|
January 2018 |
 |
|
A January walk along Jacob's
Ladder, Sidmouth with its deep-red Triassic sandstone cliffs and
beach sand |
|
Warmer than normal with around
average rainfall and just a little below my long term average for
sunshine. Overall, a generally mild and pleasant month. |
|
Summary for January 2018 |
|
Mean Max: |
10.5ºC |
(+1.6ºC) |
|
Mean Min: |
3.7ºC |
(+0.6ºC) |
|
Mean (min+max ÷
2): |
7.1ºC |
(+1.1ºC) |
|
Mean (integrated): |
6.9ºC |
|
|
High Max: |
14.0ºC |
23rd |
|
Low Max: |
4.3ºC |
8th |
|
High Min: |
10.7ºC |
28th |
|
Low Min: |
-2.4ºC |
30th |
|
Mean Grass Min: |
0.3ºC |
|
|
Grass Min: |
-4.4ºC |
6th |
|
Days >10°C |
18 Days |
|
|
Days >5°C |
30 Days |
|
|
Nights >10°C |
2 Days |
|
|
Nights >5°C |
11 Days |
|
|
Rain Total (gauge): |
82.7 mm |
(101%) |
|
Rain Total (tipping bucket): |
78.7 mm |
(96%) |
|
Rain Days >0.2 mm: |
20 Days |
|
|
Rain Days >1.0 mm: |
15 Days |
|
|
Max 24 hrs: |
9.8 mm |
16th |
|
Days without any rain: |
11 |
|
|
Air Frost: |
6 Days |
|
|
Grass Frost: |
16 Days |
|
|
Snow Falling: |
0 Days |
|
|
Snow (50%) @ 9am: |
0 Days |
|
|
Ice Days: |
0 Days |
|
|
Thunder Heard: |
1 Day |
|
|
Hail <5 mm: |
4 Days |
|
|
Hail >5 mm: |
0 Days |
|
|
Fog @ 9am: |
2 Days |
|
|
Total Monthly Sunshine: |
77.4 Hours |
(97%) |
|
Most Sunshine in a Day: |
7.2 Hours |
7th |
|
Average Daily Sunshine: |
2.5 Hours |
|
|
Sunless Days: |
6 Days |
|
|
Cloudless Days: |
2 Days |
|
|
Total Possible Sunshine: |
265.3 Hours |
|
|
Percentage of Total Sun: |
29% |
|
|
Average Sunny Interval: |
15.9 |
mins |
|
Maximum UV Index: |
1.1 |
23rd |
|
Mean Soil Temp @ 10 cm: |
6.8ºC |
|
|
Min Soil Temp @ 10 cm: |
4.9ºC |
12th |
|
Max Soil Temp @ 10 cm: |
8.6ºC |
24th |
|
Mean Soil Temp @ 30 cm: |
7.1ºC |
|
|
Min Soil Temp @ 30 cm: |
5.8ºC |
12th |
|
Max Soil Temp @ 30 cm: |
8.1ºC |
24th |
|
Mean Soil Temp @ 100 cm: |
8.3ºC |
|
|
Min Soil Temp @ 100 cm: |
7.8ºC |
14th |
|
Max Soil Temp @ 100 cm: |
8.9ºC |
3rd |
|
Ave 10 Min Wind >39 mph: |
0.00 Days |
|
|
N: |
3.80 Days |
12% |
|
NE: |
1.20 Days |
4% |
|
E: |
1.09 Days |
4% |
|
SE: |
1.84 Days |
6% |
|
S: |
4.83 Days |
16% |
|
SW: |
3.50 Days |
11% |
|
W: |
5.19 Days |
17% |
|
NW: |
3.93 Days |
13% |
|
Calm: |
5.63 Days |
18% |
|
Wind Chill Low: |
-3.6ºC |
12th |
|
Mean Wind: |
3.5 mph |
|
|
Max Gust: |
46 mph |
24th |
|
Mean Cloud Cover: |
66% |
|
|
Mean RH @ 9am: |
92% |
|
|
Rain >0.1mm/hour: |
6.9 Hours |
|
|
Frost Duration: |
35.9 Hours |
|
|
Air Frost in a Day: |
13.3 Hours |
12th |
|
Mean Sea Temperature: |
9.4ºC |
(+0.5ºC) |
|
Normal for Month: |
8.9ºC |
|
|
Max Sea Temperature: |
11.3ºC |
4th |
|
Min Sea Temperature: |
9.1ºC |
19th |
|
Mean Pressure @ 9am: |
1011.1 hPa |
|
|
Mean Pressure: |
1010.9 hPa |
|
|
Max Pressure: |
1033.6 hPa |
28th |
|
Min Pressure: |
992.4 hPa |
5th |
|
Max Change in 24 hours: |
25.3 hPa |
30th |
|
Radiation Daily Mean: |
3.20 MJ/m² |
|
|
Max Daily Value: |
5.99 MJ/m² |
5th |
|
Min Daily Value: |
0.81 MJ/m² |
8th |
|
Number of Days with Data: |
31 Days |
|
|
1-Hour Maximum: |
434 W/m² |
25th |
|
Starting Time of the Hour: |
|
13:00 |
|
Max Dewpoint: |
12.6ºC |
4th |
|
Min Dewpoint: |
-3.1ºC |
30th |
|
Mean Dewpoint: |
5.1ºC |
|
|
Max Humidity: |
99% |
4th |
|
Min Humidity: |
65% |
25th |
|
Mean Humidity: |
87% |
|
 |
|
|
|
Weather Data for Otter Valley, Devon.
