258 
The above Table shows the average number of wet days in 
Bath, or days on which rain falls to the amount of not less than 
one hundredth of an inch, to be about 161. If we included the 
days on which the amount is too small to be measured, it would 
certainly exceed one half the number of days in the year.* It 
must be remembered, however, that a day of twenty-four hours is 
here meant, and that much of the rain falls during the night ;— 
the fine days, therefore, as ordinarily estimated would amount to 
many more than the above calculation gives. 
The greatest number of days on which rain fell in any one year 
in the above Table was 210, in 1872. The least number of days 
in any one year was 113 in 1870. 
The month with the highest average number of rainy days is 
January, the number being nineteen. The month with the lowest 
average number is June, the number being 8.9. 
The greatest number of rainy days in any single month during 
the decade was twenty-nine, in September, 1866. The least 
number in any single month was two, occurring in September 
1865, April 1870, and June 1870. 
In the above instances, the months with the greatest and least 
number of rainy days coincide with the months of greatest and least 
rain-fall. This perhaps might be expected ; yet the coincidence is 
not a necessary one, as an equal quantity of rain may fall in one or 
a few days or be distributed over many days. Thus in May, 1870, 
the rainfall was the same as in May, 1872, within .004 inches, 
but the number of rainy days in the latter month was more than 
double the number in May, 1870. We have the converse of this 
phenomenon in the month of January, 1869, compared with 
January in the following year: the number of rainy days was 
exactly the same in the two months ; but the rainfall of January, 
1869, was more than double the fall in January, 1870.: 
* Howard says that “ in our climate, on an average of years, it rains nearly 
every other day more or less,” —Climate of London. 
