Monthly Report for December 2015

Weather Summary
Measure	Mean / Sum (anomaly)	Min	Max	Mean Time
Minimum Temperature	9.4 °C (+5.8)	4.7 °C	14.0 °C	12:35
Maximum Temperature	13.3 °C (+5.1)	10.3 °C	16.0 °C	13:04
Mean Temperature	11.5 °C (+5.4)	8.1 °C	14.8 °C
Minimum Humidity	71%	53%	89%	11:24
Maximum Humidity	89%	73%	94%	10:07
Mean Humidity	81%	68%	91%
Minimum Pressure	1014 hPa	1004 hPa	1029 hPa	13:09
Maximum Pressure	1022 hPa	1013 hPa	1034 hPa	10:55
Mean Pressure	1018 hPa	1010 hPa	1032 hPa
Mean Wind Speed	7.8 mph (+2.7)	2.7 mph	13.5 mph
Maximum Wind Speed	17.9 mph	9.7 mph	26.1 mph	11:25
Maximum Gust	26.5 mph	12.5 mph	43.4 mph	12:59
Mean Wind Direction	209° [SSW]	107° [ESE]	250° [WSW]
Rainfall	52.2 mm (92%)	0.0 mm	6.1 mm
Maximum Hourly Rain	1.4 mm	0.2 mm	4.5 mm	13:33
Maximum 10-min Rain	0.8 mm	0.2 mm	2.7 mm	13:30
Maximum Rain Rate	26 mm/h	0.6 mm/h	126 mm/h	12:52
Minimum Dew Point	5.8 °C	1.1 °C	11.1 °C	12:15
Maximum Dew Point	10.6 °C	7.4 °C	13.5 °C	11:23
Mean Dew Point	8.3 °C	4.3 °C	12.0 °C
Night Minimum (21-09)	10.0 °C	4.7 °C	14.1 °C	09:28
Day Maximum (09-21)	13.0 °C	10.3 °C	16.0 °C	14:25
Max 10m Temp Rise	0.3 °C	0.1 °C	1.0 °C	09:12
Max 1hr Temp Rise	0.9 °C	0.3 °C	2.6 °C	10:11
Max 1hr Hum Rise	5%	1%	10%	11:24
Max 10m Temp Fall	0.3 °C	0.1 °C	1.8 °C	08:38
Max 1hr Temp Fall	1.0 °C	0.2 °C	4.5 °C	11:46
Max 1hr Hum Fall	5%	1%	13%	10:26
Max 10m Wind Speed	13.4 mph	7.2 mph	20.3 mph	13:28
Minimum Feels-like	8.1 °C	1.3 °C	15.4 °C	12:40
Maximum Feels-like	14.6 °C	10.6 °C	18.6 °C	10:02
Mean Feels-like	11.8 °C	6.4 °C	16.7 °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	3.9 °C (-0.7)	0.9 °C	8.6 °C
Humidity Range	18%	3%	36%
Pressure Range	8 hPa	1 hPa	17 hPa
Sun Hours	40 (62%) [18%]
Wet Hours	74 (119%) [9.9%]

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

December 2015

December 2015: Warmest December in 17 years of station data

Mean 11.5°C, 5.6°C above normal, the warmest December in 17 years of station data. Average max 13.3°C and lows 9.4°C. Warmest 16.0°C (19 Dec), coldest night 4.7°C (09 Dec).
Standout: 19 Dec brought 16.0°C, the highest maximum for December on station record; 26 Dec brought 14.0°C, the highest minimum for December on station record.
Rain 52.2 mm, 92% of normal, over 15 days of 1 mm+.
Sunshine 39.5 hours, 61% of normal. 10 days were sunless.
Date records still standing: 01 Dec (14.0°C max), 02 Dec (11.9°C min), 03 Dec (11.9°C min), 04 Dec (12.8°C max).

Written Mon 02 Nov, 18:03 GMT

‹ Nov 2015 Jan 2016 ›

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	24	Min < -5.0 °C	0	> 0 hrs	21	Falling Snow	0
> 0.1 mm	24	Min < 0.0 °C	0	> 1 hrs	11	Lying Snow	0
> 0.3 mm	19	Mean < 0.0 °C	0	> 3 hrs	6	Hail	0
> 1.0 mm	15	Mean > 20.0 °C	0	> 5 hrs	3	Thunder	0
> 5.0 mm	3	Max > 25.0 °C	0	> 10 hrs	0	Dense Fog	0
> 10.0 mm	0	Max > 30.0 °C	0	> 25% max poss.	7	Gusts > 30mph	10
> 20.0 mm	0	Ice Days	0	> 95% max poss.	0	Total Events	10

Misc.

