January in Rennes: expect compromises
Hardest · 4.6/10January averages 5°C (41°F) — jacket weather. Comfortable for walking and museums, too cool for anything water-based.
Rainfall runs 61 mm, so plan one flexible day in three; you still get almost no days with 6+ hours of sunshine and 8.6 hours of daylight.
It scores 4.6/10 here, 12th of 12 months, against 9.6/10 in the destination's best month.
Plan for low-season pricing, with crowds are light for this destination.
Pack a mid-weight jacket, long sleeves and shoes you can walk 15 km in, a packable rain layer.
Flexible dates? July scores 5 points higher here — enough to change the trip.
February in Rennes — workable with trade-offs
Trade-offs · 5.8/10February averages 7°C (45°F) — jacket weather. Comfortable for walking and museums, too cool for anything water-based.
Expect 38 mm of rain — occasional showers rather than washed-out days — alongside almost no days with 6+ hours of sunshine and 9.9 daylight hours.
It scores 5.8/10 here, 9th of 12 months, against 9.6/10 in the destination's best month.
Plan for low-season pricing, with crowds are light for this destination.
Pack a mid-weight jacket, long sleeves and shoes you can walk 15 km in.
Flexible dates? July scores 3.8 points higher here — enough to change the trip.
March in Rennes — middling scores, decent value
Trade-offs · 6.4/10Expect 9°C (48°F) in March. A good month for city streets, viewpoints and long meals; leave swimming for another season.
Budget for roughly 58 mm of rain this month — a flexible day or two helps — with about 7 days with 6+ hours of sunshine and 11.6 hours of daylight to work around it.
That is 6.4/10 on the same scale — 7th of 12 months, versus 9.6/10 for the best month here.
Budget for mid-season pricing, and crowds are moderate.
Pack a mid-weight jacket, long sleeves and shoes you can walk 15 km in, a packable rain layer.
If your dates are flexible, July is materially better in Rennes — 3.2 points higher on the same scale.
April holds up well in Rennes — 5th best month
Good · 8/10April averages 11°C (52°F) — jacket weather. Comfortable for walking and museums, too cool for anything water-based.
Rainfall runs 45 mm, so plan one flexible day in three; you still get about 15 days with 6+ hours of sunshine and 13.4 hours of daylight.
It scores 8/10 here, 5th of 12 months, against 9.6/10 in the destination's best month.
Figure on mid-season pricing, with crowds are moderate.
Pack a mid-weight jacket, long sleeves and shoes you can walk 15 km in, a packable rain layer.
Flexible dates? July scores 1.6 points higher here — enough to change the trip.
May is one of the strongest months in Rennes (3rd)
Best window · 9.3/10Temperatures 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.
Expect mid-season pricing, and crowds are moderate.
Pack layers you can shed by midday plus one warm layer for the evening.
June in Rennes — one of the year's strongest windows (4th)
Best window · 9.1/10June averages 18°C (65°F), the range most people find easiest for walking a city all day without either overheating or losing daylight to weather.
Rainfall runs 58 mm, so plan one flexible day in three; you still get about 28 days with 6+ hours of sunshine and 15.8 hours of daylight.
A 9.1/10 puts this among the year's best months in Rennes (4th of 12); only July scores higher, at 9.6/10.
Figure on mid-season pricing, with crowds are moderate.
Pack layers you can shed by midday plus one warm layer for the evening, a packable rain layer.
July: the best month of the year in Rennes
Best window · 9.6/10July averages 20°C (68°F) — pleasant for mornings and evenings on foot in the city, with a midday break when the sun is strongest.
Expect 41 mm of rain — occasional showers rather than washed-out days — alongside about 26 days with 6+ hours of sunshine and 15.5 daylight hours.
On our climate-comfort scale this is the top-ranked month of the year for Rennes at 9.6/10 — the reference point every other month on this page is measured against.
Plan for peak pricing, with this is one of the busiest months here. You are paying the year's highest rates for the year's best conditions — book early or shift a few weeks either side.
Pack light clothing, a hat and real sun protection.
August is one of the strongest months in Rennes (2nd)
Best window · 9.4/10At 20°C (69°F) this is comfortable city weather in August, with sightseeing easiest before lunch and after the afternoon peak.
With around 40 mm of rain, any showers tend to pass through rather than settle in; about 20 days with 6+ hours of sunshine and 14.1 hours of daylight fill the rest.
On our climate-comfort scale this is one of the strongest months of the year for Rennes at 9.4/10 (2nd of 12), just behind July at 9.6/10.
Expect peak pricing, and this is one of the busiest months here. You are paying the year's highest rates for the year's best conditions — book early or shift a few weeks either side.
Pack light clothing, a hat and real sun protection.
September in Rennes: strong conditions, 6th of 12
Good · 7.8/10Temperatures hover around 17°C (63°F) — the kind of month where neither heat nor cold forces the schedule.
Budget for roughly 66 mm of rain this month — a flexible day or two helps — with about 9 days with 6+ hours of sunshine and 12.3 hours of daylight to work around it.
That is 7.8/10 on the same scale — 6th of 12 months, versus 9.6/10 for the best month here.
Budget for mid-season pricing, and crowds are moderate.
Pack layers you can shed by midday plus one warm layer for the evening, a packable rain layer.
If your dates are flexible, July is materially better in Rennes — 1.8 points higher on the same scale.
October in Rennes — middling scores, decent value
Trade-offs · 6.4/10October averages 15°C (58°F), the range most people find easiest for walking a city all day without either overheating or losing daylight to weather.
Rainfall runs 79 mm, so plan one flexible day in three; you still get about 1 days with 6+ hours of sunshine and 10.6 hours of daylight.
It scores 6.4/10 here, 8th of 12 months, against 9.6/10 in the destination's best month.
Figure on low-season pricing, with crowds are light for this destination.
Pack layers you can shed by midday plus one warm layer for the evening, a packable rain layer.
Flexible dates? July scores 3.2 points higher here — enough to change the trip.
November in Rennes — workable with trade-offs
Trade-offs · 5/10November averages 10°C (50°F) — jacket weather. Comfortable for walking and museums, too cool for anything water-based.
Rainfall runs 83 mm, so plan one flexible day in three; you still get almost no days with 6+ hours of sunshine and 9 hours of daylight.
It scores 5/10 here, 10th of 12 months, against 9.6/10 in the destination's best month.
Plan for low-season pricing, with crowds are light for this destination.
Pack a mid-weight jacket, long sleeves and shoes you can walk 15 km in, a packable rain layer.
Flexible dates? July scores 4.6 points higher here — enough to change the trip.
December in Rennes: expect compromises
Hardest · 4.8/10Expect 7°C (44°F) in December. A good month for city streets, viewpoints and long meals; leave swimming for another season.
Budget for roughly 59 mm of rain this month — a flexible day or two helps — with almost no days with 6+ hours of sunshine and 8.2 hours of daylight to work around it.
That is 4.8/10 on the same scale — 11th of 12 months, versus 9.6/10 for the best month here.
Budget for low-season pricing, and crowds are light for this destination.
Pack a mid-weight jacket, long sleeves and shoes you can walk 15 km in, a packable rain layer.
If your dates are flexible, July is materially better in Rennes — 4.8 points higher on the same scale.
