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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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Average dry days
6
Dry days
Average rainy days
25
Rainy days
Average snowy days
0
Snow days
Average temperatures
17°/11°
Temperatures
Average wind speed
21 km/h
Avg max wind
Average humidity
87 %
Avg humidity

Belfast in August average weather

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Temperatures trend during August in 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
Overcast
19° /12° 0.3 mm 5
2 Aug. Moderate or heavy rain shower
Moderate or heavy rain shower
18° /10° 10.8 mm 4
3 Aug. Patchy rain possible
Patchy rain possible
17° /9° 0.6 mm 4
4 Aug. Patchy rain possible
Patchy rain possible
17° /9° 4.3 mm 4
5 Aug. Moderate or heavy rain shower
Moderate or heavy rain shower
18° /11° 16.3 mm 5
6 Aug. Moderate or heavy rain shower
Moderate or heavy rain shower
17° /8° 3.4 mm 4
7 Aug. Patchy rain possible
Patchy rain possible
17° /9° 1.1 mm 4
8 Aug. Cloudy
Cloudy
18° /9° 1.6 mm 4
9 Aug. Overcast
Overcast
19° /10° 0.4 mm 5
10 Aug. Patchy rain possible
Patchy rain possible
19° /12° 1.9 mm 4
11 Aug. Patchy rain possible
Patchy rain possible
19° /10° 1.3 mm 4
12 Aug. Moderate or heavy rain shower
Moderate or heavy rain shower
18° /12° 7 mm 4
13 Aug. Patchy rain possible
Patchy rain possible
18° /10° 1.4 mm 4
14 Aug. Moderate or heavy rain shower
Moderate or heavy rain shower
18° /9° 1.6 mm 4
15 Aug. Patchy rain possible
Patchy rain possible
17° /10° 7 mm 4
16 Aug. Patchy rain possible
Patchy rain possible
17° /8° 0.1 mm 4
17 Aug. Patchy rain possible
Patchy rain possible
18° /10° 0.2 mm 4
18 Aug. Heavy rain at times
Heavy rain at times
17° /11° 5.2 mm 4
19 Aug. Moderate or heavy rain shower
Moderate or heavy rain shower
18° /11° 18.5 mm 4
20 Aug. Moderate or heavy rain shower
Moderate or heavy rain shower
17° /11° 4 mm 4
21 Aug. Patchy rain possible
Patchy rain possible
17° /10° 3.2 mm 4
22 Aug. Patchy rain possible
Patchy rain possible
17° /11° 5.7 mm 4
23 Aug. Patchy rain possible
Patchy rain possible
17° /10° 4.6 mm 4
24 Aug. Overcast
Overcast
16° /8° 1.3 mm 4
25 Aug. Light rain shower
Light rain shower
14° /7° 2.8 mm 4
26 Aug. Patchy rain possible
Patchy rain possible
17° /9° 2.6 mm 4
27 Aug. Light drizzle
Light drizzle
17° /11° 1.6 mm 4
28 Aug. Mist
Mist
18° /8° 1.5 mm 4
29 Aug. Patchy rain possible
Patchy rain possible
16° /8° 0.5 mm 4
30 Aug. Light rain shower
Light rain shower
16° /7° 1.1 mm 4
31 Aug. Light rain shower
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.

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Location coordinates Where is Belfast?

Get accurate weather forecasts for Belfast, located at latitude 54.597 and longitude -5.925. Stay updated with localized weather information tailored for Belfast.

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