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Average Weather at Le Havre – Octeville Airport France

At Le Havre – Octeville Airport, the summers are comfortable; the winters are long, chilly, and windy; and it is partly cloudy year round. Over the course of the year, the temperature typically varies from 38°F to 70°F and is rarely below 27°F or above 80°F.

The warm season lasts for 3.2 months, from June 15 to September 22, with an average daily high temperature above 65°F. The hottest day of the year is August 3, with an average high of 70°F and low of 60°F.

The cool season lasts for 3.8 months, from November 23 to March 17, with an average daily high temperature below 51°F. The coldest day of the year is February 8, with an average low of 38°F and high of 46°F.

Average High and Low Temperature

The daily average high (red line) and low (blue line) temperature, with 25th to 75th and 10th to 90th percentile bands. The thin dotted lines are the corresponding average perceived temperatures.

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

Average Hourly Temperature at Le Havre – Octeville AirportJanFebMarAprMayJunJulAugSepOctNovDec12 AM4 AM8 AM12 PM4 PM8 PM12 AMcoldcoolchillycomfortable
The average hourly temperature, color coded into bands: frigid < 15°F < freezing < 32°F < chilly < 45°F < cold < 55°F < cool < 65°F < comfortable < 75°F < warm < 85°F < hot < 95°F < sweltering. The shaded overlays indicate night and civil twilight.

Clouds

At Le Havre – Octeville 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 Le Havre – Octeville Airport begins around May 8 and lasts for 5.0 months, ending around October 9. On July 17, the clearest day of the year, the sky is clear, mostly clear, or partly cloudy 60% of the time, and overcast or mostly cloudy 40% of the time.

The cloudier part of the year begins around October 9 and lasts for 7.0 months, ending around May 8. On December 30, the cloudiest day of the year, the sky is overcast or mostly cloudy 66% of the time, and clear, mostly clear, or partly cloudy 34% of the time.

Cloud Cover Categories

Cloud Cover Categories at Le Havre – Octeville AirportclearercloudiercloudierJanFebMarAprMayJunJulAugSepOctNovDec0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%Jul 1760%Jul 1760%Dec 3034%Dec 3034%May 846%May 846%Oct 947%Oct 947%clearovercastmostly clearpartly cloudymostly cloudy
The percentage of time spent in each cloud cover band, categorized by the percentage of the sky covered by clouds: clear < 20% < mostly clear < 40% < partly cloudy < 60% < mostly cloudy < 80% < overcast.

Precipitation

A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. The chance of wet days at Le Havre – Octeville Airport varies throughout the year.

The wetter season lasts 4.8 months, from September 27 to February 20, with a greater than 30% chance of a given day being a wet day. The chance of a wet day peaks at 39% on December 30.

The drier season lasts 7.2 months, from February 20 to September 27. The smallest chance of a wet day is 20% on July 24.

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 38% on December 22.

Daily Chance of Precipitation

Daily Chance of Precipitation at Le Havre – Octeville AirportwetwetdryJanFebMarAprMayJunJulAugSepOctNovDec0%10%20%30%40%50%60%70%80%90%100%Dec 3039%Dec 3039%Jul 2420%Jul 2420%Sep 2730%Sep 2730%Feb 2030%Feb 2030%rain
The percentage of days in which various types of precipitation are observed, excluding trace quantities: rain alone, snow alone, and mixed (both rain and snow fell in the same day).

Rainfall

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. Le Havre – Octeville Airport experiences some seasonal variation in monthly rainfall.

Rain falls throughout the year at Le Havre – Octeville Airport. The most rain falls during the 31 days centered around December 16, with an average total accumulation of 2.7 inches.

The least rain falls around August 13, with an average total accumulation of 1.4 inches.

Average Monthly Rainfall

The average rainfall (solid line) accumulated over the course of a sliding 31-day period centered on the day in question, with 25th to 75th and 10th to 90th percentile bands. The thin dotted line is the corresponding average liquid-equivalent snowfall.