January 2018 |
|
|
Temp oC |
Grass |
Hum (%) |
Soil oC
(cm) |
Soil |
DP (oC) |
Wind (mph) |
Rain |
Air (hPa) |
W/m² |
UV |
Sun |
Frost |
Sea |
Observations |
|
|
Min |
Max |
Min |
Min |
Max |
10 |
30 |
100 |
(cb) |
Min |
Max |
Max |
Ave |
Run |
mm |
Min |
Max |
Max |
Max |
Hours |
Hours |
Temp |
|
1 |
4.7 |
9.6 |
1.1 |
76 |
95 |
7.4 |
7.8 |
8.3 |
2.8 |
2.9 |
7.0 |
25 |
5.0 |
120 |
4.1 |
995 |
1010 |
376 |
0.8 |
3.1 |
0.0 |
10.2 |
Sunny intervals all day |
|
2 |
3.4 |
12.6 |
0.0 |
83 |
98 |
7.2 |
7.5 |
8.7 |
2.1 |
2.0 |
11.7 |
26 |
2.3 |
55 |
0.5 |
994 |
1013 |
132 |
0.6 |
0.2 |
0.0 |
10.2 |
Sunny ints am, cloudy pm |
|
3 |
6.1 |
13.1 |
3.9 |
69 |
95 |
7.8 |
7.8 |
8.9 |
2.8 |
3.8 |
12.2 |
24 |
0.0 |
0 |
6.7 |
993 |
1006 |
381 |
1.0 |
0.9 |
0.0 |
10.2 |
Sunshine and showers |
|
4 |
7.6 |
13.0 |
4.4 |
71 |
99 |
8.0 |
7.8 |
8.9 |
2.5 |
5.0 |
12.6 |
22 |
0.0 |
0 |
9.6 |
993 |
1004 |
227 |
0.9 |
3.4 |
0.0 |
10.3 |
Sunny intervals all day |
|
5 |
1.3 |
9.9 |
-1.7 |
70 |
95 |
7.4 |
7.8 |
8.9 |
2.6 |
0.5 |
6.5 |
7 |
0.1 |
3 |
4.3 |
992 |
997 |
424 |
0.9 |
6.1 |
0.0 |
10.3 |
Sunny am, showers pm |
|
6 |
-1.9 |
5.7 |
-4.4 |
85 |
98 |
6.0 |
7.2 |
8.9 |
2.8 |
-2.7 |
4.1 |
17 |
2.9 |
71 |
0.5 |
997 |
1017 |
348 |
0.7 |
5.3 |
9.7 |
10.1 |
Sunny intervals all day |
|
7 |
1.7 |
6.3 |
-1.7 |
71 |
86 |
5.5 |
6.5 |
8.9 |
2.1 |
-2.1 |
2.3 |
24 |
6.4 |
153 |
0.0 |
1017 |
1024 |
334 |
0.8 |
7.2 |
0.0 |
9.8 |
Sunny intervals all day |
|
8 |
1.9 |
4.3 |
-1.7 |
72 |
93 |
5.1 |
6.1 |
8.4 |
2.4 |
-2.1 |
2.8 |
12 |
2.2 |
53 |
0.0 |
1015 |
1023 |
56 |
0.0 |
0.0 |
0.0 |
9.6 |
Cloudy all day |
|
9 |
3.8 |
10.3 |
3.3 |
90 |
96 |
5.8 |
6.1 |
8.3 |
2.7 |
2.8 |
9.6 |
19 |
4.9 |
117 |
4.6 |
999 |
1015 |
112 |
0.6 |
0.0 |
0.0 |
9.5 |
Cloudy all day |
|
10 |
-0.7 |
10.7 |
-2.2 |
85 |
99 |
6.0 |
6.5 |
8.3 |
2.8 |
-1.1 |
9.6 |
15 |
1.4 |
34 |
0.0 |
999 |
1006 |
334 |
0.8 |
6.9 |
2.6 |
