Weather & Climate in Keflavík, Iceland
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Keflavík has a cool climate with an average annual temperature of 41°F (5°C). Winters average 33°F in January while summers reach 51°F in July / relatively mild seasonal variation. Annual precipitation totals 36.5 inches. The area receives 14.9 inches of snow annually. The city sits at an elevation of 16 feet.
Temperature
33°F Jan (0°C)
51°F Jul (11°C)
| Annual Average | 40.5°F |
| 25% below US avg | |
| January Average | 33°F (0°C) |
| July Average | 51°F (11°C) |
Geography
| Elevation | 16 ft (5 m) |
| Area | 103.7 sq mi (268.7 km²) |
| Population Density | 225/sq mi |
| Coordinates | 64.0049°N, 22.5624°W |
| Timezone | Atlantic/Reykjavik |
Precipitation & Snow
Air Quality
Earthquake History
170 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M6.5.
| Jun 21, 2000 | 12 km ENE of Selfoss, Iceland | M6.5 | 88 km | 10 km |
| Jun 17, 2000 | 25 km E of Selfoss, Iceland | M6.5 | 101 km | 10 km |
| May 29, 2008 | 8 km N of Selfoss, Iceland | M6.3 | 76 km | 9 km |
| Jun 17, 2000 | 18 km E of Selfoss, Iceland | M5.7 | 94 km | 10 km |
| Feb 24, 2021 | 6 km SE of Vogar, Iceland | M5.6 | 15 km | 10 km |
| Jun 4, 1998 | 5 km W of Hveragerði, Iceland | M5.4 | 62 km | 10 km |
| Jul 31, 2022 | 3 km SSE of Vogar, Iceland | M5.4 | 12 km | 10 km |
| Mar 7, 2021 | 11 km ENE of Vogar, Iceland | M5.3 | 19 km | 10 km |
| Mar 14, 2021 | 9 km SW of Álftanes, Iceland | M5.3 | 21 km | 10 km |
| Apr 1, 2025 | 6 km NW of Grindavík, Iceland | M5.2 | 13 km | 10 km |
| Jul 9, 2023 | 9 km SW of Álftanes, Iceland | M5.2 | 20 km | 5 km |
| Aug 23, 2003 | 9 km SE of Vogar, Iceland | M5.2 | 18 km | 10 km |
| Jan 30, 1991 | 47 km NNE of Hveragerði, Iceland | M5.2 | 95 km | 10 km |
| Feb 27, 2021 | 8 km SW of Álftanes, Iceland | M5.2 | 21 km | 10 km |
| Oct 30, 1990 | 114 km WSW of Grindavík, Iceland | M5.1 | 119 km | 5 km |
| Nov 13, 1998 | 10 km WNW of Þorlákshöfn, Iceland | M5.1 | 49 km | 10 km |
| Mar 10, 2021 | 9 km SW of Álftanes, Iceland | M5.1 | 20 km | 10 km |
| Oct 31, 1990 | 117 km SW of Grindavík, Iceland | M5.0 | 124 km | 5 km |
| Aug 2, 2022 | 1 km SSE of Hafnarfjörður, Iceland | M5.0 | 31 km | 10 km |
| Feb 27, 2007 | 95 km SW of Grindavík, Iceland | M5.0 | 104 km | 10 km |
Source: USGS Earthquake Catalog (M2.5+, 1990-2025). Sorted by magnitude.
Nearby Volcanoes
15 volcanoes within 200 km. Closest: Reykjanes (17 km).
| Name | Type | Elevation | Last Eruption | Distance |
| Reykjanes | Crater rows | 140 m (459 ft) | 1831 | 17 km |
| Krysuvik | Crater rows | 360 m (1,181 ft) | 1340 | 27 km |
| Brennisteinsfjoll | Crater rows | 610 m (2,001 ft) | 1341 | 39 km |
| Hengill | Crater rows | 803 m (2,635 ft) | 150 | 57 km |
| Hromundartindur | Stratovolcano | 550 m (1,804 ft) | Unknown | 61 km |
| Grimsnes | Crater rows | 200 m (656 ft) | -3500 | 82 km |
| Ljosufjoll | Fissure vent(s) | 1,063 m (3,488 ft) | 960 | 100 km |
| Helgrindur | Pyroclastic cone(s) | 986 m (3,235 ft) | Unknown | 102 km |
| Prestahnukur | Subglacial | 1,385 m (4,544 ft) | -3350 | 112 km |
| Vestmannaeyjar | Submarine | 283 m (928 ft) | 1973 | 131 km |
| Hekla | Stratovolcano | 1,490 m (4,888 ft) | 2000 | 141 km |
| Tindfjallajokull | Stratovolcano | 1,464 m (4,803 ft) | Unknown | 141 km |
| Eyjafjallajokull | Stratovolcano | 1,651 m (5,417 ft) | 2010 | 150 km |
| Langjokull | Subglacial | 1,100 m (3,609 ft) | 950 | 166 km |
| Torfajokull | Stratovolcano | 1,280 m (4,199 ft) | 1477 | 169 km |
Source: Smithsonian Institution Global Volcanism Program (GVP).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 33°F (0°C) | 3.5 in | Coldest |
| February | 33°F (1°C) | 3.9 in | Wettest |
| March | 33°F (1°C) | 3.7 in | |
| April | 37°F (3°C) | 2.3 in | |
| May | 43°F (6°C) | 2.2 in | |
| June | 48°F (9°C) | 2.0 in | Driest |
| July | 51°F (11°C) | 2.1 in | Warmest |
| August | 51°F (10°C) | 3.0 in | |
| September | 46°F (8°C) | 2.8 in | |
| October | 41°F (5°C) | 3.7 in | |
| November | 36°F (2°C) | 3.6 in | |
| December | 34°F (1°C) | 3.7 in |
Keflavík has a seasonal temperature swing of 18°F / from 33°F in January to 51°F in July. Total annual precipitation is 36.5 inches, with February being the wettest month (3.9") and June the driest (2.0").