Côtes-d'Armor (Dinan)
September
Weather in Côtes-d'Armor for September 2027
Your guide to Côtes-d'Armor weather in September - trends and predictions
In general, the average temperature in Côtes-d'Armor at the beginning of September is 21.9 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 18.3 °C by the end of September.
The climate of Côtes-d'Armor in September is notably wet, with an average of 13 rainy days, and a total of 66.9 mm of precipitation.
Is September a good time to visit Côtes-d'Armor? check out the best time to travel to Côtes-d'Armor page.
✨ Is September a good time to visit Côtes-d'Armor? – Ask the AI Weatherman
Temperatures
Rain 🌧️
More
17
Dry days
13
Rainy days
0
Snow days
20°/12°
Temperatures
24 km/h
Avg max wind
75 %
Avg humidity
Côtes-d'Armor Weather September
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Temperatures trend during September in Côtes-d'Armor
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September weather in Côtes-d'Armor day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Sept. |  Moderate or heavy rain shower | 21° /14° | 6.2 mm | 4 | |
| 2 Sept. | Moderate or heavy rain shower | 23° /13° | 7.9 mm | 4 | |
| 3 Sept. |  Patchy rain possible | 22° /15° | 1.1 mm | 4 | |
| 4 Sept. | Patchy rain possible | 21° /14° | 0.9 mm | 4 | |
| 5 Sept. | Patchy rain possible | 20° /13° | 0.5 mm | 4 | |
| 6 Sept. | Patchy rain possible | 25° /13° | 0.4 mm | 5 | |
| 7 Sept. | Moderate or heavy rain shower | 21° /14° | 5.5 mm | 3 | |
| 8 Sept. |  Light rain | 18° /12° | 4.8 mm | 3 | |
| 9 Sept. | Light rain | 19° /12° | 2.6 mm | 4 | |
| 10 Sept. | Patchy rain possible | 20° /11° | 2 mm | 3 | |
| 11 Sept. | Patchy rain possible | 19° /12° | 1.7 mm | 4 | |
| 12 Sept. | Patchy rain possible | 19° /11° | 1.1 mm | 4 | |
| 13 Sept. | Patchy rain possible | 20° /12° | 1.4 mm | 4 | |
| 14 Sept. |  Sunny | 21° /12° | 0.3 mm | 5 | |
| 15 Sept. | Patchy rain possible | 19° /11° | 0.1 mm | 4 | |
| 16 Sept. | Patchy rain possible | 19° /12° | 1.1 mm | 3 | |
| 17 Sept. | Patchy rain possible | 20° /12° | 1 mm | 4 | |
| 18 Sept. | Patchy rain possible | 22° /13° | 0.1 mm | 4 | |
| 19 Sept. |  Partly cloudy | 25° /13° | 0 mm | 4.8 | |
| 20 Sept. |  Cloudy | 22° /12° | 0.1 mm | 4 | |
| 21 Sept. | Light rain | 20° /12° | 4.2 mm | 4 | |
| 22 Sept. | Moderate or heavy rain shower | 20° /12° | 6.3 mm | 4 | |
| 23 Sept. | Light rain | 18° /11° | 2.8 mm | 3 | |
| 24 Sept. | Patchy rain possible | 20° /12° | 2.2 mm | 3 | |
| 25 Sept. | Light rain | 18° /12° | 2.5 mm | 4 | |
| 26 Sept. | Patchy rain possible | 17° /12° | 1.3 mm | 3 | |
| 27 Sept. | Patchy rain possible | 18° /11° | 1.7 mm | 3 | |
| 28 Sept. | Light rain | 16° /12° | 6 mm | 3 | |
| 29 Sept. |  Overcast | 20° /12° | 0.6 mm | 3 | |
| 30 Sept. | Patchy rain possible | 19° /13° | 0.3 mm | 3 | |
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Important Notice
Our weather forecast for Côtes-d'Armor 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 Côtes-d'Armor forecast closer to your planned date for the most up-to-date weather information.
Change Month
Côtes-d'Armor weather in September vs August vs October
Compare September weather in Côtes-d'Armor with the previous and following months. See how temperature, rainfall, wind, and other conditions change throughout the year to help you plan your visit.
| August | September | October | |
|---|---|---|---|
| Weather | Patchy rain possible | Patchy rain possible | Patchy rain possible |
| Temperatures | 24°/15° | 20°/12° | 17°/10° |
| Rainfall | 54 mm | 67 mm | 67 mm |
| Wind | 22.4 km/h | 23.6 km/h | 24.2 km/h |
| Humidity | 70% | 75% | 77% |
| Rainy days | 7 days | 13 days | 12 days |
| Dry days | 24 days | 17 days | 19 days |
Planning a trip to Côtes-d'Armor? Discover the best time to visit
Côtes-d'Armor in September - FAQ
What are the expected maximum and minimum temperatures in Côtes-d'Armor during September?
Enjoy moderate daytime temperatures of up to 20° and cooler nights around 12°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Côtes-d'Armor during September?
Moderate rainfall is anticipated in Côtes-d'Armor during September, with a total of 66.9 mm spread over approximately 13 days. Considering plans for rainy days is advisable.
What are the typical wind conditions in Côtes-d'Armor during September?
The average wind speed in Côtes-d'Armor during September is 24 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in Côtes-d'Armor
Explore the daily rainfall trends and prepare for Côtes-d'Armors September weather 💧
Typically, Côtes-d'Armor has 13 rainy days in September with a total of 66.9 mm of rainfall.
UV exposure in Côtes-d'Armor during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
What to pack to Côtes-d'Armor in September?
Mild & changeable · highs around 20 °C, frequent showers
As you prepare for your trip to Côtes-d'Armor 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 Côtes-d'Armor, during September, is comfortable and enjoyable, regardless of the weather conditions.
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