October Warmth

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October Warmth

Postby Nick Gardner » 2014 Oct 19, 18:57

Summer-like warmth today with unbroken sunshine this afternoon continues what is turning out to be another warm month.

Today:
Minimum = 13.9°C
Maximum = 20.1°C
Sunshine = 9.9 hours.

October 1st - 19th:
Mean minimum = 9.8°C
Mean maximum = 17.1°C
Rain = 79.1 mm
Sunshine = 85.2 hours.

Sunshine has suffered lately with quite a few generally cloudy days though there has only been 1 sunless day (14th) so far this month.

October sunshine:
2013 = 119 hours
2012 = 107 hours
2011 = 120 hours
2010 = 164 hours
2009 = 111 hours
2008 = 144 hours
2007 = 128 hours

A long way to go to equal the sunny October of 2010.
Near Newton Poppleford, Sidmouth - Devon
50:41N 3:17 W; 20 metres AMSL; Station Grade B-BAAA37
http://www.ottervalley.co.uk
Nick Gardner
 
Posts: 429
Joined: 2012 Jan 27, 17:25
Location: Rural riverside valley location near the village of Newton Poppleford and 2 km from the sea.

Re: October Warmth

Postby Richard Hunt » 2014 Oct 19, 20:15

MEAN MIN: 9·2°C

MEAN MAX: 15·5°C

MEAN: 12·4°C

(Anomaly +0·8°C)

A nice day today with a screen maximum of 18·4 C, and a maximum this month of 20·5 C on the 3rd.

Rather wet so far with 56·9 mm of rain.
COL Station: 25020.

Watson W-8681 AWS. Standard Stevenson Screen. Maximum and Minimum screen thermometers. Grass minimum thermometer.
5" Copper standard rain gauge. Roof mounted annemometer.
Richard Hunt
 
Posts: 374
Joined: 2012 Jan 27, 19:23
Location: Hornsea, East Yorkshire. 10m AMSL

Re: October Warmth

Postby Nick Gardner » 2014 Oct 20, 19:01

To gain a better context on the 'sunny-ness' of October, I thought I would add in the percentage of possible sunshine (in brackets).

October sunshine:
2013 = 119 hours (36%)
2012 = 107 hours (32%)
2011 = 120 hours (36%)
2010 = 164 hours (49%)
2009 = 111 hours (34%)
2008 = 144 hours (43%)
2007 = 128 hours (39%)

Difficult to compare with an equivalent Spring month as October spans mid-February to mid-March for the same daylight lengths but when compared to March as a whole:

March sunshine:
2014 = 171 hours (46%)
2013 = 94 hours (26%)
2012 = 190 hours (51%)
2011 = 190 hours (51%)
2010 = 156 hours (42%)
2009 = 189 hours (51%)
2008 = 132 hours (36%)
2007 = 149 hours (40%)

March does have more daylight hours than October but (since 2007) when the percentages of that daylight are taken into consideration, October is a duller month with an average of 38% of the available sunshine whereas March receives an average of 43%. Given the longer day length for the second half of March, this represent a significant difference in the amount of daily sunshine. No wonder March feels like a fairly sunny month, especially after enduring the winter. Cold sea surface temperatures in March are probably one of the contributing factors to the extra sunshine.

I always consider that anything less than 40% of the available sunshine is getting into the dull category whereas above 50% and it is into the sunny category. Since 2007, percentages of available sunshine seem to peak during the April to June period. Surprisingly February stands alone in being the 'dullest' month relative to available sunshine though given the short sampling period this will probably change.
Near Newton Poppleford, Sidmouth - Devon
50:41N 3:17 W; 20 metres AMSL; Station Grade B-BAAA37
http://www.ottervalley.co.uk
Nick Gardner
 
Posts: 429
Joined: 2012 Jan 27, 17:25
Location: Rural riverside valley location near the village of Newton Poppleford and 2 km from the sea.

Re: October Warmth

Postby Len Wood » 2014 Oct 21, 22:20

Thanks Nick.
Interesting sunshine figures.
March is a sunnier month that October here judging by the output from my solar panels.
I only have the last 3 years to go by mind you.
Len

Wembury, SW Devon coast
N50.33 W4.13
Altitude 83 m asl
Len Wood
 
Posts: 349
Joined: 2012 Jan 28, 16:12
Location: Wembury, coastal SW Devon, 83 m asl

Re: October Warmth

Postby Nick Gardner » 2014 Oct 27, 19:31

The warmth continues though there has been a marked drop in sunshine levels over the last 5 days.

1st - 27th Oct
Mean minimum = 10.0°C
Mean maximum = 16.6°C
Mean = 13.3°C
Rain = 79.1 mm
Sunshine = 103 hours.

This October is turning out to be the warmest since...... 2013! Last year's October was warmer but much wetter (153 mm).

October mean temperature:
2013 = 13.8°C
2012 = 11.6°C
2011 = 13.6°C
2010 = 11.3°C
2009 = 12.3°C
2008 = 10.7°C
2007 = 11.7°C
2006 = 13.1°C

October of 2008 stands out a real cold one.
Near Newton Poppleford, Sidmouth - Devon
50:41N 3:17 W; 20 metres AMSL; Station Grade B-BAAA37
http://www.ottervalley.co.uk
Nick Gardner
 
Posts: 429
Joined: 2012 Jan 27, 17:25
Location: Rural riverside valley location near the village of Newton Poppleford and 2 km from the sea.

