Coleraine in september: average Weather, Temperature and Climate
Weather in Coleraine in september 2025
The weather in Coleraine in september comes from statistical datas on the past years. You can view the weather statistics the entire month, but also by using the tabs for the beginning, the middle and the end of the month.
Average weather throughout september
tolerable weather
Weather at 6am
54°F
Partly Cloudy
25% of time
24%
22%
17%
Weather at 12pm
59°F
Moderate rain at times
35% of time
22%
21%
15%
Weather at 6pm
58°F
Moderate rain at times
38% of time
21%
16%
15%
Weather at 3am
54°F
26%
24%
19%
19%
Evolution of daily average temperature and precipitation in Coleraine in september
These charts show the evolution of average minimum/maximum temperatures as well as average daily precipitation volume in Coleraine in september.
The climate of Coleraine in september is tolerable
In september in Coleraine, the climate is wet (with 4.1in of precipitation over 7 days). The weather is better from the previous month since in august it receives an average of 5.9in of rainfall over 10 days.
The climate is relatively cool in that area this month, but it is bearable by dressing hot. The high seasonal norm is 61°F. The minimum is 54°F. Thus, the mean temperature average on this month of september in Coleraine is 58°F. Note that seasonal normals in contrast with those observed in Coleraine in september with a maximum record of 70°F in 2021 and a minimum record of 41°F in 2010. You can hope to have about 3 days with temperatures over 65°F, or 10% of time.
On average, in Coleraine, the days of september last 12:44. Sunrise is at 05:59 and sets at 18:43.
With proper weather, the month of september is okay (but not good) to go in this locality in North Ireland.
September: another location in Northern Ireland?
If you want to go to Northern Ireland in september, there are destinations with better weather than Coleraine:
In september, Donwpatrick, Larne, Annalong, Bangor, Carrickfergus and Dundrum have good weather.
Seasonal average climate and temperature of Coleraine in september
Check below seasonal norms These statistics are compiled from the weather statements of the last years of the month of september.
| September | |||||
| Outside temperature | |||||
| Average temperature | 58°F | ||||
| Highest temperature | 61°F | ||||
| Lowest temperature | 54°F | ||||
| Highest record temperature | 70°F (2021) | ||||
| Lowest record temperature | 41°F (2010) | ||||
| Number of days at +65°F | 3 day(s) (10%) | ||||
| Sea temperature | |||||
| Average sea temperature | 58°F | ||||
| Lowest sea temperature | 57°F | ||||
| Highest sea temperature | 60°F | ||||
| Wind | |||||
| Wind speed | 26km/h | ||||
| Wind temperature | 50°F | ||||
| Precipitation (rainfall) | |||||
| Rainfall | 4.1in | ||||
| Number of days with rainfall | 7 day(s) (24%) | ||||
| Record daily rainfall | 1.1in (2017) | ||||
| Other climate data | |||||
| Humidity | 90% | ||||
| Visibility | 8.97km | ||||
| Cloud cover | 58% | ||||
| UV index | 4 | ||||
| Daily sunshine hours | 10 | ||||
| Sunrise and sunset | |||||
| Time of sunrise | 05:59 | ||||
| Time of sunset | 18:43 | ||||
| Length of day | 12:44 | ||||
| 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 Coleraine in september 2024:
58°F to 59°F
58°F to 59°F
56°F to 58°F
56°F to 58°F
56°F to 58°F
59°F to 61°F
59°F to 61°F
56°F to 58°F
56°F to 58°F
54°F to 58°F
52°F to 54°F
52°F to 54°F
50°F to 54°F
56°F to 61°F
58°F to 59°F
54°F to 61°F
58°F to 63°F
58°F to 61°F
56°F to 61°F
58°F to 59°F
58°F to 61°F
56°F to 59°F
54°F to 58°F
52°F to 56°F
50°F to 52°F
50°F to 54°F
52°F to 54°F
50°F to 56°F
52°F to 56°F
50°F to 54°F
Map: other cities in Northern Ireland in september
Cities near Coleraine:
| Portstewart in september | tolerable weather |
| Portrush in september | tolerable weather |
| Castlerock in september | tolerable weather |
| Ballymoney in september | tolerable weather |
| Limavady in september | tolerable weather |
| Ballycastle (Causeway Coast) in september | tolerable weather |
| Maghera in september | tolerable weather |
| Ballymena in september | tolerable weather |
| Glenariff in september | tolerable weather |
| Magherafelt in september | tolerable weather |
| Derry (Londonderry) in september | tolerable weather |
| Cookstown in september | tolerable weather |
Click over cities on the map for information about the weather in september.
Coleraine
perfect weather
good
tolerable
bad
very bad
Weather data for Coleraine in september:
Weather data for Coleraine for september are derived from an average of the weather forecast since 2009 in Coleraine. There is a margin of error and these forecasts are to be considered as general information only. The weather in Coleraine 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 Coleraine.