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Monitoring plant phenology has become a widespread methodology to monitor plant behaviour due to the increase, frequency and intensity of extreme climatic events. These extreme climatic events emphasise both plant susceptibility and farmers’ vulnerability, as the latter constantly face the need to change or adjust cultural operations on commercial orchards, since these events have important economic repercussions. This study aims to present the main results of the meteorological conditions that influenced peach tree blossom period (cv. Royal Time) during the last five years. Temperature and precipitation data were collected in an orchard in 2015, 2016, 2018 and 2019. This showed the phenological behaviour of peach trees, especially the environmental conditions that influenced full blossom. The main results show that in 2015 the blossom period was very short, about 17 days, and full blossom occurred on March 12th while in 2016 the blossom period lasted 51 days due low temperatures. In 2018 high precipitation was the main variable that influenced the delay of full blossom, whereas in 2019 the average of the highest temperatures, resulted in an anticipation of full blossom, which occurred on March 15th, similar to what had been observed in 2015.

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