Some Mad March Days but also record temperatures

Weather News

A fallen dead tree at Lower Swaines on 11th March 2021 is being surveyed by Epping Town Council staff prior to commencing the clear-up
Epping Town Council staff begin the clear-up of a fallen dead tree at Lower Swaines on 11th March following high winds

Some Mad March Days but also record temperatures

Graph of barometric pressure sampled every 10 minutes throughout March 2021

March can be a quite stormy month as the warming temperatures disrupt the balance between maritime and polar air masses. This March however was relatively well behaved and there was just one stormy spell of weather mid month, when from 10th to 13th nearby depressions gave maximum gusts of Force 6-7, and a maximum gust on 11th of 33.0mph, enough to bring down a dead tree at Lower Swaines. Unsurprisingly these four days were also the only ones to record air pressure below 1000 hPa, with a lowest reading of 989.5 hPa.

A graph showing daily maximum and minimum temperatures for March 2021

Overall it was a fairly average March, but in the last three days a sudden Spring-like burst of warm sunny weather gave us our record March high of 23.9 °C – indeed each of those three days beat the previous March high of 21.0 °C set in 2012. It was also just the fifth March in our records with no air frost.

A column chart showing daily rainfall totals for March 2021

March is one of our driest months, and this March was a little drier than average, with 35.6mm of rain recorded, compared with the long term average of 45.4mm. No surprise then that it was a relatively sunny month, with just one day, the 10th, with no sunshine at all. The sunniest day was the warmest, the 30th, with 10.0 hours of sunshine highlighting the white Cherry and Blackthorn blossom in our gardens and hedgerows.

A wind rose diagram showing the prevalence of wind directions sampled every ten minutes during March 2021
A wind rose diagram showing the maximum gusts for each compass segment during March 2021
MeasureUnitMinimumAverageMaximumAverage minAverage maxTotal
Relative humidity%308098
Wind source (most common/highest gust)SectorNWSW
Wind high gustmph3.43317.8
Rain daily accumulationmm1.17.835.6
Barometric pressurehPa989.51022.71036.5
Solar irradiance during daylightW/m²165863529

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