The Climate at Goldhanger and around the Blackwater

The climate on the Essex costal region and around the Blackwater Estuary is notably different to the majority of the UK and even other parts of Essex. Being on the east coast with prevailing westerly winds, and low land, cloud thickness and rainfall are on average very low, resulting in sunshine levels that on average are higher.

There are also two surprising beneficial consequences of climate change in our region described...  towards the end of this page

The most significant meteorological phenomenon is known as the rain shadow effect...

Extensive national and regional data is available from the UK Met.Office showing the history and variations in climate across the UK over many years, and this data has been interpreted here to demonstrate its significance for this coastal region...

rainfall levels

     

sunshine levels

These maps reveal that the immediate vicinity of the Blackwater has the combination of both very low rainfall and high levels of sunshine, comparable to the south coast. The two driest places in the UK are recorded as St Osyth and Shoeburyness, both on the Essex coast. The two driest gardens in the UK open to the public are Beth Chatto's Garden at Elmstead Market and RHS Hyde Hall, again both in Essex. The total annual rainfall recorded near Goldhanger in 2013 was 51.7cm. Here are some average annual rainfalls in centimetres from the Met. Office website as a comparison:

St Osyth

Shoeburynes

Chelmsford

50.7

51.5

59.1

Colchester

Oxford

Cardiff

  60

  65

115.2

 

National and regional weather forecasters sometimes say “...and it will be drier on the east coast", but more often say “...and it will be cooler on the east coast". However, the average temperature maps available and summarised below show that both the summer and winter temperatures along our part of the Essex coast are not significantly different to those along the south coast. So perhaps they should be saying “...and an easterly wind-chill effect will make it seem cooler on the east coast”. With increased “global warming” a cooler east coast on hot summer days maybe no bad thing!

average summer temperatures

average winter temperatures

An additional and very noticeable effect on the east coast is the frequent sunny mornings which are another consequence of the rain shadow effect. This diagram shows the what happens as the sun rises from the east and meets the clouds coming from the south-west at around midday...

There is one further effect of being on low land in the east of the country...

As the sun begins to set in the west it emerges from behind the clouds frequently covering most of the country to the west and there is often a short period of bright, colourful sunsets that illuminate tall exposed buildings, such as the Church Tower.

The Church tower at sunset

view from The Chequers Inn looking east

across The Square and along Head St.

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Farmers and gardeners know that coastal areas benefit from the moderating effect of the warmer sea in winter months, which is another meteorological phenomena known as Maritime or Marine Influence, and large estuaries such as the Blackwater bring that effect further inland. Crops located near the estuary, such as the orchards once all around Goldhanger, were, and still, are less likely to suffer from frost damage. In addition, there is the temperature effect of differing altitudes, giving a average reduction in ambient temperature of about 2 degrees centigrade for each 100 metres of elevation and making the low lying coastal region slightly warmer on average than just a few miles inland.

The favourable climate has had, and still does have, significant benefits on several products and features in the area, including...

Salt extraction in the Blackwater      Salt extraction - at Longwick       Maldon Crystal Salt Co.   Longwick Farm

Oyster cultivation in the Blackwater

Charles Page's orchards in Church St. and Fruitfields apple orchards on the Little Totham Rd

S.S.Wilkin at Bounds Farm and Wilkin & Sons - products

North Maldon Growers – sweetcorn, pumpkins, Crown Prince squashes & courgettes

Leisure activities on the Blackwater  and  Millbeach & Hotel

 Walnut trees in the village

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In recent years there have been two surprising beneficial effects of climate change

in the Essex and Suffolk coastal regions...

1  There have been very few if any hosepipe bans during recent summer droughts compared with other parts of the UK

The explanation for this goes back to the mid 1900s when the local water companies realised that the growing population in the region needed more fresh water, however the average rainfall was, and still is, the lowest in the UK, with few large rivers to maintain the supply in summer time. The solution was to build new large reservoirs. Today the privatised Essex and Suffolk Water Company have inherited five reservoirs which are wholly owned by them...

            

Hanningfield                   Abberton                       Ardleigh                     Alton Water              Trinity Broads

These huge reservoirs are continuously filled by both the local rivers, and by deep aquifer wells in the dry months. They clearly still providing a more than adequate supply to al Essex and Suffolk customers. Therefore one might ask why does this Company not supply other water companies in the south with some of this abundant resource?

(for example Wikipedia tells us that Abberton reservoir holds 41,000 mega-litres of fresh water)

The answer is most likely to be associated with the way all the water companies were privatised which created local monopolies (unlike electricity and gas) and their need to make large profits. E & S Water Co. could well sell the water to other water companies, but why would another water company pay for more water when they can simply impose hosepipe bans on customers for little or no cost to the company? Also someone would have to pay for new distribution pipe.

 

2  Compared with other parts of the UK there have been almost no recorded sewage leaks into rivers and sea in this region.

here are four maps that demonstrate the differences compared to other parts of the UK...

             

UK wide rivers sewage pollution   ...in the South East             UK coastal sewage polution       ...in the South East

          a Rivers Trust interactive map                             two Surfers Against Sewage interactive maps

at...   https://theriverstrust.org/sewage-map               at...   www.sas.org.uk/water-quality/sewage-pollution-alerts                      

The explanation for this second phenomenon and its local benefits is associated with the geography of the region, as described at the top of this page, resulting in a notably different climate, now unmistakably being enhanced by global warming changes.

There is a very obvious coloration between the Rivers Trust’s UK wide rivers-sewage pollution map above and the MET office annual rainfall map shown near the top of the page (and here ) and water quality alerts on the eastern side of the country are apparently much less common.

At first site one might think that low rainfall would result in less clean water entering rivers, so there would be proportionally more pollution, but this does take account of the actions of water companies in western parts of the UK where they increasingly suffer short periods of very heavy rain and local flooding that results in ancient water treatment plants being unable to cope and have to dump unprocessed material into rivers and the sea. Apparently tthis is within current government regulations as water companies are permitted to release untreated sewage into rivers and the sea to prevent "waste" backing up in streets and homes.

So in comparison with other parts of the UK we have two water supply benefits not enjoyed by others

last updated in 2023

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