The day-to-day weather has very little impact on the volume of visits to Jersey, but can play a major role in influencing the types of activities that visitors who are here do, and thereby, the amount of money that they spend. Some attractions and activity providers thrive only when the sun shines, others see higher patronage on rainy days.
The following charts show how the weather in recent months compares with the thirty-year average for that month. Bars are shaded red if, in that particular month, it was colder, wetter or duller than normal, and green if it was warmer, drier and sunnier than normal, but as referenced above not all tourism suppliers will necessarily benefit from the ‘green’ months.
The average temperature in October was 14.4oC, some 1.3oC higher than last October and 1.0oC up on the thirty-year average. Rainfall totalled 67mm for the month, which is 10mm above the exceptionally dry October of last year, but still some 37.7mm below the figure that one could expect for the time of year.
Looking at the number of hours of sunshine we find that the total of 134.5 hours, some 10 hours up on the seasonal norm but 43 hours below the figure for October 2016.
In summary, the October weather was drier, warmer and sunnier than one might hope for at the time of year, but was neither as dry and as sunny as the October of 2016.
Averages can be misleading – you can have many values that are a bit below normal being offset by a single value that is significantly above normal. In meteorological terms for example you could have a month during which 28 days see not a drop of rain, but three days of torrential downpours. Statistically this might lead to an ‘average’ amount of rainfall for the month, but most visitors would not have experienced ‘average’ weather.
Looking at October there were only two days when no sunshine was recorded but a further nine days when there was no more than around two hours. Both 3rd and 4th October witnessed almost ten hours of sunshine.
On many days during October the diurnal temperature range was quite narrow. At no point during the month did the temperature exceed 20oC, but it came very close to doing so on the 14th. The lowest temperature was recorded on the final day of the month at around 6oC.
There were twelve days with no recorded rainfall and five days with only trace amounts. The wettest days were 19th, 23rd, with 12mm and 11mm respectively.