Abstract This study analyses trends in Hong Kong’s convective weather using long‐term observer‐based and shorter‐term instrument‐based data. Annual thunderstorm days increased significantly by 1.9 days decade −1 during 1947–2024, notably in June–September, consistent with increasingly favourable warm‐season environments for thunderstorms, including significantly increasing trends in thermodynamic, moisture and dynamic factors. However, no significant increase in thunderstorm days was found in 2006–2024, matching weakly increasing but statistically insignificant trends in lightning counts and peak currents. No significant trends in thunderstorm‐related gusts were detected in 1994–2024. Time series decomposition revealed interannual and interdecadal variability in thunderstorm days, potentially obscuring these trends’ statistical significance.
Lui et al. (Mon,) studied this question.