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Weather & Climate in Tjøme, Norway
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Tjøme has a cool climate with an average annual temperature of 45°F (7°C). Winters average 29°F in January while summers reach 63°F in July. The area gets 282 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 29.7 inches (drier than the 38-inch national average). The area receives 8.3 inches of snow annually. The city sits at an elevation of 75 feet.
Temperature
29°F Jan (-2°C)
63°F Jul (17°C)
| Annual Average | 45.0°F |
| 17% below US avg | |
| January Average | 29°F (-2°C) |
| July Average | 63°F (17°C) |
| Sunny Days | 282 days/yr |
Geography
| Elevation | 75 ft (23 m) |
| Area | 0.9 sq mi (2.4 km²) |
| Population Density | 5,299/sq mi |
| Coordinates | 59.1109°N, 10.3933°W |
| Timezone | Europe/Oslo |
Precipitation & Snow
Air Quality
Earthquake History
17 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M3.8.
| Feb 19, 1992 | 5 km SE of Fredrikstad, Norway | M3.8 | 36 km | 10 km |
| Nov 19, 1994 | 0 km WNW of Jessheim, Norway | M3.5 | 123 km | 10 km |
| Nov 12, 1993 | 2 km SE of Åmotfors, Sweden | M3.4 | 133 km | 10 km |
| Nov 29, 2000 | 9 km E of Strömstad, Sweden | M3.4 | 57 km | 10 km |
| May 10, 1994 | 24 km SW of Ellös, Sweden | M3.2 | 126 km | 35 km |
| Sep 28, 1993 | 44 km WSW of Grebbestad, Sweden | M2.9 | 59 km | 10 km |
| May 25, 2008 | 4 km WSW of Åneby, Norway | M2.9 | 110 km | 15 km |
| Apr 22, 1993 | 13 km W of Skärhamn, Sweden | M2.8 | 137 km | 10 km |
| Aug 15, 1991 | 7 km ESE of Stavern, Norway | M2.7 | 20 km | 10 km |
| Apr 26, 2005 | 24 km N of Hirtshals, Denmark | M2.7 | 147 km | 10 km |
| Nov 19, 1994 | 7 km NW of Jessheim, Norway | M2.7 | 125 km | 10 km |
| Nov 21, 1994 | 6 km NNW of Jessheim, Norway | M2.7 | 127 km | 10 km |
| Dec 12, 1994 | 8 km S of Rotnes, Norway | M2.6 | 100 km | 5 km |
| Aug 29, 1991 | 43 km W of Smögen, Sweden | M2.6 | 78 km | 10 km |
| Feb 1, 1991 | 5 km SSE of Melsomvik, Norway | M2.6 | 8 km | 10 km |
| Jan 29, 2005 | 7 km NNE of Hvittingfoss, Norway | M2.6 | 51 km | 15 km |
| May 23, 1990 | 50 km WNW of Smögen, Sweden | M2.5 | 63 km | 10 km |
Source: USGS Earthquake Catalog (M2.5+, 1990-2025). Sorted by magnitude.
Tsunami History
1 tsunami recorded within 500 km. Highest wave on record: 6.0 m (20 ft).
| Year | Location | Cause | Max Wave | Deaths | Distance |
| 1966 | EASTERN NORWAY | Meteorological | 6.0 m | - | 56 km |
Source: NOAA/NCEI Historical Tsunami Database.
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 29°F (-2°C) | 2.2 in | |
| February | 29°F (-2°C) | 1.5 in | Coldest, Driest |
| March | 35°F (1°C) | 2.1 in | |
| April | 42°F (5°C) | 1.5 in | |
| May | 52°F (11°C) | 1.8 in | |
| June | 59°F (15°C) | 2.1 in | |
| July | 63°F (17°C) | 2.4 in | Warmest |
| August | 61°F (16°C) | 2.8 in | |
| September | 54°F (12°C) | 3.4 in | |
| October | 46°F (8°C) | 3.9 in | Wettest |
| November | 38°F (3°C) | 3.6 in | |
| December | 32°F (-0°C) | 2.4 in |
Tjøme has a seasonal temperature swing of 34°F / from 29°F in February to 63°F in July. Total annual precipitation is 29.7 inches, with October being the wettest month (3.9") and February the driest (1.5").