Monthly Report for January 2011

Weather Summary
Measure	Mean / Sum (anomaly)	Min	Max	Mean Time
Minimum Temperature	2.8 °C (-0.2)	-0.9 °C	11.4 °C	13:22
Maximum Temperature	6.9 °C (-0.9)	1.2 °C	13.3 °C	12:16
Mean Temperature	5.1 °C (-0.6)	0.5 °C	12.1 °C
Minimum Humidity	76%	57%	94%	15:21
Maximum Humidity	92%	76%	98%	10:14
Mean Humidity	85%	64%	97%
Minimum Pressure	1015 hPa	988 hPa	1038 hPa	12:08
Maximum Pressure	1022 hPa	1003 hPa	1040 hPa	13:44
Mean Pressure	1019 hPa	996 hPa	1039 hPa
Mean Wind Speed	5.4 mph (+0.2)	2.1 mph	10.7 mph
Maximum Wind Speed	13.7 mph	7.4 mph	22.8 mph
Maximum Gust	19.3 mph	8.7 mph	33.1 mph	13:13
Mean Wind Direction	214° [SW]	7° [N]	359° [N]
Rainfall	73.0 mm (124%)	0.0 mm	16.1 mm
Maximum Hourly Rain	2.2 mm	0.3 mm	5.5 mm	11:17
Maximum 10-min Rain	1.1 mm	0.2 mm	3.8 mm	11:01
Maximum Rain Rate	12 mm/h	0.8 mm/h	40 mm/h	11:11
Minimum Dew Point	0.3 °C	-6.5 °C	10.5 °C	13:20
Maximum Dew Point	4.8 °C	-3.8 °C	12.0 °C	10:39
Mean Dew Point	2.7 °C	-5.6 °C	11.3 °C
Night Minimum (21-09)	3.6 °C	-0.9 °C	11.4 °C	07:08
Day Maximum (09-21)	6.6 °C	1.2 °C	13.3 °C	13:39
Max 10m Temp Rise	0.2 °C	0.1 °C	0.4 °C	09:35
Max 1hr Temp Rise	0.8 °C	0.3 °C	1.5 °C	10:15
Max 1hr Hum Rise	4%	1%	10%	14:49
Max 10m Temp Fall	0.3 °C	0.1 °C	0.7 °C	12:17
Max 1hr Temp Fall	0.9 °C	0.3 °C	1.8 °C	13:35
Max 1hr Hum Fall	6%	1%	18%	12:56
Max 10m Wind Speed	9.1 mph	4.7 mph	14.5 mph	13:44
Minimum Feels-like	-0.6 °C	-6.0 °C	12.8 °C	13:09
Maximum Feels-like	6.9 °C	0.2 °C	15.6 °C	12:09
Mean Feels-like	3.4 °C	-3.7 °C	14.0 °C	n/a
Air-frost Hrs	14 hrs	0 hrs	5 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	4.1 °C (-0.7)	1.4 °C	9.5 °C
Humidity Range	16%	4%	30%
Pressure Range	7 hPa	1 hPa	20 hPa
Sun Hours	39 (57%) [17%]
Wet Hours	62 (93%) [8.3%]

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	19	Min < -5.0 °C	0	> 0 hrs	21	Falling Snow	1
> 0.1 mm	17	Min < 0.0 °C	6	> 1 hrs	8	Lying Snow	0
> 0.3 mm	14	Mean < 0.0 °C	0	> 3 hrs	5	Hail	0
> 1.0 mm	10	Mean > 20.0 °C	0	> 5 hrs	3	Thunder	1
> 5.0 mm	7	Max > 25.0 °C	0	> 10 hrs	0	Dense Fog	0
> 10.0 mm	2	Max > 30.0 °C	0	> 25% max poss.	6	Gusts > 30mph	3
> 20.0 mm	0	Ice Days	0	> 95% max poss.	1	Total Events	5

Misc.

