Swimming in Barmouth in september 2025: Average sea temperature in september and tide times in september 2025
Average sea temperature in Barmouth in september 2025.
In september, according to seasonal norms, the sea temperature in Barmouth is:
Minimum: 59°F
Average: 61°F
Maximum: 62°F
Other useful seasonal weather averages in september:
- Outside temperature: 51°F to 60°F
- Most common weather: "Cloudy"
- The wind blows at 5.6mph
- It rains a total of 4.9in, over 7 day(s).
Should we swim in Barmouth in september?
No... The water temperature in Barmouth in september is cold
Swimming in Barmouth in september is possible... with a wetsuit! Indeed, the water is cold at this time of year with an average sea temperature of 61°F (minimum: 59°F - maximum: 62°F).
Note also that in september, the climate is tolerable with an average outside temperature of 56°F, 4.9in of precipitation (over 7 days) and 94.23 % humidity.
Water and normal seasonal temperatures in Barmouth in september
| September | |||
| Average sea temperature | 61°F | ||
| Minimum sea temperature | 59°F | ||
| Maximum sea temperature | 62°F | ||
| Average outside temperature | 56°F | ||
| Maximum outside temperature | 61°F | ||
| Minimum outside temperature | 52°F | ||
| Wind speed | 11.2mph | ||
| Wind temperature | 49°F | ||
| Precipitation | 4.9in | ||
| Number of days of rain | 7 jour(s) (24%) | ||
| Humidity | 95% | ||
| Visibility in kilometers | 8.02km | ||
| Cloud cover | 59% | ||
| Our opinion | cold swimming |
Chart of the tides in september 2025
Tide times in september 2025 in Barmouth
Swim elsewhere in Wales in september
| City | Average T° | Min. T° | Max. T° | Our opinion | Cardiff in september | 62°F | 64°F | cold swimming | Pembrokeshire in september | 61°F | 63°F | cold swimming | Swansea in september | 62°F | 64°F | cold swimming | Llandudno in september | 61°F | 63°F | cold swimming |