9.3 |
Sunny all day |
|
11 |
2.1 |
9.3 |
-2.2 |
78 |
98 |
5.7 |
6.1 |
8.3 |
2.6 |
-0.9 |
6.3 |
12 |
2.0 |
48 |
0.0 |
1005 |
1025 |
321 |
0.8 |
6.9 |
0.0 |
9.4 |
Sunny all day |
|
12 |
-2.3 |
8.8 |
-4.4 |
83 |
99 |
4.9 |
5.8 |
8.3 |
2.5 |
-3.0 |
7.7 |
22 |
2.8 |
68 |
0.0 |
1020 |
1026 |
220 |
0.8 |
0.4 |
13.3 |
9.3 |
Brief sunny ints all day |
|
13 |
7.3 |
9.0 |
5.6 |
80 |
90 |
5.8 |
6.0 |
8.3 |
2.1 |
4.4 |
7.1 |
24 |
7.4 |
177 |
0.0 |
1014 |
1020 |
79 |
0.5 |
0.0 |
0.0 |
9.4 |
Cloudy all day |
|
14 |
4.6 |
7.9 |
1.7 |
79 |
92 |
6.1 |
6.2 |
7.8 |
2.4 |
2.9 |
6.2 |
14 |
3.0 |
73 |
0.0 |
1015 |
1019 |
224 |
0.8 |
0.4 |
0.0 |
9.3 |
Brief sunny ints all day |
|
15 |
7.8 |
12.3 |
3.9 |
79 |
97 |
6.8 |
6.7 |
7.8 |
2.5 |
4.6 |
10.6 |
31 |
6.6 |
158 |
5.5 |
996 |
1015 |
337 |
1.0 |
3.9 |
0.0 |
9.2 |
Rain am, sunny intervals pm |
|
16 |
5.5 |
8.7 |
0.6 |
71 |
93 |
6.8 |
6.9 |
7.8 |
2.1 |
1.6 |
6.3 |
26 |
3.6 |
87 |
9.8 |
996 |
1001 |
350 |
1.0 |
2.6 |
0.0 |
9.0 |
Sunshine and showers |
|
17 |
3.2 |
9.1 |
0.0 |
70 |
94 |
6.0 |
6.7 |
8.3 |
2.9 |
0.6 |
6.2 |
22 |
3.8 |
92 |
6.7 |
999 |
1013 |
437 |
1.0 |
3.5 |
0.0 |
8.8 |
Showers am, sunny pm |
|
18 |
5.1 |
12.1 |
-0.6 |
75 |
95 |
6.6 |
6.7 |
8.3 |
3.3 |
1.9 |
10.1 |
44 |
4.5 |
109 |
2.9 |
999 |
1009 |
428 |
0.9 |
2.6 |
0.0 |
8.8 |
Showers am, sunny ints pm |
|
19 |
-0.4 |
8.9 |
-3.3 |
72 |
97 |
5.8 |
6.5 |
8.3 |
2.8 |
-1.2 |
4.5 |
17 |
1.2 |
30 |
0.7 |
1009 |
1012 |
428 |
1.0 |
4.9 |
1.2 |
8.7 |
Sunny intervals all day |
|
20 |
1.4 |
12.2 |
-0.6 |
83 |
98 |
5.9 |
6.1 |
8.0 |
2.1 |
0.5 |
10.8 |
25 |
3.1 |
75 |
4.1 |
998 |
1011 |
283 |
0.9 |
1.4 |
0.0 |
8.7 |
Sunshine and light showers |
|
21 |
4.5 |
13.3 |
2.2 |
84 |
99 |
6.8 |
6.7 |
7.8 |
2.5 |
3.2 |
11.8 |
20 |
2.5 |
59 |
6.2 |
1008 |
1014 |
132 |
0.8 |
0.0 |
0.0 |
8.8 |
Rain am, cloudy pm |
|
22 |
8.5 |
12.6 |
2.8 |
75 |
96 |
7.8 |
7.2 |
7.8 |
2.0 |
5.9 |
