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Climate change continues to be evident across UK
The UK’s climate has continued to warm, with 2020 the first year to have temperature, rain and sunshine rankings all in the top 10.
Read moreTreharris (Merthyr Tydfil) weather
Find a forecast
Forecast days
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Today. Maximum daytime temperature: 20 degrees Celsius; Minimum nighttime temperature: 13 degrees Celsius. Sunny intervals changing to cloudy by early evening. Sunrise: 05:40; Sunset: 20:57. UV: High; Pollution: Low; Pollen: Low.
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Thursday 5 August. Maximum daytime temperature: 17 degrees Celsius; Minimum nighttime temperature: 14 degrees Celsius. Heavy rain changing to thunder in the afternoon. Sunrise: 05:42; Sunset: 20:56. UV: Moderate; Pollution: Low; Pollen: Low.
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Friday 6 August. Maximum daytime temperature: 17 degrees Celsius; Minimum nighttime temperature: 13 degrees Celsius. Thunder changing to light showers by early evening. Sunrise: 05:43; Sunset: 20:54. UV: Moderate; Pollution: Low; Pollen: Low.
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Saturday 7 August. Maximum daytime temperature: 17 degrees Celsius; Minimum nighttime temperature: 12 degrees Celsius. Light rain changing to partly cloudy by nighttime. Sunrise: 05:45; Sunset: 20:52. UV: High; Pollution: Low; Pollen: Low.
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Sunday 8 August. Maximum daytime temperature: 17 degrees Celsius; Minimum nighttime temperature: 12 degrees Celsius. Sunny intervals changing to light showers by lunchtime. Sunrise: 05:46; Sunset: 20:50. UV: Moderate; Pollution: Low; Pollen: Low.
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Monday 9 August. Maximum daytime temperature: 18 degrees Celsius; Minimum nighttime temperature: 13 degrees Celsius. Cloudy changing to sunny intervals by late morning. Sunrise: 05:48; Sunset: 20:49. UV: Moderate;
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Tuesday 10 August. Maximum daytime temperature: 19 degrees Celsius; Minimum nighttime temperature: 14 degrees Celsius. Drizzle changing to cloudy in the afternoon. Sunrise: 05:50; Sunset: 20:47. UV: Moderate;
Seven day forecast for Treharris
Today (4 August 2021)
| Time | Now | 18:00 | 19:00 | 20:00 | 21:00 | 22:00 | 23:00 |
|---|---|---|---|---|---|---|---|
| Weather symbol |
|
|
|
|
|
|
|
| Chance of precipitation | <5% | <5% | <5% | <5% | <5% | <5% | <5% |
| Temperature in degrees Celsius |
20°
|
20°
|
19°
|
17°
|
16°
|
15°
|
14°
|
| Feels like temperature in degrees Celsius | 18° | 19° | 18° | 17° | 16° | 15° | 15° |
| Wind direction and speed in miles per hour |
SW
9
|
SW
7
|
WSW
6
|
W
5
|
W
4
|
W
3
|
WSW
1
|
| Wind gust in miles per hour | 12 | 12 | 11 | 11 | 10 | 10 | 4 |
| Visibility | VG | VG | VG | VG | VG | VG | G |
| Humidity | 57% | 57% | 62% | 65% | 69% | 73% | 82% |
| UV | 3 | 2 | 1 | 1 | - | - | - |
Thursday (5 August 2021)
| Time | 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 | 21:00 | 22:00 | 23:00 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Weather symbol |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Chance of precipitation | <5% | <5% | <5% | <5% | 10% | 10% | 10% | 50% | 90% | 90% | ≥95% | ≥95% | 90% | 90% | 90% | 90% | 70% | 70% | 10% | 30% | 80% | 30% | 60% | 50% |
| Temperature in degrees Celsius |
14°
|
14°
|
13°
|
14°
|
14°
|
14°
|
14°
|
14°
|
14°
|
14°
