Can I swim in Portraine in September? All information about water temperature in Irish Sea in September. Historical data, comparison and analysis.
Analysis of historical data on water temperature in Portraine in September
Average temperature in Irish Sea in Portraine in September is 58°F. Water of this temperature is considered cold enough. Dipping or immersion in such water is possible only for a short time. Staying in such water for more than two hours can lead to loss of consciousness.
Minimum water temperature in Portraine in September is 55°F, maximum - 62°F. In recent years, at the beginning of the month, the temperature value here is at around 59°F, and by the end of the month the water warms up to 58°F.
Average water temperature in the first decade is 58°F, in the middle of the month - 59°F, and at the end - 58°F.
Table of water temperature values in Portraine in September in recent years
| Day | 2024 | 2023 | 2022 | 2021 |
| 1 | 59°F | 59°F | 59°F | 60°F |
| 2 | 59°F | 59°F | 59°F | 59°F |
| 3 | 59°F | 59°F | 59°F | 60°F |
| 4 | 59°F | 59°F | 59°F | 60°F |
| 5 | 59°F | 59°F | 59°F | 57°F |
| 6 | 59°F | 59°F | 59°F | 57°F |
| 7 | 59°F | 60°F | 57°F | 59°F |
| 8 | 59°F | 57°F | 59°F | 59°F |
| 9 | 59°F | 57°F | 59°F | 59°F |
| 10 | 59°F | 57°F | 59°F | 59°F |
| 11 | 60°F | 57°F | 57°F | 59°F |
| 12 | 60°F | 57°F | 59°F | 59°F |
| 13 | 62°F | 57°F | 59°F | 59°F |
| 14 | 62°F | 57°F | 57°F | 59°F |
| 15 | 60°F | 59°F | 59°F | 59°F |
| 16 | 60°F | 57°F | 57°F | 59°F |
| 17 | 60°F | 57°F | 59°F | 59°F |
| 18 | 59°F | 57°F | 59°F | 59°F |
| 19 | 59°F | 60°F | 59°F | 59°F |
| 20 | 59°F | 60°F | 59°F | 59°F |
| 21 | 59°F | 60°F | 57°F | 57°F |
| 22 | 59°F | 60°F | 57°F | 57°F |
| 23 | 60°F | 60°F | 59°F | 59°F |
| 24 | 60°F | 60°F | 57°F | 59°F |
| 25 | 59°F | 60°F | 57°F | 59°F |
| 26 | 57°F | 60°F | 57°F | 59°F |
| 27 | 59°F | 60°F | 57°F | 59°F |
| 28 | 59°F | 60°F | 59°F | 57°F |
| 29 | 57°F | 59°F | 57°F | 57°F |
| 30 | 59°F | 59°F | 57°F | 57°F |
Water temperature in neighboring resorts
Details of the water temperature today in Portraine and forecast for the next week, see the link:
seatemperature.net/current/ireland/portraine-leinster-ireland-sea-temperature
