Church of Santa Caterina, Palermo, Sicily, Italy. The sanctuary.

Italy · 10 kWp reference system

Palermo solar forecast

Photo: Tango7174, CC BY-SA 4.0. Cropped, resized and converted to WebP by GridPassport.

Wednesday, August 5, 2026

About 47.5 kWh tomorrow

For a standard 10 kWp south-facing system in Palermo, GridPassport estimates 47.5 kWh on Wednesday, August 5, 2026, with a likely range of 33.1-54.7 kWh. The strongest production window is expected at 10:00-14:00 local time.

Updated Aug 4, 2026, 08:53 PM GMT+2 · fresh snapshot
Likely range
33.1-54.7 kWh
Strongest window
10:00-14:00
Confidence
medium
Forecast my solar output

Typical year

Solar production month by month in Palermo

A standard 10 kWp system produces about 15,314 kWh in a typical year at this location. Monthly averages show seasonality; they are not a forecast for a specific year.

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

What makes Palermo's solar profile different? The typical annual yield is about 1,531 kWh per installed kWp, ranking Palermo #3 of 10 modelled locations in Italy. That is 7% above the median of the 10 Italy locations in this dataset. July 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
MonthJanuary Monthly output913 kWh Daily average29.4 kWh/day Year-to-year variation±134 kWh
MonthFebruary Monthly output992 kWh Daily average35.4 kWh/day Year-to-year variation±191 kWh
MonthMarch Monthly output1,308 kWh Daily average42.2 kWh/day Year-to-year variation±137 kWh
MonthApril Monthly output1,395 kWh Daily average46.5 kWh/day Year-to-year variation±99 kWh
MonthMay Monthly output1,527 kWh Daily average49.2 kWh/day Year-to-year variation±124 kWh
MonthJune Monthly output1,531 kWh Daily average51.0 kWh/day Year-to-year variation±53 kWh
MonthJuly Monthly output1,657 kWh Daily average53.4 kWh/day Year-to-year variation±33 kWh
MonthAugust Monthly output1,619 kWh Daily average52.2 kWh/day Year-to-year variation±75 kWh
MonthSeptember Monthly output1,352 kWh Daily average45.1 kWh/day Year-to-year variation±76 kWh
MonthOctober Monthly output1,188 kWh Daily average38.3 kWh/day Year-to-year variation±133 kWh
MonthNovember Monthly output969 kWh Daily average32.3 kWh/day Year-to-year variation±109 kWh
MonthDecember Monthly output864 kWh Daily average27.9 kWh/day Year-to-year variation±83 kWh

Nearby solar forecasts

Compare Palermo with nearby cities

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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.