Observations on the climate of Penzance and the district of the Land's End in Cornwall : with an appendix containing meteorological tables, and a catalogue of the rarer indigenous plants. Read before the Penwith Agricultural Society, and published by request of the members / By John Forbes.

  • John Forbes
Date:
1821
Catalogue details

Licence: Public Domain Mark

Credit: Observations on the climate of Penzance and the district of the Land's End in Cornwall : with an appendix containing meteorological tables, and a catalogue of the rarer indigenous plants. Read before the Penwith Agricultural Society, and published by request of the members / By John Forbes. Source: Wellcome Collection.

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    The variation of temperature between the differ¬ ent seasons is also very small; in other words, their mean temperature is remarkably equal. The following is the difference:— Between W inter and Spring - * - 2° —Spring and Summer - - 14° - Summer and Autumn - - 2° -—- Autumn and Winter - - 14° The coldest month is January ;—the warmest month is July:—April and October approach nearest to the mean temperature of the year. From the foregoing statements it will appear evident to those acquainted with meteorological details, that the temperature of Penzance is remarkable for its small annual, monthly, and daily range, and for its equability from day to day; and, also, that the mean temperature of our winters is uncommonly high for a British locality, and our summer temperature ( uncommonly low for our southerly latitude. It is, also, apparent that the difference of temperature between the different seasons is remarkably small, and especially between autumn and winter, and be¬ tween winter and spring. But these circumstances will appear more evident by briefly mentioning a few of the very numerous and striking results, which I have deduced from a minute comparison of registers of the weather, kept at different places in the island.* Taking the three months November, December, and January, together, I find that the temperature
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