Monthly Report for September 2009

Weather Summary
Measure	Mean / Sum (anomaly)	Min	Max	Mean Time
Minimum Temperature	11.7 °C (+0.2)	8.5 °C	16.9 °C	07:50
Maximum Temperature	19.3 °C (+0.2)	15.5 °C	27.1 °C	14:39
Mean Temperature	15.1 °C (+0.2)	13.1 °C	20.7 °C
Minimum Humidity	57%	44%	83%	15:41
Maximum Humidity	90%	77%	98%	08:53
Mean Humidity	75%	65%	91%
Minimum Pressure	1019 hPa	993 hPa	1034 hPa	12:48
Maximum Pressure	1024 hPa	1003 hPa	1038 hPa	12:44
Mean Pressure	1022 hPa	998 hPa	1036 hPa
Mean Wind Speed	4.8 mph (+0.9)	1.1 mph	9.8 mph
Maximum Wind Speed	11.3 mph	4.5 mph	19.5 mph
Maximum Gust	17.0 mph	6.4 mph	35.6 mph	12:13
Mean Wind Direction	155° [SSE]	n/a	315° [NW]
Rainfall	35.9 mm (72%)	0.0 mm	25.5 mm
Maximum Hourly Rain	3.8 mm	0.5 mm	7.4 mm	15:59
Maximum 10-min Rain	1.5 mm	0.5 mm	3.3 mm	15:50
Maximum Rain Rate	18 mm/h	3.8 mm/h	33 mm/h	18:19
Minimum Dew Point	8.1 °C	4.9 °C	10.9 °C	10:17
Maximum Dew Point	12.8 °C	9.3 °C	17.8 °C	11:27
Mean Dew Point	10.4 °C	7.4 °C	15.2 °C
Night Minimum (21-09)	11.9 °C	8.5 °C	16.9 °C
Day Maximum (09-21)	19.3 °C	15.5 °C	27.1 °C
Max 10m Temp Rise	0.9 °C	0.4 °C	1.8 °C	12:44
Max 1hr Temp Rise	1.5 °C	1.1 °C	1.9 °C	12:42
Max 1hr Hum Rise	9%	4%	17%	14:29
Max 10m Temp Fall	0.7 °C	0.4 °C	1.4 °C	12:32
Max 1hr Temp Fall	1.3 °C	0.8 °C	1.9 °C	14:29
Max 1hr Hum Fall	10%	3%	15%	13:13
Max 10m Wind Speed	7.9 mph	2.9 mph	13.7 mph	12:38
Minimum Feels-like	12.2 °C	0.9 °C	21.4 °C	07:56
Maximum Feels-like	21.4 °C	17.1 °C	30.8 °C	14:09
Mean Feels-like	16.6 °C	13.5 °C	24.9 °C	n/a
Air-frost Hrs	0 hrs	0 hrs	0 hrs
Minimum PM2.5	0.0 µg/m³	0.0 µg/m³	0.0 µg/m³
Maximum PM2.5	n/a	n/a	n/a
Mean PM2.5	n/a	n/a	n/a
Temperature Range	7.6 °C (+0.0)	1.9 °C	11.9 °C
Humidity Range	33%	12%	50%
Pressure Range	5 hPa	2 hPa	16 hPa
Sun Hours	129 (88%) [38%]
Wet Hours	17 (41%) [2.4%]

NB: Hover over a value to see how many days of data it is from. Sun hrs, Wet hrs, Cloud cover and Events are based on manual observation and provided for interest only.

Days Of...
Rainfall		Temperature		Sunshine		Other
> 0.0 mm	5	Min < -5.0 °C	0	> 0 hrs	27	Falling Snow	0
> 0.1 mm	5	Min < 0.0 °C	0	> 1 hrs	21	Lying Snow	0
> 0.3 mm	3	Mean < 0.0 °C	0	> 3 hrs	17	Hail	0
> 1.0 mm	2	Mean > 20.0 °C	1	> 5 hrs	11	Thunder	0
> 5.0 mm	2	Max > 25.0 °C	1	> 10 hrs	0	Dense Fog	0
> 10.0 mm	1	Max > 30.0 °C	0	> 25% max poss.	19	Gusts > 30mph	1
> 20.0 mm	1	Min > 20.0 °C	0	> 95% max poss.	0	Total Events	1

Misc.

Mean rainfall for days with >0.3mm: 12.0 mm
Total snowfall: 0.0 mm

Graphs and Charts

Mean Temperature

Variable

Measure

View more charts for this month

Intraday conditions

Per-minute readings across the month (downsampled for display). Choose a variable below.

Wind rose

Daily breakdown

Day numbers link to the detailed daily report. Wide tables can be scrolled horizontally.

