{"location":{"city":"Zarębowo","voivodeship":"Kujawsko-Pomorskie","community":"Zakrzewo","postalCode":"87-706","latitude":52.7411,"longitude":18.5905,"elevation":95},"climateZone":3,"standardOutsideTemp":-20,"annualMeanTemp":9,"monthly":[{"month":1,"outsideTemp":-1.02,"heatingDays":31,"degreeDayNum":589,"solarIrradianceKwhM2":21.9,"windSpeedAvg":5.54,"relativeHumidity":84.6,"outsideTempOnHeatingDays":-1.02},{"month":2,"outsideTemp":0.04,"heatingDays":28,"degreeDayNum":507,"solarIrradianceKwhM2":39.8,"windSpeedAvg":5.51,"relativeHumidity":81.6,"outsideTempOnHeatingDays":0.04},{"month":3,"outsideTemp":3.17,"heatingDays":31,"degreeDayNum":459,"solarIrradianceKwhM2":82.7,"windSpeedAvg":5.49,"relativeHumidity":76.9,"outsideTempOnHeatingDays":3.17},{"month":4,"outsideTemp":8.68,"heatingDays":29,"degreeDayNum":280,"solarIrradianceKwhM2":128.9,"windSpeedAvg":5.04,"relativeHumidity":71,"outsideTempOnHeatingDays":8.53},{"month":5,"outsideTemp":13.72,"heatingDays":26,"degreeDayNum":140,"solarIrradianceKwhM2":161.6,"windSpeedAvg":4.88,"relativeHumidity":69.7,"outsideTempOnHeatingDays":12.73},{"month":6,"outsideTemp":17.12,"heatingDays":18,"degreeDayNum":53,"solarIrradianceKwhM2":163.8,"windSpeedAvg":4.81,"relativeHumidity":69.9,"outsideTempOnHeatingDays":15.09},{"month":7,"outsideTemp":19.22,"heatingDays":11,"degreeDayNum":20,"solarIrradianceKwhM2":161.6,"windSpeedAvg":4.68,"relativeHumidity":70.9,"outsideTempOnHeatingDays":16.22},{"month":8,"outsideTemp":18.95,"heatingDays":12,"degreeDayNum":23,"solarIrradianceKwhM2":138.6,"windSpeedAvg":4.5,"relativeHumidity":70.6,"outsideTempOnHeatingDays":16.09},{"month":9,"outsideTemp":14.34,"heatingDays":26,"degreeDayNum":115,"solarIrradianceKwhM2":89.3,"windSpeedAvg":4.85,"relativeHumidity":75.7,"outsideTempOnHeatingDays":13.62},{"month":10,"outsideTemp":9.23,"heatingDays":30,"degreeDayNum":272,"solarIrradianceKwhM2":53.4,"windSpeedAvg":5.11,"relativeHumidity":80.9,"outsideTempOnHeatingDays":9.21},{"month":11,"outsideTemp":4.32,"heatingDays":30,"degreeDayNum":410,"solarIrradianceKwhM2":24.5,"windSpeedAvg":5.16,"relativeHumidity":86.5,"outsideTempOnHeatingDays":4.32},{"month":12,"outsideTemp":0.53,"heatingDays":31,"degreeDayNum":541,"solarIrradianceKwhM2":16,"windSpeedAvg":5.36,"relativeHumidity":86,"outsideTempOnHeatingDays":0.53}],"groundTemp1m":9.34,"groundTemp2m":9.34,"solarIrradianceKwhM2Year":1082.1,"windSpeedAvg":5.08,"relativeHumidityAvg":77,"suitability":{"score":70,"rating":"good","color":"lime","estimatedScop":4.1,"notes":["Wysokie nasłonecznienie — bardzo dobre warunki dla hybrydy pompa ciepła + PV.","Wysoka średnia prędkość wiatru (5.1 m/s) — większe straty przez infiltrację."]},"_meta":{"source":"OPEN_METEO_ERA5_LAND_1991_2020","sourceLabel":"ERA5-Land Reanalysis (1991–2020)","fetchedAt":"2026-05-19T12:10:40.125Z","attribution":"Weather data by Open-Meteo.com (CC BY 4.0)","legalRef":"PN-B-02403:1982 (climateZone, standardOutsideTemp)","apiVersion":"v1"}}