Monthly Report for May 2015

Weather Summary
Measure	Mean / Sum (anomaly)	Min	Max	Mean Time
Minimum Temperature	8.9 °C (-0.1)	4.9 °C	13.5 °C	09:03
Maximum Temperature	17.1 °C (-0.7)	10.7 °C	21.7 °C	15:12
Mean Temperature	13.0 °C (-0.4)	8.6 °C	16.8 °C
Minimum Humidity	44%	30%	72%	15:27
Maximum Humidity	84%	73%	97%	09:20
Mean Humidity	64%	49%	86%
Minimum Pressure	1011 hPa	988 hPa	1024 hPa	12:05
Maximum Pressure	1018 hPa	1002 hPa	1028 hPa	11:38
Mean Pressure	1014 hPa	994 hPa	1026 hPa
Mean Wind Speed	6.0 mph (+1.3)	2.7 mph	11.6 mph
Maximum Wind Speed	14.8 mph	8.7 mph	25.5 mph	12:50
Maximum Gust	21.9 mph	12.8 mph	42.0 mph	12:16
Mean Wind Direction	217° [SW]	10° [N]	334° [NNW]
Rainfall	52.1 mm (113%)	0.0 mm	14.4 mm
Maximum Hourly Rain	2.0 mm	0.2 mm	7.5 mm	11:58
Maximum 10-min Rain	1.0 mm	0.2 mm	5.0 mm	12:52
Maximum Rain Rate	15 mm/h	0.4 mm/h	78 mm/h	10:26
Minimum Dew Point	2.3 °C	-0.9 °C	7.6 °C	11:57
Maximum Dew Point	9.4 °C	2.8 °C	14.7 °C	12:40
Mean Dew Point	5.8 °C	0.9 °C	10.7 °C
Night Minimum (21-09)	9.1 °C	4.9 °C	13.5 °C	04:35
Day Maximum (09-21)	17.1 °C	10.7 °C	21.7 °C	15:12
Max 10m Temp Rise	0.6 °C	0.3 °C	0.8 °C	11:12
Max 1hr Temp Rise	2.0 °C	0.9 °C	3.2 °C	10:38
Max 1hr Hum Rise	9%	4%	25%	15:35
Max 10m Temp Fall	0.6 °C	0.3 °C	3.1 °C	14:19
Max 1hr Temp Fall	1.6 °C	1.0 °C	4.6 °C	16:47
Max 1hr Hum Fall	14%	7%	22%	11:14
Max 10m Wind Speed	11.2 mph	6.1 mph	18.9 mph	11:00
Minimum Feels-like	6.9 °C	2.0 °C	13.7 °C	10:58
Maximum Feels-like	17.7 °C	10.7 °C	23.5 °C	14:41
Mean Feels-like	12.9 °C	7.3 °C	17.8 °C
Air-frost Hrs	0 hrs	0 hrs	0 hrs
Minimum PM2.5	0.0 µg/m³	0.0 µg/m³	0.0 µg/m³	n/a
Maximum PM2.5	n/a	n/a	n/a
Mean PM2.5	n/a	n/a	n/a
Temperature Range	8.2 °C (-0.6)	2.7 °C	14.6 °C
Humidity Range	40%	25%	54%
Pressure Range	8 hPa	1 hPa	15 hPa
Sun Hours	172 (91%) [39%]
Wet Hours	53 (132%) [7.1%]

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.

Written report

May 2015

May 2015: 4th-coldest of 18 station Mays

Mean 13.0°C, 0.4°C below normal, 4th-coldest of 18 station Mays. Highs averaged 17.1°C and lows 8.9°C. Warmest 21.7°C (11 May), coldest night 4.9°C (01 May).
Rain 52.1 mm, 113% of normal, over 10 days of 1 mm+. Wettest day: 14.4 mm on 14 May.
Sunshine 172.0 hours, 91% of normal.
Days that still hold the station record for their date: 04 May (4.5 mm rain), 14 May (10.7°C low max), 19 May (14.3°C low max), 20 May (5.1°C low min).

Written Mon 02 Nov, 18:03 GMT

‹ Apr 2015 Jun 2015 ›

Written reports for 2015: Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec · the year

Days Of...
Rainfall		Temperature		Sunshine		Other
> 0.0 mm	14	Min < -5.0 °C	0	> 0 hrs	30	Falling Snow	0
> 0.1 mm	13	Min < 0.0 °C	0	> 1 hrs	27	Lying Snow	0
> 0.3 mm	11	Mean < 0.0 °C	0	> 3 hrs	22	Hail	0
> 1.0 mm	10	Mean > 20.0 °C	0	> 5 hrs	15	Thunder	2
> 5.0 mm	2	Max > 25.0 °C	0	> 10 hrs	3	Dense Fog	0
> 10.0 mm	2	Max > 30.0 °C	0	> 25% max poss.	21	Gusts > 30mph	6
> 20.0 mm	0	Min > 20.0 °C	0	> 95% max poss.	1	Total Events	8

Misc.

Mean rainfall for days with >0.3mm: 4.7 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	4.9	13.1	8.6	0.0	-	-	-	4	5.4	11.4	17.0	74°	9.2
2	5.1	13.9	9.2	0.3	0.3	0.2	-	0.4	5.7	13.0	18.5	86°	9.5
3	9.3	19.2	14.0	2.4	0.9	0.6	18	2	7.9	19.4	33.4	184°	15.4
4	11.8	18.5	14.4	4.5	2.6	0.8	5	6	6.4	16.1	24.4	190°	11.5
5	11.9	16.0	14.0	3.5	2.9	0.9	11	5	11.6	25.5	42.0	206°	18.9
6	8.3	14.3	11.6	12.9	7.5	5.0	78	5	11.4	22.5	34.2	218°	18.0
7	9.5	17.3	12.9	0.0	-	-	-	4	7.1	20.0	31.0	223°	17.6
8	8.1	16.9	12.6	0.2	0.2	0.2	-	0.1	5.6	12.0	16.0	180°	8.4
9	10.9	17.6	14.0	0.0	-	-	-	4	8.9	21.0	32.0	255°	16.1
10	7.8	19.0	14.4	0.0	-	-	-	8	5.0	13.0	19.0	210°	10.0
11	13.5	21.7	16.8	0.0	-	-	-	6	5.6	14.0	20.0	221°	10.7
12	11.2	17.7	14.1	0.1	-	-	-	9	7.1	17.8	27.5	249°	14.9
13	7.3	19.7	13.6	0.0	-	-	-	14	3.1	9.8	14.3	10°	7.2
14	8.0	10.7	9.0	14.4	3.0	1.0	9	0	5.7	13.2	20.6	64°	10.4
15	7.4	16.3	11.3	0.9	0.5	0.2	0.4	6	4.9	12.3	16.1	320°	8.5
16	10.7	18.5	14.5	0.0	-	-	-	9	5.4	13.2	17.5	281°	9.4
17	7.6	17.9	12.8	0.0	-	-	-	10	5.3	12.5	17.8	255°	10.1
18	8.8	15.5	11.8	1.7	0.8	0.2	0.8	3	8.3	21.0	39.8	230°	18.0
19	7.4	14.3	10.1	3.3	2.4	2.2	36	8	7.3	19.2	24.4	252°	13.3
20	5.1	15.3	10.3	0.0	-	-	-	7	4.6	12.5	17.5	290°	8.5
21	5.5	20.1	13.6	0.0	-	-	-	12	4.5	13.5	18.5	259°	8.7
22	9.0	19.5	15.2	0.0	-	-	-	4	3.8	11.8	16.1	251°	7.6
23	12.1	17.2	14.4	2.0	2.0	0.8	5	3	3.6	10.0	12.8	49°	6.6
24	12.0	20.0	15.6	0.0	-	-	-	4	3.8	11.8	15.4	250°	8.4
25	8.6	16.1	13.1	0.0	-	-	-	0.5	2.7	8.7	12.8	334°	6.4
26	9.5	18.9	14.2	0.0	-	-	-	7	3.7	9.4	14.7	325°	6.1
27	7.5	20.3	14.0	0.0	-	-	-	10	4.9	13.8	20.8	264°	10.8
28	11.8	17.3	14.5	0.0	-	-	-	8	6.5	13.7	19.9	268°	10.0
29	9.4	14.7	11.6	2.2	1.8	0.6	2.7	3	6.5	16.6	25.3	247°	12.9
30	7.3	18.2	12.6	0.0	-	-	-	8	5.6	13.2	17.6	239°	10.8
31	9.6	15.7	12.9	3.7	1.0	0.4	1.2	2	6.8	17.0	22.8	234°	12.8

Humidity, dew point & pressure

Day	Hmin	Hmax	Hmean	Dmin	Dmax	Dmean	Pmin	Pmax	Pmean
1	40	80	60	-0.7	2.8	0.9	1008	1011	1010
2	53	89	69	-0.1	7.6	3.7	1003	1012	1008
3	55	95	82	7.6	14.7	10.7	994	1003	998
4	42	93	66	4.3	11.1	7.6	992	1005	1002
5	41	95	71	2.7	13.9	8.2	988	1002	994
6	52	87	73	4.4	9.7	6.9	1001	1010	1004
7	39	83	61	1.1	8.4	5.0	1010	1016	1014
8	47	84	68	2.6	10.8	6.6	1010	1015	1012
9	37	84	60	2.1	10.8	6.0	1010	1023	1015
10	48	86	63	2.7	9.5	7.2	1020	1024	1023
11	45	79	62	4.0	11.7	9.1	1016	1020	1017
12	34	74	52	-0.9	7.4	3.8	1015	1022	1018
13	33	73	52	0.5	6.8	3.3	1015	1023	1018
14	72	97	86	5.1	8.1	6.8	1009	1016	1012
15	48	97	74	4.4	8.5	6.3	1014	1023	1020
16	36	87	60	1.1	12.1	6.1	1020	1028	1024
17	37	76	54	1.1	6.3	3.4	1018	1028	1025
18	42	94	67	0.2	12.0	5.4	1002	1017	1007
19	45	77	64	1.4	5.6	3.4	1000	1010	1005
20	44	83	63	1.1	5.7	3.2	1010	1023	1016
21	30	81	55	1.2	7.6	3.8	1023	1027	1026
22	49	76	64	2.9	11.7	8.2	1023	1027	1025
23	51	88	70	4.1	11.8	8.8	1024	1025	1024
24	47	74	63	3.4	12.6	8.4	1017	1024	1020
25	48	73	61	3.4	8.2	5.5	1018	1021	1020
26	43	80	60	4.7	7.9	6.2	1021	1026	1023
27	35	76	57	3.1	8.0	5.1	1015	1027	1022
28	34	75	49	0.6	8.4	3.4	1012	1015	1013
29	48	87	63	1.6	9.8	4.6	1005	1013	1008
30	34	81	55	1.2	6.3	3.3	1010	1014	1012
31	43	93	75	0.2	14.3	8.3	1004	1012	1007

Other measures

Day	Night	Daymax	T+10m	T+1h	H+1h	T-10m	T-1h	H-1h	Fmin	Fmax	Fmean	AQmin	AQmax	AQmean
1	4.9	13.1	0.8	1.7	5	0.5	1.2	11	2.0	13.1	7.3	-	-	-
2	5.1	13.9	0.5	1.9	8	0.3	1.1	11	2.3	13.9	8.2	-	-	-
3	9.3	19.2	0.6	2.3	8	0.5	1.6	17	7.0	21.9	15.6	-	-	-
4	11.8	18.5	0.5	2.2	14	0.5	1.4	15	12.0	18.5	14.9	-	-	-
5	11.9	16.0	0.6	1.9	6	0.4	1.2	21	11.9	18.2	15.1	-	-	-
6	8.3	14.3	0.6	1.9	18	0.9	1.8	17	4.1	14.3	11.4	-	-	-
7	9.5	17.3	0.6	1.8	5	0.4	1.3	11	5.5	17.3	12.4	-	-	-
8	8.1	16.9	0.5	2.0	9	0.3	1.0	14	3.6	16.9	11.8	-	-	-
9	11.7	17.6	0.6	1.8	5	0.5	1.4	12	10.9	17.6	14.3	-	-	-
10	7.8	19.0	0.6	2.1	8	0.3	1.2	10	3.2	19.4	14.0	-	-	-
11	13.5	21.7	0.6	2.3	4	0.5	1.6	9	13.7	23.5	17.8	-	-	-
12	11.6	17.7	0.6	2.6	6	0.7	1.8	15	11.2	17.7	14.1	-	-	-
13	7.3	19.7	0.7	3.0	16	0.5	2.4	13	5.6	19.7	13.4	-	-	-
14	8.0	10.7	0.3	0.9	9	0.3	1.0	7	4.7	10.7	7.3	-	-	-
15	7.4	16.3	0.6	1.6	9	0.4	1.0	17	4.2	16.3	10.7	-	-	-
16	11.2	18.5	0.6	1.7	6	0.6	1.9	22	10.7	18.5	15.0	-	-	-
17	7.6	17.9	0.6	2.1	7	0.6	1.4	14	5.2	17.9	12.5	-	-	-
18	9.6	15.5	0.7	1.5	9	0.7	1.6	22	5.6	15.7	11.8	-	-	-
19	7.4	14.3	0.8	2.6	25	3.1	4.6	11	3.7	14.3	8.9	-	-	-
20	5.1	15.3	0.7	2.6	10	0.8	2.5	12	2.0	15.3	9.5	-	-	-
21	5.5	20.1	0.8	3.2	7	0.5	1.8	11	3.0	20.1	13.3	-	-	-
22	9.0	19.5	0.7	3.2	9	0.3	1.2	12	7.1	21.4	16.0	-	-	-
23	13.0	17.2	0.5	1.7	11	0.9	2.8	22	12.1	19.3	15.5	-	-	-
24	12.0	20.0	0.5	2.0	10	0.7	1.6	11	12.0	21.0	16.5	-	-	-
25	8.6	16.1	0.4	1.5	4	0.4	1.2	8	6.7	16.1	13.1	-	-	-
26	9.5	18.9	0.6	1.9	6	0.4	1.9	10	7.5	18.9	14.1	-	-	-
27	7.5	20.3	0.6	2.0	9	0.4	1.3	8	5.4	20.3	13.9	-	-	-
28	12.1	17.3	0.7	1.8	7	0.7	1.5	19	11.8	17.3	14.5	-	-	-
29	9.8	14.7	0.7	2.4	18	0.6	1.6	18	7.1	14.9	11.5	-	-	-
30	7.3	18.2	0.5	2.1	10	0.5	1.7	14	4.7	18.2	12.1	-	-	-
31	11.0	15.7	0.4	1.2	8	0.4	1.4	18	6.7	19.1	14.0	-	-	-

View daily report for the 1st