News
Storm Arwen now starting to abate
Storm Arwen is clearing the UK with winds gradually easing though further areas of rain, sleet and at times snow will affect the country.
Read moreTreharris (Merthyr Tydfil) weather
Find a forecast
Forecast days
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Today. Maximum daytime temperature: 5 degrees Celsius; Minimum nighttime temperature: -2 degrees Celsius. Clear changing to cloudy in the afternoon. Sunrise: 07:52; Sunset: 16:09. UV: Low; Pollution: Low; No pollen data.
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Monday 29 November. Maximum daytime temperature: 4 degrees Celsius; Minimum nighttime temperature: 2 degrees Celsius. Cloudy. Sunrise: 07:54; Sunset: 16:09. UV: Low; Pollution: Low; No pollen data.
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Tuesday 30 November. Maximum daytime temperature: 10 degrees Celsius; Minimum nighttime temperature: 6 degrees Celsius. Light showers changing to overcast by late morning. Sunrise: 07:55; Sunset: 16:08. UV: Low; Pollution: Low; No pollen data.
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Wednesday 1 December. Maximum daytime temperature: 7 degrees Celsius; Minimum nighttime temperature: 2 degrees Celsius. Cloudy changing to sunny intervals by lunchtime. Sunrise: 07:57; Sunset: 16:07. UV: Low; Pollution: Low; No pollen data.
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Thursday 2 December. Maximum daytime temperature: 5 degrees Celsius; Minimum nighttime temperature: 2 degrees Celsius. Clear changing to cloudy in the afternoon. Sunrise: 07:58; Sunset: 16:07. UV: Low; Pollution: Low; No pollen data.
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Friday 3 December. Maximum daytime temperature: 10 degrees Celsius; Minimum nighttime temperature: 5 degrees Celsius. Light rain changing to cloudy by nighttime. Sunrise: 08:00; Sunset: 16:06. UV: Low;
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Saturday 4 December. Maximum daytime temperature: 7 degrees Celsius; Minimum nighttime temperature: 4 degrees Celsius. Partly cloudy changing to sunny intervals by late morning. Sunrise: 08:01; Sunset: 16:05. UV: Low;
Seven day forecast for Treharris
Today (28 November 2021)
at
| Time | 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 |
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| Chance of precipitation | <5% | <5% | <5% | <5% | <5% | <5% | <5% | <5% | <5% | <5% | <5% | <5% | 10% | <5% | <5% | <5% | <5% | <5% | <5% | <5% |
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Temperature
°C
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| Temperature in degrees Celsius |
0°
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1°
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1°
|
0°
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0°
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1°
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2°
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4°
|
4°
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4°
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4°
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4°
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3°
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2°
|
2°
|
2°
|
2°
|
1°
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1°
|
1°
|
| Feels like temperature in degrees Celsius | -3° | -3° | -3° | -3° | -3° | -2° | -1° | 0° | 1° | 1° | 2° | 2° | 1° | 0° | 0° | 0° | -1° | -2° | -2° | -3° |
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Wind direction and speed
mph
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| Wind direction and speed in miles per hour |
NW
5
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NW
8
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NW
8
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NW
7
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NW
5
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NW
6
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NW
7
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NW
8
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NW
8
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NW
8
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NW
8
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NW
7
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NW
6
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NW
6
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NW
7
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NW
7
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NNW
7
|
N
7
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N
8
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NNW
7
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| Wind gust in miles per hour | 19 | 21 | 22 | 19 | 16 | 18 | 17 | 16 | 17 | 17 | 16 | 16 | 16 | 15 | 16 | 17 | 18 | 19 | 20 | 19 |
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Visibility
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| Visibility | VG | E | E | E | VG | VG | E | E | E | E | E | E | VG | VG | VG | VG | VG | VG | VG | VG |
