Average Weather in Grasse France
In Grasse, the summers are short, warm, dry, and mostly clear and the winters are long, very cold, and partly cloudy. Over the course of the year, the temperature typically varies from 34°F to 79°F and is rarely below 27°F or above 83°F.
Based on the beach/pool score, the best time of year to visit Grasse for hot-weather activities is from early July to mid August.
The warm season lasts for 2.8 months, from June 18 to September 12, with an average daily high temperature above 73°F. The hottest day of the year is August 6, with an average high of 79°F and low of 63°F.
The cool season lasts for 4.0 months, from November 20 to March 19, with an average daily high temperature below 55°F. The coldest day of the year is January 12, with an average low of 34°F and high of 49°F.
Average High and Low Temperature
The figure below shows you a compact characterization of the entire year of hourly average temperatures. The horizontal axis is the day of the year, the vertical axis is the hour of the day, and the color is the average temperature for that hour and day.
Average Hourly Temperature
In Grasse, the average percentage of the sky covered by clouds experiences significant seasonal variation over the course of the year.
The clearer part of the year in Grasse begins around June 16 and lasts for 2.9 months, ending around September 14. On July 21, the clearest day of the year, the sky is clear, mostly clear, or partly cloudy 81% of the time, and overcast or mostly cloudy 19% of the time.
The cloudier part of the year begins around September 14 and lasts for 9.1 months, ending around June 16. On October 21, the cloudiest day of the year, the sky is overcast or mostly cloudy 49% of the time, and clear, mostly clear, or partly cloudy 51% of the time.
Cloud Cover Categories
A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. The chance of wet days in Grasse varies throughout the year.
The wetter season lasts 8.9 months, from September 9 to June 6, with a greater than 16% chance of a given day being a wet day. The chance of a wet day peaks at 24% on November 18.
The drier season lasts 3.1 months, from June 6 to September 9. The smallest chance of a wet day is 7% on July 12.
Among wet days, we distinguish between those that experience rain alone, snow alone, or a mixture of the two. Based on this categorization, the most common form of precipitation throughout the year is rain alone, with a peak probability of 24% on November 18.
Daily Chance of Precipitation
To show variation within the months and not just the monthly totals, we show the rainfall accumulated over a sliding 31-day period centered around each day of the year. Grasse experiences significant seasonal variation in monthly rainfall.
The rainy period of the year lasts for 12 months, from July 26 to July 11, with a sliding 31-day rainfall of at least 0.5 inches. The most rain falls during the 31 days centered around November 4, with an average total accumulation of 3.4 inches.
The rainless period of the year lasts for 2.1 weeks, from July 11 to July 26. The least rain falls around July 20, with an average total accumulation of 0.5 inches.
Average Monthly Rainfall
The sliding 31-day liquid-equivalent quantity of snowfall in Grasse does not vary significantly over the course of the year, staying within 0.1 inches of 0.1 inches throughout.
Average Liquid-Equivalent Monthly Snowfall
The length of the day in Grasse varies significantly over the course of the year. In 2018, the shortest day is December 21, with 8 hours, 56 minutes of daylight; the longest day is June 21, with 15 hours, 27 minutes of daylight.
Hours of Daylight and Twilight
The earliest sunrise is at 5:50 AM on June 15, and the latest sunrise is 2 hours, 16 minutes later at 8:05 AM on January 4. The earliest sunset is at 4:55 PM on December 9, and the latest sunset is 4 hours, 23 minutes later at 9:18 PM on June 27.
Daylight saving time (DST) is observed in Grasse during 2018, starting in the spring on March 25, lasting 7.1 months, and ending in the fall on October 28.
Sunrise & Sunset with Twilight and Daylight Saving Time
Grasse experiences some seasonal variation in the perceived humidity.
The muggier period of the year lasts for 2.5 months, from June 25 to September 11, during which time the comfort level is muggy, oppressive, or miserable at least 4% of the time. The muggiest day of the year is August 6, with muggy conditions 17% of the time.
The least muggy day of the year is March 12, when muggy conditions are essentially unheard of.
Humidity Comfort Levels
The average hourly wind speed in Grasse experiences mild seasonal variation over the course of the year.
The windier part of the year lasts for 7.0 months, from October 7 to May 7, with average wind speeds of more than 7.3 miles per hour. The windiest day of the year is March 13, with an average hourly wind speed of 8.3 miles per hour.
The calmer time of year lasts for 5.0 months, from May 7 to October 7. The calmest day of the year is August 9, with an average hourly wind speed of 6.3 miles per hour.
Average Wind Speed
The predominant average hourly wind direction in Grasse varies throughout the year.
