Meteora is climbed on foot: rock-cut stairways, open courtyards and shadeless viewpoints. In rain or ice the stairs are a different matter, and in summer the midday heat bites. Check Kalambaka before you set off.
Overcast clouds
Indicative reference based on OpenWeatherMap data for Kalambaka, at the foot of the rocks; up top it is usually a little cooler and windier. Remember the dress code does not relax with the heat: shoulders and knees covered just the same.