{"location":{"city":"Lębork","voivodeship":"Pomorskie","community":"Lębork","postalCode":"84-300","latitude":54.5381,"longitude":17.7425,"elevation":24},"climateZone":1,"standardOutsideTemp":-16,"annualMeanTemp":8.6,"monthly":[{"month":1,"outsideTemp":-0.43,"heatingDays":31,"degreeDayNum":571,"solarIrradianceKwhM2":18.8,"windSpeedAvg":6.39,"relativeHumidity":86.5,"outsideTempOnHeatingDays":-0.43},{"month":2,"outsideTemp":0.09,"heatingDays":28,"degreeDayNum":506,"solarIrradianceKwhM2":36.7,"windSpeedAvg":6.29,"relativeHumidity":84.8,"outsideTempOnHeatingDays":0.09},{"month":3,"outsideTemp":2.64,"heatingDays":31,"degreeDayNum":476,"solarIrradianceKwhM2":79.4,"windSpeedAvg":6.04,"relativeHumidity":80.5,"outsideTempOnHeatingDays":2.64},{"month":4,"outsideTemp":7.62,"heatingDays":29,"degreeDayNum":311,"solarIrradianceKwhM2":128,"windSpeedAvg":5.46,"relativeHumidity":75.3,"outsideTempOnHeatingDays":7.49},{"month":5,"outsideTemp":12.45,"heatingDays":28,"degreeDayNum":177,"solarIrradianceKwhM2":167.7,"windSpeedAvg":5.27,"relativeHumidity":73.5,"outsideTempOnHeatingDays":11.7},{"month":6,"outsideTemp":15.91,"heatingDays":23,"degreeDayNum":77,"solarIrradianceKwhM2":167.8,"windSpeedAvg":5.36,"relativeHumidity":74.6,"outsideTempOnHeatingDays":14.72},{"month":7,"outsideTemp":18.18,"heatingDays":16,"degreeDayNum":32,"solarIrradianceKwhM2":162.8,"windSpeedAvg":5.13,"relativeHumidity":76.8,"outsideTempOnHeatingDays":16.05},{"month":8,"outsideTemp":18.07,"heatingDays":16,"degreeDayNum":32,"solarIrradianceKwhM2":135,"windSpeedAvg":5.04,"relativeHumidity":77.2,"outsideTempOnHeatingDays":15.96},{"month":9,"outsideTemp":14.07,"heatingDays":28,"degreeDayNum":120,"solarIrradianceKwhM2":86.5,"windSpeedAvg":5.4,"relativeHumidity":80,"outsideTempOnHeatingDays":13.69},{"month":10,"outsideTemp":9.24,"heatingDays":31,"degreeDayNum":271,"solarIrradianceKwhM2":49.6,"windSpeedAvg":5.87,"relativeHumidity":83.1,"outsideTempOnHeatingDays":9.24},{"month":11,"outsideTemp":4.59,"heatingDays":30,"degreeDayNum":402,"solarIrradianceKwhM2":21.5,"windSpeedAvg":5.84,"relativeHumidity":87.9,"outsideTempOnHeatingDays":4.59},{"month":12,"outsideTemp":1.08,"heatingDays":31,"degreeDayNum":524,"solarIrradianceKwhM2":13.1,"windSpeedAvg":6.09,"relativeHumidity":88.2,"outsideTempOnHeatingDays":1.08}],"groundTemp1m":8.87,"groundTemp2m":8.87,"solarIrradianceKwhM2Year":1066.9,"windSpeedAvg":5.68,"relativeHumidityAvg":80.7,"suitability":{"score":67,"rating":"good","color":"lime","estimatedScop":4.1,"notes":["Wysokie nasłonecznienie — bardzo dobre warunki dla hybrydy pompa ciepła + PV.","Wysoka średnia prędkość wiatru (5.7 m/s) — większe straty przez infiltrację."]},"_meta":{"source":"OPEN_METEO_ERA5_LAND_1991_2020","sourceLabel":"ERA5-Land Reanalysis (1991–2020)","fetchedAt":"2026-05-19T12:26:46.730Z","attribution":"Weather data by Open-Meteo.com (CC BY 4.0)","legalRef":"PN-B-02403:1982 (climateZone, standardOutsideTemp)","apiVersion":"v1"}}