This graph is updated each hour
The Temperature value below the graph will update every 10 minutes.
MAISON ST. LOUIS OBSERVATORY - JERSEY
"Recording the weather in Jersey since 1894".
Weather observations commenced at Maison St. Louis Observatory on 1st January 1894 but it wasn't until later that year that the Observatory building itself was complete. The Observatory continued its programme of manual observations for 111 years until 2004.
With advances in technology new automatic weather stations have been developed and these have changed the way we observe the weather. A Campbell Scientific Data Logger was installed at Maison St. Louis early in 2004 enhancing the range of weather related elements we now record. In the past a reading may well have been taken manually just once a day, now we are able to view live data and have all the latest information at our fingertips.
The opportunity was taken with the installation of this system to increase the elements of weather recorded. New sensors have been included to measure ultra violet radiation, now very important to us all.
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The Maximum and Minimum air temperature in
each hour are displayed. This graph is updated each hour The Temperature value below the graph will update every 10 minutes. |
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Rainfall is displayed as hourly totals up to 5mm. This graph is updated each hour. |
Many of the original Observatory instruments are still preserved at St. Louis, many in good working order. These include hand made wind recording instruments, designed and built by Father Ray in the 1920's and 30's. Whilst wind has been recorded on this site for over 108 years and although the exposure is not ideal this does give a representative wind for the town of St. Helier. Modern recording instruments have now been installed at the Observatory with displays shown below.
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The hourly mean wind speed and maximum gust
speed are displayed, above, along with hourly mean wind direction, below. These graphs are updated each hour |
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In recent years Ultra Violet radiation and its links to skin cancer have
become more of a concern to health practitioners. Together with Jersey and Guernsey Health
Promotion Departments, the Jersey Meteorological Department have added a summer UV index
to its forecasts, and produce an actual UV index graph from the St. Louis
Observatory. A description of the UV index can be found here. |