Hong Kong’s humid subtropical climate and dense urban light make Sai Kung and island ridges the practical dark options. Autumn high-pressure cells bring the year’s best transparency.
Typhoon season cloud and summer haze often limit deep-sky to brief windows.
China · Pearl River Delta · ~22.3°N
Check the live Tonight score for Hong Kong (cloud, dew, transparency, and astronomical dark), then read the hourly cloud timing chart and moonless dark window on this page.
Use the best clear window clock times after astronomical darkness, and prefer moonless hours when deep-sky contrast matters.
This hub shows moonrise, moonset, illumination, and the longest moonless astronomical-dark interval for Hong Kong. Open Dark Sky Window for the full ephemeris card.
ISS passes are spottable near dusk or dawn when the sky is dark and the station is still sunlit. This page lists the next spottable pass when available.
Learn: Is tonight good for stargazing? · How to see the Milky Way