November 2017 Weather Round-Up

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.

Nov Weather RounUp

The following tables show the monthly profile of temperatures, rainfall and sunshine over the past couple of years, the annual change, and finally the variance to the thirty-year average. When looking at the monthly figures warmer temperatures, drier weather and higher sunshine hours are shaded green, and when looking at comparisons a warmer, drier and sunnier relative outcome is shaded green.

November 2017

The average temperature in November was 10.3oC, some 0.5oC higher than last November and 0.4oC up on the thirty-year average. Rainfall totalled 111mm for the month, which is 28mm less than November of last year, but 4.7mm above 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 108.9 hours, some 24 hours up on the seasonal norm and 13 hours above the figure for November 2016.

In summary, the November weather was very close to the seasonal norm in terms of temperature and rainfall, but notably sunnier than one might expect.

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 November there were five days when no sunshine was recorded but a further five days when there was no more than around two hours. Four days out of the first eight enjoyed almost eight hours of sunshine.

As is often the case at this time of year the diurnal temperature range was quite narrow. At no point during the month did the temperature exceed 16oC, but it came very close to doing so on the 22nd. At no point during the month did the temperature fall below 5oC.

There were eleven days with no recorded rainfall and three days with only trace amounts. The wettest day by a very considerable margin was Monday 27th with 24mm, almost half of the entire total for the month.

Nov 2017 Weather Round Up Table 1