Brute-force way:
type: custom:windrose-card
wind_direction_entity:
entity: sensor.weather_home_gismeteo_wind_bearing
windspeed_entities:
- entity: sensor.weather_home_gismeteo_wind_speed
name: Home
data_period:
hours_to_show: 24
card_mod:
style: |
circle + text { /* central value */
font-size: 500%;
}
g > text { /* other values */
font-size: 400%;
}
rect + text { /* scale */
font-size: 400%;
}
svg { /* may be needed if a font-size for a scale too large */
overflow: visible;
}