11.1 |
21 |
2.4 |
58 |
1.9 |
1007 |
1019 |
281 |
1.0 |
1.9 |
0.0 |
8.8 |
Sunny intervals all day |
|
23 |
7.2 |
14.0 |
2.8 |
89 |
98 |
8.0 |
7.8 |
8.0 |
2.3 |
5.9 |
12.5 |
23 |
5.9 |
141 |
0.0 |
1013 |
1019 |
371 |
1.1 |
0.8 |
0.0 |
8.9 |
Brief sunny ints all day |
|
24 |
6.3 |
12.6 |
1.1 |
89 |
98 |
8.6 |
8.1 |
8.3 |
2.0 |
4.7 |
11.9 |
46 |
9.9 |
238 |
7.2 |
1003 |
1014 |
79 |
0.5 |
0.0 |
0.0 |
9.1 |
Rain am, cloudy pm |
|
25 |
2.6 |
11.4 |
-1.1 |
65 |
98 |
7.5 |
8.0 |
8.3 |
2.0 |
1.7 |
7.3 |
32 |
3.5 |
85 |
0.0 |
1005 |
1008 |
544 |
1.0 |
5.2 |
0.0 |
9.3 |
Sunny intervals all day |
|
26 |
2.3 |
9.6 |
-0.6 |
72 |
98 |
6.8 |
7.5 |
8.3 |
2.0 |
0.7 |
6.1 |
16 |
1.3 |
31 |
0.5 |
1008 |
1027 |
531 |
1.1 |
3.5 |
0.0 |
9.3 |
Sunny intervals all day |
|
27 |
-0.1 |
11.9 |
-1.7 |
93 |
99 |
6.6 |
7.1 |
8.3 |
2.0 |
-0.9 |
11.4 |
19 |
2.6 |
63 |
2.2 |
1024 |
1028 |
132 |
0.8 |
0.0 |
1.1 |
9.3 |
Light rain am, cloudy pm |
|
28 |
10.7 |
13.5 |
7.8 |
83 |
94 |
8.0 |
7.6 |
8.3 |
2.2 |
8.9 |
11.6 |
16 |
2.2 |
53 |
0.0 |
1028 |
1034 |
204 |
1.0 |
0.5 |
0.0 |
9.4 |
Sunny ints am, cloudy pm |
|
29 |
10.1 |
13.3 |
-1.1 |
82 |
95 |
8.4 |
8.1 |
8.3 |
2.9 |
0.7 |
10.7 |
22 |
3.8 |
95 |
0.0 |
1027 |
1033 |
204 |
1.0 |
0.5 |
0.0 |
9.5 |
Brief sunny ints all day |
|
30 |
-2.4 |
10.3 |
-3.9 |
77 |
98 |
7.2 |
8.0 |
8.3 |
3.0 |
-3.1 |
9.8 |
23 |
2.5 |
92 |
0.7 |
1007 |
1033 |
319 |
1.1 |
3.3 |
8.2 |
9.4 |
Sunny am, cloudy pm |
|
31 |
3.3 |
10.3 |
-2.2 |
80 |
90 |
7.2 |
7.8 |
8.3 |
3.0 |
1.0 |
5.9 |
22 |
2.6 |
27 |
1.9 |
1004 |
1009 |
336 |
0.9 |
1.9 |
0.0 |
9.5 |
Sunshine and showers |
|
|
3.7 |
10.5 |
0.3 |
78 |
96 |
6.8 |
7.1 |
8.3 |
2.5 |
1.6 |
8.5 |
22 |
3.3 |
2465 |
78.7 |
1006 |
1016 |
289 |
0.8 |
77.4 |
35.9 |
9.4 |
|
 |
|
|
UV Light
|
Month So Far
|
Year So Far
|
Recording Data
|
Time-Lapse Videos
|
World
Weather |
Met Office 5-Day
|
Humidity Calculation
|
Links |
