A view of Rotterdam, taken from the roof of the Maassilo, Rotterdam, The Netherlands, June 2023

Netherlands · 10 kWp reference system

Rotterdam solar forecast

Photo: Rob Oo, CC BY 2.0. Cropped, resized and converted to WebP by GridPassport.

Wednesday, August 5, 2026

About 38.8 kWh tomorrow

For a standard 10 kWp south-facing system in Rotterdam, GridPassport estimates 38.8 kWh on Wednesday, August 5, 2026, with a likely range of 27.9-48.6 kWh. The strongest production window is expected at 16:00-20:00 local time.

Updated Aug 4, 2026, 08:53 PM GMT+2 · fresh snapshot
Likely range
27.9-48.6 kWh
Strongest window
16:00-20:00
Confidence
medium
Forecast my solar output

Typical year

Solar production month by month in Rotterdam

A standard 10 kWp system produces about 10,342 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 Rotterdam's solar profile different? The typical annual yield is about 1,034 kWh per installed kWp, ranking Rotterdam #3 of 10 modelled locations in Netherlands. That is close to the median of the 10 Netherlands locations in this dataset. May is typically the strongest month and December the weakest; the stronger month produces about 4.6 times as much.

See the 12-month data
MonthMonthly outputDaily averageYear-to-year variation
MonthJanuary Monthly output359 kWh Daily average11.6 kWh/day Year-to-year variation±57 kWh
MonthFebruary Monthly output527 kWh Daily average18.8 kWh/day Year-to-year variation±140 kWh
MonthMarch Monthly output914 kWh Daily average29.5 kWh/day Year-to-year variation±175 kWh
MonthApril Monthly output1,230 kWh Daily average41.0 kWh/day Year-to-year variation±162 kWh
MonthMay Monthly output1,317 kWh Daily average42.5 kWh/day Year-to-year variation±152 kWh
MonthJune Monthly output1,282 kWh Daily average42.7 kWh/day Year-to-year variation±140 kWh
MonthJuly Monthly output1,255 kWh Daily average40.5 kWh/day Year-to-year variation±160 kWh
MonthAugust Monthly output1,150 kWh Daily average37.1 kWh/day Year-to-year variation±124 kWh
MonthSeptember Monthly output959 kWh Daily average32.0 kWh/day Year-to-year variation±78 kWh
MonthOctober Monthly output667 kWh Daily average21.5 kWh/day Year-to-year variation±105 kWh
MonthNovember Monthly output394 kWh Daily average13.1 kWh/day Year-to-year variation±60 kWh
MonthDecember Monthly output289 kWh Daily average9.3 kWh/day Year-to-year variation±65 kWh

Nearby solar forecasts

Compare Rotterdam 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.