Mean rainfall for days with >0.3mm: 5.2 mm
Total snowfall: 0.1 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	3.2	6.6	5.2	0.1	-	-	-	0.1	4.2	10.2	15.4	330°	7.4
2	1.5	3.2	2.3	0.0	-	-	-	1	3.5	7.4	9.4	343°	5.0
3	-0.9	3.3	2.0	0.0	-	-	-	0.5	2.2	7.6	8.7	244°	4.7
4	2.6	5.0	3.6	0.0	-	-	-	0.5	4.9	14.0	17.4	217°	8.0
5	4.1	7.1	5.8	0.8	0.3	-	-	2	7.2	18.5	26.2	203°	12.7
6	1.3	6.8	4.0	10.1	3.3	0.8	4.0	0	2.1	7.4	10.5	318°	6.4
7	0.6	10.1	5.8	9.0	3.3	1.4	30	0.2	4.9	14.0	20.8	136°	9.0
8	2.7	10.0	7.2	3.5	2.2	0.8	15	2	7.5	19.9	33.1	226°	13.3
9	1.5	5.8	3.2	0.0	-	-	-	7	4.2	10.9	15.9	237°	8.1
10	-0.7	8.2	4.9	0.5	0.5	-	0.8	0.3	7.0	19.7	30.0	189°	11.7
11	4.1	7.3	5.5	6.8	2.5	0.5	5	0.2	4.8	16.8	25.5	249°	12.4
12	4.1	12.1	9.1	6.3	1.9	0.3	1.8	0	5.5	13.2	16.8	216°	7.7
13	11.4	13.3	12.1	3.0	1.9	0.5	4.0	0	7.1	16.6	25.9	219°	10.5
14	7.8	11.7	10.5	5.5	5.5	3.8	40	0	7.0	17.0	23.7	219°	12.0
15	7.8	11.2	10.3	0.0	-	-	-	0	10.7	22.8	33.1	211°	14.5
16	9.8	12.3	11.1	1.4	0.8	0.2	1.1	0.5	8.6	19.2	28.4	208°	12.7
17	5.6	9.8	7.6	16.1	3.6	1.1	15	0.1	3.4	11.4	16.1	84°	9.4
18	2.8	6.4	4.5	7.6	3.0	1.1	10	6	3.7	10.7	15.4	334°	7.6
19	1.2	6.1	3.3	0.0	-	-	-	6	3.3	7.6	10.0	308°	5.8
20	2.6	5.0	3.8	0.1	-	-	-	0.2	4.3	8.7	12.3	358°	6.5
21	0.0	3.9	1.7	0.3	-	-	-	4	3.8	10.2	14.7	353°	7.7
22	0.7	6.1	3.8	0.3	-	-	-	0.4	5.2	13.5	18.5	359°	8.3
23	5.3	7.2	6.3	0.0	-	-	-	0	6.5	12.1	17.5	7°	8.0
24	3.3	6.8	5.6	0.3	-	-	-	0	4.7	10.0	14.5	322°	6.9
25	3.4	8.2	6.5	0.8	-	-	-	0.3	4.2	10.9	13.2	265°	5.9
26	1.7	7.0	5.2	0.5	0.3	-	-	0	6.3	19.9	30.6	22°	12.4
27	1.1	2.6	1.6	0.0	-	-	-	0	8.6	20.6	23.9	43°	11.5
28	-0.5	1.2	0.5	0.0	-	-	-	0.2	8.2	18.1	23.2	49°	12.3
29	-0.1	1.3	0.7	0.0	-	-	-	0	6.4	14.0	17.0	37°	8.8
30	-0.4	4.1	1.8	0.0	-	-	-	2	4.8	13.8	19.9	46°	9.6
31	-0.7	3.7	2.0	0.0	-	-	-	4	2.7	9.4	11.8	296°	6.8

Humidity, dew point & pressure

Day	Hmin	Hmax	Hmean	Dmin	Dmax	Dmean	Pmin	Pmax	Pmean
1	84	95	89	1.4	5.7	3.6	1023	1027	1025
2	77	88	84	-1.6	1.4	-0.2	1027	1029	1028
3	65	87	76	-3.6	-0.7	-1.9	1018	1027	1022
4	75	87	82	-1.2	3.0	0.9	1008	1019	1014
5	65	95	83	0.1	6.4	3.1	995	1008	1002
6	94	98	95	0.9	6.1	3.3	993	1003	998
7	93	98	97	0.2	9.8	5.4	997	1003	1000
8	68	96	83	-0.5	9.1	4.5	988	1005	996
9	66	90	80	-1.6	1.5	0.0	1005	1018	1012
10	73	96	86	-2.7	5.9	2.6	1002	1018	1010
11	73	97	84	0.5	6.9	3.0	997	1017	1007
12	79	98	93	1.2	11.4	8.1	1009	1017	1013
13	90	98	95	10.5	12.0	11.3	1009	1011	1010
14	85	95	92	6.7	10.9	9.3	1008	1015	1012
15	74	94	82	5.6	8.1	7.3	1014	1017	1016
16	74	95	84	6.0	9.7	8.4	1016	1018	1017
17	85	97	93	4.4	8.9	6.5	1016	1021	1018
18	76	97	90	1.2	4.8	2.9	1020	1033	1026
19	84	97	91	0.5	4.0	1.9	1033	1035	1034
20	86	95	90	0.8	3.3	2.3	1035	1038	1036
21	74	95	86	-2.9	3.0	-0.4	1038	1040	1039
22	83	97	91	0.0	4.9	2.5	1035	1040	1038
23	83	96	91	3.9	6.0	4.9	1033	1035	1034
24	72	94	86	2.0	5.3	3.4	1024	1034	1029
25	83	95	91	2.4	6.8	5.2	1010	1024	1017
26	77	97	92	-1.9	6.3	4.0	1008	1018	1013
27	57	78	68	-6.0	-1.7	-3.7	1018	1025	1022
28	58	76	64	-6.5	-3.8	-5.6	1022	1025	1024
29	73	77	74	-3.8	-2.8	-3.3	1022	1024	1023
30	64	81	75	-3.8	-1.0	-2.3	1022	1025	1024
31	67	80	74	-3.7	-1.0	-2.2	1025	1026	1026

