Month - Rainy Season

| Region | Dry Month (Example) | Rainy Month (Example) | Defining Threshold | Primary Driver | | :--- | :--- | :--- | :--- | :--- | | | January (2 mm) | July (850 mm) | Absolute > 200 mm | Monsoon trough | | Nigeria (Kano) | January (0 mm) | August (290 mm) | P > PET (Arid threshold) | ITCZ migration | | Brazil (Manaus) | August (60 mm) | March (300 mm) | P > 100 mm + Humidity > 80% | Amazon convection |

Defining and Characterizing the ‘Rainy Season Month’: A Hydro-Climatological Analysis rainy season month

| If your region is... | A month is "Rainy" if rain exceeds... | Example months | | :--- | :--- | :--- | | | 150 mm | Mar-May (Equinox) | | Monsoon (Asia) | 100 mm (consecutive) | Jun-Jul-Aug-Sep | | Mediterranean | 40 mm (winter only) | Nov-Dec-Jan | | Arid Steppe | 25 mm | Varies by year | | Region | Dry Month (Example) | Rainy