Mayo County (Westport)
September
Weather in Mayo County for September 2025
Your guide to Mayo County weather in September - trends and predictions
The forecast for the next days in Mayo County predicts temperatures to be around 15 °C, close to the historical average.
In general, the average temperature in Mayo County 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.
Mayo County experiences moderate rainfall in September, with an average of 10 rainy days and a total precipitation of 42 mm.
Temperatures
Rain 🌧️
20
Dry days
10
Rainy days
0
Snow days
15°/9°
Temperatures
19 km/h
Avg max wind
80 %
Avg humidity
Mayo County Weather September
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Temperatures trend during September in Mayo County
See the weather trend as well as the moving average line
September weather in Mayo County day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Sept. |  Patchy rain possible | 17° /9° | 3.5 mm | 4 | |
| 2 Sept. |  Overcast | 15° /10° | 0.7 mm | 4 | |
| 3 Sept. | Patchy rain possible | 15° /10° | 3.9 mm | 4 | |
| 4 Sept. | Patchy rain possible | 15° /10° | 0.6 mm | 4 | |
| 5 Sept. |  Sunny | 17° /9° | 0 mm | 5 | |
| 6 Sept. | Patchy rain possible | 17° /11° | 4.4 mm | 0.6 | |
| 7 Sept. |  Moderate rain | 15° /9° | 5.2 mm | 0.7 | |
| 8 Sept. | Patchy rain possible | 15° /8° | 1.6 mm | 0.9 | |
| 9 Sept. | Moderate rain | 17° /10° | 5.2 mm | 0.4 | |
| 10 Sept. | Moderate rain | 13° /10° | 6.8 mm | 0.2 | |
| 11 Sept. | Patchy rain possible | 13° /10° | 2.3 mm | 3 | |
| 12 Sept. | Patchy rain possible | 14° /9° | 1.1 mm | 3 | |
| 13 Sept. | Patchy rain possible | 14° /10° | 2 mm | 3 | |
| 14 Sept. | Moderate rain | 16° /13° | 5 mm | 4 | |
| 15 Sept. | Patchy rain possible | 14° /12° | 0.3 mm | 3 | |
| 16 Sept. | Patchy rain possible | 13° /12° | 4.4 mm | 3 | |
| 17 Sept. | Patchy rain possible | 19° /14° | 4 mm | 4 | |
| 18 Sept. | Patchy rain possible | 17° /11° | 0.1 mm | 3 | |
| 19 Sept. |  Partly cloudy | 16° /9° | 0 mm | 4 | |
| 20 Sept. | Sunny | 19° /10° | 0 mm | 5 | |
| 21 Sept. | Patchy rain possible | 18° /10° | 0.2 mm | 4 | |
| 22 Sept. | Patchy rain possible | 17° /10° | 1.5 mm | 4 | |
| 23 Sept. | Patchy rain possible | 15° /10° | 0.7 mm | 4 | |
| 24 Sept. | Patchy rain possible | 13° /7° | 0.4 mm | 3 | |
| 25 Sept. | Overcast | 12° /5° | 0 mm | 3 | |
| 26 Sept. |  Moderate rain at times | 10° /7° | 2.5 mm | 3 | |
| 27 Sept. | Patchy rain possible | 10° /8° | 0.9 mm | 3 | |
| 28 Sept. | Patchy rain possible | 12° /7° | 0.1 mm | 3 | |
| 29 Sept. | Moderate or heavy rain shower | 11° /7° | 10.1 mm | 3 | |
| 30 Sept. | Light rain shower | 14° /9° | 1.4 mm | 3 | |
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Important Notice
Our weather forecast for Mayo County 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 Mayo County forecast closer to your planned date for the most up-to-date weather information.
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Mayo County in September - FAQ
What are the expected maximum and minimum temperatures in Mayo County 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 Mayo County during September?
In September, Mayo County 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 Mayo County during September?
The average wind speed in Mayo County during September is 19 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in Mayo County
Explore the daily rainfall trends and prepare for Mayo Countys September weather 💧
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