Read the rain map
Start with the latest available image, then move through the timeline. A broad rain band calls for a different plan from a few scattered showers. Read the legend before comparing colours: rain intensity may be expressed in millimetres per hour, while a forecast accumulation gives millimetres over a stated interval.
Look beyond your exact location. Rain approaching from a neighbouring area can matter more for your next journey than the colour currently above your street.
Observations and short forecasts
Earlier radar frames describe precipitation detected or estimated at that time. Future frames are predictions. A shower can grow, weaken or change direction, so a smooth animation is not a promise that the same rain will reach you.
Some providers combine radar, satellite estimates and weather models. A worldwide map therefore does not mean that ground radar observes every country or ocean.
Make a useful daily check
Before a walk, cycle ride or school run, compare the next relevant frames with your local hourly forecast. In winter also check temperature and snow information; a precipitation colour alone may not establish whether rain or snow reaches the ground. Recheck when your departure time approaches.
Questions about this map
Does an empty map guarantee dry weather?
No. It can indicate little precipitation, missing data or limited coverage. Check the legend and timestamp, then compare the local forecast.
How far ahead can I use rain radar?
Use the horizon actually shown by the selected provider. Forecast skill generally decreases with lead time, especially for small, fast-changing showers.