14 day weather forecast

Trondheim weather October 2026 — 14 day forecast · Norway

5°

mainly clear · feels like 3°

Updated at 23:45
  • Live from Open-Meteo
  • Refreshed several times a day
  • 14 days ahead
  • No tracking · free
Warmest day
Thursday 15 Oct
13°C
highest maximum
Wettest day
Friday 16 Oct
13.5 mm
53% chance
Most sunshine
Monday 12 Oct
9.7 hours
of sunshine
Trend
14 days
Unsettled
10 days with rain

The next 14 days

swipe →
Avg max, 3 days
9.7°C
Coldest night
2°C
Most sunshine
9.7 h
Wind from
the west

Overview table · October 2026

Trondheim 14 day forecast, day by day

The table below shows the full 14 day weather forecast for Trondheim (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 Trondheim averages around 10°C and the minimum around 7°C, with roughly 57 mm of rain in total, 4 dry days and about 54 hours of sunshine.

14 day weather forecast for Trondheim (Norway) per day: temperature, rainfall, chance of rain, humidity, sunshine hours and UV index. Updated in October 2026.
DayWeatherMaxMinRainChanceHumiditySunUV
SundayCloudy8°C6°C0 mm24%65%3.8 h1low
MondayMostly sunny11°C2°C0 mm5%72%9.7 h2low
TuesdayShowers10°C3°C10.4 mm87%78%0 h1low
WednesdayShowers12°C8°C5.5 mm83%72%7.7 h2low
ThursdayLight rain13°C9°C1.6 mm29%67%8.1 h1low
FridayShowers10°C7°C13.5 mm53%93%3.2 h1low
SaturdayLight rain7°C5°C3.3 mm49%77%8.2 h1low
SundayLight rain10°C7°C3.6 mm41%71%0 h1low
MondayLight rain11°C8°C4.2 mm48%80%3.6 h1low
TuesdayLight rain11°C9°C0.3 mm41%73%0 h0low
WednesdayLight rain10°C9°C2.1 mm49%88%0 h1low
ThursdayLight rain9°C7°C0.3 mm45%86%5.7 h1low
FridayLight rain10°C8°C2.4 mm38%83%4 h0low
SaturdayLight rain9°C8°C9.9 mm38%90%0 h1low

The first three to five days of the forecast for Trondheim 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 Trondheim

Current conditions and the 14 day forecast

Trondheim 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 Trondheim right now?

It is currently 5°C in Trondheim with mainly clear. It feels like 3°C, humidity is 74% and the wind is SSW 5 km/h.

Today (Sunday) reaches a maximum of 8°C and a minimum of 6°C, with 0 mm of rain and 3.8 hours of sunshine. Sunrise is at 07:54 and sunset at 18:14.

Trondheim weather tomorrow

Tomorrow (Monday) the maximum temperature in Trondheim is 11°C and the minimum 2°C. Around 0 mm of rain is expected with 9.7 hours of sunshine, and the chance of rain is 5%. The data is refreshed several times a day through Open-Meteo.

Trondheim weather this week and next week

Over the coming week the average maximum temperature in Trondheim sits around 10°C and the average minimum around 6°C. Roughly 34.3 mm of rain is expected, spread across 5 days, with 1 largely sunny day.

The warmest day in the 14 day forecast for Trondheim is Thursday 15 Oct at 13°C. The coldest night falls on Monday 12 Oct at 2°C. Click any day for hourly detail.

Rain, sunshine and UV in Trondheim

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 Trondheim is 2, 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 Trondheim last updated: 11 October 2026 at 23:45. See also all Norway forecasts and the European weather map.

Frequently asked questions

Questions about the weather in Trondheim

What is the weather like in Trondheim in October 2026?

The forecast at the top of this page shows the current temperature in Trondheim 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 Trondheim?

The first three to five days for Trondheim 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 Trondheim this week?

The rainfall chart on this page gives the expected millimetres per day for Trondheim, 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 Trondheim over the next two weeks?

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

Can I see the weather in Trondheim hour by hour?

Yes. The hourly chart covers the next 48 hours in Trondheim 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 Trondheim forecast come from?

The data for Trondheim (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 Trondheim 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 Trondheim weather forecast free?

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