Precipitation

・Precipitation is relatively infrequent year-round. Even in February, the peak month, occurrences remain limited. It is slightly more common in summer. ・No snowfall has been recorded.

Thunderstorms

・Thunderstorms occur throughout the year and increase from summer to autumn. The highest frequency is from January to March. ・They are most often observed between 18Z and 24Z. While they can occur at most hours (except around 11Z), they tend to concentrate in the local late afternoon to evening, indicating both frontal thunderstorms and convection triggered by afternoon heating.

Wind Direction

・The prevailing wind throughout the year is from the northeast to east, particularly east-northeast (60–80°), followed by southeast (120–130°). The ENE component becomes more pronounced in winter (June–August). ・Crosswinds are generally uncommon throughout the year.

Wind Speed

・Wind speeds of 4–6 kt occur most frequently in all months. Strong winds above 13 kt are relatively rare, though slightly more common in winter. Average speeds tend to be higher from May to October. ・Gusts are very infrequent throughout the year, even during the peak months of May, July, and August.

Visibility

・Visibility of 3200 m or less is mainly observed in winter, though it can occur in most months. Very low visibility below 800 m is relatively rare and tends to concentrate from May to July (late autumn to winter). ・Low visibility (≤3200 m) occurs most frequently between 08Z–12Z, with visibility below 800 m especially concentrated in this period. ・Since it often occurs from pre-dawn to early morning in winter, moist low-level air and nighttime radiational cooling are likely key factors.

Ceiling

・Low ceilings below 1200 ft are not uncommon, occurring frequently in June and from August to November. Extremely low ceilings below 200 ft tend to concentrate from May to July.