![]() ![]() This was 1.5☌ higher than for the 1900s, which had an average temperature of 11.0☌. The average (mean) temperature for the 2010s was 12.5☌. Temperature, sunshine and rainfall, monthly averages for the period 1991 to 2020 Monthĭownload monthly air temperature data from 1894 andĪverage annual air temperatures in Jersey since 1900 The long-term annual weather averages for the period 1991 to 2020 were: Jersey monthly air temperature and rainfall inĭownload the sunrise and sunset times since 2015 The mean daily sea temperature during 2021 was 12.99☌. The sunniest year on record was 2010 with 2,403.2 hours of sunshine. 2021 was the 2nd sunniest year since records began in 1894. ![]() The sunshine total for the year was 2,331.6 hours. The wettest day of the year was 2 October with 25.4mm of precipitation recorded. This compares with a 30-year average of 188.2 days per year. The rainfall total for the year was 905.7mm which is just shy of the 1991 to 2020, 30-year average of 918.2mm.ġ89 rainfall days were recorded with 0.2mm or more of rainfall. The lowest minimum air temperature recorded during 2021 was -3.0☌ on 11 February. The highest maximum air temperature recorded during 2021 was 30.1☌ on 21 July. The record warmest year was 2014 with a mean daily air temperature of 13.34☌. It goes on as a light red colour due to the mean temperature for the year being warmer than the 1971 to 2000 base line average temperature. Source: Jersey Met, download the chart dataĢ021 adds to the Climate Stripes record. The mean daily air temperature for the year was 12.31☌, just a little below the 1991 to 2020, 30-year average of 12.39 ☌. 2021 was the 4th sunniest year since sunshine records began in 1925. For example, at 80F (approximately 27C), the heat index will agree with the actual temperature if the relative humidity is 45, but at 110F (roughly 43C), any relative-humidity reading above. ![]()
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