Statistical and spectral analyses of wave characteristics in the offshore region of Qingdao are presented based on one year of continuous field observations. The intra-annual variations of significant wave height (H_s) and wave period, together with their probabilistic distributions and spectral structures, are systematically examined. H_s ranges from 0.11 to 2.78 m, with an annual mean of 0.51 m, exhibiting pronounced seasonal variability. Both wave height and wave period distributions are well represented by a two-parameter Weibull model. Spectral analysis indicates that monthly averaged wave spectra are predominantly unimodal, with peak frequencies concentrated between 0.1 and 0.2 Hz, reflecting wind-sea-dominated conditions. Bimodal spectra, indicative of mixed swell and wind-sea systems, are observed in February, August, and September. Regression analysis among characteristic wave parameters and spectral moments reveals strong correlations, while empirical ratios deviate from classical deep-water theoretical values due to shallow-water influences and mixed sea states. During Typhoon Bavi, wave spectra were predominantly single-peaked, and the wave field was dominated by low-frequency swells around 0.09 Hz. These findings provide region-specific insight into the local wave climate and offer a scientific basis for offshore engineering design and coastal hazard mitigation in the Qingdao waters.