Nantes weather in April

April in Nantes: cool, a little rain, with clean air — an excellent time to visit.

Updated September 2026 · climate normals from ERA5 reanalysis

Nantes🇫🇷 France · Western Europe · City81
  1. 55Jan
  2. 65Feb
  3. 71Mar
  4. 81Apr
  5. 86May
  6. 93Jun
  7. 91Jul
  8. 92Aug
  9. 89Sep
  10. 76Oct
  11. 64Nov
  12. 58Dec

#6 of 12 months in Nantes · #577 of 1413 destinations to visit in April · comfort 81/100 (tier A)

Days
17°C
Nights
7°C
Wet days
8
Sun
9.9 h
Humidity
74%
Daylight
14 h
Nantes, France
Photo: Adrien Olichon · Pexels

Traveller notes on Nantes in April

Regulars describe this month as genuinely fifty-fifty, warm or cold and sunny or rainy with no reliable way to predict which combination a trip will get, though they're consistent that flowers are everywhere by this point, making gardens and walks along the Loire especially rewarding regardless of the forecast. Our row backs that mild, genuinely wet read, 17.1C over 6.9C nights feeling 4C, with 49.9mm of rain across 8.3 days and humidity at 74 percent. Regulars are consistent layers remain the standard advice given the real coin-flip nature of the month, a light rain jacket worth having even on a promising-looking morning. The record: 9.9 hours of sun, an 18.7 kph wind and AQI 37.
FiftyFiftyOddsButFlowersAreEverywhere · April · 1 month ago · Read more on Tripadvisor ↗

Other months in Nantes

Regulars call May the start of the better half of the year here, running through September, when the seaside day trips this city is known for become genuinely pleasant and the days stretch out. The nearby month they describe most vividly is unpredictable rather than settled - warm and cold, sunny and rainy in roughly equal measure - and our row backs that with 20.7C reading as 19C over 10.3C nights and 56.6mm of rain across 8.7 days. The compensation regulars name specifically is the Jardin des Plantes, where camellias and other spring flowers are in bloom by now, a reliable outdoor draw whatever the sky decides on a given day. The record: humidity 73 percent, 11.2 hours of sun, an 18.8 kph wind and AQI 39.
FlowersEverywhereWeatherFiftyFifty · May · 1 month ago · Read more on Tripadvisor ↗
Asked which month, regulars give May to September and their reasons are the coast and the light rather than the city itself - this is an Atlantic town with beaches within reach, and it wants long evenings to use them. September is the last month of that window and shows it: daylight is down to 12.6 hours from midsummer's sixteen. The trade is a gentler set of numbers, 23.1C days over 12.4C nights with 57.9mm across 8.7 days, the driest stretch of this coast's year. An 18.1 kph westerly keeps it feeling a degree under the reading. One local point worth knowing: the castles people picture on the Loire are upriver, a train ride away, not here. The record: 9.4 hours of sun and AQI 35.
TheEndOfTheSeasideWindow · September · 1 month ago · Read more on Tripadvisor ↗
The worry regulars hear most about a French August is whether everything will be shut, and their answer is that this stopped being true a long time ago: some French take July and some take August, and in places that see tourists the opening hours actually lengthen rather than disappear. May to September is the window they name for Nantes, partly because the coast is close and the evenings are long - our row gives 14.2 hours of daylight and 11.1 hours of sun. August here is mild rather than fierce at 26.3C, dropping to 14.8C at night, with 37.3mm across 7.3 precipitation days. The record: humidity 69 percent, a 17.4 kph wind and AQI 33.
FranceDoesNotShutAnyMore · August · 1 month ago · Read more on tripadvisor.co.uk ↗
June in Nantes is a coin toss on the Nantes forum's account - visitors report overcast, windy and wet Junes as readily as the late-June weeks that come out 20 to 30C - and the local answer is that the city is built for either. Les Machines de l'Ile, the mechanical elephant and the Marine Carousel, is largely weatherproof and is what regulars send people to first; book ahead and go in the morning, when it is quieter. The Chateau des Ducs de Bretagne, the cathedral and the Jardin des Plantes fill the rest. This part of the Loire is not crowded even in July and August, and less so in June. The record: 24.3C days, 13.9C nights, 9 precipitation days, 11.4 hours of sun in a 16-hour day, AQI 39.
ElephantInTheMorning · June · 1 month ago · Read more on Tripadvisor ↗

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Nantes climate normals — April

Daytime high17°C / 63°F🙂 cool
Nighttime low7°C / 44°F
Feels like (high)15°C / 59°F
Rainfall50 mm / 2 in🌦 some rain
Rainy days8 days
Humidity74%💧 humid
Dew point7°C / 44°F
Sunshine9.9 h/day
Daylight13.6 h
Wind19 km/h / 12 mph
Air quality (US AQI)37🍃 good

Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.

Crowds in Nantes in April

How busy the place itself is — school and mass holidays, the months an editor tagged, and how sought-after the weather makes them. Never part of the comfort score.

Peak crowdsCarnaval de Nantes, Spring holidays in France, school holidays in 5 of the markets that fill it(estimated)

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Peak crowdsBusyShoulder seasonQuiet

Best months for Nantes's weather

Ranked by this destination's own climate comfort score across the year — a different thing from how busy it gets (see Crowds above).

Fair weatherNantes's weather peaks June–August.

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Best weatherFair weatherToughest weather

What's on in Nantes in April

Recurring seasonal events, natural spectacles, closures and holidays — curated and sourced.

  • Festival

    Carnaval de Nantes

    20 Mar – 20 Apr · usuallyCarnivalCrowded

    Giant floats built by volunteers over the winter parade through the city centre from Place Foch on a spring Sunday afternoon, with a separate night parade a couple of weeks later. Source ↗

  • Festival

    Marathon de Nantes

    15–30 Apr · usuallySporting event

    A late-April running weekend: a 10 km night race from the Machines de l'Ile on the Saturday, then the marathon and half on Sunday, with road closures along the Loire. Source ↗

What's on around the world in April →

Nearby, and something's on

Within 300 km of Nantes — a day trip or a short hop — with something on this month. Never part of the comfort score.

Where is Nantes?

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Nantes in April — FAQ

Is April a good time to visit Nantes?
April in Nantes: cool, a little rain, with clean air — an excellent time to visit. It ranks #6 of 12 months for Nantes on SeasonMap's comfort score (81/100).
What is the weather like in Nantes in April?
In April, Nantes averages a daily high of 17.1°C and a low of 6.9°C, with about 49.9 mm of rain over roughly 8.3 rainy days.
What is the air quality in Nantes in April?
Nantes has a mean US Air Quality Index of about 37 in April.

Within 300 km: La Rochelle's Oyster and mussel season around 1 Sep – 30 Apr, and Bordeaux's Oyster season on the Bassin around 1 Sep – 30 Apr.