Is Rennes sunnier than Caen?

They are nearly tied: Rennes gets about 1,848 hours of sunshine a year and Caen about 1,829.

Which is warmer, Rennes or Caen?

Year-round daytime highs are similar: Rennes averages 16°C (61°F), Caen 15°C (59°F).

Which is better in winter (November–February), Rennes or Caen?

Rennes scores better across November–February: 10/100 average versus 5, with daytime highs around 10°C.

Rennes vs Caen: which is sunnier?

🇫🇷 France vs 🇫🇷 France · 155 km apart · long-term climate normals (NASA POWER, 2001–2020)

Rennes and Caen are virtually tied for annual sunshine — about 1,848 vs 1,829 hours a year. Rennes has the higher Sunshine Score in 8 of 12 months; the other 4 are within 2 points.

Scores are the 0–100 Sunshine Score — sunshine, daytime warmth and dryness in one number, per month.

At a glance

	Rennes	Caen
Sunshine hours / year	1,848	1,829
Sunniest month	September (82/100)	June (80/100)
Nov–Feb average score	10/100	5/100
Jun–Aug average score	81/100	79/100
Rain / year	707 mm	746 mm
Peak midday UV	6 (high)	6 (high)

Rennes vs Caen month by month

Month	Sunshine Score		Day high °C		Rain mm
Month	Rennes	Caen	Rennes	Caen	Rennes	Caen
January	0	0	8°	8°	69	69
February	7	0	9°	8°	58	58
March	26	20	12°	11°	57	59
April	54	47	16°	15°	46	45
May	72	65	19°	18°	58	59
June	80	80	23°	21°	50	53
July	81	79	24°	23°	48	57
August	81	78	24°	23°	47	60
September	82	80	22°	20°	42	48
October	57	50	17°	16°	75	77
November	25	19	12°	11°	77	79
December	6	0	9°	8°	80	82

The sunnier month by month: Jan even · Feb Rennes · Mar Rennes · Apr Rennes · May Rennes · Jun even · Jul even · Aug Rennes · Sep even · Oct Rennes · Nov Rennes · Dec Rennes.

When to pick which

November–February: Rennes (average score 10/100 vs 5). Daytime highs are similar (10°C vs 9°C). See the winter sun ranking.
March–May: Rennes (average score 51/100 vs 44). Daytime highs are similar (16°C vs 15°C).
June–August: too close to call — Rennes averages 81/100, Caen 79/100. Rennes is the warmer, around 24°C daytime highs vs 22°C.
September–October: Rennes (average score 70/100 vs 65). Rennes is the warmer, around 20°C daytime highs vs 18°C.

Full month-by-month guides: Rennes weather by month · Caen weather by month · Best time to visit France.

More comparisons: Rennes vs Nantes · Rennes vs Brest · Rennes vs Jersey · Caen vs Paris (Roissy-en-France, Val-d'Oise) · Caen vs Jersey · Caen vs Saint Peter Port · all head-to-heads