As of 21:22 BST

Weather in Merthyr Vale / Ynysowen

+20°

Merthyr Vale / Ynysowen, Saturday, 8 August, 21:22

Overcast. Feels like 19°C. High 25°C, low 10°C.

Pressure1016 mb

Wind2 mph SW

Humidity56%

Visibility6.2 mi

Dew point11°C

Detailed hourly forecast

Sun, 09+12 ° /26 °

+26 °

Merthyr Vale / Ynysowen, Sunday, 9 August

Partly cloudy. High 26°C, low 12°C.

Pressure1014 mb

Wind10 mph W

Humidity29%

Visibility6.2 mi

Dew point7°C

Mon, 10+12 ° /27 °

+27 °

Merthyr Vale / Ynysowen, Monday, 10 August

Overcast. High 27°C, low 12°C.

Pressure1021 mb

Wind2 mph W

Humidity29%

Visibility6.2 mi

Dew point5°C

Tue, 11+11 ° /29 °

+29 °

Merthyr Vale / Ynysowen, Tuesday, 11 August

Mainly clear. High 29°C, low 11°C.

Pressure1024 mb

Wind11 mph SE

Humidity35%

Visibility6.2 mi

Dew point8°C

Wed, 12+13 ° /34 °

+34 °

Merthyr Vale / Ynysowen, Wednesday, 12 August

Overcast. High 34°C, low 13°C.

Pressure1022 mb

Wind8 mph SE

Humidity21%

Visibility6.2 mi

Dew point5°C

Thu, 13+19 ° /36 °

+36 °

Merthyr Vale / Ynysowen, Thursday, 13 August

Mainly clear. High 36°C, low 19°C.

Pressure1017 mb

Wind13 mph S

Humidity11%

Visibility—

Dew point-1°C

Fri, 14+15 ° /28 °

+28 °

Merthyr Vale / Ynysowen, Friday, 14 August

Clear sky. High 28°C, low 15°C.

Pressure1017 mb

Wind15 mph W

Humidity47%

Visibility—

Dew point14°C

Sat, 15+15 ° /23 °

2.2

+23 °

Merthyr Vale / Ynysowen, Saturday, 15 August

Light rain. High 23°C, low 15°C.

Pressure1016 mb

Wind6 mph N

Humidity64%

Visibility—

Dew point15°C

Sun, 16+14 ° /23 °

3.1

+23 °

Merthyr Vale / Ynysowen, Sunday, 16 August

Light rain. High 23°C, low 14°C.

Pressure1019 mb

Wind8 mph NW

Humidity93%

Visibility—

Dew point15°C

Mon, 17+13 ° /19 °

2.1

+19 °

Merthyr Vale / Ynysowen, Monday, 17 August

Light rain. High 19°C, low 13°C.

Pressure1013 mb

Wind15 mph SW

Humidity98%

Visibility—

Dew point15°C

Tue, 18+11 ° /21 °

+21 °

Merthyr Vale / Ynysowen, Tuesday, 18 August

Overcast. High 21°C, low 11°C.

Pressure1014 mb

Wind17 mph NW

Humidity45%

Visibility—

Dew point8°C

Wed, 19+9 ° /21 °

+21 °

Merthyr Vale / Ynysowen, Wednesday, 19 August

Overcast. High 21°C, low 9°C.

Pressure1015 mb

Wind17 mph W

Humidity34%

Visibility—

Dew point3°C

Thu, 20+10 ° /22 °

+22 °

Merthyr Vale / Ynysowen, Thursday, 20 August

Mainly clear. High 22°C, low 10°C.

Pressure1013 mb

Wind12 mph W

Humidity38%

Visibility—

Dew point5°C

Fri, 21+9 ° /21 °

+21 °

Merthyr Vale / Ynysowen, Friday, 21 August

Overcast. High 21°C, low 9°C.

Pressure1014 mb

Wind11 mph N

Humidity36%

Visibility—

Dew point4°C

Sat, 22+12 ° /22 °

+22 °

Merthyr Vale / Ynysowen, Saturday, 22 August

Light rain. High 22°C, low 12°C.

Pressure1019 mb

Wind11 mph E

Humidity37%

Visibility—

Dew point6°C

Sun, 23+12 ° /23 °

+23 °

Merthyr Vale / Ynysowen, Sunday, 23 August

Overcast. High 23°C, low 12°C.

Pressure1020 mb

Wind12 mph W

Humidity38%

Visibility—

Dew point6°C

Questions about the month ahead

How accurate is a month-long forecast?

The first 16 days come from weather models — highly reliable for the first 3–5 days, gradually less so after that. Days 17 to 30 for Merthyr Vale / Ynysowen are built from climate averages over the last 60 years, so they show typical weather for those dates rather than a specific forecast.

What does "above average" mean?

We compare the forecast with the climate average for exactly the same calendar days, calculated from 60 years of observations. The difference shows how the coming month compares with a typical one.

Where do the 66-year records come from?

These are real historical extremes recorded in Merthyr Vale / Ynysowen since 1960: the highest and lowest temperature for each calendar date, with the year it happened.

How often is the 30-day forecast updated?

The forecast portion refreshes every hour. The climate portion is based on long-term data and stays stable.