¡iSea conditions¡j

• (1)Prevailing wind:
  The wind directions from October to February are mostly NE whereas from June to September are SW and S.

• (2)Wind scale:
  Slight breeze or gentle breeze in the summer season and fresh breeze or near gale (about 5-7 grade on the beau fort wind scale ) in the winter season.

• (3)Monsoon:
  In the winter season, the NE monsoon is an extremely strong wind, sometimes reaching a gale or grade 9 on the beau fort wind scale.

• (4)Typhoon:
  The typhoon season is normally from June to November; usually causing strong swells in the port.

• (5)Precipitation:
  According to the records of the rain-fall during 1911-1997 the annual mean precipitation is 2079.40 mm and the monthly mean precipitation is 193.3 mm, most of the rain-fall were happened during May to October especially in typhoon season.

• (6)Temperature:
  According to the records of the temperature during 1911-1997 the annual mean temperature is 22.8°C in august, the lowest monthly mean temperature are 17.4°C in January and 17.7°C in February.

• (7)Tides:
  According to the tides statistics from 1951 to 1974 of this port are as follows:

  • (a) Mean high-water tide level (MHWL) :+181 cm

  • (b) Mean low-water tide level (MLWL) : +84 cm

  • (c) Mean tide level (MWL) : +133 cm

  • (d) Highest high-water tide level (HHWL) : +305 cm

  • (e) Lowest low-water tide level (LLWL) : -28 cm

• (8)Littoral current:
  According to the pilot information the littoral current around this port are N during flood tide and S during ebb tide with a speed about 1~1 1/2 knots.

Update¡G10/15/2009