Bristol Weather Station

Totterdown, Bristol, UK.

For further information e-mail  Barry (change the "AT")




June 2020: The rainfall in June was nearly double the 30 year average (1981-2010) at 116.8 mm, 199.7% of the average. The 4 days of the 17th, 18th, 26th and 27th recorded 81.0 mm of rain which represents 69.3% of the month's total. It was the wettest June since 2012 when 181.0 mm fell.
The 24 hour maximum rainfall of 29.1 mm on the 17th June 2020 was the highest since 1985 when in one 24 hour period 42.8 mm was recorded in June.

The average temperature for the month was 17.0C which is just above the 30 year average at +0.7C. The maximum temperature of 33.0C recorded on the 25th was the 2nd highest for June since records began in 1937. The highest daily maximum temperature for June is 33.5C recorded in 2017. The highest daily minimum temperature of 20.2C on the 26th was the highest for June since this data started in Bristol in 1960.
The highest daily mean temperature of 25.6C recorded on the 25th was the 2nd highest since this data started in 1993. The highest is 26.1C on June 21st 2017.

The average June pressure of 1012 mb was the lowest since 1010 mb in June 2012. The highest pressure of 1024.2 mb on the 22nd was the lowest for the month since 1020.4 mb was recorded on 23rd June 2012.
June 2020 was close to the average for sunshine but the maximum hourly sunshine of 999.17 W/m2 at 12:00 on the 15th was the highest for June since 1006.7 W/m2 was recorded on 10th 2014.

The 2019 Annual summary is here:

For the full monthly summary please go here:

The Meteorological site is situated in an urban housing area approximately one mile to the south of the Centre of Bristol. This area is in a district called Totterdown.

Statistical correlations with the Bristol Meteorological Office site, that was less than two miles to the North and was situated on top of a City Centre office block, were generally good with rainfall and barometric data particularly close.

The site of the station is approximately 34 metres above sea level with the manual instruments mounted in a Stevenson screen. The screen is sited centrally in a small concreted garden area. A Snowdon rain gauge is mounted correctly in the ground but does not have the full open space required around it. A  Davis Vantage Pro2 Plus automatic weather station (AWS) was added in May 2005 and this is mounted 4 feet above a concrete shelter. The wind data is gathered automatically from a Davis Vantage Pro2 Plus anemometer which is sited 3.3 metres (10 feet) above the house top.

Manual observations are still taken at approximately 09:00 hours GMT every day for rainfall and cloud cover. Rainfall manually recorded in the Snowdon rain gauge is entered for the previous day. The wind data is constantly logged and automatically reset at 24:00 hours GMT every day (in the summer BST -1 hour. The Davis rainfall tipping bucket was recalibrated in November 2005 and is now consistently under 3% under recording (an improvement from installation in May 2005 when 10% was more typically the norm).

Since the arrival of the Davis Vantage Pro2 Plus equipment in May 2005 temperatures, humidity and barometric pressure are recorded from the new equipment. These figures will be more accurate and will be taken at exactly 09:00 GMT (in the summer BST -1 hour) as the data is now logged to a computer.

By default the Davis equipment records every parameter for the 24 hour period 00:00 to 23:59 BST or GMT. Data analysis will enable manual data extraction of temperatures and rainfall to 09:00 GMT (adjusted in the summer). Due to the 0.2 mm (tipping bucket) measurements of precipitation recorded by the Davis equipment the Snowdon rain gauge will still be used due to its greater accuracy (see above).

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