Belfast
August
Weather in Belfast for August 2025
Your guide to Belfast weather in August - trends and predictions
In general, the average temperature in Belfast at the beginning of August is 17.6 °C. As the month progressed, temperatures tended to moderately fall, reaching an average of 16.1 °C by the end of August.
Belfast experiences an exceptionally high level of rainfall in August, with more than 24 rainy days on average.
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6
Dry days
25
Rainy days
0
Snow days
17°/11°
Temperatures
21 km/h
Avg max wind
87 %
Avg humidity
Belfast in August average weather
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| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  19° | 2  18° | 3  17° | ||||
| 4 17° | 5 18° | 6 17° | 7 17° | 8  18° | 9 19° | 10 19° |
| 11 19° | 12 18° | 13 18° | 14 18° | 15 17° | 16 17° | 17 18° |
| 18  17° | 19 18° | 20 17° | 21 17° | 22 17° | 23 17° | 24 16° |
| 25 14° | 26 17° | 27  17° | 28  18° | 29 16° | 30 16° | 31 15° |
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Temperatures trend during August in Belfast
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August weather day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Aug. | Overcast | 19° /12° | 0.3 mm | 5 | |
| 2 Aug. | Moderate or heavy rain shower | 18° /10° | 10.8 mm | 4 | |
| 3 Aug. | Patchy rain possible | 17° /9° | 0.6 mm | 4 | |
| 4 Aug. | Patchy rain possible | 17° /9° | 4.3 mm | 4 | |
| 5 Aug. | Moderate or heavy rain shower | 18° /11° | 16.3 mm | 5 | |
| 6 Aug. | Moderate or heavy rain shower | 17° /8° | 3.4 mm | 4 | |
| 7 Aug. | Patchy rain possible | 17° /9° | 1.1 mm | 4 | |
| 8 Aug. | Cloudy | 18° /9° | 1.6 mm | 4 | |
| 9 Aug. | Overcast | 19° /10° | 0.4 mm | 5 | |
| 10 Aug. | Patchy rain possible | 19° /12° | 1.9 mm | 4 | |
| 11 Aug. | Patchy rain possible | 19° /10° | 1.3 mm | 4 | |
| 12 Aug. | Moderate or heavy rain shower | 18° /12° | 7 mm | 4 | |
| 13 Aug. | Patchy rain possible | 18° /10° | 1.4 mm | 4 | |
| 14 Aug. | Moderate or heavy rain shower | 18° /9° | 1.6 mm | 4 | |
| 15 Aug. | Patchy rain possible | 17° /10° | 7 mm | 4 | |
| 16 Aug. | Patchy rain possible | 17° /8° | 0.1 mm | 4 | |
| 17 Aug. | Patchy rain possible | 18° /10° | 0.2 mm | 4 | |
| 18 Aug. | Heavy rain at times | 17° /11° | 5.2 mm | 4 | |
| 19 Aug. | Moderate or heavy rain shower | 18° /11° | 18.5 mm | 4 | |
| 20 Aug. | Moderate or heavy rain shower | 17° /11° | 4 mm | 4 | |
| 21 Aug. | Patchy rain possible | 17° /10° | 3.2 mm | 4 | |
| 22 Aug. | Patchy rain possible | 17° /11° | 5.7 mm | 4 | |
| 23 Aug. | Patchy rain possible | 17° /10° | 4.6 mm | 4 | |
| 24 Aug. | Overcast | 16° /8° | 1.3 mm | 4 | |
| 25 Aug. | Light rain shower | 14° /7° | 2.8 mm | 4 | |
| 26 Aug. | Patchy rain possible | 17° /9° | 2.6 mm | 4 | |
| 27 Aug. | Light drizzle | 17° /11° | 1.6 mm | 4 | |
| 28 Aug. | Mist | 18° /8° | 1.5 mm | 4 | |
| 29 Aug. | Patchy rain possible | 16° /8° | 0.5 mm | 4 | |
| 30 Aug. | Light rain shower | 16° /7° | 1.1 mm | 4 | |
| 31 Aug. | Light rain shower | 15° /9° | 2.4 mm | 4 | |
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Important Notice
Our weather forecast for Belfast in August is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Belfast forecast closer to your planned date for the most up-to-date weather information.
Belfast in August - FAQ
What are the expected maximum and minimum temperatures in Belfast during August?
Enjoy moderate daytime temperatures of up to 17° and cooler nights around 11°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Belfast during August?
Significant rainfall exceeding 128.1 mm is expected in Belfast during August, occurring over more than 25 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Belfast during August?
The average wind speed in Belfast during August is 21 km/h, suggesting breezy to windy conditions, depending on your activities.
August rainfall patterns in Belfast
Explore the daily rainfall trends and prepare for Belfasts August weather 💧
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