Other measures

Day	Night	Daymax	T+10m	T+1h	H+1h	T-10m	T-1h	H-1h	Fmin	Fmax	Fmean	AF hrs	AQmin	AQmax	AQmean
1	3.2	6.6	0.2	0.9	3	0.2	1.0	3	0.5	6.6	3.6	0	-	-	-
2	1.5	3.2	0.2	0.5	1	0.2	0.5	3	-2.0	3.0	0.9	0	-	-	-
3	-0.9	3.3	0.3	1.5	5	0.4	1.4	6	-1.9	3.3	1.4	2	-	-	-
4	2.6	4.3	0.2	0.7	4	0.2	0.6	5	-0.6	4.4	1.4	0	-	-	-
5	4.1	6.4	0.3	1.0	10	0.2	0.8	8	-0.7	7.1	3.0	0	-	-	-
6	4.3	4.7	0.2	0.4	2	0.3	1.0	2	-0.5	6.7	3.4	0	-	-	-
7	0.6	10.1	0.4	1.5	1	0.3	0.7	3	-2.0	11.3	4.4	0	-	-	-
8	9.2	10.0	0.2	0.6	4	0.4	1.5	9	-1.6	10.7	4.7	0	-	-	-
9	1.5	5.8	0.3	1.4	4	0.3	1.0	8	-2.2	5.8	1.0	0	-	-	-
10	-0.7	8.2	0.3	1.5	8	0.3	1.1	6	-2.4	6.4	2.4	2	-	-	-
11	4.7	7.3	0.2	0.8	3	0.2	0.9	18	0.1	6.5	3.5	0	-	-	-
12	4.1	12.1	0.3	1.2	6	0.1	0.3	2	0.6	14.0	8.9	0	-	-	-
13	11.4	13.3	0.1	0.4	2	0.2	0.8	2	12.8	15.6	14.0	0	-	-	-
14	11.3	11.7	0.1	0.3	7	0.7	1.8	6	5.3	13.4	10.9	0	-	-	-
15	7.8	11.2	0.2	0.7	5	0.3	0.4	6	4.3	11.5	9.9	0	-	-	-
16	10.3	12.3	0.2	0.7	9	0.3	0.8	6	8.3	12.9	11.7	0	-	-	-
17	8.6	6.7	0.1	0.4	3	0.2	0.8	4	2.8	10.6	6.7	0	-	-	-
18	3.5	6.4	0.4	1.4	4	0.3	1.0	10	-0.1	6.4	3.0	0	-	-	-
19	1.2	6.1	0.3	1.2	3	0.3	1.3	4	-2.1	6.1	1.9	0	-	-	-
20	2.6	5.0	0.2	0.5	3	0.2	1.0	3	-1.0	4.9	2.1	0	-	-	-
21	0.0	2.5	0.2	1.0	6	0.3	1.2	9	-4.4	3.9	0.0	0	-	-	-
22	0.7	6.1	0.2	1.0	3	0.1	0.4	8	-2.8	6.1	1.6	0	-	-	-
23	5.3	7.2	0.2	0.6	4	0.1	0.4	5	1.7	6.0	3.9	0	-	-	-
24	5.4	6.8	0.2	0.5	7	0.3	1.0	6	0.5	6.8	3.8	0	-	-	-
25	3.4	8.2	0.3	0.9	4	0.1	0.4	3	-0.2	8.1	4.9	0	-	-	-
26	5.9	6.7	0.1	0.5	6	0.4	1.5	9	-5.1	7.0	2.7	0	-	-	-
27	1.1	2.6	0.1	0.5	5	0.2	0.5	14	-5.0	1.9	-2.6	0	-	-	-
28	0.4	1.2	0.1	0.3	4	0.2	0.7	3	-6.0	0.2	-3.7	5	-	-	-
29	-0.5	1.3	0.1	0.5	2	0.1	0.3	1	-4.9	1.2	-2.8	0.3	-	-	-
30	-0.4	4.1	0.3	0.9	5	0.3	1.3	5	-5.4	2.9	-0.6	3	-	-	-
31	0.7	3.7	0.2	0.7	4	0.3	1.1	3	-5.2	3.7	0.8	2	-	-	-

View daily report for the 1st