Monthly Historical AveragesMerthyr Tydfil, UKL1
Average Temperature
High
14°
Feels 13
Low
6°
Feels 4
Average Precipitation
13 Days
78.1mm
0cm
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Daily Historical Averages
S
M
T
W
T
F
S
ForecastWednesday, May 20, 2026
Day
14°Feels 12
Wind
28 km/h W
Gust
41 km/h
Humidity
75%
P.O.P
90%
Rain
2-4 mm
Night
10°Feels 8
Wind
22 km/h SW
Gust
32 km/h
Humidity
100%
P.O.P
40%
Rain
<1 mm
Historical AveragesMay 20
High
Feels
Low
Feels
Precip Frequency
Total Daylight
Humidity