City of Belfast
August
Weather in City of Belfast for August 2025
Your guide to City of Belfast weather in August - trends and predictions
In general, the average temperature in City of 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.
City of 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
City of 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 City of Belfast
See the weather trend as well as the moving average line
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 City of 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 City of Belfast forecast closer to your planned date for the most up-to-date weather information.
City of Belfast in August - FAQ
What are the expected maximum and minimum temperatures in City of 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 City of Belfast during August?
Significant rainfall exceeding 128.1 mm is expected in City of 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 City of Belfast during August?
The average wind speed in City of Belfast during August is 21 km/h, suggesting breezy to windy conditions, depending on your activities.
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