I'm surprised this one hasn't been done before.
It is one of my favourite climates.
Sunny and fairly dry with comfortable temperatures pretty much year-round. Nice, dry sunny summers but not too hot. Nice pleasant winters. Mild nights.
https://en.m.wikipedia.org/wiki/Saint_Helier#Climate
It is classed as an oceanic climate but exhibits characteristics of a Mediterranean climate such as the dry summers and mild wet winters.
It also has an average of 8 hrs sunshine per day between May-Aug and 2-3 hrs between Dec-Feb according to weather atlas.com
https://www.weather-atlas.com/en/jer...light_sunshine
Month High / Low(°C) Rain
January 9° / 5° 14 days
February 9° / 5° 11 days
March 11° / 6° 11 days
April 13° / 7° 9 days
May 16° / 10° 8 days
June 19° / 12° 6 days
July 21° / 14° 6 days
August 21° / 15° 7 days
September 19° / 13° 8 days
October 16° / 11° 12 days
November 12° / 8° 15 days
December 10° / 6° 14 days
My first and only time going there was when I was 8 years old. I went on holiday there for a week. The flight was an hour long. I remember the weather being pleasant and sunny and I don't remember any rain.
Jersey is located in the Channel Islands btw, though I'm not sure if it is part of the U.K. or France as it is actually closer to France than to England.