SPEI-3?Standardised drought index: compares the balance between rainfall and evapotranspiration with what is normal for the same period. Below −1 moderate, below −1.5 severe, below −2 extreme drought. The number 3 or 12 is the number of months accumulated.
Moderate drought -1.15
2026-09 Source: Open-Meteo (ERA5), Observatory calculations
SPEI-12?Standardised drought index: compares the balance between rainfall and evapotranspiration with what is normal for the same period. Below −1 moderate, below −1.5 severe, below −2 extreme drought. The number 3 or 12 is the number of months accumulated.
-0.02
2026-09 Source: Open-Meteo (ERA5), Observatory calculations
Temperature anomaly (ref. 1991–2020)?Difference between the observed mean temperature and the 1991–2020 average for the same month. A positive value means a warmer-than-normal month.
+1.1 °C
2026-09 Source: Open-Meteo (ERA5), Observatory calculations
Very hot days in the month?A day when the maximum temperature exceeds the 90th percentile for the same month in 1991–2020, i.e. among the 10% usually hottest days of that month.
8
2026-09 · rainfall 15 % Source: Open-Meteo (ERA5), Observatory calculations