Dated, weather-based
Tomorrow's forecast
For Monday, August 31, 2026, the 10 kWp city estimates average 33.0 kWh and span 25.9 kWh–36.3 kWh. That span is geographic variation between modelled cities, not an uncertainty interval or national forecast.
Iceland Solar Forecast
Across 4 modelled locations in Iceland, a standard 10 kWp south-facing system produces about 7,642 kWh in a typical year on average. Tomorrow's weather-based city forecasts range from 25.9 to 36.3 kWh for the same reference setup.
Forecast for Monday, August 31, 2026 · Updated Aug 30, 2026, 11:01 PM UTC · City samples, not a national production forecast
Forecast target: . Any “tomorrow” label on this page refers to this dated target.
Tomorrow in Iceland
One system. Different local weather.
Using the same installation in every location isolates the effect of weather and geography. Enter your own roof on any city page for a personal estimate.
- City average
- 33.0 kWh
- Lowest city estimate
- 25.9 kWh
- Highest city estimate
- 36.3 kWh
How to read and use the data
Iceland solar outlook: tomorrow's city forecasts versus PVGIS yield
This page compares 4 modelled locations on one reference system. It is a city comparison tool, not a measurement or forecast of national solar generation.
Multi-year climate baseline
PVGIS specific yield
The modelled cities average about 764 kWh/kWp in the PVGIS typical-year profile. Across the 10 kWp reference systems, typical annual output ranges from 7,096 to 8,189 kWh. May has the highest modelled average monthly output and December the lowest.
3, 5 and 10 kWp reference systems
Scale the same assumptions to your system size
SystemTomorrow city average (city spread)PVGIS typical year
3 kWpTomorrow city average (city spread)9.9 kWh7.8 kWh–10.9 kWhPVGIS typical year2,293 kWh/year
5 kWpTomorrow city average (city spread)16.5 kWh12.9 kWh–18.1 kWhPVGIS typical year3,821 kWh/year
10 kWpTomorrow city average (city spread)33.0 kWh25.9 kWh–36.3 kWhPVGIS typical year7,642 kWh/year
Linear reference scaling only: south-facing, 35° tilt and 14% system losses. It does not resize inverter clipping, shade or local roof constraints.
From forecast to a household plan
Battery, EV, heat pump and flexible loads
Choose the nearest representative city before scheduling equipment. A country average can frame the day, but a local forecast and the home's own demand determine usable surplus.
Battery
Use the nearest city, not the country mean
Open the closest city profile and preserve battery headroom around its strongest forecast window. The 25.9 kWh–36.3 kWh country spread shows why one national schedule would be unreliable.
EV
Size the charge against local energy
The 5 kWp country-average reference is 16.5 kWh before household use, but select a city because local estimates span 12.9 kWh–18.1 kWh.
Heat pump
Follow the local production window
Shift only discretionary water heating or pre-heating after checking the nearest city's strongest hours. Comfort, frost protection and hygiene controls take priority.
Large loads
Stagger flexible appliances
Country figures are daily energy, not simultaneous power. Use a city forecast and run flexible loads sequentially after allowing for base household consumption.
Local questions
Solar forecast FAQ
How much could a 5 kWp solar system produce tomorrow in Iceland?
Across the 4 modelled locations, the 5 kWp estimates average 16.5 kWh for Monday, August 31, 2026 and span 12.9 kWh–18.1 kWh between cities. The spread is geographic, not a national uncertainty range.
Which modelled Iceland location has the highest typical PV output?
Akureyri has the highest and Reykjavík the lowest typical annual output among the 4 locations in this dataset. The comparison uses the same 10 kWp reference system and PVGIS climate profile.
Is the Iceland city range a national solar forecast?
No. It is the minimum-to-maximum spread across 4 modelled city reference points. It does not aggregate installed solar systems, represent every local weather condition or provide a national generation total.
How should I use the Iceland forecast for a battery, EV or heat pump?
Select the nearest city and use its strongest forecast hours, then subtract household base load and respect battery, charger and heat-pump operating limits. Use the country page to compare locations, not to control equipment directly.
Representative locations
Solar forecasts for major cities in Iceland
Typical year
Monthly solar production across Iceland
The bars average the 4 city reference points. Typical annual output ranges from about 7,096 to 8,189 kWh for the 10 kWp setup. Of the locations modelled, Akureyri has the highest typical annual output and Reykjavík the lowest.
41Jan
217Feb
644Mar
1014Apr
1314May
1179Jun
1153Jul
981Aug
648Sep
360Oct
83Nov
8Dec
January41 kWh
February217 kWh
March644 kWh
April1,014 kWh
May1,314 kWh
June1,179 kWh
July1,153 kWh
August981 kWh
September648 kWh
October360 kWh
November83 kWh
December8 kWh
Typical monthly profiles use the European Commission JRC PVGIS multi-year climate series.
Local profiles
All 4 Iceland city forecasts
Use the data
Download the country snapshot or inspect the assumptions, sources and refresh rules. Static CSV and JSON files are CC BY 4.0 with source attribution.
Tomorrow, in one email
Get Akureyri's solar forecast by email
A practical daily solar brief for the reference location in Iceland: expected production, likely range and strongest hours.