Weather in Castlebar in september 2025

The weather in Castlebar in september comes from statistical datas on the past years. You can view the weather statistics the entire 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
52°F

Fog

27%

Partly Cloudy

18%

Clear/Sunny

9%

Weather at 12pm
61°F

Partly Cloudy

27%

Clear/Sunny

12%

Moderate rain at times

4%

Weather at 6pm
58°F

Partly Cloudy

26%

Clear/Sunny

19%

Moderate rain at times

10%

Weather at 3am
52°F

Fog

22%

Moderate rain at times

21%

Partly Cloudy

19%

Cloudy

17%



Evolution of daily average temperature and precipitation in Castlebar in september

These charts show the evolution of average minimum/maximum temperatures as well as average daily precipitation volume in Castlebar in september.


The climate of Castlebar in september is tolerable

The climate in september in Castlebar is wet (with 2in of rainfall over 2 days). It should be noted an improvement from the previous month since in august it receives an average of 2.8in of rainfall over 3 days.

The climate is fairly cold here this month, but it is bearable by dressing cosy. The thermometer averaged maximum of 61°F. The seasonal minimum is 52°F. Thus, the mean temperature average in september in Castlebar is 58°F. Note that seasonal normals in contrast with those observed in Castlebar in september with a maximum record of 77°F in 2021 and a minimum record of 40°F in 2010. You can plan to have about 6 days with temperatures over 65°F, or 20% of time.

In september in Castlebar, the days on average last 12:42. Sunrise is at 06:11 and sets at 18:53.

With a correct weather, september is okay (but not good) to go in this locality.



September: another location in Ireland?

If you want to go to Ireland in september, there are destinations with better weather than Castlebar:

In september, Dublin, Cork, Ardmore, Dalkey Island, Rosslare and Tramore have good weather.

more information about Ireland's weather in september


Seasonal average climate and temperature of Castlebar in september

Check below seasonal norms These datas are generated 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 52°F
Highest record temperature 77°F
(2021)
Lowest record temperature 40°F
(2010)
Number of days at +65°F 6 day(s)
(20%)
Wind
Wind speed 21km/h
Wind temperature 50°F
Precipitation (rainfall)
Rainfall 2in
Number of days with rainfall 2 day(s)
(8%)
Record daily rainfall 1.1in
(2015)
Other climate data
Humidity 94%
Visibility 8.37km
Cloud cover 64%
UV index 4
Daily sunshine hours 10
Sunrise and sunset
Time of sunrise 06:11
Time of sunset 18:53
Length of day 12:42
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 Castlebar in september 2024:

01-09-2024
Patchy rain nearby
49°F to 67°F
02-09-2024
Patchy rain nearby
54°F to 58°F
03-09-2024
Patchy rain nearby
56°F to 59°F
04-09-2024
Patchy rain nearby
52°F to 56°F
05-09-2024
Overcast
47°F to 63°F
06-09-2024
Clear/Sunny
56°F to 72°F
07-09-2024
Clear/Sunny
56°F to 70°F
08-09-2024
Overcast
58°F to 61°F
09-09-2024
Patchy rain nearby
47°F to 59°F
10-09-2024
Patchy rain nearby
52°F to 56°F
11-09-2024
Patchy rain nearby
49°F to 54°F
12-09-2024
Patchy rain nearby
43°F to 54°F
13-09-2024
Light drizzle
40°F to 56°F
14-09-2024
Patchy rain nearby
56°F to 59°F
15-09-2024
Cloudy
52°F to 63°F
16-09-2024
Patchy rain nearby
49°F to 59°F
17-09-2024
Clear/Sunny
54°F to 68°F
18-09-2024
Clear/Sunny
49°F to 67°F
19-09-2024
Clear/Sunny
49°F to 68°F
20-09-2024
Clear/Sunny
50°F to 68°F
21-09-2024
Clear/Sunny
52°F to 67°F
22-09-2024
Patchy rain nearby
52°F to 65°F
23-09-2024
Cloudy
50°F to 59°F
24-09-2024
Patchy rain nearby
50°F to 56°F
25-09-2024
Patchy rain nearby
43°F to 54°F
26-09-2024
Patchy rain nearby
45°F to 50°F
27-09-2024
Patchy rain nearby
49°F to 50°F
28-09-2024
Patchy rain nearby
45°F to 56°F
29-09-2024
Light drizzle
47°F to 56°F
30-09-2024
Patchy rain nearby
50°F to 58°F

Map: other cities in Ireland in september

Cities near Castlebar:

Westport in septembertolerable weather
Ballinrobe in septembertolerable weather
Ballina in septembertolerable weather
Ballaghaderreen in septembertolerable weather
Tuam in septembertolerable weather
Ballycastle in septembertolerable weather
Oughterard in septembertolerable weather
Achill Island in septembertolerable weather
Connemara National Park in septembertolerable weather
Belmullet in septembertolerable weather
Galway in septembertolerable weather
Sligo in septembertolerable weather
Ireland in september: See full list of cities

Click over cities on the map for information about the weather in september.

Legend: Castlebar perfect weather good tolerable bad very bad


Weather data for Castlebar in september:

Weather data for Castlebar for september are derived from an average of the weather forecast since 2009 in Castlebar. There is a margin of error and these forecasts are to be considered as general information only. The weather in Castlebar 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 Castlebar.


Weather in august in Castlebar
Weather in october in Castlebar
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