Grande-Synthe Weather Today

Temperature, Feels Like, Rain Chance & Hourly Forecast in Grande-Synthe

Grande-Synthe temperature today is 17°, feels like 17°, with a humidity level of 89% and wind at 19.26 km/h. Rain chance today is 0%. Use the hourly forecast and 5-day outlook below to plan your day.

Tomorrow in Grande-Synthe: expect a high of 18° and a low of 15°, with light rain. Rain chance tomorrow is 68%.

scattered clouds
17°
scattered clouds
H: 17° L: 17°
Feels like 17°
AQI: (/5)
Humidity
89%
Dew 15°
Wind speed
19.26 km/h
WSW · G33.98
Pressure
1015 hPa
Visibility
10 km
Windy Conditions
Wind speed is 19.26 km/h.
High Humidity
Humidity is 89%. May feel uncomfortable.
Weather Summary
Currently in Grande-Synthe, expect varied conditions with mild temperatures around 17°. Winds are moderate winds. High humidity may make it feel uncomfortable.
Precipitation Probability
0%
23
0%
02
68%
05
49%
08
34%
11
35%
14
20%
17
28%
20
29%
23
0%
02
0%
05
17%
08
26%
11
100%
14
68%
17
31%
20
Evolution
Daily Weather Forecast Evolution (°C)
Lowest temperature
Highest temperature
Temperature Forecast (48h)
18°
Tue
23:00
17°
 
16°
 
15°
 
17°
Wed
11:00
18°
 
18°
 
17°
 
15°
Wed
23:00
14°
 
15°
 
15°
 
18°
Thu
11:00
17°
 
17°
 
17°
 
Hot (≥30°)
Warm
Cool
Cold (<0°)
Weather Map
Sun & Moon
Sunrise
Sunrise
07:25
Sunset
Sunset
20:06
Moon Phase
Waxing Crescent (18%)
Timezone: GMT+05:30
Last updated: Sep 16, 2026 1:50 AM · Data refreshes every 5 min
Location Info
Latitude
Latitude
51.015400
Longitude
Longitude
2.299750
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More about Grande-Synthe
Content curated by the NearWeather editorial team · Updated periodically

Climate and Weather in Grande-Synthe, France

Grande-Synthe is a city located in the Nord department of the Hauts-de-France region in northern France. The city has a maritime climate influenced by its proximity to the North Sea. The weather in Grande-Synthe is characterized by mild summers, cool winters, and moderate rainfall throughout the year.

Temperature

The average annual temperature in Grande-Synthe ranges from 9°C (48°F) to 13°C (55°F). Summers are generally mild, with average temperatures in July and August ranging from 15°C (59°F) to 20°C (68°F). The warmest month is typically July, with average highs of around 22°C (72°F). Winters are cool, with temperatures in December, January, and February averaging between 2°C (36°F) and 6°C (43°F). The coldest month is usually January, with average lows of around 1°C (34°F).

Precipitation

Grande-Synthe experiences moderate rainfall throughout the year. The wettest months are typically October and November, with average precipitation levels of around 50 mm (2 inches) per month. The driest months are usually February and March, with average precipitation levels of around 30 mm (1 inch) per month. The annual average precipitation in Grande-Synthe is approximately 700 mm (28 inches).

Sunshine

Grande-Synthe receives an average of 1,600 hours of sunshine per year. The sunniest months are typically June and July, with an average of around 200 hours of sunshine each. The cloudiest months are typically December and January, with an average of around 50 hours of sunshine each.

Wind

Due to its coastal location, Grande-Synthe is often affected by strong winds. The prevailing winds in the region come from the west and southwest. The average wind speed in Grande-Synthe is around 15 km/h (9 mph), with gusts occasionally reaching higher speeds during storms.

Climate Graph

The following climate graph illustrates the average monthly temperature and precipitation levels in Grande-Synthe throughout the year:
Month Temperature (°C) Precipitation (mm)
January 2 40
February 3 30
March 5 30
April 7 40
May 11 40
June 15 40
July 17 40
August 17 50
September 14 50
October 10 60
November 6 50
December 3 40

Best Time to Visit

The best time to visit Grande-Synthe is during the summer months from June to August when the temperatures are mild and the weather is generally pleasant. This is the ideal time to enjoy outdoor activities and explore the beautiful coastal areas in and around Grande-Synthe.

Conclusion

Grande-Synthe experiences a maritime climate with mild summers, cool winters, and moderate rainfall throughout the year. The city's proximity to the North Sea influences its weather patterns, with strong winds occasionally blowing in from the west and southwest. Visitors can expect average temperatures ranging from 9°C (48°F) to 13°C (55°F) and an average annual precipitation of approximately 700 mm (28 inches). The summer months are the best time to visit, offering pleasant weather for outdoor activities and exploration.
Weather data sourced from OpenWeatherMap. Forecasts are estimates and may differ from actual conditions. For severe weather, consult your local meteorological authority.
FAQ's about Grande-Synthe
What is the temperature in Grande-Synthe right now?

The current temperature in Grande-Synthe is 17°, and it feels like 17°. Today's high is 17° and the low is 17°.

Will it rain in Grande-Synthe today?

No rain is expected in Grande-Synthe today (0% chance). Conditions are currently scattered clouds.

What is the weather in Grande-Synthe today?

Grande-Synthe is experiencing scattered clouds with a temperature of 17°. Humidity is at 89% and wind speed is 19.26 km/h from the WSW.

What is the humidity in Grande-Synthe today?

Humidity in Grande-Synthe is 89% right now, with a dew point of 15°. Conditions may feel muggy or uncomfortable.

What is the wind speed in Grande-Synthe today?

Wind speed in Grande-Synthe is 19.26 km/h, flowing at 254° WSW wind direction. Gusts up to 33.98 km/h.

What is the 5-day forecast for Grande-Synthe?

NearWeather provides a detailed 5-day forecast and 48-hour hourly forecast for Grande-Synthe. Today's high is 17° and low is 17°, with a 0% chance of rain. Scroll up to view the full day-by-day and hourly breakdown.

What does it feel like in Grande-Synthe today?

It feels like 17° in Grande-Synthe today, with 40% cloud cover and 10 km visibility.

Weather in Grande-Synthe