Re: October Warmth

Postby Graham Easterling » 2014 Oct 30, 17:23

The warmth continues though there has been a marked drop in sunshine levels over the last 5 days.

1st - 27th Oct
Mean minimum = 10.0°C
Mean maximum = 16.6°C
Mean = 13.3°C
Rain = 79.1 mm
Sunshine = 103 hours.

October mean temperature:
2013 = 13.8°C
2012 = 11.6°C
2011 = 13.6°C
2010 = 11.3°C
2009 = 12.3°C
2008 = 10.7°C
2007 = 11.7°C
2006 = 13.1°C.



In Penzance 1st - 29th
Mean minimum = 11.0°C
Mean maximum = 16.4°C
Mean = 13.7°C
Rain = 110.2 mm

The mean temperature for 2013 was 13.9. The last 2 Octobers were particularly wet 197.9mm & 194.7mm respectively.

October mean temperature:
2013 = 13.9°C
2012 = 11.9°C
2011 = 13.4°C
2010 = 12.1°C
2009 = 13.3°C
2008 = 11.8°C
2007 = 13.4°C
2006 = 14.3°C

Interesting that my mean temperatures are similar to yours since 2011, but are much higher for earlier years.

When did you move to your present site Nick?
Last edited by Graham Easterling on 2014 Nov 01, 14:15, edited 1 time in total.
Graham

Penzance Weather Station
Grid Ref:
SW464231 - Post Code: TR18 4TP
19m AMSL - Aspect SSE
In a SE - NW orientated valley

23 Years of Penzance Weather Records : http://penzanceweather.atspace.com/weather.html
Graham Easterling
 
Posts: 316
Joined: 2011 Nov 30, 20:29
Location: Penzance, Cornwall

Re: October Warmth

Postby Richard Hunt » 2014 Oct 30, 21:27

October mean temperatures:
2013 = 13·4°C
2012 = 09·2°C
2011 = 12·3°C
2010 = 11·0°C
2009 = 11·4°C
2008 = 09·2°C
2007 = 11·7°C
2006 = 12·5°C
2005 = 13·7°C

Mean October 2014 temperature so far: 12·4°C. Anomaly + 0·8°C.
COL Station: 25020.

Watson W-8681 AWS. Standard Stevenson Screen. Maximum and Minimum screen thermometers. Grass minimum thermometer.
5" Copper standard rain gauge. Roof mounted annemometer.
Richard Hunt
 
Posts: 374
Joined: 2012 Jan 27, 19:23
Location: Hornsea, East Yorkshire. 10m AMSL

Re: October Warmth

Postby Nick Gardner » 2014 Oct 31, 11:17

Interesting that my mean temperatures are similar to yours since 2011, but are much higher for earlier years.

When did you move to your present site Nick?


Graham, I moved to my present location in November 2011. The previous location was 6 kms inland, up the valley and was 80 metres amsl.
Near Newton Poppleford, Sidmouth - Devon
50:41N 3:17 W; 20 metres AMSL; Station Grade B-BAAA37
http://www.ottervalley.co.uk
Nick Gardner
 
Posts: 429
Joined: 2012 Jan 27, 17:25
Location: Rural riverside valley location near the village of Newton Poppleford and 2 km from the sea.

Re: October Warmth

Postby Len Wood » 2014 Oct 31, 20:20

October has certainly turned out to be a warm month but not unusually so.

Mean max 16.0 C
Mean min 11.5 C

Other recent warm Octobers:

2001 Max 16.3 min 12.0

2005 Max 16.7 min 11.3

2013 Max 16.1 min 11.3
Len

Wembury, SW Devon coast
N50.33 W4.13
Altitude 83 m asl
Len Wood
 
Posts: 349
Joined: 2012 Jan 28, 16:12
Location: Wembury, coastal SW Devon, 83 m asl

Re: October Warmth

Postby Stephen Burt » 2014 Oct 31, 22:06

A remarkably warm end to October in the south-east.

Yesterday we reached 18.5°C, despite only 1.4 hours sunshine. The 09-09h min this morning was 11.8 °C, not far below the mean for July or August.

Despite persistent high cloud, today's screen maximum was 21.5°C. The previous latest date since local daily records commenced in 1959 (55 years) when the screen max has reached or exceeded this figure has been 18 October (21.9 °C in 1997) – almost two weeks earlier. The daily mean max for 31 October over 1981-2010 was 12.8°C, and over the period 1959 to 2013 maxima ranged from 7.4 °C (in 1974) to 18.0 °C (in 2009), demonstrating how far from the norm today's extreme was.

According to the BBC News website, Gravesend and Kew Gardens both reached 23.6°C today. I wouldn't put any faith at all in the Gravesend figure as being representative, but the Kew Gardens site, although poorly maintained, is at least well-exposed (assuming at least a food merchandising tent, complete with gas cooking stoves, has not been sited immediately adjacent to the enclosure this half-term, as happened last summer).

SB
-----
Stratfield Mortimer, Berkshire - central southern England
51.4°N, 1.0°W, 60 m AMSL, station grade A - AAAA47R
Records commenced here 1987 - local records available back to 1862
The Weather Observer's Handbook: www.measuringtheweather.com
Stephen Burt
 
Posts: 247
Joined: 2011 Dec 02, 19:36
Location: Stratfield Mortimer, Berkshire; a well-exposed rural site, 10 km SW of Reading

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