Climate and Average Weather Year Round at Bordeaux–Mérignac Airport France
At Bordeaux–Mérignac Airport, the summers are warm, the winters are cold, and it is partly cloudy year round. Over the course of the year, the temperature typically varies from 37°F to 81°F and is rarely below 27°F or above 91°F.
Based on the tourism score, the best time of year to visit Bordeaux–Mérignac Airport for warm-weather activities is from mid June to mid September.
Climate at Bordeaux–Mérignac Airport
Average Temperature at Bordeaux–Mérignac Airport
The warm season lasts for 3.2 months, from June 12 to September 18, with an average daily high temperature above 75°F. The hottest day of the year is August 4, with an average high of 81°F and low of 61°F.
The cool season lasts for 3.6 months, from November 18 to March 4, with an average daily high temperature below 56°F. The coldest day of the year is February 7, with an average low of 37°F and high of 52°F.
Average High and Low Temperature at Bordeaux–Mérignac Airport
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 at Bordeaux–Mérignac Airport
frigid 15°F freezing 32°F very cold 45°F cold 55°F cool 65°F comfortable 75°F warm 85°F hot 95°F sweltering
Rawson, Argentina (7,269 miles away); Tandil, Argentina (6,750 miles); and Castlemaine, Australia (10,558 miles) are the far-away foreign places with temperatures most similar to Bordeaux–Mérignac Airport (view comparison).
At Bordeaux–Mérignac Airport, 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 at Bordeaux–Mérignac Airport begins around June 7 and lasts for 3.7 months, ending around September 27. On July 24, the clearest day of the year, the sky is clear, mostly clear, or partly cloudy 74% of the time, and overcast or mostly cloudy 26% of the time.
The cloudier part of the year begins around September 27 and lasts for 8.3 months, ending around June 7. On January 5, the cloudiest day of the year, the sky is overcast or mostly cloudy 63% of the time, and clear, mostly clear, or partly cloudy 37% of the time.
Cloud Cover Categories at Bordeaux–Mérignac Airport
0% clear 20% mostly clear 40% partly cloudy 60% mostly cloudy 80% overcast 100%
A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. The chance of wet days at Bordeaux–Mérignac Airport varies throughout the year.
The wetter season lasts 8.7 months, from September 19 to June 11, with a greater than 25% chance of a given day being a wet day. The chance of a wet day peaks at 34% on November 18.
The drier season lasts 3.3 months, from June 11 to September 19. The smallest chance of a wet day is 16% on August 2.
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 34% on November 18.
Daily Chance of Precipitation at Bordeaux–Mérignac Airport
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. Bordeaux–Mérignac Airport experiences some seasonal variation in monthly rainfall.
Rain falls throughout the year at Bordeaux–Mérignac Airport. The most rain falls during the 31 days centered around November 10, with an average total accumulation of 2.8 inches.
The least rain falls around July 21, with an average total accumulation of 1.2 inches.
Average Monthly Rainfall at Bordeaux–Mérignac Airport
The length of the day at Bordeaux–Mérignac Airport varies significantly over the course of the year. In 2021, the shortest day is December 21, with 8 hours, 47 minutes of daylight; the longest day is June 21, with 15 hours, 36 minutes of daylight.
Hours of Daylight and Twilight at Bordeaux–Mérignac Airport
The earliest sunrise is at 6:16 AM on June 15, and the latest sunrise is 2 hours, 24 minutes later at 8:40 AM on January 2. The earliest sunset is at 5:21 PM on December 9, and the latest sunset is 4 hours, 31 minutes later at 9:53 PM on June 26.
Daylight saving time (DST) is observed at Bordeaux–Mérignac Airport during 2021, starting in the spring on March 28, lasting 7.1 months, and ending in the fall on October 31.
Sunrise & Sunset with Twilight and Daylight Saving Time at Bordeaux–Mérignac Airport
The figure below presents a compact representation of key lunar data for 2021. The horizontal axis is the day, the vertical axis is the hour of the day, and the colored areas indicate when the moon is above the horizon. The vertical gray bars (new Moons) and blue bars (full Moons) indicate key Moon phases.
