Dated, weather-based
Tomorrow's forecast
Tomorrow's value is a weather-based estimate for Tuesday, September 1, 2026: 52.4 kWh from the 10 kWp reference system, with a likely range of 46.1 kWh–53.6 kWh. It changes with the next weather forecast.
Greece · 10 kWp reference system
Athens solar forecast and PV yield
Photo: Andrew Parlette,CC BY 4.0. Cropped, resized and converted to WebP by GridPassport.
Forecast target: . Any “tomorrow” label on this page refers to this dated target.
- Tomorrow's forecast
- 52.4 kWh 10 kWp reference system
- Typical annual output
- 15,737 kWh 10 kWp reference system
- Typical specific yield
- 1,574 kWh/kWp Per year
Tuesday, September 1, 2026
About 52.4 kWh tomorrow
For a standard 10 kWp south-facing system in Athens, GridPassport estimates 52.4 kWh on Tuesday, September 1, 2026, with a likely range of 46.1-53.6 kWh. The strongest production window is expected at 12:00-16:00 local time.
Updated Aug 31, 2026, 02:01 AM GMT+3 · fresh snapshot- Likely range
- 46.1-53.6 kWh
- Strongest window
- 12:00-16:00
- Confidence
- high
How to read and use the data
Athens solar forecast: daily weather versus long-term PV yield
The daily and annual figures answer different questions. Use the dated forecast to plan tomorrow, and the PVGIS specific yield to compare locations or estimate a typical year.
Multi-year climate baseline
PVGIS specific yield
Athens's PVGIS specific yield is about 1,574 kWh/kWp per year. It is a multi-year climate benchmark, not a prediction for tomorrow or for this calendar year. In the PVGIS profile, August is typically the strongest month and December the weakest.
3, 5 and 10 kWp reference systems
Scale the same assumptions to your system size
SystemTomorrow estimate (likely range)PVGIS typical year
3 kWpTomorrow estimate (likely range)15.7 kWh13.8 kWh–16.1 kWhPVGIS typical year4,721 kWh/year
5 kWpTomorrow estimate (likely range)26.2 kWh23.1 kWh–26.8 kWhPVGIS typical year7,869 kWh/year
10 kWpTomorrow estimate (likely range)52.4 kWh46.1 kWh–53.6 kWhPVGIS typical year15,737 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
Treat the forecast as a gross solar-energy budget before household base load and conversion losses. The numbers support scheduling; they do not guarantee surplus.
Battery
Keep room for the solar window
Use 12:00-16:00 as the first candidate charging window. Battery state of charge, reserve settings and inverter limits still decide how much can be stored.
EV
Compare the charge with the 5 kWp budget
The scaled 5 kWp estimate is 26.2 kWh before household use. Compare the remainder after base load with the planned EV charge and stagger charging if needed.
Heat pump
Shift only flexible thermal demand
If comfort controls allow it, place discretionary hot-water heating or pre-heating inside 12:00-16:00. Never override frost protection, hygiene cycles or manufacturer limits.
Large loads
Avoid stacking appliances
A 3 kWp system scales to about 15.7 kWh for the day before household use. Run flexible loads sequentially during the strongest hours rather than assuming all forecast energy is simultaneous power.
Local questions
Solar forecast FAQ
How much could a 5 kWp solar system produce tomorrow in Athens?
Using the same south-facing, 35-degree and 14% loss assumptions, the 5 kWp estimate is 26.2 kWh for Tuesday, September 1, 2026, with a scaled likely range of 23.1 kWh–26.8 kWh. This is a linear reference-system estimate, not a site survey.
What does 1,574 kWh/kWp mean for Athens?
It means the PVGIS multi-year profile produces about 1,574 kWh in a typical year for each installed kWp under the reference assumptions. A 5 kWp system therefore scales to about 7,869 kWh in a typical year before site-specific adjustments.
Is the Athens forecast the same as the PVGIS annual estimate?
No. Tomorrow's forecast uses dated weather and an uncertainty band for one day. The PVGIS figure is a multi-year climate-based specific yield used for typical monthly and annual comparisons.
When should a battery, EV or heat pump use solar in Athens?
Start with 12:00-16:00, then check household base load, battery headroom, EV energy required and heat-pump safety or comfort constraints. The forecast estimates daily energy, not guaranteed instantaneous surplus.
Typical year
Solar production month by month in Athens
A standard 10 kWp system produces about 15,737 kWh in a typical year at this location. Monthly averages show seasonality; they are not a forecast for a specific year.
968Jan
994Feb
1350Mar
1459Apr
1527May
1528Jun
1659Jul
1670Aug
1437Sep
1261Oct
996Nov
887Dec
Values are kWh per month. Source: European Commission JRC PVGIS.
What makes Athens's solar profile different?The typical annual yield is about 1,574 kWh per installed kWp, ranking Athens #2 of 6 modelled locations in Greece. That is 4% above the median of the 6 Greece locations in this dataset. August is typically the strongest month and December the weakest; the stronger month produces about 1.9 times as much.
See the 12-month data
MonthMonthly outputDaily averageYear-to-year variation
MonthJanuaryMonthly output968 kWhDaily average31.2 kWh/dayYear-to-year variation±124 kWh
MonthFebruaryMonthly output994 kWhDaily average35.5 kWh/dayYear-to-year variation±128 kWh
MonthMarchMonthly output1,350 kWhDaily average43.5 kWh/dayYear-to-year variation±103 kWh
MonthAprilMonthly output1,459 kWhDaily average48.6 kWh/dayYear-to-year variation±114 kWh
MonthMayMonthly output1,527 kWhDaily average49.3 kWh/dayYear-to-year variation±97 kWh
MonthJuneMonthly output1,528 kWhDaily average50.9 kWh/dayYear-to-year variation±81 kWh
MonthJulyMonthly output1,659 kWhDaily average53.5 kWh/dayYear-to-year variation±58 kWh
MonthAugustMonthly output1,670 kWhDaily average53.9 kWh/dayYear-to-year variation±47 kWh
MonthSeptemberMonthly output1,437 kWhDaily average47.9 kWh/dayYear-to-year variation±93 kWh
MonthOctoberMonthly output1,261 kWhDaily average40.7 kWh/dayYear-to-year variation±135 kWh
MonthNovemberMonthly output996 kWhDaily average33.2 kWh/dayYear-to-year variation±103 kWh
MonthDecemberMonthly output887 kWhDaily average28.6 kWh/dayYear-to-year variation±112 kWh
Nearby solar forecasts
Compare Athens with nearby cities
Tomorrow, in one email
Get Athens's solar forecast by email
Tomorrow's expected production, likely range and strongest hours. One useful email each day.
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.
CSV and JSON snapshots are published under CC BY 4.0 with source attribution.