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Weather in Westport for September 2025

Your guide to Westport weather in September - trends and predictions

    Temperatures

  • The forecast for the next days in Westport predicts temperatures to be around 15 °C, close to the historical average.

  • In general, the average temperature in Westport at the beginning of September is 15.9 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 11.7 °C by the end of September.

    • Rain 🌧️

  • Westport experiences moderate rainfall in September, with an average of 10 rainy days and a total precipitation of 42 mm.

Average dry days
20
Dry days
Average rainy days
10
Rainy days
Average snowy days
0
Snow days
Average temperatures
15°/9°
Temperatures
Average wind speed
19 km/h
Avg max wind
Average humidity
80 %
Avg humidity

Westport Weather September

Move between months or click on a day
August
October
Mon.Tue.Wed.Thu.Fri.Sat.Sun.
1
Patchy rain possible
17°
2
Overcast
15°
3
Patchy rain possible
15°
4
Patchy rain possible
15°
5
Sunny
17°
6
Patchy rain possible
17°
7
Moderate rain
15°
8
Patchy rain possible
15°
9
Moderate rain
17°
10
Moderate rain
13°
11
Patchy rain possible
13°
12
Patchy rain possible
14°
13
Patchy rain possible
14°
14
Moderate rain
16°
15
Patchy rain possible
14°
16
Patchy rain possible
13°
17
Patchy rain possible
19°
18
Patchy rain possible
17°
19
Partly cloudy
16°
20
Sunny
19°
21
Patchy rain possible
18°
22
Patchy rain possible
17°
23
Patchy rain possible
15°
24
Patchy rain possible
13°
25
Overcast
12°
26
Moderate rain at times
10°
27
Patchy rain possible
10°
28
Patchy rain possible
12°
29
Moderate or heavy rain shower
11°
30
Light rain shower
14°

Temperatures trend during September in Westport

See the weather trend as well as the moving average line

September weather in Westport day by day

Click on a date for more information
August October
Date Weather Temperatures Rain UV More
1 Sept. Patchy rain possible
Patchy rain possible
 17° /9° 3.5 mm 4
2 Sept. Overcast
Overcast
 15° /10° 0.7 mm 4
3 Sept. Patchy rain possible
Patchy rain possible
 15° /10° 3.9 mm 4
4 Sept. Patchy rain possible
Patchy rain possible
 15° /10° 0.6 mm 4
5 Sept. Sunny
Sunny
 17° /9° 0 mm 5
6 Sept. Patchy rain possible
Patchy rain possible
 17° /11° 4.4 mm 0.6
7 Sept. Moderate rain
Moderate rain
 15° /9° 5.2 mm 0.7
8 Sept. Patchy rain possible
Patchy rain possible
 15° /8° 1.6 mm 0.9
9 Sept. Moderate rain
Moderate rain
 17° /10° 5.2 mm 0.4
10 Sept. Moderate rain
Moderate rain
 13° /10° 6.8 mm 0.2
11 Sept. Patchy rain possible
Patchy rain possible
 13° /10° 2.3 mm 3
12 Sept. Patchy rain possible
Patchy rain possible
 14° /9° 1.1 mm 3
13 Sept. Patchy rain possible
Patchy rain possible
 14° /10° 2 mm 3
14 Sept. Moderate rain
Moderate rain
 16° /13° 5 mm 4
15 Sept. Patchy rain possible
Patchy rain possible
 14° /12° 0.3 mm 3
16 Sept. Patchy rain possible
Patchy rain possible
 13° /12° 4.4 mm 3
17 Sept. Patchy rain possible
Patchy rain possible
 19° /14° 4 mm 4
18 Sept. Patchy rain possible
Patchy rain possible
 17° /11° 0.1 mm 3
19 Sept. Partly cloudy
Partly cloudy
 16° /9° 0 mm 4
20 Sept. Sunny
Sunny
 19° /10° 0 mm 5
21 Sept. Patchy rain possible
Patchy rain possible
 18° /10° 0.2 mm 4
22 Sept. Patchy rain possible
Patchy rain possible
 17° /10° 1.5 mm 4
23 Sept. Patchy rain possible
Patchy rain possible
 15° /10° 0.7 mm 4
24 Sept. Patchy rain possible
Patchy rain possible
 13° /7° 0.4 mm 3
25 Sept. Overcast
Overcast
 12° /5° 0 mm 3
26 Sept. Moderate rain at times
Moderate rain at times
 10° /7° 2.5 mm 3
27 Sept. Patchy rain possible
Patchy rain possible
 10° /8° 0.9 mm 3
28 Sept. Patchy rain possible
Patchy rain possible
 12° /7° 0.1 mm 3
29 Sept. Moderate or heavy rain shower
Moderate or heavy rain shower
 11° /7° 10.1 mm 3
30 Sept. Light rain shower
Light rain shower
 14° /9° 1.4 mm 3
Next
Important Notice
Our weather forecast for Westport in September is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Westport forecast closer to your planned date for the most up-to-date weather information.
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Westport in September - FAQ

What are the expected maximum and minimum temperatures in Westport during September?
During September, expect a variety of temperatures with highs around 15° and lows near 9°, suitable for diverse activities and preferences.
How much rainfall should be expected in Westport during September?
In September, Westport can expect light to moderate rainfall, totaling 42 mm across approximately 10 days. Occasional showers are possible, and planning ahead for them could be helpful.
What are the typical wind conditions in Westport during September?
The average wind speed in Westport during September is 19 km/h, suggesting breezy to windy conditions, depending on your activities.

September rainfall patterns in Westport

Explore the daily rainfall trends and prepare for Westports September weather 💧

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Location coordinates Where is Westport?

Get accurate weather forecasts for Westport, located at latitude 53.8 and longitude -9.517. Stay updated with localized weather information tailored for Westport.

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