Moon Rise, Set & Phases at Bordeaux–Mérignac Airport
We base the humidity comfort level on the dew point, as it determines whether perspiration will evaporate from the skin, thereby cooling the body. Lower dew points feel drier and higher dew points feel more humid. Unlike temperature, which typically varies significantly between night and day, dew point tends to change more slowly, so while the temperature may drop at night, a muggy day is typically followed by a muggy night.
Bordeaux–Mérignac Airport experiences some seasonal variation in the perceived humidity.
The muggier period of the year lasts for 3.0 months, from June 16 to September 18, during which time the comfort level is muggy, oppressive, or miserable at least 3% of the time. The muggiest day of the year is August 14, with muggy conditions 13% of the time.
The least muggy day of the year is December 7, when muggy conditions are essentially unheard of.
Humidity Comfort Levels at Bordeaux–Mérignac Airport
dry 55°F comfortable 60°F humid 65°F muggy 70°F oppressive 75°F miserable
This section discusses the wide-area hourly average wind vector (speed and direction) at 10 meters above the ground. The wind experienced at any given location is highly dependent on local topography and other factors, and instantaneous wind speed and direction vary more widely than hourly averages.
The average hourly wind speed at Bordeaux–Mérignac Airport experiences mild seasonal variation over the course of the year.
The windier part of the year lasts for 6.9 months, from October 9 to May 6, with average wind speeds of more than 6.9 miles per hour. The windiest day of the year is February 18, with an average hourly wind speed of 7.9 miles per hour.
The calmer time of year lasts for 5.1 months, from May 6 to October 9. The calmest day of the year is August 9, with an average hourly wind speed of 5.9 miles per hour.
Average Wind Speed at Bordeaux–Mérignac Airport
The predominant average hourly wind direction at Bordeaux–Mérignac Airport varies throughout the year.
The wind is most often from the west for 1.0 months, from January 23 to February 23; for 1.4 months, from March 4 to April 17; and for 5.8 months, from April 23 to October 17, with a peak percentage of 45% on July 11. The wind is most often from the north for 1.3 weeks, from February 23 to March 4 and for 6.0 days, from April 17 to April 23, with a peak percentage of 32% on April 20. The wind is most often from the south for 3.2 months, from October 17 to January 23, with a peak percentage of 33% on January 1.
Wind Direction at Bordeaux–Mérignac Airport
Bordeaux–Mérignac Airport 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 3.0 months, from June 29 to September 27, with an average temperature above 66°F. The day of the year with the warmest water is August 9, with an average temperature of 70°F.
The time of year with cooler water lasts for 4.1 months, from December 17 to April 21, with an average temperature below 55°F. The day of the year with the coolest water is February 21, with an average temperature of 52°F.
Average Water Temperature at Bordeaux–Mérignac Airport
Best Time of Year to Visit
To characterize how pleasant the weather is at Bordeaux–Mérignac Airport 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 Bordeaux–Mérignac Airport for general outdoor tourist activities is from mid June to mid September, with a peak score in the third week of July.
Tourism Score at Bordeaux–Mérignac Airport
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 Bordeaux–Mérignac Airport for hot-weather activities is from mid July to late August, with a peak score in the first week of August.
Beach/Pool Score at Bordeaux–Mérignac Airport
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.
Definitions of the growing season vary throughout the world, but for the purposes of this report, we define it as the longest continuous period of non-freezing temperatures (≥ 32°F) in the year (the calendar year in the Northern Hemisphere, or from July 1 until June 30 in the Southern Hemisphere).
The growing season at Bordeaux–Mérignac Airport typically lasts for 8.6 months (263 days), from around March 6 to around November 25, rarely starting before February 3 or after April 4, and rarely ending before October 31 or after December 27.
Time Spent in Various Temperature Bands and the Growing Season at Bordeaux–Mérignac Airport
frigid 15°F freezing 32°F very cold 45°F cold 55°F cool 65°F comfortable 75°F warm 85°F hot 95°F sweltering
Growing degree days are a measure of yearly heat accumulation used to predict plant and animal development, and defined as the integral of warmth above a base temperature, discarding any excess above a maximum temperature. In this report, we use a base of 50°F and a cap of 86°F.
Based on growing degree days alone, the first spring blooms at Bordeaux–Mérignac Airport should appear around March 11, only rarely appearing before February 20 or after April 1.
