14 day weather forecast

Tønsberg weather August 2026 — 14 day forecast · Norway

17°

cloudy · feels like 16°

Updated at
  • Live from Open-Meteo
  • Refreshed several times a day
  • 14 days ahead
  • No tracking · free
Warmest day
Saturday 5 Sept
20°C
highest maximum
Wettest day
Tuesday 8 Sept
40.2 mm
24% chance
Most sunshine
Wednesday 2 Sept
13.3 hours
of sunshine
Trend
14 days
Steady
Around 17° over the next 14 days

The next 14 days

swipe →
Avg max, 3 days
18.3°C
Coldest night
7°C
Most sunshine
13.3 h
Wind from
the west

Overview table · August 2026

Tønsberg 14 day forecast, day by day

The table below shows the full 14 day weather forecast for Tønsberg (Norway): the maximum and minimum temperature, rainfall in millimetres, the chance of rain, humidity, hours of sunshine and the UV index per day. Across the next two weeks the maximum temperature in Tønsberg averages around 17°C and the minimum around 11°C, with roughly 80 mm of rain in total, 10 dry days and about 124 hours of sunshine.

Last updated:

14 day weather forecast for Tønsberg (Norway) per day: temperature, rainfall, chance of rain, humidity, sunshine hours and UV index. Updated in August 2026.
DayWeatherMaxMinRainChanceHumiditySunUV
Saturday29 AugShowers18°C15°C10.9 mm100%94%1.7 h4moderate
Sunday30 AugLight rain18°C15°C0.9 mm49%93%0.1 h3moderate
Monday31 AugCloudy19°C15°C0 mm40%86%11 h4moderate
Tuesday1 SeptLight rain19°C14°C0.6 mm33%86%7.1 h4moderate
Wednesday2 SeptMostly sunny19°C11°C0 mm24%56%13.3 h4moderate
Thursday3 SeptMostly sunny18°C7°C0 mm36%61%13.2 h3moderate
Friday4 SeptLight rain17°C11°C0.6 mm22%66%13.1 h4moderate
Saturday5 SeptLight rain20°C11°C0.6 mm18%68%13.1 h3moderate
Sunday6 SeptLight rain19°C10°C0.6 mm31%56%13 h1low
Monday7 SeptCloudy18°C10°C0 mm31%53%12.5 h3moderate
Tuesday8 SeptThunder12°C9°C40.2 mm24%87%0 h3moderate
Wednesday9 SeptMostly sunny16°C8°C0 mm43%65%12.8 h3moderate
Thursday10 SeptShowers13°C9°C9 mm28%75%0.3 h4moderate
Friday11 SeptShowers18°C11°C16.2 mm24%79%12.6 h2low

The first three to five days of the forecast for Tønsberg are the most reliable; from day seven onwards it is an indicative trend. Click a day in the overview above for hourly detail. Source: Open-Meteo (Met Office, DWD, ECMWF).

Background & outlook

The weather in Tønsberg

Current conditions and the 14 day forecast

Tønsberg lies in Norway, an area with a cool maritime climate: mild for the latitude but wet and windy, with long summer days and short, dark winter ones. That is exactly why a two-week outlook is useful here — it shows the pattern rather than one snapshot.

What is the weather like in Tønsberg right now?

It is currently 17°C in Tønsberg with cloudy. It feels like 16°C, humidity is 94% and the wind is S 22 km/h.

Today (Saturday) reaches a maximum of 18°C and a minimum of 15°C, with 10.9 mm of rain and 1.7 hours of sunshine. Sunrise is at 06:08 and sunset at 20:29.

Tønsberg weather tomorrow

Tomorrow (Sunday) the maximum temperature in Tønsberg is 18°C and the minimum 15°C. Around 0.9 mm of rain is expected with 0.1 hours of sunshine, and the chance of rain is 49%. The data is refreshed several times a day through Open-Meteo.

Tønsberg weather this week and next week

Over the coming week the average maximum temperature in Tønsberg sits around 18°C and the average minimum around 13°C. Roughly 13 mm of rain is expected, spread across 1 day, with 2 largely sunny days.

The warmest day in the 14 day forecast for Tønsberg is Saturday 5 Sept at 20°C. The coldest night falls on Thursday 3 Sept at 7°C. Click any day for hourly detail.

Rain, sunshine and UV in Tønsberg

A daily rainfall total says little on its own: the same 5 mm can be one short downpour or a grey day of drizzle, which is why the hourly chart above is often the more useful of the two. Over the next fortnight the highest UV index for Tønsberg is 4, which is low to moderate.

How reliable is a 14 day forecast?

The first three to five days are generally very accurate. After that the certainty drops off and it is better read as a trend than as an exact daily prediction. Our data comes from Open-Meteo, which combines national weather models — among them the Met Office, DWD and ECMWF — and recomputes them several times a day using measurements from stations worldwide.

Forecast for Tønsberg last updated: 29 August 2026 at 14:25. See also all Norway forecasts and the European weather map.

Frequently asked questions

Questions about the weather in Tønsberg

What is the weather like in Tønsberg in August 2026?

The forecast at the top of this page shows the current temperature in Tønsberg plus the maximum and minimum for each of the next 14 days, with rainfall, chance of rain, sunshine hours and UV index. It is refreshed several times a day.

How accurate is the 14 day forecast for Tønsberg?

The first three to five days for Tønsberg are highly reliable. From day six onwards, read the forecast as a trend: it shows whether it turns warmer, cooler, wetter or drier rather than an exact value for that day.

Will it rain in Tønsberg this week?

The rainfall chart on this page gives the expected millimetres per day for Tønsberg, and each day card shows the chance of rain as a percentage. Below 20% with several hours of sunshine is a genuinely dry day.

How warm does it get in Tønsberg over the next two weeks?

The temperature chart shows the maximum and minimum for every one of the next 14 days in Tønsberg. The overview table underneath repeats the same figures day by day, together with the average across the fortnight.

Can I see the weather in Tønsberg hour by hour?

Yes. The hourly chart covers the next 48 hours in Tønsberg with temperature, feels-like temperature and chance of rain. Clicking any of the 14 days opens a panel with night, morning, afternoon and evening detail.

Where does the Tønsberg forecast come from?

The data for Tønsberg (Norway, Norway) comes from Open-Meteo, which combines national weather models such as those of the Met Office, DWD, Météo-France and ECMWF and recomputes them several times a day.

What does the UV index for Tønsberg mean?

The UV index runs from 0 to 11+. Up to 2 is low, 3 to 5 moderate, 6 to 7 high and 8 or more very high. From 6 upwards it is worth using sun protection in the middle of the day, even when it does not feel especially hot.

Is the Tønsberg weather forecast free?

Yes. The full 14 day forecast for Tønsberg is free, needs no account and carries no adverts inside the charts.