August 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.

august weather

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.

August 2018

August did not live up to the exceptional summer months that preceded it, but was by no means a write-off.
The average temperature in August was 18.5oC, which was 0.8oC warmer than the year before and 0.2oC above the thirty-year average. Rainfall totalled 44mm for the month, 61mm drier than August of last year and 8mm less rainfall than the seasonal norm.
  
Looking at the number of hours of sunshine we find that the total of 221.7 hours, some 23 hours less than was recorded twelve months previously and also 23 hours shy of what is typical for the time of year.

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 August there was only one day, the 26, with no recorded sunshine, and a run of six straight days at the beginning of the month on which in twelve or more hours of sunshine were recorded.  The lowest minimum temperature was around 12oC on 26 August.  August 6th saw the warmest temperature of the month at 29oC.

There were 16 days on which no recorded rain fell with a further eight days on which only trace amounts fell.  By far the wettest day of the month was 8 August with a tally of 16mm.

August Data Table

Download PDF