| Humidity | 68% | 68% | 68% | 70% | 76% | 73% | 71% | 69% | 69% | 70% | 72% | 72% | 78% | 85% | 85% | 86% | 87% | 87% | 86% | 87% |
| UV | - | - | - | - | - | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | - | - | - | - | - | - | - |
Monday (29 November 2021)
at
| 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 |
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| Chance of precipitation | <5% | <5% | <5% | <5% | <5% | <5% | <5% | <5% | <5% | <5% | 10% | 10% | 10% | 10% | 10% | 10% | 10% | 10% | 10% | 10% | 10% | 10% | 10% | 10% |
|
Temperature
°C
|
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| Temperature in degrees Celsius |
0°
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-1°
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-1°
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-1°
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-1°
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0°
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0°
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0°
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0°
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1°
|
2°
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3°
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4°
|
4°
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4°
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4°
|
3°
|
3°
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3°
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3°
|
3°
|
4°
|
4°
|
5°
|
| Feels like temperature in degrees Celsius | -3° | -3° | -4° | -4° | -4° | -3° | -3° | -3° | -2° | -1° | 0° | 1° | 2° | 2° | 2° | 2° | 2° | 1° | 1° | 1° | 1° | 2° | 2° | 2° |
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Wind direction and speed
mph
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| Wind direction and speed in miles per hour |
NNW
6
|
NNW
5
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NNW
5
|
NNW
4
|
NNW
5
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NNW
5
|
NNW
5
|
NNW
4
|
W
3
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NNE
3
|
NW
3
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NW
3
|
WNW
3
|
WNW
3
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WNW
4
|
WNW
3
|
WNW
3
|
NW
4
|
WNW
4
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WNW
4
|
WNW
5
|
WNW
6
|
W
6
|
WNW
8
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| Wind gust in miles per hour | 18 | 17 | 16 | 15 | 13 | 13 | 11 | 10 | 8 | 7 | 7 | 8 | 7 | 8 | 9 | 9 | 10 | 10 | 11 | 11 | 14 | 17 | 16 | 20 |
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Visibility
|
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| Visibility | VG | VG | VG | VG | VG | VG | VG | VG | VG | VG | VG | VG | VG | VG | G | G | G | G | M | M | M | M | M | M |
| Humidity | 86% | 87% | 87% | 86% | 84% | 82% | 81% | 84% | 83% | 80% | 77% | 74% | 72% | 74% | 83% | 86% | 90% | 91% | 92% | 94% | 94% | 95% | 96% | 96% |
| UV | - | - | - | - | - | - | - | - | - | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | - | - | - | - | - | - | - |
Tuesday (30 November 2021)
at
| Time | 00:00 | 03:00 | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|---|---|
| Weather symbol |
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| Chance of precipitation | 10% | 10% | 30% | 10% | 10% | 20% | 30% | 90% |
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Temperature
°C
|
||||||||
| Temperature in degrees Celsius |
6°
|
7°
|
7°
|
8°
|
9°
|
9°
|
9°
|
10°
|
| Feels like temperature in degrees Celsius | 3° | 3° | 4° | 5° | 6° | 6° | 6° | 6° |
|
Wind direction and speed
mph
|
||||||||
| Wind direction and speed in miles per hour |
W
9
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WNW
12
|
W
12
|
W
13
|
W
15
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WSW
16
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WSW
19
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WSW
19
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| Wind gust in miles per hour | 21 | 26 | 25 | 26 | 29 | 32 | 38 | 39 |
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Visibility
|
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| Visibility | M | M | G | G | G | G | M | M |
| Humidity | 96% | 95% | 95% | 95% | 92% | 91% | 93% | 94% |
| UV | - | - | - | 1 | 1 | 1 | - | - |
Wednesday (1 December 2021)
at
| Time | 00:00 | 03:00 | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|---|---|
| Weather symbol |
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| Chance of precipitation | 80% | 20% | 10% | 10% | 10% | 10% | 10% | <5% |
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Temperature
°C
|
||||||||
| Temperature in degrees Celsius |
9°
|
8°
|
6°
|
6°
|
7°
|
6°
|
4°
|
4°
|
| Feels like temperature in degrees Celsius | 6° | 4° | 3° | 2° | 3° | 2° | 1° | 0° |
|
Wind direction and speed
mph
|
||||||||
| Wind direction and speed in miles per hour |
W
17
|
WNW
14
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WNW
13
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WNW
12
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WNW
