Given below, are the final September statistics for Edinburgh, Gogarbank from all of the data which I have available which are:

Temperature (°C):

Lowest Min: 3.1 (on 8/9)
Highest Min: 13.9 (on 3/9)
Mean Min: 9.6
Min. Anomaly: +0.4

Lowest Max: 13.7 (on 27/9)
Highest Max: 21.6 (on 21/9)
Mean Max: 16.9
Max. Anomaly: +0.3

Ave. Temp.: 12.9
Temp. Anomaly: 0.0

Air Frosts: 0 (0.0% of 1981-2010 average)

Rainfall (mm):

Total for Month: 82.6 (142.4% of 1981/2010 average)
Wettest Day: 17.6 (on 22/9)
Rain Days: 13 (125.0% of 1981/2010 average)
Dry Days: 12
Longest Dry Spell: 7 days (15/9 to 21/9 inclusive)
Highest Number of Days without a single dry day: 6 days (22/9 to 27/9 inclusive)

Sunshine Totals (hrs):

Total For Month: 121.5 (96.8% of 1981-2010 average)
Sunniest Day: 11.4 (on 21/9)
Sunless Days: 4

Conclusion:

Overall, September was a very boring and uneventful month with the only real highlight being a brief spell of summer-like weather at the beginning of the second half of the month.

It was a slightly warmer than month overall, but without any significant deviation from the long term averages and if I had gone by the much overall 1961-1990 average here, September might even have come out as slightly colder than average overall.

Unlike in many other parts of the UK, September wasn't as wet here as any of the summer months which preceded it. Indeed, the number of official rain days during September was only very slightly above average overall. However, it was still a wetter than average month overall in terms of the actual rainfall amounts which means that we still haven't had a drier than average month here since April.

In fact, the only reason why this month wasn't as wet as other recent months has been due to the more southerly displacement of the jet stream at times, which has recently resulted in us virtually missing out altogether on quite a major rain event which hit England and Wales, and caused quite a few flooding and other issues down there (a huge difference from what it was like not too long ago when a lot of people were worried about possible water shortages due to a prolonged lack of rainfall).

The fact that the number of official rain days has been not much more than average means that it hasn't really rained much more often than normal during September. However, we have had some quite big downpours at times which have produced some fairly large totals, and that is why it's been wetter than average in terms of the actual rainfall amounts.

For so much of this month, it had looked virtually certain that this month would be significantly sunnier than average. However, the last week or so has been much duller, and this was enough in the end to result in this month being slightly duller than average overall. However, I can report that once the data for botanic gardens has been reported on here, this will show September to be a bit sunnier than average which means that the sunshine totals across Edinburgh as a whole, can really be considered as being around average overall.

 

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Average temperature = 12.3°C; diff from climate av: -0.0°C
Average humidity = 72%
Average dewpoint = 7.3°C
Average barometer = 1015.4 mb
Average windspeed = 7.2 mph
Average gustspeed = 10.2 mph
Average direction = 250° (WSW)
Rainfall for month = 89.2 mm (+23mm)
Rainfall for year = 578.1 mm (-18mm)
Maximum rain per minute = 1.7 mm on day 24 at time 11:47
Maximum temperature = 23.7°C on day 22 at time 14:01
Minimum temperature = 0.8°C on day 18 at time 03:42
Maximum humidity = 79% on day 07 at time 21:53
Minimum humidity = 52% on day 21 at time 14:46
Maximum dewpoint = 16.6°C on day 22 at time 14:20
Minimum dewpoint = -3.0°C on day 18 at time 3:42
Maximum pressure = 1037.1 mb on day 13 at time 21:29
Minimum pressure = 992.9 mb on day 29 at time 07:53
Maximum windspeed = 26.5 mph from 248°(WSW) on day 15 at time 03:09
Maximum gust speed = 36.8 mph from 338°(NNW) on day 05 at time 00:15
Maximum heat index = 25.1°C on day 21 at time 14:21
Avg daily max temp :16.5°C
Avg daily min temp :8.4°C
Growing degrees days :108.3 GDD
Total windrun = 4711.1miles
-----------------------------------
Daily rain totals
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01.3 mm on day 1
00.9 mm on day 2
03.5 mm on day 4
00.6 mm on day 5
00.2 mm on day 6
00.6 mm on day 7
01.5 mm on day 9
02.2 mm on day 11
01.7 mm on day 12
00.4 mm on day 15
05.2 mm on day 22
03.0 mm on day 23
20.5 mm on day 24
01.7 mm on day 25
08.4 mm on day 26
03.2 mm on day 27
02.8 mm on day 28
22.0 mm on day 29
09.3 mm on day 30

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Given below, are the final September statistics for the botanic gardens in Edinburgh from all of the data which I have available which are:

Temperature (°C):

Lowest Min: 6.0^* (on 16/9)
Highest Min: 13.9^* (on 3/9)
Mean Min: 10.1^*
Min. Anomaly: +0.7^*

Lowest Max: 12.2^* (on 7/9)
Highest Max: 20.4^* (on 21/9)
Mean Max: 16.7^*
Max. Anomaly: +0.2^*

Ave. Temp.: 13.4

Temp. Anomaly: +0.4

^*Highest And Lowest Temperatures are based on Highest and Lowest Hourly reading, and not the actual minimum and maximum temperatures as I don't actually have those values available.

Rainfall (mm):

Total for Month: 79.4 (124.6% of 1981/2010 average)
Wettest Day: 20.8 (on 22/9)
Rain Days: 11 (107.8% of 1981/2010 average)
Dry Days: 10
Longest Dry Spell: 6 days (15/9 to 20/9 inclusive)
Highest Number of Days without a single dry day: 10 days (21/9 to 30/9 inclusive)

Sunshine Totals (hrs):

Total For Month: 141.4 (109.8% of 1981-2010 average)
Sunniest Day: 11.7 (on 7/9)
Sunless Days: 3

Conclusion:

Slightly warmer and sunnier than average overall but also wetter than average, especially in terms of the actual rainfall amounts. As with Edinburgh Gogarbank though, September wasn't as wet as August although it was still wetter than average.

 

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