PHYSICAL GEOGRAPHY 



281 



ture in the Vestmannaeyjar was 7 C., at Berufjord ll 1 /-' C., 

 on Grimsey lo 1 /? C. and in Modrudalur 24V2 C. 



The mean temperature for the whole island , according to the 

 observations to hand, is 2 1 /2 C., but the real temperature is un- 

 doubtedly considerably lower, because only one station on the im- 

 mense plateau, was included. The mean temperature of the winter 

 on the north and east coasts ranges between l c and - 3 1 /* C., 

 and of the summer between B 1 /^ and <SC., of South Iceland the 

 mean temperature for the winter ranges between and -2C., 

 and the summer temperature between 9 and 10. The difference 

 between the summer and winter temperatures increases with the 

 distance from the sea, as shown in Fig. 26. The difference is 

 greatest between the plateau and the Vestmannaeyjar. The mean 

 temperature for the year in Modrudalur is -0.4C., and in the 

 Vestmannaeyjar 5.3 C.; the mean summer temperature of Modru- 

 dalur 8.4 C. and of Vestmannaeyjar 10.2 C.; and the winter tem- 

 perature of Modrudalur - - 7.2 C., and of Vestmannaeyjar -f 1.2 C.; 

 thus the winter in Modrudalur is 8 colder than in the Vestmanna- 

 eyjar. The south coast is the warmest part of the country, and in 

 the Vestmannaeyjar the mean temperature of none of the months 

 is below freezing point. The mean temperature for the year on 

 the south coast is as follows:- Bjarnanes 3.7 C., Sandfell in Onefi 

 4, Eyrarbakki 3.6, Havnefjord 3.9 and Reykjavik 4.2. The cli- 

 mate of the coast of Iceland is said to be mildest below Eyjafjoll 

 and in Myrdalur, but no observations are to hand from these two 

 places. 



Table IV. Account of the Air Temperature along the coasts, in the 

 interior districts, and on the plateau, according to the seasons. 



