The climate of Shengsi Islands Scenic Area

The Shengsi Islands have a subtropical maritime monsoon climate, with no severe cold in winter and no scorching heat in summer. The climate is pleasant, with spring temperature lower than autumn temperature, long winter and summer, short spring and autumn, and sufficient light. The daily and annual temperature ranges are small; the seasonal onset time lags behind that of the mainland; the relative humidity is high, the frost-free period is long, and there are more foggy days. Fog occurs all year round, more in spring and summer than in autumn and winter, and the average annual foggy days is 55. The most foggy days are from March to June, accounting for 68.4% of the total annual foggy days. Most of the fog that occurs in this county is advection fog, which has a wide range, a large concentration, a long duration, and the worst visibility is less than 30 meters. There are often strong winds and typhoons throughout the four seasons, and the wind direction changes with the seasons. Northerly winds prevail in winter, southerly winds prevail in summer, and wind directions are messy and changeable in spring and autumn. Precipitation is generally more in spring and summer than in autumn and winter.

The annual average temperature is 15.8 degrees. August is the hottest month of the year with an average temperature of 26.8 degrees. January is the coldest with an average temperature of 5 degrees. The first day when the daily average temperature over the years stably passes 10 degrees generally occurs in April. On the 3rd, the whole day generally ends on November 27th.

Spring begins on March 21st and ends on June 20th, lasting 87 days. The seasonal average temperature is 16.3 degrees. The average rainfall days in the season are 41.2, and the average precipitation is 312.7 mm.

Summer starts on June 21st and ends on September 30th, lasting 102 days. The wind direction is mainly southerly. Typhoons often affect this season. The seasonal average temperature is 25.4 degrees. The average rainy days in the season are 33.1 and the precipitation is 318.8 mm.

Autumn begins on June 21st and ends on September 30th, lasting 102 days. The wind direction is mainly southerly. Typhoons often affect this season. The seasonal average temperature is 25.4 degrees. The average rainy days in the season are 33.1 and the precipitation is 318.8 mm.

Winter begins on December 1st and ends on March 25th of the following year, lasting 115 days. Northerly wind prevails.

The average seasonal temperature is 6.5 degrees Celsius, the average seasonal rainy days are 40 days, and the precipitation is 210 mm