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St-Athan (nearest observation site to Mountain Ash)

Sunday (Sunday 17 December 2017)
20:00 21:00 22:00 23:00
Overcast Fog Overcast Mist
Temperature (°C)
10.2 ° 9.9 ° 10.0 ° 9.7 °
Show detail Show detail
Wind direction, speed & gust (mph) Expand
W 18 31 WNW 15 WNW 15 WNW 10
Visibility (E = Excellent, VG = Very Good, G = Good, M = Moderate, P = Poor, VP = Very Poor) Expand
P VP M M
Humidity Expand
99% 99% 99% 99%
Pressure (hPa) Expand
1021 1022 1022 1023
Pressure Tendency (F = Falling, R = Rising, S = Steady) Expand
R R R R
Sunrise: 08:15 Sunset: 16:04 Moon phase: New
Monday (Monday 18 December 2017)
00:00 01:00 02:00 03:00 04:00 05:00 06:00 07:00 08:00 09:00 10:00 11:00 12:00 13:00 14:00 15:00 16:00 17:00 18:00 19:00 20:00
Overcast Overcast Partly cloudy night Clear night Clear night Clear night Clear night Clear night Clear night Sunny day Sunny day Sunny day Sunny day Sunny day Sunny day Drizzle Sunny day Clear night Clear night Clear night Mist
Temperature (°C)
9.2 ° 8.1 ° 6.6 ° 6.5 ° 5.8 ° 6.5 ° 3.8 ° 3.4 ° 4.1 ° 3.2 ° 4.6 ° 7.3 ° 9.0 ° 9.2 ° 9.7 ° 7.7 ° 6.8 ° 5.4 ° 4.1 ° 3.3 ° 3.3 °
Show detail Show detail
Wind direction, speed & gust (mph) Expand
N 3 N 7 NW 6 NNW 6 NNW 3 NW 6 NNW 3 NE 3 N 3 N 5 N 5 W 1 W 1 W 2 SW 3 WSW 3 W 1 WSW 2 NE 2 NE 2 NNE 2
Visibility (E = Excellent, VG = Very Good, G = Good, M = Moderate, P = Poor, VP = Very Poor) Expand
VG VG VG VG VG VG VG G VG G VG G G P P P P M G G M
Humidity Expand
90% 83% 89% 89% 84% 80% 83% 93% 86% 89% 82% 82% 73% 70% 67% 74% 84% 93% 94% 92% 94%
Pressure (hPa) Expand
1024 1024 1025 1026 1026 1027 1027 1028 1029 1030 1030 1031 1031 1031 1031 1031 1032 1032 1033 1033 1034
Pressure Tendency (F = Falling, R = Rising, S = Steady) Expand
R R R R R R R R R R R R R R R R R R R R R
Sunrise: 08:16 Sunset: 16:04 Moon phase: New

– = No Data

Issued at:

Extremes

Wales extremes

Parameter Location Value
Highest maximum temperature Rhyl 12.1 °C
Lowest maximum temperature Tredegar Bryn Bach Park No 2 8.8 °C
Lowest minimum temperature Usk No 2 -2.4 °C
Highest rainfall Porthmadog 12.4 mm
Sunniest Aberdaron 0.1 hours

UK extremes

Parameter Location Value
Highest maximum temperature Derrylincornahoule 12.4 °C
Lowest maximum temperature Kinbrace 4.6 °C
Lowest minimum temperature Topcliffe -6.9 °C
Highest rainfall Kinlochewe 19.0 mm
Sunniest Manston 2.6 hours

About extremes

Highest maximum temperature - (0900 to 2100 on the date shown)

Lowest maximum temperature - (0900 to 2100 on the date shown)

Lowest minimum temperature - (2100 on the previous day to 0900 on the date shown)

Highest rainfall -(2100 on the previous day to 2100 on the date shown)

Sunniest - (2100 on the previous day to 2100 on the date shown)

The information shown is initial data as it is received; observations are subject to final quality control after publication on this website. This is particularly the case for rainfall totals during snow events.

Issued at:

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