Temperature, rain, sunshine & wind

Day	Tmin	Tmax	Tmean	Rain	Hr max	10m rain	Rate	Sun	Wmean	Wmax	Gust	Wdir	W10m
1	14.7	20.7	16.8	0.3	-	-	-	7	6.3	17.3	35.6	225°	11.6
2	13.3	17.3	14.9	9.3	3.6	0.8	16	1	5.2	13.8	20.8	180°	9.0
3	12.0	18.0	14.8	0.5	0.5	0.5	3.8	4	9.8	19.5	29.1	270°	13.6
4	10.3	18.0	13.9	0.0	-	-	-	7	7.4	18.1	27.5	270°	13.7
5	10.4	19.0	14.3	0.0	-	-	-	5	5.6	11.4	19.0	270°	8.7
6	13.1	19.3	15.3	0.0	-	-	-	4	4.8	10.7	15.4	225°	8.0
7	14.3	20.3	17.2	0.0	-	-	-	0	4.1	9.2	12.5	225°	6.7
8	16.9	27.1	20.7	0.0	-	-	-	9	5.9	11.4	18.6	225°	8.7
9	12.0	18.2	15.9	0.0	-	-	-	1	5.4	13.0	16.8	0°	8.6
10	9.3	19.1	13.8	0.0	-	-	-	6	5.3	12.7	17.4	45°	8.4
11	9.8	19.7	14.5	0.0	-	-	-	7	5.2	11.5	15.2	45°	7.5
12	11.5	22.1	15.7	0.0	-	-	-	10	4.0	10.4	14.0	45°	9.0
13	10.3	16.3	13.2	0.0	-	-	-	0.1	4.9	13.0	22.6	0°	10.0
14	12.4	19.1	14.8	0.0	-	-	-	1	7.5	14.5	23.3	0°	10.1
15	13.6	15.5	14.4	25.5	7.4	3.3	33	0	7.2	19.4	26.2	0°	10.7
16	12.1	18.9	14.9	0.3	-	-	-	5	7.6	14.3	23.0	45°	10.0
17	11.3	16.5	13.6	0.0	-	-	-	0.1	6.0	11.5	17.7	45°	9.0
18	10.1	19.8	14.4	0.0	-	-	-	7	4.5	10.3	15.4	45°	8.0
19	12.3	22.4	16.7	0.0	-	-	-	3	2.2	6.3	8.7	45°	5.0
20	13.3	19.6	16.1	0.0	-	-	-	2	3.2	8.5	11.0	0°	5.5
21	11.1	20.3	15.1	0.0	-	-	-	5	4.0	10.1	15.4	225°	7.7
22	11.5	19.8	15.8	0.0	-	-	-	3	6.0	12.3	17.7	225°	7.6
23	14.3	17.9	16.3	0.0	-	-	-	0	4.3	8.9	13.4	270°	6.3
24	10.7	18.9	14.3	0.0	-	-	-	8	2.7	7.4	10.5	315°	4.8
25	8.6	19.9	13.6	0.0	-	-	-	10	2.0	7.4	9.8	270°	4.8
26	8.5	19.6	13.1	0.0	-	-	-	8	1.1	4.5	6.4	315°	2.9
27	9.0	20.9	13.7	0.0	-	-	-	10	1.7	6.4	9.8	0°	4.2
28	11.4	18.2	14.5	0.0	-	-	-	2	2.9	9.7	13.0	270°	6.3
29	10.8	20.1	15.0	0.0	-	-	-	4	3.3	8.5	13.2	270°	5.3
30	12.7	17.2	15.3	0.0	-	-	-	1	2.6	7.6	10.5	270°	6.0

