The UK experienced a warm and wet August this year. Rain intensity was the 4th highest on record which was similar to what was experienced in June & July thus making the 2019 summer the 2nd most stormy summer on record after 2007.
The meteorological year starts in December which is why December appears as the 1st data point in the charts below. More information on the layout of the charts can be found in this post. Points lying between the upper and lower deciles are shown as open black circles, points lying between the deciles and minimum/maximum are shown as solid black circles and any month with a new record is shown as solid black squares.
As I explained in October 2018, the addition of a Temperature Range chart (B) means I update 7 charts every month so I rotate which 6 appear 
in the deck above and plot the 7th as a separate chart here. Since it is summer, Frost (chart G) is shown since that is of least interest in the summer months.
How abnormal was August 2019?
Chart H displays my UK Weather Abnormality Index (Scroll down my May 2019 post for details). The closer to zero this 
index is, the less abnormal and thus more “average” a month is. The higher it is, the more abnormal the month is. When the index is over 100%, we can describe the month as unusual in some way.
The abnormality index was 83% in August 2019 but this does not mark the month out as exceptional.
Regional Variations
August marks the end of the meteorological summer. I do not track regional statistics every month but I do track temperature by season for each region so 
I can update the regional temperature chart below. This shows the Z-Score for each region for the 2019 summer. A Z-Score is simply the regional temperature minus the long term average for that region divided by the long term standard deviation for that region. Doing this, gets around the issue that each region is different on average whereas z-scores all have the same scale, namely number of standard deviations from the mean.
For the UK as a whole, summer 2019 was above average in temperature in all regions with East England & Scotland experiencing the highest temperatures relative to their baselines.
PS: If you bookmark this link, it will be refreshed with the latest month’s data. I usually post the update in the first week of each month.
Click the relevant month to see my other weather trackers. Alternatively click the Weather Tracker hash tag below this post to see a list of all such posts.
- Click here for the latest month.
- 2019 – January, February, March, April, May, June, July, August, September, October, November, December
- 2018 – January, February, March, April, May, June, July, August, September, October, November, December
- 2017 – January, February, March, April, May, June, July, August, September, October, November, December
For analysis of trends by seasons, please click on the relevant season from this list or the Weather Trends hashtag below this post.
- 2019 – Winter, Spring, Summer, Autumn
- 2018 – Winter, Spring, Summer, Autumn
- 2017 – Winter, Spring, Summer, Autumn
