November 2025 marked a significant escalation in crime for Holyhead, a coastal town on the Isle of Anglesey, with a crime rate of 11.3 per 1,000 residents—54.8% above the UK average of 7.3 per 1,000. The most striking trend was the dominance of violent crime, with violence and sexual offences accounting for 41.6% of all reported incidents, at a rate of 4.7 per 1,000. This figure is 83% higher than the UK average, a disparity that may be linked to the area's role as a transport hub and its exposure to transient populations. Anti-social behaviour also surged, with a rate of 2.0 per 1,000 (17.5% of total crimes), 89% above the UK average. The seasonal context of November—characterised by dark evenings, Bonfire Night, and Black Friday shopping—likely exacerbated these trends, as increased foot traffic and reduced visibility create conditions conducive to disorder and personal crime. Public order offences, though smaller in volume, also showed a 91% increase over the UK average, suggesting a broader pattern of community tensions. While property crimes remained relatively low, the sharp rise in criminal damage and arson (up 150% month-on-month) indicates a potential link to seasonal events or localized disputes. The town's unique position as a gateway to Wales, combined with its seasonal tourism, may contribute to these dynamics, though further analysis is required to confirm such connections. Residents are advised to remain vigilant, particularly in public spaces and during late-night hours, as the data underscores a clear deterioration in safety metrics compared to both previous months and the national average.