14
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WNW
13
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NW
12
|
NW
12
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| Wind gust in miles per hour | 34 | 28 | 26 | 24 | 28 | 26 | 23 | 24 |
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Visibility
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| Visibility | M | G | VG | G | G | G | G | VG |
| Humidity | 93% | 90% | 89% | 89% | 82% | 84% | 87% | 86% |
| UV | - | - | - | 1 | 1 | 1 | - | - |
Thursday (2 December 2021)
at
| Time | 00:00 | 03:00 | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|---|---|
| Weather symbol |
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| Chance of precipitation | <5% | <5% | <5% | <5% | <5% | 10% | 10% | 10% |
|
Temperature
°C
|
||||||||
| Temperature in degrees Celsius |
4°
|
3°
|
2°
|
2°
|
5°
|
4°
|
2°
|
2°
|
| Feels like temperature in degrees Celsius | 0° | -1° | -2° | -2° | 1° | 1° | -1° | 0° |
|
Wind direction and speed
mph
|
||||||||
| Wind direction and speed in miles per hour |
NNW
12
|
NNW
11
|
NNW
11
|
NW
10
|
NW
11
|
NW
8
|
WNW
6
|
W
6
|
| Wind gust in miles per hour | 24 | 23 | 22 | 20 | 23 | 16 | 13 | 12 |
|
Visibility
|
||||||||
| Visibility | VG | VG | VG | VG | VG | VG | VG | VG |
| Humidity | 84% | 80% | 77% | 76% | 69% | 71% | 81% | 82% |
| UV | - | - | - | 1 | 1 | 1 | - | - |
Friday (3 December 2021)
at
| Time | 00:00 | 03:00 | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|---|---|
| Weather symbol |
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| Chance of precipitation | 20% | 20% | 50% | 50% | 50% | 50% | 50% | 50% |
|
Temperature
°C
|
||||||||
| Temperature in degrees Celsius |
3°
|
4°
|
6°
|
7°
|
9°
|
8°
|
8°
|
7°
|
| Feels like temperature in degrees Celsius | 0° | 1° | 2° | 4° | 6° | 5° | 5° | 4° |
|
Wind direction and speed
mph
|
||||||||
| Wind direction and speed in miles per hour |
WSW
8
|
WSW
10
|
WSW
11
|
WSW
12
|
WSW
14
|
WSW
14
|
W
14
|
W
14
|
| Wind gust in miles per hour | 16 | 21 | 23 | 24 | 28 | 28 | 28 | 29 |
|
Visibility
|
||||||||
| Visibility | G | G | M | M | M | G | G | G |
| Humidity | 87% | 91% | 92% | 93% | 92% | 91% | 91% | 90% |
| UV | - | - | - | 1 | 1 | 1 | - | - |
Saturday (4 December 2021)
at
| Time | 00:00 | 03:00 | 06:00 | 09:00 | 12:00 | 15:00 | 18:00 | 21:00 |
|---|---|---|---|---|---|---|---|---|
| Weather symbol |
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| Chance of precipitation | 20% | 20% | 10% | 10% | 10% | 10% | 10% | 10% |
|
Temperature
°C
|
||||||||
| Temperature in degrees Celsius |
6°
|
6°
|
5°
|
5°
|
6°
|
6°
|
5°
|
4°
|
| Feels like temperature in degrees Celsius | 2° | 1° | 0° | 1° | 2° | 2° | 1° | 0° |
|
Wind direction and speed
mph
|
||||||||
| Wind direction and speed in miles per hour |
W
14
|
W
15
|
W
14
|
W
14
|
WNW
15
|
WNW
14
|
WNW
13
|
WNW
13
|
| Wind gust in miles per hour | 29 | 30 | 29 | 29 | 31 | 29 | 26 | 26 |
|
Visibility
|
||||||||
| Visibility | G | VG | VG | VG | VG | VG | VG | VG |
| Humidity | 88% | 87% | 85% | 82% | 78% | 80% | 83% | 85% |
| UV | - | - | - | 1 | 1 | 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:
Frosty overnight with winds easing.
This Evening and Tonight:
Some coastal showers persisting across west Wales, otherwise a lot of dry, clear weather to be had. Winds will continue to ease, with a widespread frost developing inland. Feeling cold. Minimum temperature -5 °C.
Sunday:
Some coastal showers persisting across west Wales, otherwise a lot of dry, clear weather to be had. Winds will continue to ease, with a widespread frost developing inland. Feeling cold. Maximum temperature 7 °C.
Outlook for Monday to Wednesday:
Cloudy but mostly dry on Monday. Windier again by Tuesday with outbreaks of rain, but also feeling a bit milder. Blustery and showery on Wednesday.
Updated:
UK long range weather forecast
Showers on Thursday, easing across western areas through the day, wintry across northeastern areas down to lower levels, possibly wintry showers in the southeast. Temperatures below average. A warmer air mass bringing showers, some heavy, on Friday and continuing into the weekend. Strong winds expected, and any snowfall confined to higher ground. Continually unsettled through the rest of this period with spells of wet and windy weather, interspersed with brighter interludes accompanied with showers. Likely the wettest conditions to be in the west and northwest, and drier conditions in the south towards the end of the period. Often windy with a risk of gales at times, especially in the north and northwest. Often mild into the week, with the potential for brief colder interludes at times.
Updated:
Overall, through this period it is expected to be unsettled and changeable with milder and wetter than average conditions for most, bringing a risk of stormy conditions. Perhaps turning more settled in southern regions for a time nearer the start of this period, which will increase the risk of frost and fog when skies clear overnight. Temperatures on the milder side for much of this period, but some short lived colder spells are possible.
Updated:
