Windrush Weather

Author: Eric Gilbert

  • Summer returns

    On Sunday the 10.8 hours of sunshine and light winds from the south south west meant the thermometer rose to 24.3C. This was 5.6C above average and the warmest day since 18th August. With the sun now losing some of its strength the UV level at its peak is only in the ‘Moderate’ range.

    It was another dry day, the tenth consecutive dry day this month. Rainfall for September is still just 3.0mm whilst evaporation amounts to 21mm.

    The past night was cool with the thermometer sinking to 6.9C at 05.29 on Monday, which was 2.3C below average and the second coolest night this month after the 2nd (5.7C).

    Monday dawned with thick fog limiting visibility to 200m. The sun, as a red globe, cold be seen shortly afterwards through the fog but it wasn’t until after 08.00, as the sun gained strength, that the fog began to thin improving visibility. By 08.30 the fog had totally dissipated.

    The centre of the anticyclone is now much further to the east, close to Switzerland, also having intensified a few mb. This shift in position will mean the air mass will be brought from a more southerly or south easterly direction today.

    Update on Monday at 16.10: temperature rose even higher than on Sunday with a maximum of 27.1C at 15.59. This was 8.4C above the average making it the hottest day since 12th August (34.1C)

  • Anticyclone still I control

    During Saturday the anticyclone slowly began to migrate from the eastern Atlantic, where it has been centred for over a week, over the UK to the east. This meant that the wind backed from the west to south west in the late afternoon. The 8.4 hours of sunshine pushed the thermometer to a maximum of 20.4C being 1.8C above the 36-year average.

    The minimum of 10.9C overnight was also above average (+1.7C).

    Sunday brought hazy sunshine initially as the sun broke through thin cloud on the eastern horizon but shortly after 07.25 it was shining strongly that lifted the thermometer to read 13.3C 08.00. The barometric pressure has risen again as the centre of the high pressure is a little closer, currently over the English Channel heading for the near continent, to currently read 1022.9mb.

    Update on Sunday at 17.10: thermometer soared to a maximum of 24.3C at 16.17, which was 5.6C above the 36-year average and the warmest day since 18th August.

  • Calm, dry weather persists

    Friday was predominantly cloudy with just four hours of sunshine that limited the temperature rise to a maximum 16.9C being 1.7C below average. The wind was mostly light and from the southwest with a maximum gust of just 16mph. It was the eighth consecutive dry day thanks to the continuing effect of the high-pressure system centred in the eastern Atlantic.

    The thermometer fell way to a minimum very early on Saturday with a minimum of 11.6C at 01.10 being 2.4C above average.

    Saturday was initially quite cloudy and dull but by 08.00 was beginning to brighten with hazy sunshine through thin cloud. The temperature had recovered to 13.5C at that time.

  • Coldest night in three months

    Although there was more sunshine on Thursday with almost nine hours, the light wind from the north west, a cooler direction, meant that the thermometer was down 2C on the Wednesday peak with a maximum of 18.7C, which was almost exactly the average.

    It was another dry with the UV level reaching the ‘High’ category for an hour between 12.15 and 13.15.

    The past night was very cool as the thermometer sank to a low of just 5.4C. This was 3.8C below the 36-year average adn the coolest night since 7th June.

    Friday arrived with weak sunshine after dawn with thin high cloud muting the strength of the sun.

  • Warmth rose after cold front passed through

    Wednesday morning was again gloomy under low cloud as a cold front slowly traversed the area. In the early afternoon the sky began to lighten and sunny periods lifted the temperature to a maximum of 20.3C being 1.6C above average. Late afternoon the wind veered into the northwest and north.

    We have now had six successive dry days with the rainfall for September just 3.0mm and evaporation totalling 14mm.

    The past night was cool under clearing skies allowing the thermometer to drop to 7.4C at 03.26 Thursday morning.

    After dawn on Thursday the sun broke through scattered light cloud and began shining strongly. The high pressure is still influencing our weather so another dry day or two are possible. The wind has veered further, now very light and from the north east.