Brittany (Rennes)
May
Weather in Brittany for May 2025
Your guide to Brittany weather in May - trends and predictions
In general, the average temperature in Brittany at the beginning of May is 16.6 °C. As the month progressed, temperatures tended to significantly warm up, reaching an average of 20.3 °C by the end of May.
Brittany sees moderate rainfall in May, averaging 8 rainy days.
Is May a good time to visit Brittany? check out the best time to travel to Brittany page.
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23
Dry days
8
Rainy days
0
Snow days
20°/8°
Temperatures
21 km/h
Avg max wind
82 %
Avg humidity
Brittany in May average weather
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| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  15° | 2  17° | 3  17° | 4 17° | |||
| 5  16° | 6 15° | 7 19° | 8 18° | 9 18° | 10 18° | 11 19° |
| 12 17° | 13 17° | 14  18° | 15 15° | 16 16° | 17 17° | 18 18° |
| 19 19° | 20 19° | 21 18° | 22 18° | 23 18° | 24 17° | 25 20° |
| 26  20° | 27 19° | 28 21° | 29 21° | 30 20° | 31 21° |
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Temperatures trend during May in Brittany
See the weather trend as well as the moving average line
May weather day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 May | Patchy rain possible | 15° /8° | 6.3 mm | 4 | |
| 2 May | Cloudy | 17° /6° | 1.9 mm | 4 | |
| 3 May | Overcast | 17° /6° | 1.6 mm | 4 | |
| 4 May | Patchy rain possible | 17° /8° | 1.3 mm | 4 | |
| 5 May | Moderate rain at times | 16° /10° | 4.9 mm | 4 | |
| 6 May | Moderate rain at times | 15° /8° | 8 mm | 4 | |
| 7 May | Patchy rain possible | 19° /9° | 1 mm | 4 | |
| 8 May | Overcast | 18° /7° | 0.3 mm | 4 | |
| 9 May | Moderate or heavy rain shower | 18° /8° | 8.5 mm | 4 | |
| 10 May | Moderate or heavy rain shower | 18° /8° | 4.2 mm | 5 | |
| 11 May | Patchy rain possible | 19° /8° | 1.4 mm | 5 | |
| 12 May | Patchy rain possible | 17° /9° | 7.6 mm | 4 | |
| 13 May | Overcast | 17° /10° | 3.9 mm | 4 | |
| 14 May | Sunny | 18° /8° | 1.5 mm | 5 | |
| 15 May | Moderate or heavy rain shower | 15° /8° | 3.4 mm | 4 | |
| 16 May | Patchy rain possible | 16° /6° | 1.7 mm | 4 | |
| 17 May | Overcast | 17° /6° | 3.1 mm | 4 | |
| 18 May | Patchy rain possible | 18° /8° | 1.7 mm | 4 | |
| 19 May | Sunny | 19° /7° | 1.8 mm | 5 | |
| 20 May | Patchy rain possible | 19° /8° | 4.5 mm | 4 | |
| 21 May | Overcast | 18° /9° | 3.5 mm | 4 | |
| 22 May | Overcast | 18° /9° | 3.1 mm | 4 | |
| 23 May | Overcast | 18° /8° | 2 mm | 4 | |
| 24 May | Overcast | 17° /7° | 0.1 mm | 4 | |
| 25 May | Cloudy | 20° /8° | 0.3 mm | 5 | |
| 26 May | Partly cloudy | 20° /9° | 1.1 mm | 5 | |
| 27 May | Cloudy | 19° /8° | 1.1 mm | 5 | |
| 28 May | Partly cloudy | 21° /11° | 0.6 mm | 5 | |
| 29 May | Partly cloudy | 21° /12° | 3.1 mm | 5 | |
| 30 May | Sunny | 20° /9° | 0.5 mm | 5 | |
| 31 May | Partly cloudy | 21° /9° | 0.7 mm | 5 | |
| Next | |||||
Important Notice
Our weather forecast for Brittany in May 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 Brittany forecast closer to your planned date for the most up-to-date weather information.
Brittany in May - FAQ
What are the expected maximum and minimum temperatures in Brittany during May?
Enjoy moderate daytime temperatures of up to 20° and cooler nights around 8°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Brittany during May?
Significant rainfall exceeding 154.7 mm is expected in Brittany during May, occurring over more than 8 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Brittany during May?
The average wind speed in Brittany during May is 21 km/h, suggesting breezy to windy conditions, depending on your activities.
What to pack to Brittany in May?
As you prepare for your trip to Brittany in May, 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 Brittany, during May, 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
May rainfall patterns in Brittany
Explore the daily rainfall trends and prepare for Brittanys May weather 💧
UV exposure in Brittany during May
Stay informed about UV levels for safe outdoor activities throughout the month of May ☀️
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