Dublin
September
Weather in Dublin for September 2025
Your guide to Dublin weather in September - trends and predictions
In general, the average temperature in Dublin at the beginning of September is 17.6 °C. As the month progressed, temperatures tended to noticeably cool down, reaching an average of 14.7 °C by the end of September.
Dublin experiences heavy rainfall in September, with over 20 rainy days and an average total precipitation 116.4 mm.
Temperatures
Rain 🌧️
6
Dry days
24
Rainy days
0
Snow days
16°/11°
Temperatures
21 km/h
Avg max wind
83 %
Avg humidity
Dublin in September average weather
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| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  17° | 2  17° | 3 17° | 4 17° | 5 17° | 6  19° | 7 19° |
| 8  19° | 9 18° | 10 17° | 11 16° | 12 15° | 13  16° | 14 17° |
| 15 15° | 16 16° | 17 16° | 18  16° | 19 16° | 20 16° | 21 16° |
| 22 15° | 23 15° | 24 16° | 25 15° | 26 15° | 27 14° | 28 14° |
| 29 14° | 30 15° |
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Temperatures trend during September in Dublin
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. | Patchy rain possible | 17° /12° | 0.5 mm | 4 | |
| 2 Sept. | Sunny | 17° /12° | 2.3 mm | 4 | |
| 3 Sept. | Sunny | 17° /11° | 6.1 mm | 4 | |
| 4 Sept. | Patchy rain possible | 17° /11° | 7.3 mm | 4 | |
| 5 Sept. | Patchy rain possible | 17° /12° | 5.1 mm | 4 | |
| 6 Sept. | Partly cloudy | 19° /14° | 1.7 mm | 5 | |
| 7 Sept. | Sunny | 19° /14° | 3.3 mm | 5 | |
| 8 Sept. | Cloudy | 19° /13° | 7.5 mm | 5 | |
| 9 Sept. | Patchy rain possible | 18° /12° | 7.4 mm | 4 | |
| 10 Sept. | Patchy rain possible | 17° /12° | 4.3 mm | 4 | |
| 11 Sept. | Patchy rain possible | 16° /12° | 9.6 mm | 4 | |
| 12 Sept. | Patchy rain possible | 15° /10° | 1 mm | 4 | |
| 13 Sept. | Moderate or heavy rain shower | 16° /9° | 1.3 mm | 4 | |
| 14 Sept. | Patchy rain possible | 17° /10° | 1.8 mm | 4 | |
| 15 Sept. | Patchy rain possible | 15° /11° | 9.7 mm | 4 | |
| 16 Sept. | Patchy rain possible | 16° /9° | 2 mm | 4 | |
| 17 Sept. | Sunny | 16° /11° | 4.9 mm | 5 | |
| 18 Sept. | Overcast | 16° /10° | 0.1 mm | 4 | |
| 19 Sept. | Patchy rain possible | 16° /11° | 1.9 mm | 4 | |
| 20 Sept. | Overcast | 16° /10° | 0.6 mm | 4 | |
| 21 Sept. | Partly cloudy | 16° /11° | 0.4 mm | 4 | |
| 22 Sept. | Light rain shower | 15° /11° | 6 mm | 4 | |
| 23 Sept. | Patchy rain possible | 15° /10° | 1.7 mm | 4 | |
| 24 Sept. | Overcast | 16° /10° | 1.9 mm | 4 | |
| 25 Sept. | Overcast | 15° /10° | 0.1 mm | 4 | |
| 26 Sept. | Light rain shower | 15° /9° | 4.9 mm | 4 | |
| 27 Sept. | Patchy rain possible | 14° /9° | 7.2 mm | 3 | |
| 28 Sept. | Patchy rain possible | 14° /8° | 0.9 mm | 3 | |
| 29 Sept. | Patchy rain possible | 14° /8° | 5 mm | 3 | |
| 30 Sept. | Moderate or heavy rain shower | 15° /9° | 9.7 mm | 4 | |
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Important Notice
Our weather forecast for Dublin 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 Dublin forecast closer to your planned date for the most up-to-date weather information.
Dublin in September - FAQ
What are the expected maximum and minimum temperatures in Dublin during September?
Enjoy moderate daytime temperatures of up to 16° and cooler nights around 11°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Dublin during September?
Significant rainfall exceeding 116.4 mm is expected in Dublin during September, occurring over more than 24 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Dublin during September?
The average wind speed in Dublin during September is 21 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in Dublin
Explore the daily rainfall trends and prepare for Dublins September weather 💧
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