|
14°
|
14°
|
15°
|
15°
|
15°
|
16°
|
16°
|
16°
|
16°
|
16°
|
15°
|
15°
|
15°
|
15°
|
| Feels like temperature in degrees Celsius | 15° | 14° | 13° | 14° | 13° | 13° | 13° | 13° | 13° | 12° | 12° | 13° | 13° | 13° | 13° | 14° | 15° | 15° | 15° | 15° | 14° | 14° | 14° | 14° |
| Wind direction and speed in miles per hour |
S
1
|
SSE
2
|
SSE
2
|
SE
3
|
SSE
5
|
SSE
6
|
SSE
7
|
SSE
10
|
SSE
11
|
SSE
13
|
SSE
12
|
SSE
12
|
SSE
13
|
S
14
|
S
12
|
S
12
|
SSW
9
|
SW
9
|
SW
9
|
SW
9
|
SW
10
|
SW
8
|
SW
7
|
SW
9
|
| Wind gust in miles per hour | 4 | 6 | 9 | 10 | 13 | 14 | 17 | 21 | 23 | 27 | 26 | 26 | 28 | 29 | 25 | 24 | 21 | 21 | 19 | 20 | 21 | 19 | 18 | 21 |
| Visibility | G | G | G | G | G | G | G | G | M | M | M | M | M | M | P | VP | G | M | G | G | G | G | G | G |
| Humidity | 85% | 87% | 89% | 89% | 92% | 94% | 92% | 92% | 93% | 95% | 94% | 93% | 94% | 95% | 96% | 95% | 93% | 92% | 91% | 90% | 94% | 94% | 95% | 95% |
| UV | - | - | - | - | - | - | 1 | 1 | 1 | 2 | 2 | 2 | 2 | 2 | 3 | 3 | 3 | 2 | 2 | 1 | 1 | - | - | - |
Friday (6 August 2021)
| Time | 00:00 | 01:00 | 04:00 | 07:00 | 10:00 | 13:00 | 16:00 | 19:00 | 22:00 |
|---|---|---|---|---|---|---|---|---|---|
| Weather symbol |
|
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|
|
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|
|
|
| Chance of precipitation | 80% | 80% | 60% | 70% | 70% | 60% | 60% | 40% | 20% |
| Temperature in degrees Celsius |
15°
|
15°
|
15°
|
14°
|
15°
|
16°
|
15°
|
15°
|
13°
|
| Feels like temperature in degrees Celsius | 14° | 13° | 14° | 13° | 13° | 13° | 12° | 12° | 11° |
| Wind direction and speed in miles per hour |
SSW
9
|
SW
9
|
WSW
7
|
WSW
11
|
WSW
14
|
WSW
17
|
WSW
17
|
WSW
15
|
SW
12
|
| Wind gust in miles per hour | 21 | 21 | 20 | 26 | 28 | 35 | 35 | 31 | 25 |
| Visibility | G | G | G | G | M | VG | G | G | G |
| Humidity | 95% | 96% | 95% | 93% | 90% | 83% | 85% | 86% | 91% |
| UV | - | - | - | 1 | 4 | 5 | 4 | 1 | - |
Saturday (7 August 2021)
| Time | 01:00 | 04:00 | 07:00 | 10:00 | 13:00 | 16:00 | 19:00 | 22:00 |
|---|---|---|---|---|---|---|---|---|
| Weather symbol |
|
|
|
|
|
|
|
|
| Chance of precipitation | 40% | 50% | 50% | 40% | 40% | 40% | 40% | 10% |
| Temperature in degrees Celsius |
13°
|
13°
|
13°
|
15°
|
16°
|
16°
|
15°
|
14°
|
| Feels like temperature in degrees Celsius | 11° | 11° | 11° | 13° | 14° | 14° | 13° | 12° |
| Wind direction and speed in miles per hour |
SW
12
|
SW
11
|
SW
10
|
SW
10
|
WSW
12
|
WSW
14
|
W
12
|
WSW
10
|
| Wind gust in miles per hour | 24 | 21 | 19 | 22 | 26 | 28 | 24 | 19 |
| Visibility | M | M | M | M | G | G | G | G |
| Humidity | 93% | 95% | 95% | 86% | 80% | 77% | 85% | 91% |
| UV | - | - | 1 | 3 | 6 | 4 | 1 | - |
Sunday (8 August 2021)
| Time | 01:00 | 04:00 | 07:00 | 10:00 | 13:00 | 16:00 | 19:00 | 22:00 |
|---|---|---|---|---|---|---|---|---|
| Weather symbol |
|
|
|
|
|
|
|
|
| Chance of precipitation | <5% | 10% | <5% | 10% | 40% | 40% | 40% | 10% |
| Temperature in degrees Celsius |
13°
|
12°
|
12°
|
15°
|
16°
|
16°
|
15°
|
13°
|
| Feels like temperature in degrees Celsius | 11° | 11° | 11° | 13° | 14° | 14° | 13° | 12° |
| Wind direction and speed in miles per hour |
W
9
|
W
9
|
W
9
|
WSW
12
|
WSW
14
|
WSW
14
|
WSW
12
|
WSW
7
|
| Wind gust in miles per hour | 19 | 19 | 18 | 25 | 29 | 29 | 23 | 15 |
| Visibility | G | G | G | G | G | G | G | G |
| Humidity | 92% | 92% | 92% | 82% | 75% | 73% | 80% | 92% |
| UV | - | - | 1 | 3 | 4 | 4 | 1 | - |
Monday (9 August 2021)
| Time | 01:00 | 04:00 | 07:00 | 10:00 | 13:00 | 16:00 | 19:00 | 22:00 |