Sun

The length of the day at Le Havre – Octeville Airport varies extremely over the course of the year. In 2017, the shortest day is December 21, with 8 hours, 9 minutes of daylight; the longest day is June 21, with 16 hours, 18 minutes of daylight.

Hours of Daylight and Twilight

Hours of Daylight and Twilight at Le Havre – Octeville AirportJanFebMarAprMayJunJulAugSepOctNovDec0 hr24 hr4 hr20 hr8 hr16 hr12 hr12 hr16 hr8 hr20 hr4 hr24 hr0 hr12 hr, 7 minMar 2012 hr, 7 minMar 2016 hr, 18 minJun 2116 hr, 18 minJun 2112 hr, 11 minSep 2212 hr, 11 minSep 228 hr, 9 minDec 218 hr, 9 minDec 21nightnightday
The number of hours during which the Sun is visible (black line). From bottom (most yellow) to top (most gray), the color bands indicate: full daylight, twilight (civil, nautical, and astronomical), and full night.

The earliest sunrise is at 5:52 AM on June 16, and the latest sunrise is 3 hours, 4 minutes later at 8:56 AM on December 31. The earliest sunset is at 4:59 PM on December 12, and the latest sunset is 5 hours, 11 minutes later at 10:10 PM on June 25.

Daylight saving time (DST) is observed at Le Havre – Octeville Airport during 2017, starting in the spring on March 26, lasting 7.1 months, and ending in the fall on October 29.

Sunrise & Sunset with Twilight and Daylight Saving Time

Sunrise & Sunset with Twilight and Daylight Saving Time at Le Havre – Octeville AirportJanFebMarAprMayJunJulAugSepOctNovDec2 AM4 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PM12 AM2 AMJun 165:52 AMJun 165:52 AM10:10 PMJun 2510:10 PMJun 25Dec 124:59 PMDec 124:59 PM8:56 AMDec 318:56 AMDec 31Mar 26DSTMar 26DSTDSTOct 29DSTOct 29daynightnightnightnight
The solar day over the course of the year 2017. From bottom to top, the black lines are the previous solar midnight, sunrise, solar noon, sunset, and the next solar midnight. The day, twilights (civil, nautical, and astronomical), and night are indicated by the color bands from yellow to gray. The transitions to and from daylight saving time are indicated by the 'DST' labels.

Humidity

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.

The perceived humidity level at Le Havre – Octeville Airport, as measured by the percentage of time in which the humidity comfort level is muggy, oppressive, or miserable, does not vary significantly over the course of the year, staying within 2% of 2% throughout.

Humidity Comfort Levels

Humidity Comfort Levels at Le Havre – Octeville AirportJanFebMarAprMayJunJulAugSepOctNovDec0%10%20%30%40%50%60%70%80%90%100%Nov 300%Nov 300%Aug 44%Aug 44%drydryhumidhumidcomfortablecomfortable
The percentage of time spent at various humidity comfort levels, categorized by dew point: dry < 55°F < comfortable < 60°F < humid < 65°F < muggy < 70°F < oppressive < 75°F < miserable.

Wind

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 Le Havre – Octeville Airport experiences significant seasonal variation over the course of the year.

The windier part of the year lasts for 5.7 months, from October 7 to March 30, with average wind speeds of more than 7.2 miles per hour. The windiest day of the year is January 1, with an average hourly wind speed of 8.8 miles per hour.

The calmer time of year lasts for 6.3 months, from March 30 to October 7. The calmest day of the year is August 5, with an average hourly wind speed of 5.5 miles per hour.

Average Wind Speed

Average Wind Speed at Le Havre – Octeville AirportwindywindyJanFebMarAprMayJunJulAugSepOctNovDec0 mph2 mph4 mph6 mph8 mph10 mph12 mph14 mphJan 18.8 mphJan 18.8 mphAug 55.5 mphAug 55.5 mphOct 77.2 mphOct 77.2 mphMar 307.2 mphMar 307.2 mph
The average of mean hourly wind speeds (dark gray line), with 25th to 75th and 10th to 90th percentile bands.

