Live Weather & Forecast
Weather in Guyancourt
Île-de-France, France · Real-time conditions & 3-day outlook
17°C
Feels like 17°C
63°F / Feels 63°F
Partly cloudy
Guyancourt, Île-de-France
🌞 Daytime
Updated: 2026-04-16 15:00
Humidity
52%
Wind
11.9 km/h WSW
Wind Gust
13.7 km/h
Pressure
1023 mb
Visibility
10 km
UV Index
4.7
(Moderate)
Precipitation
0 mm
Cloud Cover
75%
Dew Point
4.7°C
Wind Degree
249°
Air Quality Index
US EPA: Good
UK DEFRA: Low (1)
CO
146.9 μg/m³
NO₂
2.9 μg/m³
O₃
83 μg/m³
SO₂
1.1 μg/m³
PM 2.5
6.4 μg/m³
PM 10
12.4 μg/m³
Today's Hourly Forecast
24-hour breakdown for Guyancourt, Île-de-France
12 AM
11°
Cloudy
1 AM
11°
Mist
2 AM
10°
Mist
3 AM
9°
Mist
4 AM
9°
Mist
5 AM
8°
Mist
6 AM
8°
Clear
7 AM
7°
Partly Cloudy
8 AM
8°
Partly Cloudy
9 AM
9°
Sunny
10 AM
11°
Sunny
11 AM
13°
Sunny
12 PM
15°
Sunny
1 PM
16°
Partly Cloudy
2 PM
17°
Partly Cloudy
3 PM
17°
Partly cloudy
4 PM
18°
Cloudy
5 PM
18°
Cloudy
6 PM
17°
Overcast
7 PM
16°
Overcast
8 PM
15°
Overcast
9 PM
14°
Partly Cloudy
10 PM
13°
Partly Cloudy
11 PM
12°
Partly Cloudy
3-Day Forecast
Daily overview for Guyancourt, Île-de-France
Today
Partly Cloudy
18°
/
7°
🌧️ 0% chance of rain
💧 Avg. humidity: 70%
💨 Max wind: 11.9 km/h
🌧️ Total precip: 0 mm
☀️ UV Index: 1.3
🌅 Sunrise: 07:00 AM
🌇 Sunset: 08:45 PM
🌙 Waning Crescent
🌑 Moon: 3% lit
Fri, Apr 17
Partly Cloudy
20°
/
10°
🌧️ 0% chance of rain
💧 Avg. humidity: 63%
💨 Max wind: 9.4 km/h
🌧️ Total precip: 0.1 mm
☀️ UV Index: 0.9
🌅 Sunrise: 06:58 AM
🌇 Sunset: 08:46 PM
🌙 New Moon
🌑 Moon: 0% lit
Sat, Apr 18
Patchy rain nearby
16°
/
9°
🌧️ 87% chance of rain
💧 Avg. humidity: 70%
💨 Max wind: 18.7 km/h
🌧️ Total precip: 0.5 mm
☀️ UV Index: 1
🌅 Sunrise: 06:56 AM
🌇 Sunset: 08:48 PM
🌙 Waxing Crescent
🌑 Moon: 1% lit
Best Time to Visit Guyancourt
Plan your trip to Guyancourt, France around the most favorable weather conditions.
Peak Season
June – September
Warm, dry summers — ideal for outdoor activities.
Shoulder Season
April – May, October
Fewer crowds, moderate prices, mild weather.
Off Season
November – March
Cooler temperatures; some regions may experience rain or snow.
Frequently Asked Questions
What is the current weather in Guyancourt?
Current conditions in Guyancourt: Partly cloudy, temperature 17°C, humidity 52%.
What is the best time to visit Guyancourt?
The best time to visit Guyancourt is typically June – September. Warm, dry summers — ideal for outdoor activities.
What is the climate like in Guyancourt?
Guyancourt is located at approximately 48.8° latitude. It has a temperate climate with warm summers and cold winters.
Does it rain a lot in Guyancourt?
The wettest period in Guyancourt is typically during November – March. Cooler temperatures; some regions may experience rain or snow.
What should I pack for a trip to Guyancourt?
For visits to Guyancourt during June – September: light clothing and sun protection. For November – March: layers and a waterproof jacket are recommended.
What country is Guyancourt in?
Guyancourt is located in France, in the state of Île-de-France.
What are the public holidays in Guyancourt in 2026?
View the 2026 public holidays for Guyancourt on our Holidays page.
What are the GPS coordinates used for the weather forecast in Guyancourt?
The weather forecast for Guyancourt uses coordinates 48.7709, 2.0706.