County Galway (Galway)
September
Weather in County Galway for September 2025
Your guide to County Galway weather in September - trends and predictions
In general, the average temperature in County Galway at the beginning of September is 19.3 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 14.3 °C by the end of September.
Expect significant rainfall in County Galway during September, with an average of 16 rainy days.
Is September a good time to visit County Galway? check out the best time to travel to County Galway page.
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14
Dry days
16
Rainy days
0
Snow days
17°/10°
Temperatures
30 km/h
Avg max wind
83 %
Avg humidity
County Galway in September average weather
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| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  19° | 2  16° | 3 17° | 4 19° | 5 20° | 6 22° | 7 22° |
| 8 19° | 9 17° | 10 17° | 11 15° | 12  14° | 13  14° | 14 16° |
| 15 15° | 16 16° | 17  17° | 18 16° | 19 18° | 20 18° | 21 16° |
| 22 14° | 23 17° | 24  15° | 25 15° | 26 13° | 27 13° | 28 14° |
| 29 14° | 30 16° |
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Temperatures trend during September in County Galway
See the weather trend as well as the moving average line
September weather day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Sept. | Light rain shower | 19° /12° | 1.8 mm | 4 | |
| 2 Sept. | Partly cloudy | 16° /11° | 0.4 mm | 4 | |
| 3 Sept. | Partly cloudy | 17° /11° | 0.3 mm | 5 | |
| 4 Sept. | Partly cloudy | 19° /11° | 0.3 mm | 5 | |
| 5 Sept. | Patchy rain possible | 20° /11° | 0.2 mm | 5 | |
| 6 Sept. | Patchy rain possible | 22° /14° | 1.1 mm | 6 | |
| 7 Sept. | Partly cloudy | 22° /14° | 0.4 mm | 6 | |
| 8 Sept. | Patchy rain possible | 19° /13° | 0.6 mm | 5 | |
| 9 Sept. | Patchy rain possible | 17° /12° | 0.3 mm | 4 | |
| 10 Sept. | Patchy rain possible | 17° /12° | 0.9 mm | 4 | |
| 11 Sept. | Light rain shower | 15° /9° | 1.2 mm | 4 | |
| 12 Sept. | Cloudy | 14° /8° | 0.2 mm | 4 | |
| 13 Sept. | Overcast | 14° /7° | 0.7 mm | 4 | |
| 14 Sept. | Overcast | 16° /10° | 0.8 mm | 4 | |
| 15 Sept. | Overcast | 15° /10° | 0.1 mm | 4 | |
| 16 Sept. | Cloudy | 16° /9° | 0 mm | 4 | |
| 17 Sept. | Light drizzle | 17° /11° | 2.2 mm | 5 | |
| 18 Sept. | Light rain shower | 16° /10° | 2.8 mm | 4 | |
| 19 Sept. | Light rain shower | 18° /10° | 11.1 mm | 5 | |
| 20 Sept. | Light rain shower | 18° /10° | 3.4 mm | 5 | |
| 21 Sept. | Light rain shower | 16° /10° | 3.2 mm | 4 | |
| 22 Sept. | Patchy rain possible | 14° /10° | 2.3 mm | 4 | |
| 23 Sept. | Patchy light drizzle | 17° /8° | 0.6 mm | 5 | |
| 24 Sept. | Moderate rain | 15° /10° | 7.1 mm | 4 | |
| 25 Sept. | Light rain shower | 15° /9° | 1.5 mm | 4 | |
| 26 Sept. | Light rain shower | 13° /8° | 12.1 mm | 4 | |
| 27 Sept. | Light rain shower | 13° /9° | 7.2 mm | 4 | |
| 28 Sept. | Light rain shower | 14° /10° | 6.7 mm | 4 | |
| 29 Sept. | Patchy rain possible | 14° /10° | 3.9 mm | 4 | |
| 30 Sept. | Light rain | 16° /10° | 3.6 mm | 4 | |
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Important Notice
Our weather forecast for County Galway 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 County Galway forecast closer to your planned date for the most up-to-date weather information.
County Galway in September - FAQ
What are the expected maximum and minimum temperatures in County Galway during September?
Enjoy moderate daytime temperatures of up to 17° and cooler nights around 10°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in County Galway during September?
Significant rainfall exceeding 119.5 mm is expected in County Galway during September, occurring over more than 16 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in County Galway during September?
The average wind speed in County Galway during September is 30 km/h, suggesting breezy to windy conditions, depending on your activities.
What to pack to County Galway in September?
As you prepare for your trip to County Galway in September, it's important to consider the typical weather patterns for the time of year. Below is a carefully tailored packing list to ensure that your time in County Galway, during September, is comfortable and enjoyable, regardless of the weather conditions.
- Clothing
- Warm Clothing: Sweaters, hoodies, long pants
- Rain Gear: Lightweight, waterproof clothing
- Footwear
- Waterproof Shoes
- Accessories
- Scarves: To protect you from the cold wind
- Gloves/Mittens: Essential for cold weather
- Warm Hats: Warm hats for insulation in cold weather
- Umbrellas/Raincoats: For rainy days
September rainfall patterns in County Galway
Explore the daily rainfall trends and prepare for County Galways September weather 💧
UV exposure in County Galway during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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Where is County Galway?Get accurate weather forecasts for County Galway, located at latitude 53.272 and longitude -9.051. Stay updated with localized weather information tailored for County Galway.
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