Wales in august: average Weather, Temperature and Climate, Where to go?
Weather in Wales in august 2025
Here, you have access to the weather forecast for the month of august for most popular cities in Wales. These predictions are probabilities for the month of august from weather reports for many years. The percentage indicates the possibility of having the weather indicated.
Average weather in august in Cardiff
good weather
Weather at 6am
58°F
Partly Cloudy
25% of time
22%
21%
15%
Weather at 12pm
67°F
Partly Cloudy
34% of time
27%
21%
16%
Weather at 6pm
65°F
Clear/Sunny
34% of time
28%
19%
17%
Weather at 3am
58°F
25%
21%
19%
17%
Where to go in Wales in august?
Where to go in Wales in august: destination map
perfect weather
good
tolerable
bad
very bad
Where should you go in Wales in august when it comes to the weather?
Remember:
The climate in Wales in august ranges from good to tolerable depending on the region and city.
That month is not the best month to visit Wales. The weather in Cardiff, Snowdonia National Park, Holyhead, Pembrokeshire, Conwy and Swansea is ok but correct. The sun is not there all the time and you risk you to be soaked by rain frequently. However, if you don't plan a pool & relaxation holiday in Wales but rather city tours or hiking, this climate may be enough. In addition, there are certainly fewer tourists this month.
But it gets worse: in Brecon Beacons (National Park) and surrounding area where the climate is very bad. It is really not advisable to go to this area in august.
Climate in Wales in august
Climate in Cardiff in august
In the month of august, the mean temperature in Cardiff is 63°F (maximum temperature is 67°F and minimum temperature is 58°F). The climate quite pleasant there in this month. With 2.8in over 4 days, rainfall can happen during your stay. But this is moderate and it will not be continuous.
With proper weather, august is okay (but not good time) for traveling in this locality in Wales.
| August | |||
| Average temperature | 63°F | ||
| Highest temperature | 67°F | ||
| Lowest temperature | 58°F | ||
| Sea temperature | 62°F | ||
| Rainfall | 2.8in | ||
| Number of days with rainfall | 4 day(s) (13%) | ||
| Humidity | 91% | ||
| Daily sunshine hours | 13 | ||
| Cloud cover | 50% | ||
| Length of day | 14:36 | ||
| Our opinion at whereandwhen.net | good |
Climate in Brecon Beacons (National Park) in august
In the month of august, the mean temperature in Brecon Beacons (National Park) is 59°F (maximum temperature is 65°F and minimum temperature is 54°F). The climate is quite fresh in this location in the month of august, but it is liveable when dressing hot. With 4.4in over 7 days, you will experience some showers for your stay. But this is pretty reasonably and it will not be continuous.
With an unfavorable weather, the month of august is not recommended month to go there.
| August | |||
| Average temperature | 59°F | ||
| Highest temperature | 65°F | ||
| Lowest temperature | 54°F | ||
| Rainfall | 4.4in | ||
| Number of days with rainfall | 7 day(s) (22%) | ||
| Humidity | 96% | ||
| Daily sunshine hours | 12 | ||
| Cloud cover | 65% | ||
| Length of day | 14:39 | ||
| Our opinion at whereandwhen.net | tolerable |
Climate in Conwy in august
In the month of august, maximum temperature is 65°F and minimum temperature is 58°F (for an average temperature of 61°F). The climate is relatively cold in this location in this month, but it is liveable by dressing hot. With 4.8in over 7 days, rainfall can happen during your trip. But this is moderate and it will not be continuous.
With proper weather, august is okay (but not good time) for traveling in that area in Wales.
| August | |||
| Average temperature | 61°F | ||
| Highest temperature | 65°F | ||
| Lowest temperature | 58°F | ||
| Sea temperature | 62°F | ||
| Rainfall | 4.8in | ||
| Number of days with rainfall | 7 day(s) (24%) | ||
| Humidity | 90% | ||
| Daily sunshine hours | 13 | ||
| Cloud cover | 54% | ||
| Length of day | 14:47 | ||
| Our opinion at whereandwhen.net | good |
Climate in Holyhead in august
In the month of august, the mean temperature in Holyhead is 61°F (maximum temperature is 63°F and minimum temperature is 59°F). The climate is rather cold around this city in the month of august, but it is liveable when dressing cosy. With 6.2in over 10 days, you risk getting wet slightly throughout your vacations. But this is rather moderate and it is only of temporary showers.
With a correct climate, the month of august is okay (but not the best time) for traveling in this locality.
| August | |||
| Average temperature | 61°F | ||
| Highest temperature | 63°F | ||
| Lowest temperature | 59°F | ||
| Sea temperature | 60°F | ||
| Rainfall | 6.2in | ||
| Number of days with rainfall | 10 day(s) (33%) | ||
| Humidity | 87% | ||
| Daily sunshine hours | 13 | ||
| Cloud cover | 52% | ||
| Length of day | 14:47 | ||
| Our opinion at whereandwhen.net | good |
Climate in Pembrokeshire in august
In the month of august, the mean temperature in Pembrokeshire is 63°F (maximum temperature is 65°F and minimum temperature is 61°F). The climate is rather fresh there in this month, but it is liveable when dressing cosy. With 5.8in over 8 days, rain may occur for your trip. But this is pretty reasonably and you will not be too bothered by it.
With a correct weather, august is okay (but not the best time) for traveling in that area in Wales.
| August | |||
| Average temperature | 63°F | ||
| Highest temperature | 65°F | ||
| Lowest temperature | 61°F | ||
| Sea temperature | 62°F | ||
| Rainfall | 5.8in | ||
| Number of days with rainfall | 8 day(s) (27%) | ||
| Humidity | 87% | ||
| Daily sunshine hours | 13 | ||
| Cloud cover | 50% | ||
| Length of day | 14:37 | ||
| Our opinion at whereandwhen.net | good |
All cities in Wales in august
| Cardiff in august | good weather |
| Brecon Beacons (National Park) in august | tolerable weather |
| Conwy in august | good weather |
| Holyhead in august | good weather |
| Pembrokeshire in august | good weather |
| Snowdonia National Park in august | tolerable weather |
| Swansea in august | good weather |
| Aberystwyth in august | tolerable weather |
| Amlwch in august | good weather |
| Barmouth in august | tolerable weather |
| Barry in august | good weather |
| Buckley in august | good weather |
| Carmarthen in august | good weather |
| Fishguard in august | good weather |
| Haverfordwest in august | good weather |
| Llandrindod Wells in august | bad weather |
| Llandudno in august | good weather |
| Llanelli in august | good weather |
| Merthyr Tydfil in august | tolerable weather |
| Newtown in august | bad weather |
| Porthcawl in august | good weather |
Weather data for Wales in august:
Weather data for Wales in august is derived from an average of the weather forecast since 2009 in Wales. There is a margin of error and these forecasts are to be considered as general information only. The weather in Wales can vary slightly from year to year, but these predictions should limit surprises. So you can pack your bags and check when is the best time to go to Wales.