Temperature of Places in Ceylon. 143 



force, and the sea breezes during the day were accompanied 

 by continual rains, with frequent thunder and lightning. 



3. Trincomalee. — The register was kept during the years 

 1809-10-12, and the thermometer was recorded three times 

 daily, as at Colombo. The average temperature at sunrise, 

 for three years, is 78-71 > at 3 p. m. 84.57, and the mean of 

 these 81.64. The average temperature of 9 p. Mi is 80.74, 

 or ith of the mean range below the average daily tempera- 

 ture. Mean temp, of the warmest month (June) 84.54, of 

 the coldest month (January) 77.79. Max. temp, observed 

 72, minimum 22.5. Extreme range of the thermometer for 

 three years, 20.5. The observations on the state of the wea- 

 ther are too brief to afford any other information respecting the 

 climate of the place. The climate of Ceylon is that of islands in 

 genera], characterized by uniformity of temperature, and great 

 humidity. The sea-breeze which prevails at Point de Galle, 

 and Colombo, after the middle of April, and which is in fact 

 the S. W. monsoon of the Indian ocean, has become a land 

 wind before it arrives at Trincomalee. The effects of its 

 passage over even that narrow country may be traced in the 

 greater dryness of the air, indicated by an increased range of 

 the thermometer, and the higher temperatures which occur 

 during the season in which this wind prevails. The average of 

 January for three years is 77.79, at sunrise 76.56, afternoon 

 79.03, max. temp. 83, min. 73. February, mean temp. 78.6, 

 sunrise 76.6, afternoon 80.6, max. 84, min. 72. March, 81.3, 

 sunrise 78.9, afternoon 83.8, max. 86, min. 74.5. April, 

 83.91, sunrise 81.08, afternoon 86.75, max. 90, min. 76. 

 May, mean temp. 83.99, sunrise 80.41, afternoon 87.58, 

 max. 72.5, min. 75. June, mean temp. 81.54, sunrise 80.58, 

 afternoon 88.5, max. 92, min. 75. July, mean. temp. 84.45, 

 sunrise 80.5, afternoon 88.4, max. 91, min. 75. August, 

 mean temp. 83.08, sunrise 79.3, afternoon 86.66, max. 91, 

 min. 76. September, mean temp. 82.28, sunrise 80, after- 

 noon 86, max. 70.5, min. 76. October, mean temp. 80.85, 

 sunrise 77-74, afternoon 83.96, max. 90, min. 73. Novem- 

 ber, 79.81, sunrise 76.7, afternoon 82.92, max. 89, min. 73. 

 December, mean temp. 78.37, sunrise 76, afternoon 80.75, 

 max. 89, min. 93. 