The wind is most often from the west for 2.4 weeks, from May 27 to June 13, with a peak percentage of 31% on June 11. The wind is most often from the south for 2.7 months, from June 13 to September 4, with a peak percentage of 36% on August 1. The wind is most often from the east for 8.7 months, from September 4 to May 27, with a peak percentage of 39% on January 1.
Grasse is located near a large body of water (e.g., ocean, sea, or large lake). This section reports on the wide-area average surface temperature of that water.
The average water temperature experiences some seasonal variation over the course of the year.
The time of year with warmer water lasts for 2.5 months, from July 2 to September 17, with an average temperature above 72°F. The day of the year with the warmest water is August 9, with an average temperature of 75°F.
The time of year with cooler water lasts for 4.6 months, from December 10 to April 30, with an average temperature below 60°F. The day of the year with the coolest water is February 17, with an average temperature of 56°F.
Average Water Temperature
Best Time of Year to Visit
To characterize how pleasant the weather is in Grasse throughout the year, we compute two travel scores.
The tourism score favors clear, rainless days with perceived temperatures between 65°F and 80°F. Based on this score, the best time of year to visit Grasse for general outdoor tourist activities is from mid June to mid September, with a peak score in the second week of July.
The beach/pool score favors clear, rainless days with perceived temperatures between 75°F and 90°F. Based on this score, the best time of year to visit Grasse for hot-weather activities is from early July to mid August, with a peak score in the first week of August.
For each hour between 8:00 AM and 9:00 PM of each day in the analysis period (1980 to 2016), independent scores are computed for perceived temperature, cloud cover, and total precipitation. Those scores are combined into a single hourly composite score, which is then aggregated into days, averaged over all the years in the analysis period, and smoothed.
Our cloud cover score is 10 for fully clear skies, falling linearly to 9 for mostly clear skies, and to 1 for fully overcast skies.
Our precipitation score, which is based on the three-hour precipitation centered on the hour in question, is 10 for no precipitation, falling linearly to 9 for trace precipitation, and to 0 for 0.04 inches of precipitation or more.
Our tourism temperature score is 0 for perceived temperatures below 50°F, rising linearly to 9 for 65°F, to 10 for 75°F, falling linearly to 9 for 80°F, and to 1 for 90°F or hotter.
Our beach/pool temperature score is 0 for perceived temperatures below 65°F, rising linearly to 9 for 75°F, to 10 for 82°F, falling linearly to 9 for 90°F, and to 1 for 100°F or hotter.
The growing season in Grasse typically lasts for 9.0 months (274 days), from around March 7 to around December 6, rarely starting before February 3 or after March 30, and rarely ending before November 13 or after December 29.
Time Spent in Various Temperature Bands and the Growing Season
Based on growing degree days alone, the first spring blooms in Grasse should appear around April 8, only rarely appearing before March 24 or after April 25.
Growing Degree Days
The average daily incident shortwave solar energy experiences extreme seasonal variation over the course of the year.
The brighter period of the year lasts for 3.2 months, from May 11 to August 17, with an average daily incident shortwave energy per square meter above 6.4 kWh. The brightest day of the year is July 5, with an average of 7.6 kWh.
The darker period of the year lasts for 3.5 months, from October 26 to February 12, with an average daily incident shortwave energy per square meter below 2.9 kWh. The darkest day of the year is December 16, with an average of 1.7 kWh.
Average Daily Incident Shortwave Solar Energy
For the purposes of this report, the geographical coordinates of Grasse are 43.667 deg latitude, 6.917 deg longitude, and 1,476 ft elevation.
The topography within 2 miles of Grasse contains extreme variations in elevation, with a maximum elevation change of 3,402 feet and an average elevation above sea level of 1,692 feet. Within 10 miles also contains extreme variations in elevation (5,407 feet). Within 50 miles also contains extreme variations in elevation (10,768 feet).
The area within 2 miles of Grasse is covered by artificial surfaces (31%), trees (29%), grassland (20%), and cropland (16%), within 10 miles by trees (49%) and artificial surfaces (20%), and within 50 miles by trees (35%) and water (34%).
This report illustrates the typical weather in Grasse, based on a statistical analysis of historical hourly weather reports and model reconstructions from January 1, 1980 to December 31, 2016.
Temperature and Dew Point
There are 3 weather stations near enough to contribute to our estimation of the temperature and dew point in Grasse.
For each station, the records are corrected for the elevation difference between that station and Grasse according to the International Standard Atmosphere , and by the relative change present in the MERRA-2 satellite-era reanalysis between the two locations.
The estimated value at Grasse is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Grasse and a given station.
The stations contributing to this reconstruction are: Cannes-Mandelieu (44%, 14 kilometers, south); Nice Côte d'Azur International Airport (39%, 24 kilometers, east); and Château-Arnoux-Saint-Auban Airport (18%, 86 kilometers, northwest).
Time zones for aiports and weather stations are provided by AskGeo.com .