Windrush Weather

Category: Commentary

  • UV again Very High

    In the strong sunshine on Monday the UV level rose even higher with a value of 9.0, which was at the top end of Very High and the highest since 7th June 2021 (9.5).

    It was the sixth consecutive dry day with loss of equivalent rainfall due to evaporation of 3.6mm. Rainfall this month totals just 12.0mm and evaporation of 33m.

    The thermometer soared to 22.2C, which was 2.0C above the 38-year average, which was followed by a very cool night with the thermometer sinking to 4.6C at 04.58 on Tuesday being 5.5C below the average.

    Global sunshine reached 13.8 hours on each of the last three days. This is the highest value this year but it is almost mid-summer.

    Tuesday brought sunshine after dawn with the temperature recovering to 15.2C at 08.00.

  • Humidity begins to fall

    The ridge of high pressure, reaching in from mid-Atlantic, continues to dominate our weather. Sunday was another dry day with the equivalent of another 3.5mm of rainfall lost through evaporation from ground sources and plant life, that totals 32mm this month against the rainfall total of 12.0mm. The humidity at 08.00 on Monday was as low as 75% as the ground and air dry out under the many hours of sunshine and drying breeze.

    The thermometer rose to 20.4C, just above average on Sunday and last night fell to 8.0C being 2.1C below average.

    Monday brought strong sunshine after dawn with the temperature having recovered to 15.2C. The wind has veered a few degrees to come form the northwest, later to back again into the west or southwest. The barometric pressure at 08.00 read 1026.0mb, the highest this month.

  • Ridge of high pressure continues to bring much sunshine

    The UV level on Saturday was again rated Very High with a dry day and the peak temperature of 21.8C, just above average. The solar energy was the highest this year, but it is almost mid-summer.

    The clear skies overnight meant a below average minimum (-1.3C) with a low pf 8.8C

    We are nearly half way through June with minimal rainfall of just 12.0mm when the average is 54.2mm, I wonder if this is also going to be a relatively dry month. Only one month in 2022 has brought above average rainfall and that was February (+11mm).

    The loss of equivalent rainfall due to evaporation from ground sources and plant life for the the last two days is 3.53mm and 3.84mm relatively. The total loss for the month is 29mm against the recorded rainfall of 12.0mm.

    Sunday arrived with bright sunshine and the temperature had recovered to 15.6C at 08.00 under the influence of the anticyclone in mid-Atlantic with the pressure at 08.00 reading 1024.5mb, the highest this month.

  • UV highest since July 2022

    In the strong sunshine on Friday the thermometer soared to 22.4C, which was 2.2C above average. The UV level peaked at 8.7, which was at the top end of Very High and the highest since 3rd July 2022 when 8.8 was recorded.

    A very brief, light shower was observed at 20.15 but the rainfall was not measurable.

    The past night saw a minimum of 10.2C, average for June.

    Variable sunshine greeted Saturday that lifted the thermometer to 15.5C at 08.00 under the influence of a ridge of high pressure with a reading at 08.00 of 1021.8mb, the highest this month.

  • Very warm start to the new day

    Although the maximum of 18.0C was below average (-2.2C) on Thursday the overnight minimum of 12.4C, a mild night, was 2.3C above. The modest breeze came from the southwest with a peak gust of 14mph at head-height. The reduced sunshine from Wednesday also contributed to the lower daytime temperature as also the UV level of 6.0, down to High from Very High on the two previous days.

    The sun greeted the new day on Friday that saw the thermometer rise to 17.4C by 08.00, the warmest start to a day at that time since 23rd July(17.6C). The barometric pressure has recovered the last five days to read 1018.7mb at 08.00, the highest at that time since 4th July.