Windrush Weather

Category: Commentary

  • Limited sunshine but no rain on Thursday

    Thursday only gave us 4.6 hours of sunshine but the very light breeze from the south west, with a maximum gust of only 9mph, lifted the temperature to a maximum of 23.1C, which was 0.4C above the average. No measurable rain fell or was observed.

    Cloud persisted overnight again so it was another mild night with a low of 11.6C, about average for July.

    Friday arrived with misty and still conditions with both anemometers stationery at 08.00 and had been for much of the night.

  • Changeable

    The wind on Wednesday backed a few degrees into the southwest, also less strong, that with 6.3 hours of sunshine allowed the thermometer to rise to 21.3C. This was still 1.4C below average, in fact we have only enjoyed one day this month when the maximum was above average due to the changeable weather.

    Wednesday saw lines of heavy, thundery showers moving southwest to northeast across the west country and up into the Midlands. These were to the west of this area, bar one, that grazed Marlborough and brought us a very brief, heavy shower amounting to 0.6mm. I noted late afternoon a continuous line of heavy showers stretching from South Devon to Gloucestershire.

    The overnight minimum of 12.5C was 0.7C above average due once again to the thick cloud cover.

    Thursday arrived sunless due to the continuing total cloud cover. The wind at 0800 had dropped out completely as the high pressure began to exert its presence with a pressure of 1019.4mb, the highest this month.

  • As before – sunshine and showers but less of the latter

    The showers on Tuesday were infrequent and very light amounting to just 0.4mm with sunshine of 7.7 hours. The UV peak level was agin briefly into the Very High category.

    Peak temperatures by day were below average (-2.8C) with a maximum of 19.9C as the wind had veered into the west, a cooler direction and much stronger, with a maximum gust of 28mph.

    Wednesday morning followed a mild night when the thermometer did not sink below 13.4C (+1.6C) but total cloud cover after dawn obscured any sunshine early on in the morning.

    The barometric pressure has begun to rise as the depression, now centred off the northern North Sea, eases away and an anticyclone edges closer.

  • Another deluge but arrived in the evening

    Monday gave us strong sunshine during the morning with a total of 7.9 hours and the UV up to the Very High level, briefly, as advance cloud from the intense depression approaching from the Atlantic obscured the sun early afternoon. The thermometer rose to 21.1C, which was the coolest day this month being 1.6C below average.

    The first rain drops from the depression were noted just after 18.15 with the main rain starting half an hour later, heavy at times amounting to 10.1mm. This brought the monthly total to 17.1mm when the average is 59.6mm.

    Tuesday was initially cloudy but as the hang back of cloud from the intense depression eased away eastwards the sun came out just before 0715. However, after 0800 cloud began to build allowing only broken sunshine with the thermometer having recovered to 14.4C at 0800, the coolest start to a day this month.

  • Sunshine and showers

    Between the 5.9 hours of sunshine there were several showers the heaviest of which occurred between 2200 & 2245. Then daily rainfall total was 4.9mm.

    The thermometer did not reach an average temperature on Sunday with a maximum of 21.4c being 1.3C below, however the past night was mild with a minimum of 12.0C being just above average.

    Glorious sunshine greeted the arrival of Monday that lifted the temperature to 16.3C at 0800. However, an approaching depression in the eastern Atlantic is shown with the barometric pressure the lowest for three weeks with a current reading of 1006.5mb. It will be off the Cornish coast later today with more rain and stronger winds this evening.