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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. The area gets 270 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 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) |
| Sunny Days | 270 days/yr |
Geography
| Elevation | 16 ft (5 m) |
| Area | 103.7 sq mi (268.7 km²) |
| Population Density | 154/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").