Witternesse has cooler summers than 93% of mainland French towns
January mornings start at about 1.1°C. Its yearly rainfall tops that of 90% of mainland French towns. Temperatures cover 22°C across the year, low to high. Keep the boiler serviced for the months from November to April, which average under 10°C.
Figures from Météo-France’s Fiefs station, 12 km south.
A year in Witternesse at a glance
Each month’s typical high and low in °C, at the Fiefs station.
What a year in Witternesse feels like
Typical highs and lows by season and by month, from Météo-France’s 1991–2020 normals at Fiefs.
About 1,071 mm of rain a year
December is the wettest month and April the driest. About 33 days a year bring 10 mm or more. 3rd wettest of 131 towns of 2,500+ in Pas-de-Calais.
Rain by month
Millimeters
Sunshine by month
Hours of sunshine at Lille-Lesquin
A frosty town: 53 frosts and 29 days of 25°C a year
On about 53 nights a year the air drops to 0°C or below, and on about 7 days it stays below freezing all day. About 29 days a year reach 25°C, and 6 reach 30°C.
Day counts are Météo-France’s 1991–2020 normals at Fiefs: a frost is a night of 0°C or below, a summer day (jour d’été) 25°C or more, a hot day (forte chaleur) 30°C or more.
The Météo-France station at Fiefs
Fiefs is 12 km south of Witternesse. Every figure on this page is the station’s, not a measurement in Witternesse itself.
| Station (Météo-France number) | Fiefs (62333001) |
| Distance from the town | 12 km south |
| Station altitude | 180 m |
| Town altitude (its center) | 24 m |
| Period | 1991–2020 |
| Nearest station of any kind | 9.9 km |
| Sunshine measured at | Lille-Lesquin, 52 km away |
Witternesse sits 156 m lower than the station. Air usually warms by about 0.65°C every 100 m you go down, so expect Witternesse to run about 1°C warmer than these figures.
TownRatings matches each commune to one station with at least 24 years of temperature and rain records: the nearest, counting every 100 m of height difference as 10 km, never across the sea.
How Witternesse compares
Against the 4,385 towns of 2,500 or more in mainland France, each read from its own matched station. The dots are the other towns of 2,500+ in Pas-de-Calais.
Nearby towns’ climate
The nearest towns of 2,500+ within 29 km. Where a neighbor uses the same station its figures are the same: the differences you’d feel over a few kilometers aren’t in the normals.
| Town | Station | July high | January low | Rain a year |
|---|---|---|---|---|
| Witternesse | Fiefs | 22.7°C | 1.1°C | 1,071 mm |
| Aire-sur-la-Lys 3.8 km | Watten | 23.7°C 1°C warmer | 2.0°C 0.9°C milder | 823 mm |
| Isbergues 6.8 km | Watten | 23.7°C 1°C warmer | 2.0°C 0.9°C milder | 823 mm |
| Lillers 9.8 km | same station | 22.7°C about the same | 1.1°C about the same | 1,071 mm |
| Burbure 11 km | same station | 22.7°C about the same | 1.1°C about the same | 1,071 mm |
| Saint-Venant 12 km | Watten | 23.7°C 1°C warmer | 2.0°C 0.9°C milder | 823 mm |
| Blendecques 13 km | Watten | 23.7°C 1°C warmer | 2.0°C 0.9°C milder | 823 mm |
Witternesse weather by month
Average daily high and low, mean temperature and rain, 1991–2020, at the Fiefs station; sunshine at Lille-Lesquin.
| Month | High | Low | Mean | Rain | Sun (hours) |
|---|---|---|---|---|---|
| January | 6.0°C | 1.1°C | 3.5°C | 104 mm | 62 |
| February | 6.9°C | 1.2°C | 4.0°C | 87 mm | 74 |
| March | 10.3°C | 2.8°C | 6.6°C | 76 mm | 127 |
| April | 14.2°C | 4.7°C | 9.4°C | 64 mm | 176 |
| May | 17.6°C | 7.8°C | 12.7°C | 76 mm | 196 |
| June | 20.4°C | 10.7°C | 15.5°C | 74 mm | 202 |
| July | 22.7°C | 12.8°C | 17.7°C | 81 mm | 210 |
| August | 22.7°C | 12.9°C | 17.8°C | 85 mm | 197 |
| September | 19.3°C | 10.4°C | 14.9°C | 83 mm | 155 |
| October | 14.7°C | 7.6°C | 11.1°C | 101 mm | 115 |
| November | 9.7°C | 4.3°C | 7.0°C | 113 mm | 62 |
| December | 6.6°C | 1.8°C | 4.2°C | 126 mm | 53 |
| Year | 14.3°C | 6.5°C | 10.4°C | 1,071 mm | 1,627 |
Where Witternesse’s numbers come from
Averages over 30 years, not a forecast.
- Temperature, rain and day counts: Météo-France’s fiche climatologique for Fiefs, 12 km away: statistics for 1991–2020.
- Which station: among stations with at least 24 of the 30 years of temperature and rain, the nearest to the commune’s population-weighted center, counting each 100 m of height difference as 10 km; mainland towns use mainland stations and each overseas département its own.
- Altitudes: the town’s from IGN’s RGE ALTI® at its population-weighted center; the station’s from Météo-France.
- Sunshine: the nearest station with at least 10 years of sunshine records, Lille-Lesquin, 52 km away.
- Comparisons: every town of 2,500 or more in mainland France, read the same way; the dots are the towns of 2,500+ in Pas-de-Calais.
Météo-France fiches climatologiques · IGN RGE ALTI®. Licence Ouverte 2.0.
Questions about Witternesse’s climate
How warm does Witternesse get in summer?
July is the warmest month, with average highs of 22.7°C. About 29 days a year reach 25°C, fewer than 92% of mainland French towns, and about 6 reach 30°C.
How cold does Witternesse get in winter?
January nights average 1.1°C. The air drops to 0°C or below on about 53 nights a year, and about 7 days a year stay below freezing all day.
How much rain does Witternesse get?
About 1,071 mm a year, more than 90% of mainland French towns. December is the wettest month (126 mm) and April the driest (64 mm).
How sunny is it?
The nearest Météo-France station that records sunshine, Lille-Lesquin (52 km away), averages 1,627 hours of sunshine a year.
Are these figures for Witternesse itself?
No: they are the normals of the Météo-France station matched to Witternesse, Fiefs, 12 km away. France publishes its climate normals by station, not by commune; a valley, a hill or the sea can make a difference over a few kilometers.
Where do these figures come from?
Météo-France’s fiches climatologiques: 30-year averages (1991–2020) for each of its long-running stations, published as open data since 2024. They are normals, not a forecast.
Source: Météo-France, fiches climatologiques, 1991–2020 statistics (station FIEFS, edited 15/10/2026); altitude: IGN, RGE ALTI®. Licence Ouverte 2.0. Today’s forecast for Witternesse →
Contains public sector information under the Licence Ouverte / Open Licence 2.0 (Etalab): INSEE, DGFiP, the Interior Ministry’s statistics service (SSMSI), the Ministry of Education (DEPP), the Health Ministry’s statistics service (DREES) and the Housing Ministry (Carte des loyers). Commune boundaries: IGN Admin Express.