Dublin City (Dublin)
September
Weather in Dublin City for September 2026
Your guide to Dublin City weather in September - trends and predictions
So far, September 2026 in Dublin City is slightly warmer than the historical average by 1.1 °C.
The forecast for the next days in Dublin City predicts temperatures to be around 17 °C, close to the historical average.
In general, the average temperature in Dublin City at the beginning of September is 17.6 °C. As the month progressed, temperatures tended to moderately fall, reaching an average of 16.4 °C by the end of September.
The climate of Dublin City in September is notably wet, with an average of 15 rainy days, and a total of 120.3 mm of precipitation.
Temperatures
Rain 🌧️
15
Dry days
15
Rainy days
0
Snow days
16°/11°
Temperatures
22 km/h
Avg max wind
82 %
Avg humidity
Dublin City Weather September
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Temperatures trend during September in Dublin City
See the weather trend as well as the moving average line
September weather in Dublin City day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Sept. |  Patchy rain possible | 17° /12° | 0.4 mm | 4 | |
| 2 Sept. | Patchy rain possible | 18° /11° | 2.8 mm | 4 | |
| 3 Sept. |  Overcast | 17° /11° | 10.4 mm | 4 | |
| 4 Sept. | Patchy rain possible | 17° /11° | 5.3 mm | 4 | |
| 5 Sept. | Patchy rain possible | 17° /11° | 3.4 mm | 4 | |
| 6 Sept. |  Partly cloudy | 19° /13° | 1.5 mm | 4 | |
| 7 Sept. | Light rain shower | 18° /13° | 3.5 mm | 4 | |
| 8 Sept. | Patchy rain possible | 18° /11° | 5.9 mm | 4 | |
| 9 Sept. | Patchy rain possible | 17° /11° | 5.3 mm | 4 | |
| 10 Sept. | Patchy rain possible | 17° /12° | 3.8 mm | 3 | |
| 11 Sept. | Light rain shower | 16° /11° | 7.1 mm | 4 | |
| 12 Sept. | Patchy rain possible | 16° /10° | 2 mm | 3 | |
| 13 Sept. | Patchy rain possible | 16° /10° | 1.6 mm | 3 | |
| 14 Sept. | Patchy rain possible | 18° /10° | 2.7 mm | 4 | |
| 15 Sept. | Patchy rain possible | 15° /11° | 8.2 mm | 4 | |
| 16 Sept. | Overcast | 16° /10° | 0.1 mm | 3.1 | |
| 17 Sept. | Patchy rain possible | 15° /10° | 1.1 mm | 2.6 | |
| 18 Sept. | Overcast | 15° /9° | 1.2 mm | 1.8 | |
| 19 Sept. | Patchy rain possible | 16° /10° | 0.6 mm | 3.3 | |
| 20 Sept. | Overcast | 19° /8° | 0 mm | 5 | |
| 21 Sept. | Overcast | 21° /14° | 0 mm | 6 | |
| 22 Sept. |  Sunny | 21° /14° | 0 mm | 6 | |
| 23 Sept. | Sunny | 20° /14° | 0 mm | 5 | |
| 24 Sept. | Overcast | 15° /9° | 0 mm | 3 | |
| 25 Sept. | Sunny | 18° /7° | 0 mm | 5 | |
| 26 Sept. | Sunny | 19° /10° | 0 mm | 5 | |
| 27 Sept. | Sunny | 18° /10° | 0 mm | 5 | |
| 28 Sept. | Patchy rain possible | 16° /9° | 0.1 mm | 5 | |
| 29 Sept. | Patchy rain possible | 14° /10° | 1.1 mm | 4 | |
| 30 Sept. |  Moderate or heavy rain shower | 15° /10° | 8.1 mm | 4 | |
| Next | |||||
Important Notice
Our weather forecast for Dublin City 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 City forecast closer to your planned date for the most up-to-date weather information.
Change Month
Dublin City in September - FAQ
What are the expected maximum and minimum temperatures in Dublin City 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 City during September?
Significant rainfall exceeding 120.3 mm is expected in Dublin City during September, occurring over more than 15 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Dublin City during September?
The average wind speed in Dublin City during September is 22 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in Dublin City
Explore the daily rainfall trends and prepare for Dublin Citys September weather 💧
Typically, Dublin City has 15 rainy days in September with a total of 120.3 mm of rainfall.
UV exposure in Dublin City during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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