Brittany · August
Best travel monthPeak seasonFrance · Europe
Climate Overview
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
Ø day, range from coolest to warmest dayØ dayrange | 9° (48°)3– (37–)14 (57) | 10° (50°)4– (39–)15 (59) | 12° (54°)6– (43–)19 (66) | 15° (59°)9– (48–)23 (73) | 18° (64°)12– (54–)24 (75) | 20° (68°)15– (59–)27 (81) | 22° (72°)17– (63–)29 (84) | 22° (72°)17– (63–)29 (84) | 21° (70°)15– (59–)27 (81) | 17° (63°)12– (54–)22 (72) | 13° (55°)7– (45–)17 (63) | 10° (50°)1– (34–)15 (59) |
Ø night, range from coldest to warmest nightØ nightrange | 4° (39°)-4– (25–)11 (52) | 4° (39°)-2– (28–)10 (50) | 5° (41°)-1– (30–)11 (52) | 7° (45°)1– (34–)11 (52) | 10° (50°)3– (37–)14 (57) | 13° (55°)7– (45–)16 (61) | 14° (57°)9– (48–)18 (64) | 14° (57°)9– (48–)18 (64) | 13° (55°)7– (45–)17 (63) | 11° (52°)4– (39–)16 (61) | 7° (45°)0– (32–)13 (55) | 5° (41°)-3– (27–)11 (52) |
☀️Sunshine | 3h UV 2 | 4h UV 3 | 5h UV 5 | 8h UV 7 | 8h UV 7 | 8h UV 7 | 9h UV 7 | 8h UV 7 | 7h UV 6 | 5h UV 4 | 3h UV 3 | 3h UV 2 |
🌊Water Temp | 9° (48°) | 9° (48°) | 10° (50°) | 12° (54°) | 14° (57°) | 17° (63°) | 19° (66°) | 20° (68°) | 19° (66°) | 16° (61°) | 13° (55°) | 11° (52°) |
🌧Rain Days | 8d54mm (2.1") | 7d47mm (1.9") | 7d42mm (1.6") | 6d39mm (1.5") | 6d51mm (2.0") | 6d47mm (1.9") | 5d40mm (1.6") | 5d48mm (1.9") | 5d49mm (1.9") | 8d67mm (2.6") | 10d79mm (3.1") | 10d74mm (2.9") |
Best travel time current monthØ = average · small figures = range: coolest–warmest day / coldest–warmest nightClimate data 2005–2025 · Source: ERA5 + station data
Peak season — flights and hotels at their annual highest. Book early.
August is one of the best months to visit Brittany — with 8 sunshine hours per day and pleasant highs of 22°C (72°F).
Daytime highs average 22°C (72°F), cooling to 14°C (57°F) at night (daily average: 18°C (64°F)). Peaks reach around 29°C (84°F), the coldest nights around 9°C (48°F). The sun shines an average of 8 hours per day; there are 5 rain days with 48 mm (1.9 in) total. The sea is 20°C (68°F) — refreshing and manageable for confident swimmers.
Layer up — warm days and cool evenings alternate. Perfect timing for hikes and sightseeing.
High summer on the coast: with 20 to 22°C (68 to 72°F) by day and seven to eight hours of sun, beach life, markets and festivals are in full swing and Saint-Malo and the coastal towns are packed. The sea becomes comfortably warm at about 19 to 20°C (66 to 68°F) in August, while tides and currents still dictate the swimming plan.
Events & Festivals
- Festival Interceltique de Lorientlate July to early August (10 days)
Ten days of Celtic music and culture from Brittany and the other Celtic nations in Lorient. The highlight is the Grand Parade of the Celtic Nations through the town.
Packing list for Brittany in August
- Long-sleeved shirts and light trousers
- Light jacket
- Swimwear (the water is still a little fresh)
- SPF 50 sunscreen
- Sunglasses
- Sun hat
- Small umbrella (occasional showers possible)
- Travel first-aid kit
Frequently Asked Questions
- Is August a good time to visit Brittany?
- Yes — August is one of the best months to visit Brittany (Climate Score: 71/100). Pleasant temperatures (22°C (72°F)), good sunshine (8 h/day), and few rain days (5) make it one of the most recommended months.
- How warm is it in Brittany in August?
- In August, Brittany sees daily highs of 22°C (72°F). Nights cool to 14°C (57°F), with a daily average of 18°C (64°F). Peaks reach around 29°C (84°F), the coldest nights around 9°C (48°F).
- How much rain falls in Brittany in August?
- In August, Brittany receives an average of 48 mm (1.9 in) of rain over 5 rain days. That is comparatively dry.
- How many sunshine hours does Brittany get in August?
- Brittany averages 8 sunshine hours per day in August — above the annual average.
- How warm is the water in Brittany in August?
- Water temperature in Brittany in August averages 20°C (68°F) — refreshing but slightly cool for sensitive swimmers.
