Ballycastle (Causeway Coast) in september: average Weather, Temperature and Climate
Weather in Ballycastle (Causeway Coast) in september 2025
The weather in Ballycastle (Causeway Coast) in the month of september comes from statistical datas on the last years. You can view the weather statistics for the whole month, but also by clicking on the tabs for the beginning, the middle and the end of the month.
Average weather throughout september
tolerable weather
Weather at 6am
54°F
Moderate rain at times
33% of time
21%
18%
16%
Weather at 12pm
59°F
Moderate rain at times
43% of time
20%
15%
14%
Weather at 6pm
58°F
Moderate rain at times
44% of time
18%
16%
14%
Weather at 3am
54°F
29%
25%
20%
16%
Evolution of daily average temperature and precipitation in Ballycastle (Causeway Coast) in september
These charts show the evolution of average minimum/maximum temperatures as well as average daily precipitation volume in Ballycastle (Causeway Coast) in september.
The climate of Ballycastle (Causeway Coast) in september is tolerable
the weather in Ballycastle (Causeway Coast) in september is wet (with 5.2in of precipitation over 9 days). This is better than the previous month since in august it receives an average of 7.4in of precipitation over 13 days.
The climate is relatively cold around this city the month of september, but it is liveable by dressing hot. The high seasonal norm is 59°F. In the morning the temperature drops to 54°F. Thus, the mean temperature average in september in Ballycastle (Causeway Coast) is 58°F. Note that these seasonal averages are in contrast with those observed in Ballycastle (Causeway Coast) in september with a maximum record of 68°F in 2021 and a minimum record of 41°F in 2020. You can plan to have about 2 days with temperatures over 65°F, or 7% of the month.
On average, in Ballycastle (Causeway Coast), the days of september last 12:43. Sunrise is at 05:58 and sets at 18:41.
With a correct climate, the month of september is okay (but not the best) to go in this city.
September: another location in Northern Ireland?
If you want to go to Northern Ireland in september, there are destinations with better weather than Ballycastle (Causeway Coast):
In september, Donwpatrick, Larne, Annalong, Bangor, Carrickfergus and Dundrum have good weather.
Seasonal average climate and temperature of Ballycastle (Causeway Coast) in september
Check below seasonal norms These statistics are compiled from the weather statements earlier years of the month of september.
| September | |||||
| Outside temperature | |||||
| Average temperature | 58°F | ||||
| Highest temperature | 59°F | ||||
| Lowest temperature | 54°F | ||||
| Highest record temperature | 68°F (2021) | ||||
| Lowest record temperature | 41°F (2020) | ||||
| Number of days at +65°F | 2 day(s) (7%) | ||||
| Sea temperature | |||||
| Average sea temperature | 58°F | ||||
| Lowest sea temperature | 56°F | ||||
| Highest sea temperature | 59°F | ||||
| Wind | |||||
| Wind speed | 27km/h | ||||
| Wind temperature | 50°F | ||||
| Precipitation (rainfall) | |||||
| Rainfall | 5.2in | ||||
| Number of days with rainfall | 9 day(s) (31%) | ||||
| Record daily rainfall | 2.1in (2021) | ||||
| Other climate data | |||||
| Humidity | 89% | ||||
| Visibility | 8.98km | ||||
| Cloud cover | 57% | ||||
| UV index | 4 | ||||
| Daily sunshine hours | 11 | ||||
| Sunrise and sunset | |||||
| Time of sunrise | 05:58 | ||||
| Time of sunset | 18:41 | ||||
| Length of day | 12:43 | ||||
| Our opinion about the weather in september | |||||
| Our opinion at whereandwhen.net | tolerable | ||||
How was the weather last september?
Here is the day by day recorded weather in Ballycastle (Causeway Coast) in september 2024:
56°F to 59°F
52°F to 58°F
50°F to 58°F
50°F to 56°F
50°F to 59°F
56°F to 67°F
56°F to 65°F
56°F to 58°F
52°F to 56°F
50°F to 56°F
49°F to 52°F
49°F to 50°F
43°F to 52°F
52°F to 61°F
52°F to 59°F
49°F to 61°F
58°F to 65°F
54°F to 63°F
52°F to 61°F
52°F to 61°F
54°F to 61°F
54°F to 59°F
52°F to 54°F
50°F to 54°F
47°F to 49°F
47°F to 49°F
49°F to 50°F
45°F to 54°F
49°F to 54°F
49°F to 50°F
Map: other cities in Northern Ireland in september
Cities near Ballycastle (Causeway Coast):
| Glenariff in september | tolerable weather |
| Ballymoney in september | tolerable weather |
| Portrush in september | tolerable weather |
| Coleraine in september | tolerable weather |
| Portstewart in september | tolerable weather |
| Castlerock in september | tolerable weather |
| Ballymena in september | tolerable weather |
| Larne in september | good weather |
| Limavady in september | tolerable weather |
| Maghera in september | tolerable weather |
| Ballyclare in september | tolerable weather |
| Magherafelt in september | tolerable weather |
Click over cities on the map for information about the weather in september.
Ballycastle (Causeway Coast)
perfect weather
good
tolerable
bad
very bad
Weather data for Ballycastle (Causeway Coast) in september:
Weather data for Ballycastle (Causeway Coast) for september are derived from an average of the weather forecast since 2009 in Ballycastle (Causeway Coast). There is a margin of error and these forecasts are to be considered as general information only. The weather in Ballycastle (Causeway Coast) 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 Ballycastle (Causeway Coast).