Growing Degree Days at Bordeaux–Mérignac Airport
This section discusses the total daily incident shortwave solar energy reaching the surface of the ground over a wide area, taking full account of seasonal variations in the length of the day, the elevation of the Sun above the horizon, and absorption by clouds and other atmospheric constituents. Shortwave radiation includes visible light and ultraviolet radiation.
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 3.3 months, from May 10 to August 21, with an average daily incident shortwave energy per square meter above 6.0 kWh. The brightest day of the year is July 4, with an average of 7.2 kWh.
The darker period of the year lasts for 3.6 months, from October 28 to February 16, with an average daily incident shortwave energy per square meter below 2.5 kWh. The darkest day of the year is December 26, with an average of 1.3 kWh.
Average Daily Incident Shortwave Solar Energy at Bordeaux–Mérignac Airport
For the purposes of this report, the geographical coordinates of Bordeaux–Mérignac Airport are 44.828 deg latitude, -0.716 deg longitude, and 151 ft elevation.
The topography within 2 miles of Bordeaux–Mérignac Airport contains only modest variations in elevation, with a maximum elevation change of 128 feet and an average elevation above sea level of 158 feet. Within 10 miles also contains only modest variations in elevation (292 feet). Within 50 miles contains only modest variations in elevation (689 feet).
The area within 2 miles of Bordeaux–Mérignac Airport is covered by artificial surfaces (53%), trees (27%), and cropland (12%), within 10 miles by trees (48%) and artificial surfaces (34%), and within 50 miles by trees (40%) and cropland (27%).
This report illustrates the typical weather at Bordeaux–Mérignac Airport, 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
Bordeaux–Mérignac Airport has a weather station that reported reliably enough during the analysis period that we have included it in our network. When available, historical temperature and dew point measurements are taken directly from this weather station. These records are obtained from NOAA's Integrated Surface Hourly data set, falling back on ICAO METAR records as required.
In the case of missing or erroneous measurements from this station, we fall back on records from nearby stations, adjusted according to typical seasonal and diurnal intra-station differences. For a given day of the year and hour of the day, the fallback station is selected to minimize the prediction error over the years for which there are measurements for both stations.
The stations on which we may fall back include but are not limited to Cazaux, Biscarosse / Parentis, Biscarrosse - Parentis Airport, Cognac-Châteaubernard Air Base, Mont-de-Marsan, Dax-Seyresse, Bergerac-Roumanière, and Angoulême – Cognac International Airport.
All data relating to the Sun's position (e.g., sunrise and sunset) are computed using astronomical formulas from the book, Astronomical Algorithms 2nd Edition , by Jean Meeus.
All other weather data, including cloud cover, precipitation, wind speed and direction, and solar flux, come from NASA's MERRA-2 Modern-Era Retrospective Analysis . This reanalysis combines a variety of wide-area measurements in a state-of-the-art global meteorological model to reconstruct the hourly history of weather throughout the world on a 50-kilometer grid.
Land Use data comes from the Global Land Cover SHARE database , published by the Food and Agriculture Organization of the United Nations.
Elevation data comes from the Shuttle Radar Topography Mission (SRTM) , published by NASA's Jet Propulsion Laboratory.
Names, locations, and time zones of places and some airports come from the GeoNames Geographical Database .
Time zones for airports and weather stations are provided by AskGeo.com .
Maps are © Esri, with data from National Geographic, Esri, DeLorme, NAVTEQ, UNEP-WCMC, USGS, NASA, ESA, METI, NRCAN, GEBCO, NOAA, and iPC.
The information on this site is provided as is, without any assurances as to its accuracy or suitability for any purpose. Weather data is prone to errors, outages, and other defects. We assume no responsibility for any decisions made on the basis of the content presented on this site.
We draw particular cautious attention to our reliance on the MERRA-2 model-based reconstructions for a number of important data series. While having the tremendous advantages of temporal and spatial completeness, these reconstructions: (1) are based on computer models that may have model-based errors, (2) are coarsely sampled on a 50 km grid and are therefore unable to reconstruct the local variations of many microclimates, and (3) have particular difficulty with the weather in some coastal areas, especially small islands.
We further caution that our travel scores are only as good as the data that underpin them, that weather conditions at any given location and time are unpredictable and variable, and that the definition of the scores reflects a particular set of preferences that may not agree with those of any particular reader.