovolcano | 970 m (3,182 ft) | -1200 | 131 km |
| Hofsjokull | Subglacial | 1,765 m (5,791 ft) | Unknown | 147 km |
| Langjokull | Subglacial | 1,100 m (3,609 ft) | 950 | 149 km |
| Askja | Stratovolcano | 1,080 m (3,543 ft) | 1961 | 158 km |
| Tungnafellsjokull | Stratovolcano | 1,523 m (4,997 ft) | Unknown | 163 km |
| Bardarbunga | Stratovolcano | 2,000 m (6,562 ft) | 2015 | 181 km |
| Prestahnukur | Subglacial | 1,385 m (4,544 ft) | -3350 | 193 km |
| Kverkfjoll | Stratovolcano | 1,930 m (6,332 ft) | 1968 | 197 km |
Source: Smithsonian Institution Global Volcanism Program (GVP).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 26°F (-3°C) | 2.2 in | |
| February | 25°F (-4°C) | 2.1 in | Coldest |
| March | 25°F (-4°C) | 2.3 in | |
| April | 29°F (-2°C) | 1.6 in | |
| May | 36°F (2°C) | 1.5 in | Driest |
| June | 43°F (6°C) | 1.9 in | |
| July | 47°F (8°C) | 1.9 in | Warmest |
| August | 46°F (8°C) | 2.1 in | |
| September | 40°F (4°C) | 2.5 in | |
| October | 33°F (0°C) | 3.0 in | Wettest |
| November | 28°F (-2°C) | 2.2 in | |
| December | 26°F (-3°C) | 2.2 in |
Siglufjörður has a seasonal temperature swing of 22°F / from 25°F in February to 47°F in July. Total annual precipitation is 25.4 inches, with October being the wettest month (3.0") and May the driest (1.5").