The predominant average hourly wind direction at Le Havre – Octeville Airport varies throughout the year.

The wind is most often from the west for 8.3 months, from January 28 to October 7, with a peak percentage of 50% on July 19. The wind is most often from the south for 3.7 months, from October 7 to January 28, with a peak percentage of 38% on January 1.

Wind Direction

Wind Direction at Le Havre – Octeville AirportSWSJanFebMarAprMayJunJulAugSepOctNovDec0%100%20%80%40%60%60%40%80%20%100%0%eastwestnorthsouth
The percentage of hours in which the mean wind direction is from each of the four cardinal wind directions (north, east, south, and west), excluding hours in which the mean wind speed is less than 1 mph. The lightly tinted areas at the boundaries are the percentage of hours spent in the implied intermediate directions (northeast, southeast, southwest, and northwest).

Water Temperature

Le Havre – Octeville 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 3.2 months, from July 6 to October 12, with an average temperature above 61°F. The day of the year with the warmest water is August 21, with an average temperature of 65°F.

The time of year with cooler water lasts for 3.8 months, from December 26 to April 19, with an average temperature below 49°F. The day of the year with the coolest water is February 25, with an average temperature of 45°F.

Average Water Temperature

The daily average water temperature (purple line), with 25th to 75th and 10th to 90th percentile bands.

Solar Energy

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 3.4 months, from May 6 to August 18, with an average daily incident shortwave energy per square meter above 5.5 kWh. The brightest day of the year is June 26, with an average of 6.7 kWh.

The darker period of the year lasts for 3.8 months, from October 26 to February 19, with an average daily incident shortwave energy per square meter below 2.0 kWh. The darkest day of the year is December 27, with an average of 0.8 kWh.

Average Daily Incident Shortwave Solar Energy

Average Daily Incident Shortwave Solar Energy at Le Havre – Octeville AirportbrightdarkdarkJanFebMarAprMayJunJulAugSepOctNovDec0 kWh1 kWh2 kWh3 kWh4 kWh5 kWh6 kWh7 kWh8 kWh9 kWhJun 266.7 kWhJun 266.7 kWhDec 270.8 kWhDec 270.8 kWhMay 65.5 kWhMay 65.5 kWhAug 185.5 kWhAug 185.5 kWhOct 262.0 kWhOct 262.0 kWhFeb 192.0 kWhFeb 192.0 kWh
The average daily shortwave solar energy reaching the ground per square meter (orange line), with 25th to 75th and 10th to 90th percentile bands.

Topography

For the purposes of this report, the geographical coordinates of Le Havre – Octeville Airport are 49.534 deg latitude, 0.088 deg longitude, and 125 ft elevation.

The topography within 2 miles of Le Havre – Octeville Airport contains only modest variations in elevation, with a maximum elevation change of 341 feet and an average elevation above sea level of 189 feet. Within 10 miles contains only modest variations in elevation (499 feet). Within 50 miles contains significant variations in elevation (1,165 feet).

The area within 2 miles of Le Havre – Octeville Airport is covered by artificial surfaces (41%), water (27%), and cropland (25%), within 10 miles by water (63%) and cropland (18%), and within 50 miles by water (47%) and cropland (26%).

Data Sources

This report illustrates the typical weather at Le Havre – Octeville 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

Le Havre – Octeville 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 Deauville – Saint-Gatien Airport, Caen – Carpiquet Airport, Alençon Valframbert Airport, Rouen Airport, Évreux-Fauville Air Base, Brighton Shoreham Airport, Cherbourg – Maupertus Airport, and Laval-Entrammes.

Other Data

All data relating to the Sun's position (e.g., sunrise and sunset) are computed using astronomical formulas from the book, Astronomical Tables of the Sun, Moon and Planets , 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 aiports 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.