{"location":{"city":"Serniki-Kolonia","voivodeship":"Lubelskie","community":"Gmina Serniki","postalCode":"21-107","latitude":51.4306,"longitude":22.6717,"elevation":152},"climateZone":3,"standardOutsideTemp":-20,"annualMeanTemp":8.9,"monthly":[{"month":1,"outsideTemp":-2.04,"heatingDays":31,"degreeDayNum":621,"solarIrradianceKwhM2":24.5,"windSpeedAvg":5.18,"relativeHumidity":84,"outsideTempOnHeatingDays":-2.04},{"month":2,"outsideTemp":-0.95,"heatingDays":28,"degreeDayNum":535,"solarIrradianceKwhM2":42.4,"windSpeedAvg":5.14,"relativeHumidity":82.1,"outsideTempOnHeatingDays":-0.95},{"month":3,"outsideTemp":2.69,"heatingDays":31,"degreeDayNum":474,"solarIrradianceKwhM2":86.8,"windSpeedAvg":5.22,"relativeHumidity":76.2,"outsideTempOnHeatingDays":2.69},{"month":4,"outsideTemp":8.85,"heatingDays":29,"degreeDayNum":274,"solarIrradianceKwhM2":128.1,"windSpeedAvg":4.77,"relativeHumidity":70.2,"outsideTempOnHeatingDays":8.72},{"month":5,"outsideTemp":14.25,"heatingDays":25,"degreeDayNum":125,"solarIrradianceKwhM2":160.5,"windSpeedAvg":4.61,"relativeHumidity":69.8,"outsideTempOnHeatingDays":13.15},{"month":6,"outsideTemp":17.78,"heatingDays":16,"degreeDayNum":43,"solarIrradianceKwhM2":166.2,"windSpeedAvg":4.47,"relativeHumidity":70,"outsideTempOnHeatingDays":15.34},{"month":7,"outsideTemp":19.75,"heatingDays":9,"degreeDayNum":15,"solarIrradianceKwhM2":162.7,"windSpeedAvg":4.29,"relativeHumidity":70.8,"outsideTempOnHeatingDays":16.32},{"month":8,"outsideTemp":19.24,"heatingDays":10,"degreeDayNum":20,"solarIrradianceKwhM2":142,"windSpeedAvg":4.18,"relativeHumidity":70.4,"outsideTempOnHeatingDays":16.05},{"month":9,"outsideTemp":14.3,"heatingDays":25,"degreeDayNum":118,"solarIrradianceKwhM2":91.6,"windSpeedAvg":4.51,"relativeHumidity":75.8,"outsideTempOnHeatingDays":13.43},{"month":10,"outsideTemp":8.9,"heatingDays":30,"degreeDayNum":282,"solarIrradianceKwhM2":57,"windSpeedAvg":4.82,"relativeHumidity":80.4,"outsideTempOnHeatingDays":8.87},{"month":11,"outsideTemp":3.94,"heatingDays":30,"degreeDayNum":421,"solarIrradianceKwhM2":27.6,"windSpeedAvg":4.91,"relativeHumidity":84.9,"outsideTempOnHeatingDays":3.94},{"month":12,"outsideTemp":-0.41,"heatingDays":31,"degreeDayNum":570,"solarIrradianceKwhM2":18,"windSpeedAvg":5.09,"relativeHumidity":85.5,"outsideTempOnHeatingDays":-0.41}],"groundTemp1m":9.28,"groundTemp2m":9.28,"solarIrradianceKwhM2Year":1107.3,"windSpeedAvg":4.76,"relativeHumidityAvg":76.7,"suitability":{"score":67,"rating":"good","color":"lime","estimatedScop":4.1,"notes":["Wysokie nasłonecznienie — bardzo dobre warunki dla hybrydy pompa ciepła + PV."]},"_meta":{"source":"OPEN_METEO_ERA5_LAND_1991_2020","sourceLabel":"ERA5-Land Reanalysis (1991–2020)","fetchedAt":"2026-05-19T12:14:58.962Z","attribution":"Weather data by Open-Meteo.com (CC BY 4.0)","legalRef":"PN-B-02403:1982 (climateZone, standardOutsideTemp)","apiVersion":"v1"}}