May · France
Best time to visit Rennes in May Weather, crowds & prices
Weather in Rennes in May
Average temperature 15°C, 44 mm of rain, about 25 days with 6+ hours of sunshine and 76% humidity — based on the five most recent complete years of ERA5 data (2021–2025).
May score
9.3/10
Ranked #3 of 12 months
- Avg temp
- 15°C
- Rainfall
- 44 mm
- Humidity
- 76%
- Days with 6h+ sun
- 25
- Crowd Density
- Moderate Crowds
- Average Expenses
- $$ · Moderate Cost ($$)
May in Rennes scores 9.3/10 for sightseeing and cultural travel - one of the top 12-month picks (#3). Expect around 15°C, 44 mm of rain, and roughly 25 days with 6+ hours of sunshine this month.
Rennes mixes Breton half-timbered houses, a parliament square and one of France's liveliest student scenes.
May is one of the strongest months in Rennes (3rd)
Temperatures hover around 15°C (59°F) — the kind of month where neither heat nor cold forces the schedule.
With around 44 mm of rain, any showers tend to pass through rather than settle in; about 25 days with 6+ hours of sunshine and 15 hours of daylight fill the rest.
On our climate-comfort scale this is one of the strongest months of the year for Rennes at 9.3/10 (3rd of 12), just behind July at 9.6/10.
Pack layers you can shed by midday plus one warm layer for the evening.
Expect mid-season pricing, and crowds are moderate.
Frequently asked
- What is the weather like in Rennes in May?
- In May, Rennes averages 15°C, 44 mm of rain, and about 25 days with 6+ hours of sunshine. Its climate-comfort score is 9.3/10.
- Is May a good time to visit Rennes?
- May earns a 9.3/10 climate-comfort score. Use the year-round chart to weigh the weather against your budget and crowd preferences.
- How much does it rain in Rennes in May?
- Expect about 44 mm of rain in May. Average humidity is 76% and there are about 25 days with 6+ hours of sunshine.
Curated in Rennes
Tickets & experiences
Things to do in Rennes
Rennes, France. Live activities and tours from GetYourGuide, matched to this destination.