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Guyancourt Weather in May
In Guyancourt, May brings pleasant daytime temperatures around 20°C (68°F), with nights cooling to 9°C (48°F). Expect quite a bit of rainfall this month.
Rainfall in Guyancourt in May
Typically, about 16 days will experience rainfall, with an average of 71 mm (2.8 in) for the month. Expect plenty of grey, overcast days rather than intense storms. The rain rarely amounts to much on any given day.
Temperature in Guyancourt in May
May tends to be one of the excellent months in Guyancourt, with 20°C (68°F) in the afternoon and 9°C (48°F) overnight. A light jacket or extra layer can be useful, especially outside the warmest hours of the day. At 9°C (48°F) overnight, it gets properly cold after dark. On the bright side, cold nights tend to make for excellent sleeping conditions.
Sunshine in Guyancourt in May
With approximately 200 hours of sunshine, the days are filled with clear skies. It makes it a perfect month for being outside.If you're inclined towards comfortable temperatures and drier conditions, May is a good time to visit Guyancourt.
Guyancourt Temperature in May
Min Temperature
9°C (48°F)
Max Temperature
20°C (68°F)
Chance of Rain
53%
Precipitation
71 mm (2.8 in)
Rainy days
16 days
Humidity
69% *
Sunshine
200 hours *
Percentage Sunshine
42% *
* Data from: Paris, France (34 KM, 21 Miles).
Guyancourt Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Guyancourt - and find the best time to visit.
Best Places in France in May
Find out more about the weather in France and which places have the best travel conditions in this month. See all of France in May →
perfect weather
pleasant
tolerable
unpleasant
poor
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).
What to Wear in Guyancourt in May
For Guyancourt in May, you'll want flexible clothing. It's wise to pack cotton shirts, comfortable shorts, and a pair of jeans for cooler evenings. A light sweater or jacket is useful for air-conditioned spaces (like buses) or unexpected cool moments. Rain is likely on several days, so bring a good rain jacket. Don't forget sun protection, sunglasses, sunscreen, and a hat. These are all good ideas with this much sunshine.
What To Do in Guyancourt in May
We rated the following activities from 1 (least suitable) to 10 (best) to do.
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Swimming6/10 -
Cycling9/10 -
Walking9/10 -
Camping4/10 -
Outdoor sports9/10
Guyancourt 3-Day Forecast
More climate data for Guyancourt
Temperature Rainfall Sunshine Humidity
See the full Guyancourt climate overview or explore weather in France.
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Where to go in May - average daytime high across popular destinations.
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