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Sem

Province · Tønsberg, 🇳🇴 Norway
Population 21,948
Area 108 km²
Time zone Europe/Oslo
Sem

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Tønsberg nor Essentials

Tønsberg is Norway’s oldest town, established in the 9th century. This collection highlights the medieval ruins of Tunsberghus fortress and the Romanesque Sem kirke, which dates back to 1100. Modern landmarks include the award-winning library built over archaeological excavations and Edvard Munch’s summer cottage in Åsgårdstrand. The list also covers the region's natural landscape, from the coastal sands of Skallevoldstranda to the birdwatching vistas at the Ilene nature reserve.

10 places

Sem — Map

Sem — Map

Climate & when to visit

Best time to visit: July, August

Select a month

Typical weather in January

Poor
  • 0° (feels like -5°) · extremes -14°–7°
  • -4° at night
  • 13 rainy days
  • 0 sunny days
  • 1 hour of sunshine per day
  • Dry air
  • Light breeze
  • 4°C · too cold to swim
  • UV index 0 · low
  • 7 hours of daylight

Typical weather in February

Poor
  • 1° (feels like -4°) · extremes -13°–7°
  • -3° at night
  • 11 rainy days
  • 3 sunny days
  • 2 hours of sunshine per day
  • Dry air
  • Light breeze
  • 2°C · too cold to swim
  • UV index 0 · low
  • 9 hours of daylight

Typical weather in March

Poor
  • 5° (feels like 0°) · extremes -8°–11°
  • -1° at night
  • 9 rainy days
  • 9 sunny days
  • 5 hours of sunshine per day
  • Dry air
  • Calm winds
  • 3°C · too cold to swim
  • UV index 1 · low
  • 11 hours of daylight

Typical weather in April

Poor
  • 10° (feels like 6°) · extremes -2°–16°
  • 3° at night
  • 9 rainy days
  • 11 sunny days
  • 7 hours of sunshine per day
  • Dry air
  • Calm winds
  • 6°C · too cold to swim
  • UV index 2 · low
  • 14 hours of daylight

Typical weather in May

Good
  • 15° (feels like 12°) · extremes 2°–22°
  • 7° at night
  • 12 rainy days
  • 11 sunny days
  • 9 hours of sunshine per day
  • Dry air
  • Calm winds
  • 11°C · too cold to swim
  • UV index 4 · moderate
  • 17 hours of daylight

Typical weather in June

Good
  • 19° (feels like 16°) · extremes 8°–25°
  • 12° at night
  • 12 rainy days
  • 11 sunny days
  • 10 hours of sunshine per day
  • Dry air
  • Calm winds
  • 15°C · too cold to swim
  • UV index 5 · moderate
  • 18 hours of daylight

Typical weather in July

Great
  • 21° (feels like 19°) · extremes 11°–27°
  • 14° at night
  • 13 rainy days
  • 8 sunny days
  • 8 hours of sunshine per day
  • Dry air
  • Calm winds
  • 18°C · cool for a dip
  • UV index 5 · moderate
  • 18 hours of daylight

Typical weather in August

Great
  • 20° (feels like 18°) · extremes 11°–25°
  • 14° at night
  • 13 rainy days
  • 7 sunny days
  • 7 hours of sunshine per day
  • Dry air
  • Calm winds
  • 19°C · cool for a dip
  • UV index 4 · moderate
  • 15 hours of daylight

Typical weather in September

Good
  • 16° (feels like 14°) · extremes 7°–20°
  • 11° at night
  • 12 rainy days
  • 7 sunny days
  • 5 hours of sunshine per day
  • Dry air
  • Light breeze
  • 16°C · too cold to swim
  • UV index 2 · low
  • 13 hours of daylight

Typical weather in October

Poor
  • 10° (feels like 7°) · extremes 1°–15°
  • 6° at night
  • 14 rainy days
  • 5 sunny days
  • 3 hours of sunshine per day
  • Dry air
  • Light breeze
  • 12°C · too cold to swim
  • UV index 1 · low
  • 10 hours of daylight

Typical weather in November

Poor
  • 5° (feels like 1°) · extremes -4°–11°
  • 2° at night
  • 15 rainy days
  • 1 sunny day
  • 1 hour of sunshine per day
  • Dry air
  • Light breeze
  • 9°C · too cold to swim
  • UV index 0 · low
  • 7 hours of daylight

Typical weather in December

Poor
  • 2° (feels like -3°) · extremes -12°–8°
  • -2° at night
  • 14 rainy days
  • 0 sunny days
  • 1 hour of sunshine per day
  • Dry air
  • Light breeze
  • 5°C · too cold to swim
  • UV index 0 · low
  • 6 hours of daylight

Climate data: NASA POWER + Copernicus ERA5-Land and ERA5 · 1996–2025

Practical information

Currency
Norwegian Krone NOK kr · Card payments · Widely accepted
Electricity
Type C / Type F
230 V · 50 Hz
Languages
Norwegian Bokmål, Norwegian Nynorsk
Tap water
Safe to drink
Driving side
Right
Calling code
+47
Learn more

Tours & Activities

Tunsberghus
Walk
Slottsfjellsmuseet
Walk
Tønsberg domkirke

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Related destinations

Tønsberg