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SEPTEMBER 2017 daily and monthly summary

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SEPTEMBER 2017
October

   DAILY STATS SEPTEMBER 2017
 
TEMPERATURE ºc
HUMIDITY
SUN ‡
PRESSURE
RAINFALL
WIND SPEED
DIRECTION
 WEATHER
 NOTES
DATE
Low
(21-09h)
High
(09-21h)
Temp at 14.00z
RH %
at 14.00z
Dewpoint ºc
at 14.00z
Bright
sun hrs
hPa   †
at 14.00z
Day Total
(mm)
Average
(mph)
Max Gust
(mph)
Dominant
(Compass)
 Precipitation
 type etc ‡
                       
1st
7.7 21.0 19.7 51 9.3 6.6 1021.1 FS 0.2 0.5 8 N  Fog am
2nd
9.2 21.5 19.8 51 9.4 10.2 1021.4 FS 1.2 0.5 5 ESE  Rain shwr night am
3rd
8.4 18.8 16.8 56 8.0 0.6 1012.2 FS 0.6 1.2 10 SW  Rain eve.
4th
12.9 20.6 19.7 87 17.4 0.1 1012.9 RS 0.8 1.3 11 SSW  Rain night am
5th
15.9 19.1 19.0 81 15.7 0.2 1013.2 FS 1.4 2.7 15 SSW  Drizzle pm
6th
11.4 18.9 18.6 56 9.6 4.5 1019.1 ST 0.0 1.8 13 SSW  Sunny spells
7th
11.1 19.0 18.3 69 12.5 4.0 1013.2 F 0.0 2.3 16 SSW  Cloudy
8th
13.9 15.9 15.2 93 14.1 0.1 998.3 F 7.0 3.1 17 SSW  Rain
9th
9.5 18.4 18.3 56 9.3 7.0 997.3 FS 0.4 1.8 13 SSW  Rain shower pm
10th
7.4 16.5 16.0 77 12.0 3.6 998.5 F 3.2 3.1 21 SSW  Rain pm
11th
11.0 18.3 18.2 67 11.9 4.2 994.0 RS 1.0 4.0 21 SSW  Rain showers pm
12th
9.8 18.5 17.5 57 8.9 7.8 1007.6 ST 2.6 3.1 16 SSW  Rain night pm
13th
12.7 17.9 17.2 62 9.9 6.1 1001.1 FS 1.8 4.8 25 SSW  Rain shower pm
14th
7.0 17.4 15.9 63 8.9 4.2 1010.3 R 1.6 2.0 14 SSW  Rain shower pm
15th
7.1 16.7 16.3 59 8.3 5.6 1012.0 FS 0.4 1.2 10 N  Rain shower pm
16th
7.2 15.7 14.2 78 10.4 2.1 1010.6 FS 0.2 0.7 10 SSW  Rain shower pm
17th
7.3 17.0 15.5 70 10.0 1.5 1013.3 ST 0.0 0.4 7 N  Cloudy
18th
9.5 16.8 16.3 64 9.5 1.8 1017.1 ST 0.4 1.0 11 N  Rain shower pm
19th
8.6 16.3 15.0 66 8.7 4.8 1022.1 ST 4.0 0.7 8 N  Rain night am
20th
6.1 16.5 14.9 86 12.6 2.0 1019.2 FS 0.0 0.9 10 SW  Cloudy
21st
10.8 18.9 18.3 67 12.0 3.0 1015.2 ST 0.6 1.7 13 SW  Rain pm
22nd
6.1 18.1 17.6 54 8.1 10.6 1021.8 ST 0.2 1.2 10 SSW  Sunny
23rd
9.2 19.5 18.4 56 9.4 3.0 1021.9 FS 0.0 0.6 9 SE  Cloudy
24th
8.4 21.2 20.8 54 11.1 8.5 1019.2 FS 0.2 0.7 10 ESE  Sunny periods
25th
13.6 17.6 17.2 84 14.4 0.0 1019.5 RS 1.4 0.1 4 ESE  Rain
26th
13.3                        
27th
                         
