Tartu and Emajõgi in 2019

Estonia · 10 kWp reference system

Tartu solar forecast

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

Wednesday, August 5, 2026

About 56.1 kWh tomorrow

For a standard 10 kWp south-facing system in Tartu, GridPassport estimates 56.1 kWh on Wednesday, August 5, 2026, with a likely range of 46.9-62.1 kWh. The strongest production window is expected at 13:00-17:00 local time.

Updated Aug 4, 2026, 09:53 PM GMT+3 · fresh snapshot
Likely range
46.9-62.1 kWh
Strongest window
13:00-17:00
Confidence
high
Forecast my solar output

Typical year

Solar production month by month in Tartu

A standard 10 kWp system produces about 9,481 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 Tartu's solar profile different? The typical annual yield is about 948 kWh per installed kWp, ranking Tartu #3 of 4 modelled locations in Estonia. That is close to the median of the 4 Estonia locations in this dataset. May is typically the strongest month and December the weakest; the stronger month produces about 12.3 times as much.

See the 12-month data
MonthMonthly outputDaily averageYear-to-year variation
MonthJanuary Monthly output176 kWh Daily average5.7 kWh/day Year-to-year variation±57 kWh
MonthFebruary Monthly output441 kWh Daily average15.8 kWh/day Year-to-year variation±136 kWh
MonthMarch Monthly output868 kWh Daily average28.0 kWh/day Year-to-year variation±228 kWh
MonthApril Monthly output1,156 kWh Daily average38.5 kWh/day Year-to-year variation±153 kWh
MonthMay Monthly output1,390 kWh Daily average44.8 kWh/day Year-to-year variation±178 kWh
MonthJune Monthly output1,373 kWh Daily average45.8 kWh/day Year-to-year variation±142 kWh
MonthJuly Monthly output1,357 kWh Daily average43.8 kWh/day Year-to-year variation±112 kWh
MonthAugust Monthly output1,143 kWh Daily average36.9 kWh/day Year-to-year variation±140 kWh
MonthSeptember Monthly output838 kWh Daily average27.9 kWh/day Year-to-year variation±108 kWh
MonthOctober Monthly output467 kWh Daily average15.1 kWh/day Year-to-year variation±106 kWh
MonthNovember Monthly output160 kWh Daily average5.3 kWh/day Year-to-year variation±33 kWh
MonthDecember Monthly output113 kWh Daily average3.6 kWh/day Year-to-year variation±35 kWh

Nearby solar forecasts

Compare Tartu 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.