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Average Weather in Santander Spain

In Santander, the temperature typically varies from 45°F to 77°F over the course of the year, and is rarely below 38°F or above 87°F.

The warm season lasts for 2.9 months, from June 28 to September 24, with an average daily high temperature above 73°F. The hottest day of the year is August 8, with an average high of 77°F and low of 63°F.

The cool season lasts for 4.7 months, from November 19 to April 9, with an average daily high temperature below 60°F. The coldest day of the year is February 8, with an average low of 45°F and high of 56°F.

Average High and Low Temperature

The daily average high (red line) and low (blue line) temperature with percentile bands, 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

12 AM4 AM8 AM12 PM4 PM8 PM12 AMJanFebMarAprMayJunJulAugSepOctNovDeccoldcoldcoolcoolcomfortablecomfortablewarmwarm
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.

Sun

The length of the day in Santander varies significantly over the course of the year. In 2017, the shortest day is December 21, with 8 hours, 57 minutes of daylight; the longest day is June 21, with 15 hours, 25 minutes of daylight.

Hours of Daylight and Twilight

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 6:33 AM on June 15, and the latest sunrise is 2 hours, 14 minutes later at 8:48 AM on January 2. The earliest sunset is at 5:38 PM on December 9, and the latest sunset is 4 hours, 21 minutes later at 10:00 PM on June 26.

Daylight saving time (DST) is observed in Santander 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

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.

Clouds

In Santander, 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 Santander begins around June 10 and lasts for 3.3 months, ending around September 20. On July 24, the clearest day of the year, the sky is clear, mostly clear, or partly cloudy 76% of the time, and overcast or mostly cloudy 24% of the time.

The cloudier part of the year begins around September 20 and lasts for 8.7 months, ending around June 10. On January 16, 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

clearerclearercloudiercloudiercloudiercloudier0%10%20%30%40%50%60%70%80%90%100%JanFebMarAprMayJunJulAugSepOctNovDecJan 1663%Jan 1663%Jul 2424%Jul 2424%Jun 1044%Jun 1044%Sep 2044%Sep 2044%overcastovercastpartly cloudypartly cloudymostly clearmostly clearclearclear
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 in Santander varies throughout the year.

The wetter season lasts 7.5 months, from September 25 to May 8, with a greater than 24% chance of a given day being a wet day. The chance of a wet day peaks at 38% on November 23.

The drier season lasts 4.6 months, from May 8 to September 25. The smallest chance of a wet day is 10% on July 6.

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 November 23.

Daily Chance of Precipitation

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 in the year. Santander experiences significant seasonal variation in monthly rainfall.

Rain falls throughout the year in Santander. The most rain falls during the 31 days centered around November 21, with an average total accumulation of 3.6 inches.

The least rain falls around July 24, with and average total accumulation of 0.6 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.

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.

Santander experiences some seasonal variation in the perceived humidity.

The muggier period of the year lasts for 3.0 months, from June 26 to September 25, during which time the comfort level is muggy, oppressive, or miserable at least 5% of the time. The muggiest day of the year is August 8, with muggy conditions 20% of the time.

The least muggy day of the year is March 3, when muggy conditions are essentially unheard of.

Humidity Comfort Levels

muggymuggy0%10%20%30%40%50%60%70%80%90%100%JanFebMarAprMayJunJulAugSepOctNovDecMar 30%Mar 30%Aug 820%Aug 820%Jun 265%Jun 265%Sep 255%Sep 255%oppressiveoppressivemuggymuggycomfortablecomfortabledrydry
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 in Santander experiences mildly seasonal variation over the course of the year.

The windier part of the year lasts for 6.6 months, from October 8 to April 25, with average wind speeds of more than 5.7 miles per hour. The windiest day of the year is December 14, with an average hourly wind speed of 7.0 miles per hour.

The calmer time of year lasts for 5.5 months, from April 25 to October 8. The calmest day of the year is August 4, with an average hourly wind speed of 4.6 miles per hour.

Average Wind Speed

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 in Santander varies throughout the year.

The wind is most often from the north for 3.1 months, from June 2 to September 4, with a peak percentage of 40% on August 5. The wind is most often from the west for 2.7 weeks, from September 22 to October 11 and for 7.0 months, from November 3 to June 2, with a peak percentage of 38% on January 13. The wind is most often from the south for 3.3 weeks, from October 11 to November 3, with a peak percentage of 34% on October 29.

Wind Direction

WWNNEEWWSSWW0%20%40%60%80%100%JanFebMarAprMayJunJulAugSepOctNovDecwestwestsouthsoutheasteastnorthnorth
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

Santander 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 2.6 months, from July 7 to September 26, with an average temperature above 67°F. The day of the year with the warmest water is August 13, with an average temperature of 70°F.

The time of year with cooler water lasts for 4.9 months, from December 10 to May 7, with an average temperature below 58°F. The day of the year with the coolest water is February 25, with an average temperature of 54°F.

Average Water Temperature

The daily average water temperature (purple line) with percentile bands, 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 very significant seasonal variation over the course of the year.

The brighter period of the year lasts for 3.3 months, from May 13 to August 21, with an average daily incident shortwave energy per square meter above 6.1 kWh. The brightest day of the year is July 5, with an average of 7.3 kWh.

The darker period of the year lasts for 3.6 months, from October 27 to February 17, with an average daily incident shortwave energy per square meter below 2.6 kWh. The darkest day of the year is December 28, with an average of 1.4 kWh.

Average Daily Incident Shortwave Solar Energy

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 Santander are 43.465 deg latitude, -3.804 deg longitude, and 0 ft elevation.

The topography within 2 miles of Santander contains only modest variations in elevation, with a maximum elevation change of 279 feet, and an average elevation above sea level of 63 feet. Within 10 miles contains very significant variations in elevation (1,880 feet). Within 50 miles contains extreme variations in elevation (7,677 feet).

The area within 2 miles of Santander is covered by artificial surfaces (45%) and water (36%), within 10 miles by water (48%) and cropland (23%), and within 50 miles by water (54%) and trees (19%).

Data Sources

This report illustrates the typical weather in Santander, 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 2 weather stations near enough to contribute to our estimation of the temperature and dew point in Santander.

For each station, the records are corrected for the elevation difference between that station and Santander 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 Santander is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Santander and a given station.

The stations contributing to this reconstruction are: Vitoria Airport (59%, 109 kilometers, southeast) and Burgos Villafria Airport (41%, 124 kilometers, south).

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 .