France · 30-year monthly climate averages
Based on 30 years of climate data, the most comfortable months to visit Nantes are June, July and September, when daytime temperatures are agreeable and rainfall is relatively low.
Nantes sees its warmest weather in August, when daytime highs average around 25°C, and its coolest in January (around 9°C).
Annual precipitation totals roughly 820mm — December is typically the wettest month (~101mm) and July the driest (~44mm).
Rainfall is spread fairly evenly through the year, so no single season is dramatically wetter than the rest.
August is the sunniest month, with about 232 hours of sunshine.
🟧 avg daytime high · 🟦 dashed: avg nighttime low · bars: monthly rainfall
Daily forecast highs vs the 30-year normal — last 61 days
Each bar is one day: orange above normal, blue below.
| Month | High / Low | Rainfall | Travel rating |
|---|---|---|---|
| January | 9° / 3°C | 88mm | 🤔 Fair |
| February | 11° / 3°C | 68mm | 🤔 Fair |
| March | 14° / 5°C | 58mm | 👍 Good |
| April | 16° / 7°C | 58mm | 👍 Good |
| May | 20° / 10°C | 61mm | 🌟 Great |
| June | 23° / 13°C | 49mm | 🌟 Great |
| July | 25° / 14°C | 44mm | 🌟 Great |
| August | 25° / 14°C | 50mm | 🌟 Great |
| September | 22° / 12°C | 60mm | 🌟 Great |
| October | 18° / 10°C | 89mm | 👍 Good |
| November | 13° / 6°C | 94mm | 🤔 Fair |
| December | 10° / 4°C | 101mm | ⚠️ Challenging |
January in Nantes is chilly, with average daytime highs around 9°C (49°F) and nighttime lows near 3°C (38°F). Expect roughly 88mm of precipitation spread over about 13 rainy days, with a moderate amount of rain.
☀️ About 72 hours of sunshine over the month (~2h/day).
🎒 What to pack — jacket or coat · long-sleeve layers
February in Nantes is chilly, with average daytime highs around 11°C (51°F) and nighttime lows near 3°C (37°F). Expect roughly 68mm of precipitation spread over about 11 rainy days, with a moderate amount of rain.
☀️ About 102 hours of sunshine over the month (~3h/day).
🎒 What to pack — jacket or coat · long-sleeve layers
March in Nantes is chilly, with average daytime highs around 14°C (56°F) and nighttime lows near 5°C (41°F). Expect roughly 58mm of precipitation spread over about 9 rainy days, with little rainfall.
☀️ About 147 hours of sunshine over the month (~5h/day).
🎒 What to pack — jacket or coat · long-sleeve layers
April in Nantes is mild, with average daytime highs around 16°C (61°F) and nighttime lows near 7°C (44°F). Expect roughly 58mm of precipitation spread over about 10 rainy days, with little rainfall.
☀️ About 182 hours of sunshine over the month (~6h/day).
🎒 What to pack — light jacket · layers for cool evenings
May in Nantes is pleasantly warm, with average daytime highs around 20°C (67°F) and nighttime lows near 10°C (50°F). Expect roughly 61mm of precipitation spread over about 10 rainy days, with a moderate amount of rain.
☀️ About 203 hours of sunshine over the month (~7h/day).
🎒 What to pack — light layers · comfortable walking shoes
June in Nantes is pleasantly warm, with average daytime highs around 23°C (73°F) and nighttime lows near 13°C (55°F). Expect roughly 49mm of precipitation spread over about 8 rainy days, with little rainfall.
☀️ About 213 hours of sunshine over the month (~7h/day).
🎒 What to pack — light layers · comfortable walking shoes
July in Nantes is warm, with average daytime highs around 25°C (77°F) and nighttime lows near 14°C (58°F). Expect roughly 44mm of precipitation spread over about 7 rainy days, with little rainfall.
☀️ About 229 hours of sunshine over the month (~8h/day).
🎒 What to pack — light summer clothing · sunscreen and sunglasses
August in Nantes is warm, with average daytime highs around 25°C (78°F) and nighttime lows near 14°C (58°F). Expect roughly 50mm of precipitation spread over about 7 rainy days, with little rainfall.
☀️ About 232 hours of sunshine over the month (~8h/day).
🎒 What to pack — light summer clothing · sunscreen and sunglasses
September in Nantes is pleasantly warm, with average daytime highs around 22°C (72°F) and nighttime lows near 12°C (53°F). Expect roughly 60mm of precipitation spread over about 8 rainy days, with little rainfall.
☀️ About 198 hours of sunshine over the month (~7h/day).
🎒 What to pack — light layers · comfortable walking shoes
October in Nantes is mild, with average daytime highs around 18°C (64°F) and nighttime lows near 10°C (49°F). Expect roughly 89mm of precipitation spread over about 12 rainy days, with a moderate amount of rain.
☀️ About 122 hours of sunshine over the month (~4h/day).
🎒 What to pack — light jacket · layers for cool evenings
November in Nantes is chilly, with average daytime highs around 13°C (55°F) and nighttime lows near 6°C (43°F). Expect roughly 94mm of precipitation spread over about 13 rainy days, with a moderate amount of rain.
☀️ About 91 hours of sunshine over the month (~3h/day).
🎒 What to pack — jacket or coat · long-sleeve layers
December in Nantes is chilly, with average daytime highs around 10°C (50°F) and nighttime lows near 4°C (39°F). Expect roughly 101mm of precipitation spread over about 14 rainy days, with a moderate amount of rain.
☀️ About 77 hours of sunshine over the month (~3h/day).
🎒 What to pack — jacket or coat · long-sleeve layers