Norway · 10 kWp reference system

Tromsø solar forecast

Name: Tromsø solar production forecast and typical monthly profile
Creator: GridPassport

Photo: The Municipality of Tromsø from Tromsø, Norway, CC BY 2.0. Cropped, resized and converted to WebP by GridPassport.

Wednesday, August 5, 2026

About 39.1 kWh tomorrow

For a standard 10 kWp south-facing system in Tromsø, GridPassport estimates 39.1 kWh on Wednesday, August 5, 2026, with a likely range of 27.3-49.6 kWh. The strongest production window is expected at 15:00-19:00 local time.

Updated Aug 4, 2026, 08:53 PM GMT+2 · fresh snapshot

Likely range: 27.3-49.6 kWh
Strongest window: 15:00-19:00
Confidence: medium

Forecast my solar output

Typical year

Solar production month by month in Tromsø

A standard 10 kWp system produces about 7,188 kWh in a typical year at this location. Monthly averages show seasonality; they are not a forecast for a specific year.

1 Jan

148 Feb

695 Mar

1160 Apr

1319 May

1101 Jun

1064 Jul

882 Aug

576 Sep

232 Oct

10 Nov

0 Dec

Values are kWh per month. Source: European Commission JRC PVGIS.

What makes Tromsø's solar profile different? The typical annual yield is about 719 kWh per installed kWp, ranking Tromsø #7 of 7 modelled locations in Norway. That is 13% below the median of the 7 Norway locations in this dataset. May is typically the strongest month and December the weakest; the stronger month produces about undefined times as much.

See the 12-month data

MonthMonthly outputDaily averageYear-to-year variation

MonthJanuary Monthly output1 kWh Daily average0.0 kWh/day Year-to-year variation±0 kWh

MonthFebruary Monthly output148 kWh Daily average5.3 kWh/day Year-to-year variation±45 kWh

MonthMarch Monthly output695 kWh Daily average22.4 kWh/day Year-to-year variation±111 kWh

MonthApril Monthly output1,160 kWh Daily average38.7 kWh/day Year-to-year variation±147 kWh

MonthMay Monthly output1,319 kWh Daily average42.6 kWh/day Year-to-year variation±139 kWh

MonthJune Monthly output1,101 kWh Daily average36.7 kWh/day Year-to-year variation±177 kWh

MonthJuly Monthly output1,064 kWh Daily average34.3 kWh/day Year-to-year variation±141 kWh

MonthAugust Monthly output882 kWh Daily average28.5 kWh/day Year-to-year variation±105 kWh

MonthSeptember Monthly output576 kWh Daily average19.2 kWh/day Year-to-year variation±114 kWh

MonthOctober Monthly output232 kWh Daily average7.5 kWh/day Year-to-year variation±59 kWh

MonthNovember Monthly output10 kWh Daily average0.3 kWh/day Year-to-year variation±5 kWh

MonthDecember Monthly output0 kWh Daily average0.0 kWh/day Year-to-year variation±0 kWh

Nearby solar forecasts

Compare Tromsø with nearby cities

BodøNorway 62.6 kWh

RovaniemiFinland 57.9 kWh

OuluFinland 44.6 kWh

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Method and data

Every city uses a 10 kWp system facing south at 35 degrees with 14% system losses. Tomorrow's figure combines hourly weather with GridPassport's PV production and uncertainty model. The monthly profile uses the European Commission JRC PVGIS multi-year climate series. Roof direction, shade, snow, dirt, inverter clipping and local weather can change real output.

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