Humidity, dew point & pressure

Day	Hmin	Hmax	Hmean	Dmin	Dmax	Dmean	Pmin	Pmax	Pmean
1	45	84	65	7.2	12.3	10.0	1003	1010	1006
2	69	96	83	10.0	14.3	12.1	995	1011	1003
3	47	95	69	5.8	14.3	8.9	993	1003	998
4	44	90	67	4.9	9.3	7.4	1003	1016	1010
5	48	86	70	7.4	10.2	8.6	1016	1024	1020
6	48	77	68	7.2	10.8	9.3	1019	1025	1022
7	76	88	82	10.6	16.1	14.0	1017	1020	1018
8	44	94	73	10.8	17.8	15.2	1017	1021	1019
9	49	82	65	5.4	15.0	9.1	1021	1033	1027
10	52	90	71	5.8	11.0	8.2	1033	1038	1036
11	55	94	74	7.7	12.3	9.6	1034	1038	1036
12	49	92	72	8.6	12.9	10.4	1028	1034	1031
13	64	94	79	8.2	11.8	9.5	1027	1029	1028
14	56	84	73	8.4	12.4	9.8	1023	1028	1026
15	83	98	91	10.9	14.4	13.0	1019	1024	1022
16	59	98	82	8.7	14.1	11.5	1021	1024	1022
17	57	84	70	6.8	9.4	8.1	1021	1023	1022
18	62	89	76	7.1	13.1	10.2	1016	1022	1019
19	65	93	80	10.4	16.2	13.1	1015	1018	1016
20	55	84	73	8.0	14.0	11.1	1018	1026	1022
21	44	91	70	6.5	11.4	9.2	1024	1027	1026
22	66	90	79	9.7	13.9	12.0	1023	1026	1024
23	73	91	80	10.2	14.2	12.9	1025	1027	1026
24	51	89	70	6.9	10.6	8.7	1025	1027	1026
25	47	88	69	6.2	9.8	7.7	1026	1028	1027
26	51	89	74	6.4	10.8	8.2	1026	1029	1028
27	55	92	78	6.8	12.9	9.7	1027	1029	1028
28	64	91	79	9.4	12.2	10.9	1024	1028	1026
29	66	95	81	9.9	13.9	11.7	1021	1024	1022
30	74	88	82	10.1	13.4	12.2	1017	1022	1020

Other measures

Day	Night	Daymax	T+10m	T+1h	H+1h	T-10m	T-1h	H-1h	Fmin	Fmax	Fmean	AQmin	AQmax	AQmean
1	14.7	20.7	-	-	-	-	-	-	16.3	23.7	18.1	-	-	-
2	13.3	17.3	0.4	1.2	12	0.5	1.5	10	14.6	20.3	17.3	-	-	-
3	13.4	18.0	1.8	1.9	17	1.4	1.9	15	12.3	18.6	15.6	-	-	-
4	10.3	18.0	0.5	1.6	8	0.4	1.0	11	11.0	18.0	14.1	-	-	-
5	10.4	19.0	1.3	1.6	7	1.2	1.2	10	10.7	19.4	15.0	-	-	-
6	13.1	19.3	0.5	1.8	7	0.4	1.3	10	13.8	20.0	16.3	-	-	-
7	14.3	20.3	0.7	1.1	4	0.4	0.8	3	16.2	25.0	20.7	-	-	-
8	16.9	27.1	-	-	-	-	-	-	21.4	30.8	24.9	-	-	-
9	13.8	17.8	-	-	-	-	-	-	12.0	22.1	16.9	-	-	-
10	9.3	19.1	-	-	-	-	-	-	7.3	20.2	14.1	-	-	-
11	9.8	19.7	-	-	-	-	-	-	8.2	22.0	15.7	-	-	-
12	11.5	22.1	-	-	-	-	-	-	12.6	24.1	17.1	-	-	-
13	10.3	16.3	-	-	-	-	-	-	11.0	17.6	14.2	-	-	-
14	12.4	19.1	-	-	-	-	-	-	13.2	20.7	16.0	-	-	-
15	13.6	15.5	-	-	-	-	-	-	15.3	18.6	17.2	-	-	-
16	13.0	18.9	-	-	-	-	-	-	13.0	20.9	16.9	-	-	-
17	11.3	16.5	-	-	-	-	-	-	11.6	17.1	14.0	-	-	-
18	10.1	19.8	-	-	-	-	-	-	10.4	22.6	15.8	-	-	-
19	12.3	22.4	-	-	-	-	-	-	14.0	27.0	19.7	-	-	-
20	13.3	19.6	-	-	-	-	-	-	14.7	22.3	17.9	-	-	-
21	11.1	20.3	-	-	-	-	-	-	11.9	20.8	15.9	-	-	-
22	11.5	19.8	-	-	-	-	-	-	12.6	22.9	18.0	-	-	-
23	14.3	17.9	-	-	-	-	-	-	16.1	20.8	19.1	-	-	-
24	10.7	18.9	-	-	-	-	-	-	11.4	19.8	15.0	-	-	-
25	8.6	19.9	-	-	-	-	-	-	0.9	20.6	13.9	-	-	-
26	8.5	19.6	-	-	-	-	-	-	8.5	20.9	13.5	-	-	-
27	9.0	20.9	-	-	-	-	-	-	7.7	23.3	14.6	-	-	-
28	11.4	18.2	-	-	-	-	-	-	12.5	20.1	16.2	-	-	-
29	10.8	20.1	-	-	-	-	-	-	12.0	23.3	16.8	-	-	-
30	12.7	17.2	-	-	-	-	-	-	14.0	19.9	17.7	-	-	-

View daily report for the 1st