September 2021 was warmer and cloudier but despite higher than average rainfall totals there were fewer "rain days".

High pressure, initially centred over Scotland, brought a week of fine weather to most of the UK at the start of the month. The High drifted East, turning winds more southerly, which allowed warmer air to spread from France producing some very warm temperatures across SW England. This was not to last, however, as Low pressure in the Bay of Biscay moved towards SW England leading to a period of heavy thundery rain. Although a weak ridge of higher pressure developed on the 11th this soon gave way allowing a series of fairly weak weather fronts to bring showery spells of rain across the district for the middle part of the month. High pressure developed again after the 19th and this brought almost a week of mostly fine weather when afternoon temperatures were reliably over 20 Celsius. The High declined after the 26th as a spell of Autumnal wet and windy weather swept across the district.

In terms of statistics:

Rainfall for the month was around 70mm in the Dawlish and Teignmouth area, which was above the long term average (LTA) of about 60mm. There were around 19 dry days (LTA 17), 6 days with rainfall of 1mm or more (LTA 9), 3 days with 10mm or more of rain (LTA 2 ) and one day with over 20mm of rain. Roughly two thirds of the month rain fell on the 27th and 28th, the 28th being the wettest day with over an inch (25mm) in most places. Once again the majority of the rainfall occurred during a relatively few days, the 9th being the other notably wet day.

The temperature for the month averaged out at 16 Celsius which is about a degree above the 30 year average (1981-2010). The lowest value for most parts occurred on the 28th or 29th with temperature lows typically between 6 and 9 Celsius. The warmest values of between, 23 Celsius near the coast and 27 Celsius inland, were recorded on the 6th.

The sea temperature at the Dawlish Wave Buoy was 18 Celsius for most of the month dipping to 17 Celsius at the end of September.

Sunshine was a little below average with around 150 hours compared to the average of 161 hours.