The 2017 year has been one of the driest year in Spain from the last decade, so it has been the worst harvest since 2005. Also, our damming are under historic low levels as you can see here. Of course, even the 2005 was worse in our area (central area in Spain) because it rained about 114mm when the historic mimimun was at 184 mm in 1945. We looked for information on www.aemet.es website and using information offered by our weather station, we will show some data below.
The reference period in Spain is of 650 mm from 1971 to 2000. Even, as you can see in our first graph, the historic average rain of Iberian Peninsula is about 700mm, taking into account for this study information from the beginning of the 20th century. In the next table, you can see average rain of last ten years in Spain (you have more information from here).
These general data of Spain are very different with respect to our area (La Mancha). In our area, the average rain between 2000 and 2010 is of 520 mm (you have more information of all weather stations from here) and even we see more recently year, the average rain goes down about 450 mm.
In our Village, the year 2016 was rainy with a precipitation of 512mm. Therefore, the harvest was really good. But the year 2017 has been the opposite because it has only rained 292mm. Besides, that data is not really valid because at 7th of July it rained 48mm in two hours so threes couldn't absorb all water and cereals or pules vegetables were harvested. Also, we have to speak of hot because it is an important data since year after year, it is increasing so water stress is more evident. Below, you can see some graphs that we have obtained from the data of our weather station.
Versión en español.