Merthyr Tydfil in august: average Weather, Temperature and Climate
Weather in Merthyr Tydfil in august 2025
The weather in Merthyr Tydfil in the month of august comes from statistical datas on the past years. You can view the weather statistics the entire month, but also by using the tabs for the beginning, the middle and the end of the month.
Average weather throughout august
tolerable weather
Weather at 6am
56°F
Fog
30% of time
20%
15%
15%
Weather at 12pm
63°F
Moderate rain at times
29% of time
26%
24%
16%
Weather at 6pm
61°F
Clear/Sunny
28% of time
26%
21%
21%
Weather at 3am
56°F
34%
19%
14%
14%
Evolution of daily average temperature and precipitation in Merthyr Tydfil in august
These charts show the evolution of average minimum/maximum temperatures as well as average daily precipitation volume in Merthyr Tydfil in august.
The climate of Merthyr Tydfil in august is tolerable
The weather in august in Merthyr Tydfil is wet (with 3.8in of precipitation over 6 days). This is better than the previous month since in july it receives an average of 3.9in of rainfall over 6 days.
The climate is quite fresh here this month, but it is bearable by dressing hot. Temperatures are up to 65°F. In the morning the temperature drops to 56°F. Thus, the mean temperature average on this month of august in Merthyr Tydfil is 59°F. Note that these seasonal averages are in contrast with those observed in Merthyr Tydfil in the month of august with a maximum record of 81°F in 2020 and a minimum record of 41°F in 2020. You can hope to have about 14 days with temperatures over 65°F, or 45% of time.
Day length in Merthyr Tydfil in august is 14:38. The sun rises at 04:59 and sets at 19:37.
With proper weather, this month is okay (but not the best) to go in this city.
Merthyr Tydfil: another month?
If you can push back the dates of your trip, we advise you to go in september to Merthyr Tydfil. more information
If you can push the dates of your trip to Merthyr Tydfil forward, the month of september has a better weather forecast than august. more information
August: another location in Wales?
If you want to go to Wales in august, there are destinations with better weather than Merthyr Tydfil:
In august, Cardiff, Conwy, Holyhead, Pembrokeshire, Swansea and Amlwch have good weather.
Seasonal average climate and temperature of Merthyr Tydfil in august
Check below seasonal norms These statistics are generated from the weather statements earlier years of the month of august.
| August | |||||
| Outside temperature | |||||
| Average temperature | 59°F | ||||
| Highest temperature | 65°F | ||||
| Lowest temperature | 56°F | ||||
| Highest record temperature | 81°F (2020) | ||||
| Lowest record temperature | 41°F (2020) | ||||
| Number of days at +65°F | 14 day(s) (45%) | ||||
| Wind | |||||
| Wind speed | 20km/h | ||||
| Wind temperature | 54°F | ||||
| Precipitation (rainfall) | |||||
| Rainfall | 3.8in | ||||
| Number of days with rainfall | 6 day(s) (18%) | ||||
| Record daily rainfall | 1.3in (2015) | ||||
| Other climate data | |||||
| Humidity | 94% | ||||
| Visibility | 8.09km | ||||
| Cloud cover | 57% | ||||
| UV index | 4 | ||||
| Daily sunshine hours | 12 | ||||
| Sunrise and sunset | |||||
| Time of sunrise | 04:59 | ||||
| Time of sunset | 19:37 | ||||
| Length of day | 14:38 | ||||
| Our opinion about the weather in august | |||||
| Our opinion at whereandwhen.net | tolerable | ||||
How was the weather last august?
Here is the day by day recorded weather in Merthyr Tydfil in august 2024:
63°F to 72°F
58°F to 68°F
56°F to 65°F
54°F to 65°F
56°F to 68°F
58°F to 63°F
56°F to 61°F
56°F to 63°F
56°F to 65°F
59°F to 68°F
58°F to 77°F
63°F to 72°F
56°F to 67°F
58°F to 65°F
58°F to 68°F
52°F to 67°F
50°F to 63°F
52°F to 65°F
56°F to 63°F
58°F to 61°F
50°F to 61°F
58°F to 63°F
52°F to 61°F
52°F to 61°F
50°F to 59°F
52°F to 63°F
56°F to 67°F
59°F to 67°F
52°F to 63°F
50°F to 67°F
54°F to 67°F
Map: other cities in Wales in august
Cities near Merthyr Tydfil:
| Brecon Beacons (National Park) in august | tolerable weather |
| Cardiff in august | good weather |
| Porthcawl in august | good weather |
| Barry in august | good weather |
| Swansea in august | good weather |
| Llanelli in august | good weather |
| Llandrindod Wells in august | bad weather |
| Carmarthen in august | good weather |
| Newtown in august | bad weather |
| Aberystwyth in august | tolerable weather |
| Pembrokeshire in august | good weather |
| Haverfordwest in august | good weather |
Click over cities on the map for information about the weather in august.
Merthyr Tydfil
perfect weather
good
tolerable
bad
very bad
Weather data for Merthyr Tydfil in august:
Weather data for Merthyr Tydfil for august are derived from an average of the weather forecast since 2009 in Merthyr Tydfil. There is a margin of error and these forecasts are to be considered as general information only. The weather in Merthyr Tydfil can vary slightly from year to year, but this data should limit surprises. So you can pack your bags or check for the best time in year to go to Merthyr Tydfil.