Mud wallowing is an important comfort behaviour for wild boar (Sus scrofa), having several functions. Yet, the temporal changes of when wild boar visit mud wallows and how they use these areas has been rarely studied. To investigate seasonal and daily activity patterns and behaviour of wild boar at mud wallows, passive monitoring involved camera traps set up at ten natural wallows and eight rubbing trees in central Croatia over the course of a year, and the findings were compared with 40 random locations. The most animals were recorded at the wallows in spring and the fewest in winter. The relative abundance index at the wallows was highest in spring but showed no significant seasonal difference. Wild boar significantly preferred coniferous to deciduous trees for rubbing. Behavioural analysis revealed that rooting was most frequent at the wallows in spring, wallowing behaviour dominated in summer and autumn, and locomotion was predominant in winter. Activity patterns showed predominantly nocturnal activity at all sites, with a peak of activity around sunset, except for the wallow during summer when activity was mostly diurnal but peaking around sunset. Overall, there was a high overlap in activity patterns between the wallows and random sites, with the lowest overlap in summer due to increased diurnal use of wallows. A similar overlap was observed in autumn and winter. These findings highlight the multifunctional role of wallows and rubbing trees in wild boar behaviour, suggesting that targeted monitoring can serve as an effective tool for ecological research and population management, including applications in disease surveillance and control.