Can I swim in Portmarnock in October? All information about water temperature in Irish Sea in October. Historical data, comparison and analysis.
Analysis of historical data on water temperature in Portmarnock in October
Average temperature in Irish Sea in Portmarnock in October is 57°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 Portmarnock in October is 53°F, maximum - 60°F. In recent years, at the beginning of the month, the temperature value here is at around 57°F, and by the end of the month the water warms up to 55°F.
Average water temperature in the first decade is 57°F, in the middle of the month - 56°F, and at the end - 56°F.
Table of water temperature values in Portmarnock in October in recent years
| Day | 2024 | 2023 | 2022 | 2021 |
| 1 | 57°F | 59°F | 57°F | 57°F |
| 2 | 59°F | 59°F | 57°F | 57°F |
| 3 | 57°F | 59°F | 57°F | 57°F |
| 4 | 59°F | 57°F | 57°F | 59°F |
| 5 | 57°F | 59°F | 57°F | 57°F |
| 6 | 59°F | 59°F | 57°F | 59°F |
| 7 | 59°F | 57°F | 57°F | 59°F |
| 8 | 57°F | 57°F | 57°F | 57°F |
| 9 | 57°F | 57°F | 57°F | 57°F |
| 10 | 57°F | 59°F | 57°F | 57°F |
| 11 | 57°F | 57°F | 55°F | 57°F |
| 12 | 57°F | 57°F | 57°F | 57°F |
| 13 | 57°F | 57°F | 55°F | 57°F |
| 14 | 59°F | 57°F | 57°F | 55°F |
| 15 | 59°F | 57°F | 55°F | 55°F |
| 16 | 57°F | 57°F | 55°F | 55°F |
| 17 | 57°F | 57°F | 55°F | 57°F |
| 18 | 57°F | 59°F | 55°F | 57°F |
| 19 | 57°F | 57°F | 55°F | 57°F |
| 20 | 55°F | 57°F | 55°F | 57°F |
| 21 | 57°F | 57°F | 57°F | 57°F |
| 22 | 57°F | 57°F | 55°F | 57°F |
| 23 | 57°F | 57°F | 55°F | 57°F |
| 24 | 55°F | 57°F | 55°F | 57°F |
| 25 | 57°F | 57°F | 55°F | 57°F |
| 26 | 55°F | 57°F | 55°F | 57°F |
| 27 | 55°F | 57°F | 55°F | 57°F |
| 28 | 55°F | 55°F | 55°F | 57°F |
| 29 | 55°F | 57°F | 55°F | 57°F |
| 30 | 55°F | 57°F | 55°F | 57°F |
| 31 | 55°F | 55°F | 55°F | 57°F |
Water temperature in neighboring resorts
Details of the water temperature today in Portmarnock and forecast for the next week, see the link:
seatemperature.net/current/ireland/portmarnock-leinster-ireland-sea-temperature
