Belfast in July
Find out everything about the water temperature in Belfast in July. Average, minimum and maximum recorded temperatures as well as daily temperature in July for the last two years. Compare the current month's sea temperature data with other months of the year.
Water temperature in July
Minimum:
52.5 °F
Average:
57.7 °F
Maximum:
63.7 °F
Sea water temperature in Belfast in July
In the city of Belfast, the month of July is too cold for swimming. The minimum recorded temperature during this month was 52.5°F on July 2, 2016, with an average temperature being 57.7°F and a maximum temperature reaching 63.7°F on July 15, 2026.
| Date | 10 years average | 2026 | 2025 |
|---|---|---|---|
| Jul 1 | 56.1°F | 57.8°F | 58.0°F |
| Jul 2 | 55.9°F | 56.7°F | 57.8°F |
| Jul 3 | 55.9°F | 56.6°F | 57.9°F |
| Jul 4 | 56.0°F | 56.3°F | 58.2°F |
| Jul 5 | 56.0°F | 55.9°F | 57.9°F |
| Jul 6 | 56.1°F | 57.7°F | 57.7°F |
| Jul 7 | 56.4°F | 57.9°F | 57.7°F |
| Jul 8 | 56.7°F | 59.5°F | 58.1°F |
| Jul 9 | 57.0°F | 60.6°F | 58.0°F |
| Jul 10 | 57.1°F | 60.1°F | 58.4°F |
| Jul 11 | 57.2°F | 59.8°F | 59.5°F |
| Jul 12 | 57.5°F | 60.4°F | 60.9°F |
| Jul 13 | 57.8°F | 61.4°F | 61.9°F |
| Jul 14 | 58.1°F | 62.7°F | 62.0°F |
| Jul 15 | 58.3°F | 63.7°F | 62.1°F |
| Jul 16 | 58.2°F | 63.5°F | 61.5°F |
| Jul 17 | 58.3°F | 63.0°F | 61.6°F |
| Jul 18 | 58.3°F | 62.8°F | 61.8°F |
| Jul 19 | 58.5°F | 63.1°F | 61.5°F |
| Jul 20 | 58.5°F | 63.1°F | 61.0°F |
| Jul 21 | 58.4°F | 63.2°F | 60.6°F |
| Jul 22 | 58.3°F | 62.6°F | 60.2°F |
| Jul 23 | 58.3°F | 62.9°F | 59.8°F |
| Jul 24 | 58.4°F | 62.5°F | 59.5°F |
| Jul 25 | 58.4°F | 62.8°F | 59.2°F |
| Jul 26 | 58.5°F | 61.7°F | 58.9°F |
| Jul 27 | 58.6°F | 61.9°F | 58.6°F |
| Jul 28 | 58.7°F | 61.5°F | 59.0°F |
| Jul 29 | 58.7°F | 61.3°F | 58.9°F |
| Jul 30 | 58.7°F | 61.8°F | 58.8°F |
| Jul 31 | 58.7°F | 62.3°F | 58.8°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 July 15, 2026, reaching a 63.7°F. While the coldest temperature occurred on January 9, 2021, dipping to 42.4°F. The average readings by season are 47.7°F in Winter, 48.2°F in Spring, 57.1°F in Summer, and 55.8°F in Autumn.
The average temperature in July is slightly warmer than June's average of 55.1°F. And in August, the temperature is expected to rise further, potentially reaching an average of 58.6°F.