Weather in Nantes in April

A good month. April is a solid month to be in Nantes. Highs average 16.2 °C, lows 6 °C, and rain falls on 10 days — nothing in the month is working against you.

April ranks 6 of 12 in Nantes: past the worst of the year but short of September, which is the month to book if the dates are open.

Rain on 10 days, 2 of them heavy. Enough to need a plan B, not enough to need a plan around it. Pack for 16.2 °C days and 6 °C nights; the spread matters more here than any single number.

What the averages hide

The averages here are honest — no hidden extremes worth planning around. Across the twenty years measured, the hottest April day reached 26.9 °C and the coldest night fell to -3.6 °C, and the wettest single day dropped 30 mm — roughly 56% of the month's rain in one day.

April is moderately variable: 16 mm in the driest year against 128 mm in the wettest, around an average of 54 mm. Roughly two Aprils in three land near that average, and the third does something else entirely.

Wind is light at 10.1 km/h, so the temperature on the page is close to the temperature on your skin, and humidity runs at 80%, high enough to notice on the warm days without dominating them.

How April sits in the year

The month is on the way up: 3.1 °C warmer than March, and May adds another 3 °C. Late in the month feels noticeably different from the start of it, which is worth knowing if the trip is short.

Daylight in April

13.6 hours of daylight, gaining 1.6 hours across the month. That is between Nantes's extremes of 15.9 and 8.5 hours, so days are long enough not to constrain the plan.

Sea temperature

The sea sits at about 12.6 °C in April — too cold to swim without a wetsuit. The sea peaks at 20.5 °C in August and bottoms out at 11.1 °C — water lags the air by a month or two, which is why the best swimming often comes after the best weather.

How busy it gets

Shoulder. The value months — prices ease off and you get the place closer to itself.

Crowd levels are estimated from climate desirability and school-holiday calendars, not from visitor numbers.

April in Nantes versus nearby

If Nantes is one option among several, the nearby comparison is worth making. Bordeaux is close enough to be a coin toss — within a degree on temperature, 1 day more rain. Le Havre is the weaker option in April — 3.3 °C cooler, the same number of rain days.

So: April works, with September the better month by 17 points if the dates can move. If they cannot, nothing here should stop you booking.

Every month in Nantes

See all twelve months in Nantes, or where else to go in April.