28th
                         
29th
                         
30th
                         
                         
‡ SUN: Sushine hours are calculated approximately from solar radiation and sky brightness readings, but note that the solar sensor's exposure to sunshine during this month is limited to early afternoon. The sensors receive less than 30% of total possible sunshine exposure this month. Visual observations are made for the remainder of the daylight hours.
† Barometer trend (previous 3 hours) : F = falling, ST = steady, R = rising; Q = quickly, S = slowly

1st
HP 1030 hPa Azores ridging NE. Early fog clears just after 08.00 to give day of sunny spells.
2nd
Rain shower shortly after midnight. A sunny start with cloud developing by mid-morning but still some long sunny spells especially in the afternoon.
3rd
A bright but misty start with a couple of sunny intervals, becoming cloudy by mid-morning and quickly overcast. Light rain and drizzle arrives from the west in early evening.
4th
LP 973 hPa SSW of Iceland. Drizzle in the early hours. An overcast and dull day except for a brief bright moment at midday.
5th
LP 982 hPa S of Iceland. Overcast and very dull start to the day, again brightening briefly at noon but turning dull again soon after with intermittent drizzle in the afternoon and early evening.
6th
A fairly bright day with some short sunny spells but also rather cloudy at times.
7th
Generally rather cloudy with a few short sunny spells and intervals.
8th
LP 989 hPa Northern Scotland. Some light rain just before sunrise followed by a dull and overcast morning with some drizzle then a spell of rain, very heavy at times in the middle of the day into early afternoon. Brightening very briefly in late afternoon.
9th
LP 993 hPa North Sea. A bright day with some sunny spells and a rain shower in late afternoon.
10th
LP 974 hPa W of Outer Hebrides. A little misty at first but bright morning with sunny spells. Increasingly cloudy through late morning and overcast in the afternoon with a short spell of drizzle at first followed by rain in the evening.
11th
LP 977 hPa Orkney. Cloudy and very breezy in the morning with some sunny spells continuing into the afternoon. A couple of brief but heavy rain showers in late afternoon/early evening.
12th
LP 993 hPa W of Ireland. A bright day with plenty of sunny spells, becoming cloudy in late afternoon. Rain arrives from the west in early night continuing until just after midnight.
13th
LP 978 hPa W of Denmark. Early cloud clears to give some long sunny spells, with a short but heavy rain shower in mid-afternoon. Clearing to give more sunshine. Very windy in the morning gradually easing later in the day.
14th
Early sunshine gives way to cloud by mid-morning. A few sunny intervals and short sunny spells interrupted by a brief but very heavy rain shower in late afternoon.
15th
LP 987 hPa Finland, HP 1031 hPa NE of Azores. Once again a bright start but becoming more cloudy in late morning. Sunny spells interrupted by a short rain shower in mid-afternoon.
16th
LP 1007 hPa Denmark, HP 1025 hPa NE of Azores. Hazy at first clearing to give a sunny spell in mid-morning. Increasing cloud cover from late morning with the usual short rain shower in mid-afternoon.
17th
Overcast and dull until a little after midday when sky clears to give a few short sunny spells. Becoming rather cloudy again in late afternoon.
18th
Overcast and rather dull until late morning. Some short sunny spells in the afternoon but more cloudy again from late afternoon with a rain shower.
19th
A spell of rain, heavy at first, just after midnight with some drizzle dying out by sunrise. Becoming bright after a cloudy start, with sunny spells especially in the afternoon.
20th
A little early brightness but clouding over by mid-morning for a long period. Clearing a little to give a spell of brightness for late afternoon / early evening.
21st
A bright start, becoming more cloudy through the day with a short spell of light rain in late afternoon.
22nd
LP 1006 hPa Northern Ireland, HP 1025 hPa Biscay. A mainly sunny day with just a few patches of cloud during the afternoon.
23rd
LP 964 hPa S of Iceland. After a cloudy start brightening in mid-moring to give a sunny spell but clouding over again by mid-afternoon.
24th
Mainly bright and sunny day but clouding over from late-afternoon.
25th
LP 1017 hPa N France. An overcast and rather dismal day with intermittent light rain or drizzle in the morning and late afternoon.