DAX Best Month and Worst Month Measure

Identifies the month name with the highest and lowest total sales within the current filter context.

Time IntelligenceAdvancedbest monthworst monthtopn

DAX code

Best Month =
VAR MonthlySales = SUMMARIZE(ALLSELECTED('Date'), 'Date'[Month Name], "@Sales", [Total Sales])
RETURN
    MAXX(TOPN(1, MonthlySales, [@Sales]), 'Date'[Month Name])

Worst Month =
VAR MonthlySales = SUMMARIZE(ALLSELECTED('Date'), 'Date'[Month Name], "@Sales", [Total Sales])
RETURN
    MAXX(TOPN(1, MonthlySales, [@Sales], ASC), 'Date'[Month Name])

Generate a Power BI date table

Notes

Replace 'Date'[Month Name] with a column that uniquely identifies each month if your data spans multiple years.

Requirements

A Date table with a Month Name column and the Total Sales measure.

Builds on these measures

How to use this measure

In Power BI Desktop, select the table that should hold the measure and choose New measure on the ribbon.
Paste the code, then replace the placeholder table and column names with your own. The My table names fields above do this for you.
Run it through the DAX Formatter if you want it laid out in your team's style.

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More DAX resources

Browse all 175 measures in the Power BI DAX Measures Library, or search the library for something similar to Best Month and Worst Month.