Larne in september: average Weather, Temperature and Climate
Weather in Larne in september 2025
The weather in Larne in the month of september comes from statistical datas on the past years. You can view the weather statistics for all the month, but also by using the tabs for the beginning, the middle and the end of the month.
Average weather throughout september
good weather
Weather at 6am
54°F
Partly Cloudy
31% of time
19%
19%
19%
Weather at 12pm
59°F
Partly Cloudy
28% of time
24%
23%
18%
Weather at 6pm
58°F
Moderate rain at times
32% of time
24%
17%
17%
Weather at 3am
54°F
32%
23%
20%
18%
Evolution of daily average temperature and precipitation in Larne in september
These charts show the evolution of average minimum/maximum temperatures as well as average daily precipitation volume in Larne in september.
The climate of Larne in september is good
the weather in Larne in september is wet (with 4.1in of rainfall over 7 days). It should be noted an improvement from the previous month since in august it receives an average of 6.3in of precipitation over 10 days.
The climate is rather cold in this location september, but it is endurable by dressing hot. The high seasonal norm is 61°F. The seasonal minimum is 54°F. Thus, the mean temperature average on this month of september in Larne is 58°F. Note that seasonal normals are in contrast with those observed in Larne in september with a maximum record of 68°F in 2013 and a minimum record of 43°F in 2012. You can expect to have about 2 days with temperatures up to 65°F, or 7% of the month.
On this month of september, day length in Larne is generally 12:43. Sunrise is at 05:56 and sets at 18:39.
With proper weather, this month is okay (but not good) to go in Larne.
Seasonal average climate and temperature of Larne in september
Check below seasonal norms These statistics are generated from the weather statements of the past years of the month of september.
| September | |||||
| Outside temperature | |||||
| Average temperature | 58°F | ||||
| Highest temperature | 61°F | ||||
| Lowest temperature | 54°F | ||||
| Highest record temperature | 68°F (2013) | ||||
| Lowest record temperature | 43°F (2012) | ||||
| Number of days at +65°F | 2 day(s) (7%) | ||||
| Sea temperature | |||||
| Average sea temperature | 58°F | ||||
| Lowest sea temperature | 57°F | ||||
| Highest sea temperature | 59°F | ||||
| Wind | |||||
| Wind speed | 25km/h | ||||
| Wind temperature | 50°F | ||||
| Precipitation (rainfall) | |||||
| Rainfall | 4.1in | ||||
| Number of days with rainfall | 7 day(s) (22%) | ||||
| Record daily rainfall | 1.8in (2013) | ||||
| Other climate data | |||||
| Humidity | 90% | ||||
| Visibility | 9.04km | ||||
| Cloud cover | 55% | ||||
| UV index | 4 | ||||
| Daily sunshine hours | 11 | ||||
| Sunrise and sunset | |||||
| Time of sunrise | 05:56 | ||||
| Time of sunset | 18:39 | ||||
| Length of day | 12:43 | ||||
| Our opinion about the weather in september | |||||
| Our opinion at whereandwhen.net | good | ||||
How was the weather last september?
Here is the day by day recorded weather in Larne in september 2024:
56°F to 61°F
58°F to 61°F
50°F to 59°F
50°F to 58°F
52°F to 61°F
58°F to 65°F
56°F to 63°F
58°F to 63°F
52°F to 59°F
52°F to 56°F
49°F to 54°F
49°F to 54°F
43°F to 54°F
54°F to 63°F
56°F to 61°F
50°F to 61°F
56°F to 63°F
54°F to 59°F
54°F to 61°F
54°F to 61°F
54°F to 61°F
54°F to 61°F
52°F to 59°F
52°F to 58°F
49°F to 52°F
50°F to 52°F
49°F to 52°F
45°F to 54°F
50°F to 56°F
50°F to 52°F
Map: other cities in Northern Ireland in september
Cities near Larne:
| Carrickfergus in september | good weather |
| Ballyclare in september | tolerable weather |
| Newtownabbey in september | tolerable weather |
| Holywood in september | tolerable weather |
| Bangor in september | good weather |
| Glenariff in september | tolerable weather |
| Ballymena in september | tolerable weather |
| Belfast in september | tolerable weather |
| Antrim in september | tolerable weather |
| Donaghadee in september | tolerable weather |
| Newtownards in september | good weather |
| Castlereagh in september | tolerable weather |
Click over cities on the map for information about the weather in september.
Larne
perfect weather
good
tolerable
bad
very bad
Weather data for Larne in september:
Weather data for Larne for september are derived from an average of the weather forecast since 2009 in Larne. There is a margin of error and these forecasts are to be considered as general information only. The weather in Larne 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 Larne.