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Weather in Rennes for May 2026

Your guide to Rennes weather in May - trends and predictions

    Temperatures

  • The forecast for the first days of May 2026 in Rennes predicts temperatures to be around 18 °C, close to the historical average.

  • In general, the average temperature in Rennes at the beginning of May is 17.9 °C. As the month progressed, temperatures tended to noticeably warm up, reaching an average of 20.7 °C by the end of May.

    • Rain 🌧️

  • Rennes experiences heavy rainfall in May, with over 20 rainy days and an average total precipitation 66.8 mm.

    • More

  • Is May a good time to visit Rennes? check out the best time to travel to Rennes page.

  • New! Chat with our AI weatherman - it’s amazing and free.

Average dry days
6
Dry days
Average rainy days
25
Rainy days
Average snowy days
0
Snow days
Average temperatures
18°/8°
Temperatures
Average wind speed
21 km/h
Avg max wind
Average humidity
79 %
Avg humidity

Rennes Weather May

Move between months or click on a day
April
June
Mon.Tue.Wed.Thu.Fri.Sat.Sun.
1
Patchy rain possible
20°
2
Patchy rain possible
19°
3
Patchy rain possible
20°
4
Patchy rain possible
17°
5
Patchy rain possible
18°
6
Partly cloudy
13°
7
Sunny
18°
8
Patchy rain possible
21°
9
Patchy rain possible
16°
10
Patchy rain possible
18°
11
Patchy rain possible
14°
12
Patchy rain possible
15°
13
Patchy rain possible
16°
14
Patchy rain possible
19°
15
Moderate or heavy rain shower
18°
16
Patchy rain possible
17°
17
Moderate or heavy rain shower
19°
18
Moderate or heavy rain shower
20°
19
Moderate rain at times
19°
20
Cloudy
19°
21
Light rain shower
19°
22
Moderate rain at times
19°
23
Light rain shower
18°
24
Patchy rain possible
17°
25
Overcast
19°
26
Patchy rain possible
19°
27
Patchy rain possible
20°
28
Light drizzle
21°
29
Partly cloudy
22°
30
Overcast
22°
31
Cloudy
22°

Temperatures trend during May in Rennes

See the weather trend as well as the moving average line

May weather in Rennes day by day

Click on a date for more information
April June
Date Weather Temperatures Rain UV More
1 May Patchy rain possible
Patchy rain possible
 20° /12° 0.7 mm 4.8
2 May Patchy rain possible
Patchy rain possible
 19° /12° 1 mm 4.1
3 May Patchy rain possible
Patchy rain possible
 20° /11° 4.5 mm 4.3
4 May Patchy rain possible
Patchy rain possible
 17° /8° 2.5 mm 2.1
5 May Patchy rain possible
Patchy rain possible
 18° /9° 0.9 mm 3
6 May Partly cloudy
Partly cloudy
 13° /5° 0 mm 3
7 May Sunny
Sunny
 18° /2° 0 mm 4
8 May Patchy rain possible
Patchy rain possible
 21° /8° 1.3 mm 3
9 May Patchy rain possible
Patchy rain possible
 16° /8° 1.2 mm 3
10 May Patchy rain possible
Patchy rain possible
 18° /5° 1 mm 3
11 May Patchy rain possible
Patchy rain possible
 14° /9° 1.5 mm 3
12 May Patchy rain possible
Patchy rain possible
 15° /10° 0.4 mm 3
13 May Patchy rain possible
Patchy rain possible
 16° /12° 2 mm 3
14 May Patchy rain possible
Patchy rain possible
 19° /8° 1.7 mm 5
15 May Moderate or heavy rain shower
Moderate or heavy rain shower
 18° /9° 3.8 mm 4
16 May Patchy rain possible
Patchy rain possible
 17° /7° 1.9 mm 4
17 May Moderate or heavy rain shower
Moderate or heavy rain shower
 19° /7° 2.7 mm 5
18 May Moderate or heavy rain shower
Moderate or heavy rain shower
 20° /8° 1.4 mm 5
19 May Moderate rain at times
Moderate rain at times
 19° /8° 1.7 mm 4
20 May Cloudy
Cloudy
 19° /8° 2.9 mm 4
21 May Light rain shower
Light rain shower
 19° /9° 2.7 mm 4
22 May Moderate rain at times
Moderate rain at times
 19° /9° 1.9 mm 4
23 May Light rain shower
Light rain shower
 18° /7° 4.6 mm 4
24 May Patchy rain possible
Patchy rain possible
 17° /7° 3.1 mm 4
25 May Overcast
Overcast
 19° /7° 0.6 mm 4
26 May Patchy rain possible
Patchy rain possible
 19° /8° 1.1 mm 4
27 May Patchy rain possible
Patchy rain possible
 20° /9° 0.6 mm 4
28 May Light drizzle
Light drizzle
 21° /10° 0.4 mm 5
29 May Partly cloudy
Partly cloudy
 22° /10° 1.3 mm 5
30 May Overcast
Overcast
 22° /9° 0.3 mm 5
31 May Cloudy
Cloudy
 22° /10° 0.3 mm 5
Next
Important Notice
Our weather forecast for Rennes 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 Rennes forecast closer to your planned date for the most up-to-date weather information.
Change Month
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Rennes weather in May vs April vs June

Compare May weather in Rennes with the previous and following months. See how temperature, rainfall, wind, and other conditions change throughout the year to help you plan your visit.
AprilMayJune
WeatherPatchy rain possible
Patchy rain possible
Patchy rain possible
Patchy rain possible
Patchy rain possible
Patchy rain possible
Temperatures14°/5°18°/8°23°/12°
Rainfall50 mm67 mm69 mm
Wind20.5 km/h20.8 km/h19.2 km/h
Humidity79%79%72%
Rainy days20 days25 days20 days
Dry days10 days6 days10 days

Planning a trip to Rennes? Discover the best time to visit

Rennes in May - FAQ

What are the expected maximum and minimum temperatures in Rennes during May?

Enjoy moderate daytime temperatures of up to 18° and cooler nights around 8°. Ideal for a range of outdoor activities, from hiking to city tours.

How much rainfall should be expected in Rennes during May?

Moderate rainfall is anticipated in Rennes during May, with a total of 66.8 mm spread over approximately 25 days. Considering plans for rainy days is advisable.

What are the typical wind conditions in Rennes during May?

The average wind speed in Rennes during May is 21 km/h, suggesting breezy to windy conditions, depending on your activities.

What to pack to Rennes in May?

As you prepare for your trip to Rennes 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 Rennes, 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 Rennes

Explore the daily rainfall trends and prepare for Renness May weather 💧
Typically, Rennes has 25 rainy days in May with a total of 66.8 mm of rainfall.

UV exposure in Rennes during May

Stay informed about UV levels for safe outdoor activities throughout the month of May ☀️

Quick links

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Location coordinates Where is Rennes?

Get accurate weather forecasts for Rennes, located at latitude 48.112 and longitude -1.674. Stay updated with localized weather information tailored for Rennes.

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