The Frontier Gazette & Almanack
“Fair Warning for Every Town Under the Sky” · Est. 1881
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Rennes Weather in August

Rennes in August

The short of it: Rennes in August averages a high of 25 °C (76 °F) and a low of 14 °C (56 °F), with 54 mm (2.1 in) of rain and about 14 h 18 min of daylight. Rated 4 of 5 for a visit; the best months are June and September. Source: TerraClimate climate normals, 1991–2020.

Average high 25° · low 14° · rain 54 mm · daylight 14 h 18 min

✦✦✦✦ Recommended for a visit · best months: June & September

Thirty years of records give Rennes an average August high of 25°, a low of 14° and some 54 mm of rain. No month in Rennes runs warmer: highs about 25°. Rain is modest, about 54 mm, the 7th wettest month.

The sun is up for about 14 h 18 min in mid-August, 83 minutes less than a month before.

For the traveller: pack light clothes and a jacket for the evening. The Almanac rates August 4 of 5 for a visit; the finest months here are June and September.

Against its neighbours, Rennes runs warmer than most and about as wet in August. Saint-Grégoire, 5 km to the N, sees much the same highs.

August in Rennes, by the numbers

Warmth rank
1st warmest of 12
Rain rank
7th wettest of 12
Versus July
about the same, 5.0 mm more rain
Versus September
3° warmer
Day–night spread
11°
Snow season
seldom any
Daylight, mid-month
14 h 18 min
Average wind
12 km/h

Neighbouring Towns

August averages · distance by the crow’s flight
TownDistanceHighLowRain
Saint-GrégoireBrittany5 km N24°14°52 mm
ChantepieBrittany5 km ESE25°14°56 mm
Cesson-SévignéBrittany5 km ENE25°14°56 mm
Vezin-le-CoquetBrittany6 km W24°14°52 mm
Saint-Jacques-de-la-LandeBrittany6 km SW25°14°53 mm
BettonBrittany8 km NNE24°14°51 mm
Chartres-de-BretagneBrittany8 km SSW25°14°54 mm
PacéBrittany9 km WNW24°14°51 mm

The Almanac · Rennes Month by Month

Climate normals 1991–2020 · pick a month
PrecipitationAverage highAverage low
Recommended
The Almanac Speaks
August
✦✦✦✦✦

No month in Rennes runs warmer: highs about 25°. Rain is modest, about 54 mm, the 7th wettest month.

Climate of Rennes by month
MonthHighLowRainWindDaylightVisit
January9°3°70 mm14 km/h8 h 46 min✦✦
February10°3°54 mm14 km/h10 h 9 min✦✦✦
March13°5°51 mm14 km/h11 h 45 min✦✦✦
April16°6°57 mm14 km/h13 h 36 min✦✦✦
May19°9°56 mm13 km/h15 h 10 min✦✦✦✦
June23°12°46 mm13 km/h16 h 2 min✦✦✦✦
July25°14°49 mm13 km/h15 h 41 min✦✦✦✦
August25°14°54 mm12 km/h14 h 18 min✦✦✦✦
September22°11°52 mm12 km/h12 h 30 min✦✦✦✦
October17°9°89 mm13 km/h10 h 43 min✦✦✦
November13°6°96 mm13 km/h9 h 9 min✦✦
December10°4°85 mm14 km/h8 h 22 min✦

Questions Readers Ask about Rennes in August

Answered from the wire & the Almanac

What is the weather like in Rennes in August?

Days average 25 °C (76 °F) and nights 14 °C (56 °F), with about 54 mm (2.1 in) of rain over the month. No month in Rennes runs warmer: highs about 25°. Rain is modest, about 54 mm, the 7th wettest month.

Is August a good time to visit Rennes?

The Almanac gives August 4 of 5 (recommended). The best months are June and September.

How long are the days in Rennes in August?

In mid-August the sun is up for about 14 h 18 min. The days are shortening — from 8 h 22 min in December to 16 h 2 min in June.

Does it snow in Rennes in August?

Hardly — August nights average 14 °C (56 °F), above freezing.

What should I pack for Rennes in August?

Light clothes and a jacket for the evening.

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The Editor’s Remark

“Weather is the only news that never grows stale. Each morning the sky writes its own front page, and we at Wanted Weather are but its telegraph operators.”— J. Whitmore, Editor