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 tables (download below) show the monthly profile of temperatures, rainfall and sunshine over the past few 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.
March was a much warmer, a little drier and much sunnier than is typically the case for the year – exactly mirroring the situation the month before.
The average temperature in March was 10.0oC, which was 2.5oC warmer than the year before and 1.5oC above the thirty-year average. Rainfall totalled 65mm for the month, some 54mm drier than the rather soggy March of 2018, and 4mm below the seasonal norm.
Looking at the number of hours of sunshine we find that the total of 185.2hours, making it the sunniest month since last October with 54 hours more than twelve months before and 46 hours up on 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 March there were only three days with no recorded sunshine at all, and two further days with less than an hour. The sunniest day was 30thMarch with a shade under twelve hours. The lowest minimum temperature was around 4oC on 26thof the month, while 30thMarch got the accolade for warmest day of the month at a balmy 18oC.
There were 13 days on which no recorded rain fell with a further three days on which only trace amounts fell. The wettest day of the month was the 4thwith 11mm.