Belfast in august: average Weather, Temperature and Climate
Weather in Belfast in august 2025
The weather in Belfast in august comes from statistical datas on the last years. You can view the weather statistics for all the month, but also navigating through the tabs for the beginning, the middle and the end of the month.
Average weather throughout august
tolerable weather
Weather at 6am
56°F
Partly Cloudy
25% of time
21%
17%
15%
Weather at 12pm
63°F
Moderate rain at times
38% of time
23%
18%
12%
Weather at 6pm
61°F
Moderate rain at times
47% of time
19%
13%
12%
Weather at 3am
54°F
25%
19%
18%
16%
Evolution of daily average temperature and precipitation in Belfast in august
These charts show the evolution of average minimum/maximum temperatures as well as average daily precipitation volume in Belfast in august.
The climate of Belfast in august is tolerable
the weather in Belfast in august is wet (with 5.9in of precipitation over 10 days). The weather is better from the previous month since in july it receives an average of 5.1in of rainfall over 9 days.
The climate is rather cool in that area august, but it is tolerable when dressing warm. Temperatures are up to 65°F. The minimum is 56°F. Thus, the mean temperature average on this month of august in Belfast is 59°F. Note that these seasonal averages are in contrast with those observed in Belfast in the month of august with a maximum record of 74°F in 2010 and a minimum record of 45°F in 2014. You can plan to have about 12 days with temperatures over 65°F, or 39% of the month.
Day length in Belfast in august is 14:55. Sunrise is at 05:00 and sets at 19:55.
With a correct climate, this month is okay (but not good) to go in this city.
August: another location in Northern Ireland?
If you want to go to Northern Ireland in august, there are destinations with better weather than Belfast:
In august, Donwpatrick, Annalong, Ballywalter, Bangor, Carrickfergus and Donaghadee have good weather.
Seasonal average climate and temperature of Belfast in august
Check below seasonal norms These statistics are set from the weather statements earlier years of august.
| August | |||||
| Outside temperature | |||||
| Average temperature | 59°F | ||||
| Highest temperature | 65°F | ||||
| Lowest temperature | 56°F | ||||
| Highest record temperature | 74°F (2010) | ||||
| Lowest record temperature | 45°F (2014) | ||||
| Number of days at +65°F | 12 day(s) (39%) | ||||
| Sea temperature | |||||
| Average sea temperature | 58°F | ||||
| Lowest sea temperature | 57°F | ||||
| Highest sea temperature | 59°F | ||||
| Wind | |||||
| Wind speed | 20km/h | ||||
| Wind temperature | 52°F | ||||
| Precipitation (rainfall) | |||||
| Rainfall | 5.9in | ||||
| Number of days with rainfall | 10 day(s) (32%) | ||||
| Record daily rainfall | 1.8in (2009) | ||||
| Other climate data | |||||
| Humidity | 94% | ||||
| Visibility | 8.6km | ||||
| Cloud cover | 59% | ||||
| UV index | 4 | ||||
| Daily sunshine hours | 12 | ||||
| Sunrise and sunset | |||||
| Time of sunrise | 05:00 | ||||
| Time of sunset | 19:55 | ||||
| Length of day | 14:55 | ||||
| Our opinion about the weather in august | |||||
| Our opinion at whereandwhen.net | tolerable | ||||
How was the weather last august?
Here is the day by day recorded weather in Belfast in august 2024:
59°F to 70°F
59°F to 68°F
49°F to 63°F
54°F to 61°F
61°F to 68°F
49°F to 63°F
56°F to 63°F
56°F to 63°F
56°F to 65°F
54°F to 67°F
52°F to 67°F
56°F to 65°F
58°F to 65°F
49°F to 67°F
52°F to 59°F
47°F to 59°F
54°F to 63°F
50°F to 65°F
50°F to 61°F
50°F to 59°F
50°F to 58°F
56°F to 63°F
50°F to 59°F
49°F to 59°F
49°F to 56°F
50°F to 63°F
58°F to 67°F
54°F to 63°F
49°F to 61°F
45°F to 63°F
50°F to 63°F
Map: other cities in Northern Ireland in august
Cities near Belfast:
| Castlereagh in august | tolerable weather |
| Newtownabbey in august | tolerable weather |
| Holywood in august | tolerable weather |
| Lisburn in august | bad weather |
| Carrickfergus in august | good weather |
| Newtownards in august | good weather |
| Ballyclare in august | tolerable weather |
| Bangor in august | good weather |
| Antrim in august | tolerable weather |
| Millisle in august | good weather |
| Donaghadee in august | good weather |
| Kircubbin in august | good weather |
Click over cities on the map for information about the weather in august.
Belfast
perfect weather
good
tolerable
bad
very bad
Weather data for Belfast in august:
Weather data for Belfast for august are derived from an average of the weather forecast since 2009 in Belfast. There is a margin of error and these forecasts are to be considered as general information only. The weather in Belfast can vary slightly from year to year, but this data should limit surprises. So you can pack your bags or check for the best time in year to go to Belfast.