Weathergami

To show real-world examples of weathergami charts, several examples were prepared for locations with different climate types (Table 1).

Source: wiktionary

If we just plopped down a dot for every observation we’d end up with an undifferentiated black blob, so the weathergami technique visualizes frequency of temperature pairs: we divide the chart area into a fine hexagonal grid, and then color each hexagon according to how many daily observations fall within it.

Source: wiktionary