October 2018 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.

The following tables show the monthly profile of temperatures, rainfall and sunshine over the past three 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.

October

October 2018

October was about as warm as one would expect for the time of year, but distinctly drier and, in particular sunnier than usual.

The average temperature in October was 13.7°C, which was 0.7°C cooler than the year before but 0.3°C above the thirty-year average.  Rainfall totalled 60mm for the month, 7mm drier than October of last year and 45mm less rainfall than the seasonal norm.   

Looking at the number of hours of sunshine we find that the total of 191.8 hours, meaning that October saw 57 more hours than was the case twelve months before and 68 hours more than the thirty-year average.

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 three days, the 02, 06 and 14 with no recorded sunshine at all, and three further days with less than an hour each day.  On five days the sun shone for ten hours or more, a good achievement considering the shortening hours of daylight.  The lowest minimum temperature was around 6°C on a series of six consecutive days towards the end of October.  10 October saw by far the warmest day of the month at a fraction under 24°C.

There were 19 days on which no recorded rain fell with a further three days on which only trace amounts fell.  There were three days with between 13 and 15mm of rainfall on 06, 13 and 28, notably all either a Saturday or a Sunday.

October Weather Data