|---|---|---|---|---|---|---|---|---|
| Weather symbol |
|
|
|
|
|
|
|
|
| Chance of precipitation | 10% | 10% | 10% | 10% | 10% | 10% | 10% | 10% |
| Temperature in degrees Celsius |
13°
|
13°
|
13°
|
15°
|
17°
|
17°
|
16°
|
14°
|
| Feels like temperature in degrees Celsius | 12° | 12° | 12° | 14° | 15° | 15° | 15° | 13° |
| Wind direction and speed in miles per hour |
WSW
7
|
WSW
7
|
WSW
6
|
WSW
10
|
WSW
12
|
WSW
12
|
WSW
11
|
WSW
7
|
| Wind gust in miles per hour | 14 | 14 | 13 | 20 | 25 | 26 | 22 | 14 |
| Visibility | G | G | G | G | G | G | G | G |
| Humidity | 95% | 95% | 95% | 85% | 76% | 76% | 81% | 93% |
| UV | - | - | 1 | 3 | 5 | 3 | 1 | - |
Tuesday (10 August 2021)
| Time | 01:00 | 04:00 | 07:00 | 10:00 | 13:00 | 16:00 | 19:00 | 22:00 |
|---|---|---|---|---|---|---|---|---|
| Weather symbol |
|
|
|
|
|
|
|
|
| Chance of precipitation | 20% | 50% | 30% | 50% | 50% | 20% | 10% | 30% |
| Temperature in degrees Celsius |
14°
|
14°
|
14°
|
16°
|
17°
|
18°
|
17°
|
16°
|
| Feels like temperature in degrees Celsius | 13° | 13° | 13° | 15° | 16° | 16° | 16° | 15° |
| Wind direction and speed in miles per hour |
SW
7
|
SW
7
|
SW
7
|
SW
9
|
SW
11
|
SW
11
|
SW
10
|
SW
8
|
| Wind gust in miles per hour | 14 | 14 | 14 | 20 | 23 | 23 | 20 | 16 |
| Visibility | G | M | M | G | G | G | G | M |
| Humidity | 95% | 96% | 96% | 89% | 81% | 80% | 85% | 91% |
| UV | - | - | 1 | 2 | 4 | 3 | 1 | - |
weather map
Treharris
Detailed weather map
Forecast for HH:mm, EEE
Updated HH:mm (ZZZZ) on EEE dd MMM yyyy
Wales weather forecast
Headline:
Scattered showers fading overnight before rain returns at dawn.
This Evening and Tonight:
Scattered showers will fade through the evening to leave a dry night for many. Cloudy skies and some possible fog patches giving a milder night than last night. Outbreaks of heavy rain are possible towards dawn. Minimum temperature 9 °C.
Thursday:
Heavy outbreaks of rain will continue through the morning as a band of rain pushes eastward across the country, accompanied by blustery winds, particularly in coastal locations. Maximum temperature 19 °C.
Outlook for Friday to Sunday:
Persistent showers continuing through Friday and Saturday, locally heavy or torrential with thundery outbreaks and some hail possible. Winds becoming blustery and feeling cooler. Becoming drier with fewer showers Sunday.
Updated:
UK long range weather forecast
Sunny spells and showers for many areas at the start of this period, with most frequent showers probably in the north and west. By the middle of next week there is an increasing likelihood of thicker cloud bringing rain to northwestern areas, together with stronger winds. These more unsettled conditions are likely to spread slowly southeastwards through the latter part of next week. Beyond this it is likely to remain changeable; confidence is low in terms of detail, but most places will likely see showers or longer spells of rain, interspersed with some drier, more settled periods. Some strong winds are possible at times, especially in the northwest. Temperatures are most likely to be around average, perhaps warm in the east and southeast.
Updated:
Although confidence is very low through this period, a continuation of changeable conditions is most likely. Some more settled weather may develop, particularly towards the north and northeast of the UK. Temperatures are likely to be above average, with the potential for hotter weather later in the month with rainfall most likely below average.
Updated:
