Trends in climate series and agro-climatic indices were evaluated for growing vines in Vale do Rio do Peixe, in the state of Santa Catarina. Daily data of the Meteorological Station of Videira for the period from 1971 to 2010 were used. The trend in the series was analyzed with the Mann-Kendall test and to estimate the magnitude of the trend it was used the median slope determined by the Theil - Sen estimator. The results showed an increasing trend in series of minimum air temperature at the annual scale and also in the seasons of the year. The maximum air temperature presented a significant trend of increase in the series of annual maximum temperature and in the maximum temperature in summer and winter. It was also observed an increase in frequency of hot days and hot nights. In terms of agrometeorological indices it was observed a significant trend of decrease in the number of frost events, in the reduction of the time of sprouting, flowering and harvesting, and a significant increase in thermal summation, in the Huglin index, and in the cold index. In relation to precipitation there was a significant trend of increase in the annual total precipitation and in precipitation during the period of growth of the vines as well as the number of days with rainfall amounts equal or higher than 20mm.
climate; phenology; vine; climate indices
