Climate and Average Weather Year Round in Tresviso Spain

In Tresviso, the summers are short, comfortable, and dry; the winters are long, very cold, and windy; and it is partly cloudy year round. Over the course of the year, the temperature typically varies from 33°F to 67°F and is rarely below 26°F or above 73°F.

Based on the tourism score, the best time of year to visit Tresviso for warm-weather activities is from early July to late August.

The warm season lasts for 2.9 months, from June 23 to September 19, with an average daily high temperature above 62°F. The hottest month of the year in Tresviso is August, with an average high of 66°F and low of 52°F.

The cool season lasts for 3.9 months, from November 19 to March 17, with an average daily high temperature below 48°F. The coldest month of the year in Tresviso is January, with an average low of 33°F and high of 44°F.

In Tresviso, 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 Tresviso begins around June 11 and lasts for 3.2 months, ending around September 18.

The clearest month of the year in Tresviso is July, during which on average the sky is clear, mostly clear, or partly cloudy 73% of the time.

The cloudier part of the year begins around September 18 and lasts for 8.8 months, ending around June 11.

The cloudiest month of the year in Tresviso is November, during which on average the sky is overcast or mostly cloudy 63% of the time.

A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. The chance of wet days in Tresviso varies throughout the year.

The wetter season lasts 7.9 months, from September 26 to May 21, with a greater than 24% chance of a given day being a wet day. The month with the most wet days in Tresviso is November, with an average of 10.8 days with at least 0.04 inches of precipitation.

The drier season lasts 4.1 months, from May 21 to September 26. The month with the fewest wet days in Tresviso is July, with an average of 3.4 days with at least 0.04 inches of precipitation.

Among wet days, we distinguish between those that experience rain alone, snow alone, or a mixture of the two. The month with the most days of rain alone in Tresviso is November, with an average of 10.2 days. Based on this categorization, the most common form of precipitation throughout the year is rain alone, with a peak probability of 36% on November 17.

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. Tresviso experiences significant seasonal variation in monthly rainfall.

Rain falls throughout the year in Tresviso. The month with the most rain in Tresviso is November, with an average rainfall of 2.8 inches.

The month with the least rain in Tresviso is July, with an average rainfall of 0.7 inches.

Snowfall

As with rainfall, we consider the snowfall accumulated over a sliding 31-day period centered around each day of the year. Tresviso experiences some seasonal variation in monthly snowfall.

The snowy period of the year lasts for 4.0 months, from November 23 to March 22, with a sliding 31-day snowfall of at least 1.0 inches. The month with the most snow in Tresviso is February, with an average snowfall of 2.9 inches.

The snowless period of the year lasts for 8.0 months, from March 22 to November 23. The least snow falls around August 13, with an average total accumulation of 0.0 inches.

The length of the day in Tresviso varies significantly over the course of the year. In 2025, the shortest day is December 21, with 8 hours, 58 minutes of daylight; the longest day is June 21, with 15 hours, 24 minutes of daylight.

The earliest sunrise is at 6:37 AM on June 14, and the latest sunrise is 2 hours, 13 minutes later at 8:50 AM on January 2. The earliest sunset is at 5:42 PM on December 9, and the latest sunset is 4 hours, 20 minutes later at 10:02 PM on June 26.

Daylight saving time (DST) is observed in Tresviso during 2025, starting in the spring on March 30, lasting 6.9 months, and ending in the fall on October 26.

The figure below presents a compact representation of key lunar data for 2025. 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.

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 in Tresviso, 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, remaining a virtually constant 0% throughout.

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 Tresviso experiences significant seasonal variation over the course of the year.

The windier part of the year lasts for 6.6 months, from October 7 to April 27, with average wind speeds of more than 9.1 miles per hour. The windiest month of the year in Tresviso is December, with an average hourly wind speed of 11.1 miles per hour.

The calmer time of year lasts for 5.4 months, from April 27 to October 7. The calmest month of the year in Tresviso is August, with an average hourly wind speed of 7.1 miles per hour.

The predominant average hourly wind direction in Tresviso varies throughout the year.

The wind is most often from the north for 4.7 months, from April 25 to September 15, with a peak percentage of 44% on August 5. The wind is most often from the west for 1.7 weeks, from September 18 to September 30 and for 5.4 months, from November 13 to April 25, with a peak percentage of 28% on September 29. The wind is most often from the south for 1.4 months, from September 30 to November 13, with a peak percentage of 38% on October 29.

Tresviso 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 9 to September 26, with an average temperature above 67°F. The month of the year in Tresviso with the warmest water is August, with an average temperature of 70°F.

The time of year with cooler water lasts for 4.9 months, from December 11 to May 8, with an average temperature below 57°F. The month of the year in Tresviso with the coolest water is February, with an average temperature of 55°F.

To characterize how pleasant the weather is in Tresviso 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 Tresviso for general outdoor tourist activities is from early July to late August, with a peak score in the first week of August.

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 Tresviso for hot-weather activities is from late July to mid August, with a peak score in the last week of July.

Methodology

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 in Tresviso typically lasts for 6.9 months (212 days), from around April 17 to around November 15, rarely starting before March 27 or after May 11, and rarely ending before October 22 or after December 23.

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 in Tresviso should appear around May 25, only rarely appearing before May 11 or after June 9.

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 3.1 months, from May 15 to August 19, with an average daily incident shortwave energy per square meter above 6.2 kWh. The brightest month of the year in Tresviso is July, with an average of 7.3 kWh.

The darker period of the year lasts for 3.6 months, from October 27 to February 15, with an average daily incident shortwave energy per square meter below 2.7 kWh. The darkest month of the year in Tresviso is December, with an average of 1.5 kWh.

For the purposes of this report, the geographical coordinates of Tresviso are 43.258 deg latitude, -4.668 deg longitude, and 2,887 ft elevation.

The topography within 2 miles of Tresviso contains extreme variations in elevation, with a maximum elevation change of 4,852 feet and an average elevation above sea level of 2,672 feet. Within 10 miles also contains extreme variations in elevation (8,543 feet). Within 50 miles also contains extreme variations in elevation (8,875 feet).

The area within 2 miles of Tresviso is covered by shrubs (39%), trees (35%), and grassland (19%), within 10 miles by trees (35%) and shrubs (30%), and within 50 miles by water (34%) and trees (29%).