{"location":{"city":"Ciecholewy","voivodeship":"Pomorskie","community":"Starogard Gdański","postalCode":"83-207","latitude":54.0301,"longitude":18.5709,"elevation":95},"climateZone":2,"standardOutsideTemp":-18,"annualMeanTemp":8.2,"monthly":[{"month":1,"outsideTemp":-1.47,"heatingDays":31,"degreeDayNum":603,"solarIrradianceKwhM2":20.5,"windSpeedAvg":6.18,"relativeHumidity":86.4,"outsideTempOnHeatingDays":-1.47},{"month":2,"outsideTemp":-0.62,"heatingDays":28,"degreeDayNum":526,"solarIrradianceKwhM2":38.9,"windSpeedAvg":6.18,"relativeHumidity":83.7,"outsideTempOnHeatingDays":-0.62},{"month":3,"outsideTemp":2.32,"heatingDays":31,"degreeDayNum":486,"solarIrradianceKwhM2":81.6,"windSpeedAvg":6.03,"relativeHumidity":78.6,"outsideTempOnHeatingDays":2.32},{"month":4,"outsideTemp":7.57,"heatingDays":29,"degreeDayNum":313,"solarIrradianceKwhM2":128,"windSpeedAvg":5.57,"relativeHumidity":73.7,"outsideTempOnHeatingDays":7.49},{"month":5,"outsideTemp":12.51,"heatingDays":28,"degreeDayNum":174,"solarIrradianceKwhM2":164.4,"windSpeedAvg":5.34,"relativeHumidity":72.6,"outsideTempOnHeatingDays":11.88},{"month":6,"outsideTemp":15.94,"heatingDays":23,"degreeDayNum":75,"solarIrradianceKwhM2":165.3,"windSpeedAvg":5.35,"relativeHumidity":73.3,"outsideTempOnHeatingDays":14.71},{"month":7,"outsideTemp":18.2,"heatingDays":16,"degreeDayNum":31,"solarIrradianceKwhM2":161.6,"windSpeedAvg":5.19,"relativeHumidity":74.5,"outsideTempOnHeatingDays":16.09},{"month":8,"outsideTemp":18.02,"heatingDays":15,"degreeDayNum":33,"solarIrradianceKwhM2":136.2,"windSpeedAvg":5.01,"relativeHumidity":74.4,"outsideTempOnHeatingDays":15.88},{"month":9,"outsideTemp":13.73,"heatingDays":28,"degreeDayNum":130,"solarIrradianceKwhM2":87.5,"windSpeedAvg":5.38,"relativeHumidity":78.1,"outsideTempOnHeatingDays":13.35},{"month":10,"outsideTemp":8.64,"heatingDays":31,"degreeDayNum":290,"solarIrradianceKwhM2":50.9,"windSpeedAvg":5.76,"relativeHumidity":82.4,"outsideTempOnHeatingDays":8.64},{"month":11,"outsideTemp":3.82,"heatingDays":30,"degreeDayNum":425,"solarIrradianceKwhM2":22.3,"windSpeedAvg":5.68,"relativeHumidity":87.8,"outsideTempOnHeatingDays":3.82},{"month":12,"outsideTemp":0.19,"heatingDays":31,"degreeDayNum":552,"solarIrradianceKwhM2":14.2,"windSpeedAvg":5.97,"relativeHumidity":87.9,"outsideTempOnHeatingDays":0.19}],"groundTemp1m":8.65,"groundTemp2m":8.65,"solarIrradianceKwhM2Year":1071.3,"windSpeedAvg":5.64,"relativeHumidityAvg":79.4,"suitability":{"score":61,"rating":"fair","color":"yellow","estimatedScop":4.1,"notes":["Wysokie nasłonecznienie — bardzo dobre warunki dla hybrydy pompa ciepła + PV.","Wysoka średnia prędkość wiatru (5.6 m/s) — większe straty przez infiltrację."]},"_meta":{"source":"OPEN_METEO_ERA5_LAND_1991_2020","sourceLabel":"ERA5-Land Reanalysis (1991–2020)","fetchedAt":"2026-05-19T12:27:10.417Z","attribution":"Weather data by Open-Meteo.com (CC BY 4.0)","legalRef":"PN-B-02403:1982 (climateZone, standardOutsideTemp)","apiVersion":"v1"}}