Mean rainfall for days with >0.3mm: 2.7 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	9.3	14.0	12.3	3.7	1.5	0.6	5	1	6.4	17.3	30.1	244°	13.3
2	11.9	13.2	12.4	0.2	0.2	0.2	-	1	8.1	14.3	20.6	216°	10.8
3	11.9	13.1	12.6	3.0	2.6	2.0	54	0	8.9	19.4	27.9	206°	15.9
4	6.1	12.8	10.0	0.4	0.2	0.2	-	4	8.3	23.7	36.7	241°	15.1
5	11.4	12.7	12.1	0.0	-	-	-	0	13.5	26.1	37.3	220°	20.3
6	12.5	14.0	13.2	1.3	0.8	0.3	1.5	0	9.1	22.1	33.9	219°	16.0
7	11.6	13.8	12.9	0.2	-	-	-	1	5.6	14.3	17.6	194°	10.2
8	7.4	13.5	11.3	2.6	1.1	0.8	11	2	7.2	16.1	24.4	219°	12.4
9	4.7	11.1	8.3	0.0	-	-	-	6	6.7	16.1	23.5	224°	11.9
10	9.5	12.0	11.1	5.7	1.9	0.6	18	0.1	9.2	17.8	26.8	219°	14.2
11	6.0	10.4	9.1	0.6	0.6	0.4	24	0	5.9	14.7	20.8	250°	10.5
12	5.8	13.2	10.0	0.2	-	-	-	0	7.8	20.8	29.9	227°	15.4
13	5.9	13.1	8.1	2.6	0.5	0.2	0.6	0	2.7	16.6	23.9	107°	11.9
14	8.1	10.3	9.2	0.2	0.2	-	-	0.1	3.9	9.7	12.5	168°	7.2
15	9.4	13.6	11.6	6.1	2.4	0.9	24	0	3.0	11.4	15.4	162°	8.1
16	13.2	15.0	13.9	0.9	0.6	0.3	18	0.2	7.3	16.3	22.3	221°	10.9
17	11.8	15.2	13.6	0.2	0.2	-	-	0.3	7.2	14.0	19.9	214°	10.1
18	11.5	13.7	12.6	0.0	-	-	-	0.3	7.1	13.8	19.7	218°	11.5
19	13.2	16.0	14.8	0.0	-	-	-	1	8.8	16.8	26.3	206°	12.2
20	9.4	14.6	12.2	1.9	1.5	0.7	3.6	0.1	8.1	17.5	26.3	215°	13.4
21	7.5	12.9	9.9	1.8	0.9	0.7	3.6	0.7	8.1	20.6	33.4	223°	17.2
22	10.9	14.9	13.5	5.9	4.5	2.7	126	0.2	11.9	23.5	43.4	219°	18.1
23	8.7	11.6	10.3	0.0	-	-	-	5	8.4	21.3	31.1	219°	14.8
24	6.5	12.8	10.0	2.2	2.0	1.0	24	1	9.5	20.1	31.3	220°	15.4
25	5.9	14.5	10.3	1.9	0.6	0.3	0.7	0	6.7	17.3	27.9	209°	13.8
26	14.0	14.9	14.4	0.0	-	-	-	0	11.3	20.6	33.5	217°	14.7
27	12.4	14.5	14.0	0.5	0.4	0.2	0.8	0	8.3	20.1	27.9	215°	15.5
28	9.4	13.7	11.5	0.0	-	-	-	4	5.2	14.3	17.0	160°	9.1
29	9.7	12.4	10.9	2.6	1.7	1.3	72	4	7.1	15.9	20.8	204°	12.0
30	10.1	13.3	12.0	4.4	3.1	1.1	36	0.1	11.5	24.2	32.9	196°	17.7
31	5.5	10.8	8.6	3.1	2.6	1.5	42	6	8.9	18.7	26.8	221°	14.8

Humidity, dew point & pressure

Day	Hmin	Hmax	Hmean	Dmin	Dmax	Dmean	Pmin	Pmax	Pmean
1	61	93	80	5.1	11.8	8.9	1018	1025	1022
2	62	82	74	5.2	9.8	7.8	1022	1023	1022
3	72	89	81	7.7	11.3	9.4	1010	1023	1018
4	68	88	76	2.8	10.9	6.0	1011	1028	1024
5	59	73	68	4.7	7.8	6.4	1013	1024	1018
6	63	90	81	5.7	11.6	9.9	1012	1023	1016
7	84	90	88	9.1	12.0	11.0	1021	1026	1024
8	71	91	82	3.5	11.8	8.2	1019	1030	1021
9	70	88	80	2.7	7.4	5.0	1029	1034	1032
10	71	90	78	6.0	9.4	7.4	1021	1029	1024
11	77	91	85	3.5	8.5	6.7	1020	1024	1022
12	75	88	82	3.5	9.9	6.9	1013	1024	1018
13	76	94	91	4.3	9.5	6.7	1014	1019	1017
14	82	93	88	6.7	7.9	7.3	1012	1017	1015
15	89	92	91	7.7	12.2	10.2	1014	1017	1015
16	84	92	89	11.1	12.7	12.0	1013	1021	1017
17	67	88	79	8.3	12.4	10.0	1013	1020	1016
18	77	89	84	9.4	10.9	10.0	1016	1019	1017
19	71	89	80	9.4	13.5	11.2	1008	1015	1011
20	69	85	78	6.5	9.5	8.4	1007	1013	1010
21	79	90	84	5.1	11.3	7.3	1010	1018	1013
22	74	90	85	9.0	12.6	11.1	1010	1017	1012
23	63	90	76	3.9	9.3	6.3	1012	1022	1018
24	61	84	74	1.1	9.2	5.5	1007	1020	1012
25	71	91	84	1.5	12.4	7.8	1016	1022	1019
26	71	87	78	9.2	12.4	10.5	1015	1019	1017
27	75	89	84	9.6	12.6	11.4	1015	1024	1020
28	61	90	77	5.8	10.5	7.4	1011	1024	1016
29	72	87	82	6.5	9.2	7.8	1012	1022	1017
30	53	89	72	3.5	9.8	6.8	1004	1019	1010
31	62	88	74	2.3	8.5	4.3	1005	1019	1011

Other measures

Day	Night	Daymax	T+10m	T+1h	H+1h	T-10m	T-1h	H-1h	Fmin	Fmax	Fmean	AQmin	AQmax	AQmean
1	9.3	14.0	1.0	2.6	4	0.2	0.7	6	8.4	15.8	13.2	-	-	-
2	11.9	13.2	0.2	0.5	5	0.1	0.4	4	11.9	14.0	12.9	-	-	-
3	12.7	12.8	0.2	1.0	7	0.3	0.7	4	12.6	15.0	13.6	-	-	-
4	6.1	12.3	0.4	1.9	5	0.6	2.5	13	2.1	14.5	9.1	-	-	-
5	11.4	12.7	0.1	0.4	5	0.1	0.2	7	11.4	13.0	12.1	-	-	-
6	12.4	14.0	0.3	1.0	7	0.2	0.5	9	12.5	15.5	14.5	-	-	-
7	12.9	13.8	0.2	0.4	1	0.2	0.7	2	12.6	16.1	14.6	-	-	-
8	11.6	13.5	0.2	0.7	4	0.3	1.0	9	4.5	15.6	11.5	-	-	-
9	4.7	11.1	0.4	2.0	4	0.2	0.6	6	1.3	11.1	7.3	-	-	-
10	10.5	12.0	0.2	0.6	7	0.5	1.2	3	6.6	12.5	11.2	-	-	-
11	9.5	10.4	0.1	0.4	6	0.5	1.3	5	3.1	10.6	7.5	-	-	-
12	5.8	13.2	0.5	1.8	5	0.1	0.2	6	2.9	14.1	9.6	-	-	-
13	5.9	10.3	0.3	0.9	9	1.8	4.5	1	2.9	14.2	7.5	-	-	-
14	8.1	10.3	0.2	0.7	2	0.2	0.6	2	5.7	10.7	8.2	-	-	-
15	9.4	12.6	0.2	0.5	2	0.1	0.2	1	8.7	16.0	12.9	-	-	-
16	12.6	15.0	0.2	0.7	2	0.2	0.7	2	15.4	17.6	16.2	-	-	-
17	12.7	15.2	0.3	0.7	7	0.2	0.8	6	13.0	16.9	14.9	-	-	-
18	11.5	13.7	0.2	0.6	3	0.1	0.5	3	12.6	15.2	13.9	-	-	-
19	12.6	16.0	0.3	0.7	2	0.2	0.7	7	14.9	18.6	16.7	-	-	-
20	12.3	13.0	0.2	0.5	6	0.5	1.7	4	5.7	15.5	12.5	-	-	-
21	7.5	12.9	0.4	1.5	5	0.3	1.1	5	4.0	14.8	9.1	-	-	-
22	9.9	14.9	0.3	1.1	4	0.7	1.8	9	11.9	16.8	15.3	-	-	-
23	8.7	11.6	0.2	0.9	5	0.2	0.6	6	4.8	11.9	9.8	-	-	-
24	10.4	12.8	0.2	0.6	7	0.5	1.6	10	2.9	13.5	9.3	-	-	-
25	5.9	14.3	0.4	1.7	3	0.2	0.4	2	2.9	17.0	10.3	-	-	-
26	14.1	14.9	0.1	0.3	2	0.2	0.4	4	14.9	17.0	15.9	-	-	-
27	13.4	14.5	0.1	0.4	6	0.2	0.8	1	13.9	17.0	16.0	-	-	-
28	9.4	13.7	0.5	1.6	4	0.2	0.9	8	7.3	13.9	11.7	-	-	-
29	10.1	11.3	0.2	0.7	8	0.4	1.4	5	6.5	12.8	11.1	-	-	-
30	10.0	13.3	0.2	0.8	10	0.2	1.0	8	10.2	13.4	12.3	-	-	-
31	7.9	10.8	0.3	1.1	10	1.0	2.3	9	2.1	11.0	6.4	-	-	-

View daily report for the 1st