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Weather & Climate in Grundarfjörður, Iceland
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Grundarfjörður has a cool climate with an average annual temperature of 37°F (3°C). Winters average 29°F in January while summers reach 48°F in July / relatively mild seasonal variation. The area gets 260 sunny days per year, above the national average. Annual precipitation totals 42.0 inches. The area receives 24.0 inches of snow annually, a moderate snowfall amount. The city sits at an elevation of 10 feet.
Temperature
29°F Jan (-2°C)
48°F Jul (9°C)
| Annual Average | 36.5°F |
| 32% below US avg | |
| January Average | 29°F (-2°C) |
| July Average | 48°F (9°C) |
| Sunny Days | 260 days/yr |
Geography
| Elevation | 10 ft (3 m) |
| Area | 98.1 sq mi (254.0 km²) |
| Population Density | 9/sq mi |
| Coordinates | 64.9243°N, 23.2631°W |
| Timezone | Atlantic/Reykjavik |
Precipitation & Snow
Air Quality
Earthquake History
134 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M6.3.
| May 29, 2008 | 8 km N of Selfoss, Iceland | M6.3 | 149 km | 9 km |
| Feb 24, 2021 | 6 km SE of Vogar, Iceland | M5.6 | 118 km | 10 km |
| Jul 31, 2022 | 3 km SSE of Vogar, Iceland | M5.4 | 116 km | 10 km |
| Jun 4, 1998 | 5 km W of Hveragerði, Iceland | M5.4 | 140 km | 10 km |
| Mar 7, 2021 | 11 km ENE of Vogar, Iceland | M5.3 | 113 km | 10 km |
| Mar 14, 2021 | 9 km SW of Álftanes, Iceland | M5.3 | 112 km | 10 km |
| Jul 9, 2023 | 9 km SW of Álftanes, Iceland | M5.2 | 111 km | 5 km |
| Jan 30, 1991 | 47 km NNE of Hveragerði, Iceland | M5.2 | 131 km | 10 km |
| Apr 1, 2025 | 6 km NW of Grindavík, Iceland | M5.2 | 121 km | 10 km |
| Feb 27, 2021 | 8 km SW of Álftanes, Iceland | M5.2 | 112 km | 10 km |
| Aug 23, 2003 | 9 km SE of Vogar, Iceland | M5.2 | 122 km | 10 km |
| Mar 10, 2021 | 9 km SW of Álftanes, Iceland | M5.1 | 112 km | 10 km |
| Nov 13, 1998 | 10 km WNW of Þorlákshöfn, Iceland | M5.1 | 141 km | 10 km |
| Aug 2, 2022 | 1 km SSE of Hafnarfjörður, Iceland | M5.0 | 116 km | 10 km |
| Jun 17, 2000 | 9 km ENE of Vogar, Iceland | M4.9 | 115 km | 10 km |
| May 24, 2025 | 23 km W of Grindavík, Iceland | M4.9 | 122 km | 10 km |
| Apr 1, 2025 | 9 km WNW of Grindavík, Iceland | M4.9 | 123 km | 4 km |
| Mar 1, 2021 | 5 km SW of Álftanes, Iceland | M4.9 | 110 km | 10 km |
| Aug 1, 2022 | 10 km SW of Hafnarfjörður, Iceland | M4.8 | 118 km | 10 km |
| Feb 24, 2021 | 10 km SSW of Álftanes, Iceland | M4.8 | 114 km | 10 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Nearby Volcanoes
10 volcanoes within 200 km. Closest: Helgrindur (7 km).
| Name | Type | Elevation | Last Eruption | Distance |
| Helgrindur | Pyroclastic cone(s) | 986 m (3,235 ft) | Unknown | 7 km |
| Ljosufjoll | Fissure vent(s) | 1,063 m (3,488 ft) | 960 | 37 km |
| Reykjanes | Crater rows | 140 m (459 ft) | 1831 | 124 km |
| Hengill | Crater rows | 803 m (2,635 ft) | 150 | 129 km |
| Krysuvik | Crater rows | 360 m (1,181 ft) | 1340 | 129 km |
| Prestahnukur | Subglacial | 1,385 m (4,544 ft) | -3350 | 129 km |
| Brennisteinsfjoll | Crater rows | 610 m (2,001 ft) | 1341 | 131 km |
| Hromundartindur | Stratovolcano | 550 m (1,804 ft) | Unknown | 132 km |
| Grimsnes | Crater rows | 200 m (656 ft) | -3500 | 150 km |
| Langjokull | Subglacial | 1,100 m (3,609 ft) | 950 | 168 km |
Source: Smithsonian Institution Global Volcanism Program (GVP).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 29°F (-2°C) | 4.1 in | Coldest |
| February | 29°F (-2°C) | 4.4 in | |
| March | 29°F (-2°C) | 4.4 in | |
| April | 33°F (0°C) | 3.0 in | |
| May | 39°F (4°C) | 2.6 in | |
| June | 44°F (7°C) | 2.2 in | |
| July | 48°F (9°C) | 2.1 in | Warmest, Driest |
| August | 47°F (9°C) | 3.1 in | |
| September | 42°F (6°C) | 3.4 in | |
| October | 36°F (2°C) | 4.6 in | Wettest |
| November | 32°F (0°C) | 4.1 in | |
| December | 30°F (-1°C) | 4.1 in |
Grundarfjörður has a seasonal temperature swing of 20°F / from 29°F in January to 48°F in July. Total annual precipitation is 42.0 inches, with October being the wettest month (4.6") and July the driest (2.1").