Weather in Lille in April
France · 20-year averages, April
A good month. April is a solid month to be in Lille. Highs average 15.3 °C, lows 4.6 °C, and rain falls on 10 days — nothing in the month is working against you.
April ranks 6 of 12 in Lille: past the worst of the year but short of June, which is the month to book if the dates are open.
Rain on 10 days, 0 of them heavy. Enough to need a plan B, not enough to need a plan around it. Pack for 15.3 °C days and 4.6 °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 26.1 °C and the coldest night fell to -4.6 °C.
April is moderately variable: 1 mm in the driest year against 95 mm in the wettest, around an average of 40 mm. Roughly two Aprils in three land near that average, and the third does something else entirely.
Wind is light at 10.3 km/h, so the temperature on the page is close to the temperature on your skin, and humidity runs at 79%, high enough to notice on the warm days without dominating them.
How April sits in the year
The month is on the way up: 4.1 °C warmer than March, and May adds another 3.1 °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
13.7 hours of daylight, gaining 1.8 hours across the month. That is between Lille's extremes of 16.4 and 8 hours, so days are long enough not to constrain the plan.
An inland climate
Despite being inland, the year stays fairly even: 22.6 °C between the year's warmest afternoons and coldest nights.
How busy it gets
Busy. Popular without being frantic; book the things you care about, improvise the rest.
Crowd levels are estimated from climate desirability and school-holiday calendars, not from visitor numbers.
April in Lille versus nearby
If Lille is one option among several, the nearby comparison is worth making. Breda is close enough to be a coin toss — within a degree on temperature, the same number of rain days. Rotterdam is the weaker option in April — 2.7 °C cooler, the same number of rain days.
So: April works, with June the better month by 12 points if the dates can move. If they cannot, nothing here should stop you booking.
Every month in Lille
| Month | High °C | Low °C | Rain days | Rain mm | Humidity % | Daylight h | Score |
|---|---|---|---|---|---|---|---|
| January | 6.1 | 0.5 | 14 | 61 | 92 | 8.4 | 32 |
| February | 7.5 | 0.5 | 12 | 55 | 89 | 10 | 39 |
| March | 11.2 | 2.2 | 11 | 53 | 84 | 11.8 | 53 |
| April | 15.3 | 4.6 | 10 | 40 | 79 | 13.7 | 69 |
| May | 18.4 | 7.9 | 11 | 59 | 78 | 15.4 | 76 |
| June | 21.3 | 10.9 | 11 | 61 | 78 | 16.4 | 81 |
| July | 23.1 | 13 | 13 | 67 | 78 | 16.1 | 78 |
| August | 22.9 | 13 | 13 | 73 | 79 | 14.6 | 76 |
| September | 20.2 | 10.3 | 11 | 52 | 81 | 12.7 | 81 |
| October | 15.9 | 7.6 | 13 | 65 | 86 | 10.8 | 65 |
| November | 10.5 | 4.3 | 15 | 71 | 92 | 9 | 44 |
| December | 6.6 | 1.3 | 14 | 74 | 94 | 8 | 33 |
See all twelve months in Lille, or where else to go in April.
Planning the rest of the trip
- Flight time to Lille how long you are actually in the air
- Lille time zone and the difference from home
- Days until your trip count down to the departure date