Belfast in January
Find out everything about the water temperature in Belfast in January. Average, minimum and maximum recorded temperatures as well as daily temperature in January for the last two years. Compare the current month's sea temperature data with other months of the year.
Water temperature in January
Minimum:
59.8 °F
Average:
63.3 °F
Maximum:
69.7 °F
Sea water temperature in Belfast in January
In the city of Belfast, the month of January is somewhat too cool for swimming. The minimum recorded temperature during this month was 59.8°F on January 8, 2017, with an average temperature being 63.3°F and a maximum temperature reaching 69.7°F on January 31, 2018.
| Date | 10 years average | 2024 | 2023 |
|---|---|---|---|
| Jan 1 | 62.2°F | 63.7°F | 64.1°F |
| Jan 2 | 62.3°F | 62.9°F | 64.6°F |
| Jan 3 | 62.5°F | 63.4°F | 64.3°F |
| Jan 4 | 62.4°F | 63.6°F | 64.2°F |
| Jan 5 | 62.3°F | 63.0°F | 64.2°F |
| Jan 6 | 62.4°F | 62.7°F | 63.9°F |
| Jan 7 | 62.7°F | 63.8°F | 63.9°F |
| Jan 8 | 62.8°F | 64.9°F | 65.1°F |
| Jan 9 | 63.0°F | 65.7°F | 64.7°F |
| Jan 10 | 63.2°F | 66.0°F | 64.0°F |
| Jan 11 | 63.3°F | 66.2°F | 63.8°F |
| Jan 12 | 63.2°F | 64.3°F | 63.8°F |
| Jan 13 | 63.1°F | 64.7°F | 63.1°F |
| Jan 14 | 63.0°F | 64.7°F | 62.7°F |
| Jan 15 | 63.1°F | 64.5°F | 63.4°F |
| Jan 16 | 63.2°F | 64.3°F | 63.0°F |
| Jan 17 | 63.0°F | 64.0°F | 63.2°F |
| Jan 18 | 63.1°F | 63.5°F | 64.3°F |
| Jan 19 | 63.3°F | 64.0°F | 65.7°F |
| Jan 20 | 63.4°F | 63.2°F | 65.4°F |
| Jan 21 | 63.3°F | 62.0°F | 65.3°F |
| Jan 22 | 63.7°F | 63.3°F | 65.9°F |
| Jan 23 | 63.9°F | 64.3°F | 65.6°F |
| Jan 24 | 64.1°F | 64.3°F | 65.4°F |
| Jan 25 | 64.1°F | 64.1°F | 64.8°F |
| Jan 26 | 64.0°F | 63.8°F | 64.3°F |
| Jan 27 | 64.1°F | 62.0°F | 65.4°F |
| Jan 28 | 64.0°F | 61.2°F | 65.1°F |
| Jan 29 | 64.2°F | 62.1°F | 65.3°F |
| Jan 30 | 64.5°F | 63.1°F | 66.7°F |
| Jan 31 | 64.6°F | 63.6°F | 66.3°F |
In an average year, Belfast offers no days when the water temperature is warm enough to swim comfortably.
The warmest water in Belfast was recorded on January 31, 2018, reaching a 69.7°F. While the coldest temperature occurred on August 12, 2015, dipping to 45.5°F. The average readings by season are 62.7°F in Winter, 58.9°F in Spring, 49.7°F in Summer, and 53.9°F in Autumn.
The average temperature in January is slightly warmer than December's average of 60.7°F. And in February, the temperature is expected to rise further, potentially reaching an average of 64.0°F.