Climate and Average Weather Year Round in Izurtza Spain

In Izurtza, the summers are comfortable; the winters are long, cold, wet, and windy; and it is partly cloudy year round. Over the course of the year, the temperature typically varies from 39°F to 77°F and is rarely below 31°F or above 87°F.

Based on the tourism score, the best time of year to visit Izurtza for warm-weather activities is from late June to early September.

The warm season lasts for 3.1 months, from June 18 to September 21, with an average daily high temperature above 72°F. The hottest month of the year in Izurtza is August, with an average high of 76°F and low of 59°F.

The cool season lasts for 3.8 months, from November 18 to March 10, with an average daily high temperature below 56°F. The coldest month of the year in Izurtza is January, with an average low of 39°F and high of 51°F.

In Izurtza, 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 Izurtza begins around June 12 and lasts for 3.2 months, ending around September 18.

The clearest month of the year in Izurtza is July, during which on average the sky is clear, mostly clear, or partly cloudy 74% of the time.

The cloudier part of the year begins around September 18 and lasts for 8.8 months, ending around June 12.

The cloudiest month of the year in Izurtza is January, during which on average the sky is overcast or mostly cloudy 64% 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 Izurtza varies throughout the year.

The wetter season lasts 7.9 months, from September 19 to May 17, with a greater than 25% chance of a given day being a wet day. The month with the most wet days in Izurtza is November, with an average of 10.5 days with at least 0.04 inches of precipitation.

The drier season lasts 4.1 months, from May 17 to September 19. The month with the fewest wet days in Izurtza is July, with an average of 4.5 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 Izurtza is November, with an average of 10.5 days. Based on this categorization, the most common form of precipitation throughout the year is rain alone, with a peak probability of 38% 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. Izurtza experiences significant seasonal variation in monthly rainfall.

Rain falls throughout the year in Izurtza. The month with the most rain in Izurtza is November, with an average rainfall of 3.6 inches.

The month with the least rain in Izurtza is July, with an average rainfall of 1.0 inches.

The length of the day in Izurtza varies significantly over the course of the year. In 2024, the shortest day is December 21, with 8 hours, 59 minutes of daylight; the longest day is June 20, with 15 hours, 23 minutes of daylight.

The earliest sunrise is at 6:30 AM on June 14, and the latest sunrise is 2 hours, 12 minutes later at 8:42 AM on January 4. The earliest sunset is at 5:35 PM on December 8, and the latest sunset is 4 hours, 19 minutes later at 9:54 PM on June 26.

Daylight saving time (DST) is observed in Izurtza during 2024, starting in the spring on March 31, lasting 6.9 months, and ending in the fall on October 27.

The figure below presents a compact representation of key lunar data for 2024. 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 Izurtza, 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 4% of 4% 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 Izurtza experiences significant seasonal variation over the course of the year.

The windier part of the year lasts for 6.5 months, from October 11 to April 27, with average wind speeds of more than 8.6 miles per hour. The windiest month of the year in Izurtza is December, with an average hourly wind speed of 10.4 miles per hour.

The calmer time of year lasts for 5.5 months, from April 27 to October 11. The calmest month of the year in Izurtza is August, with an average hourly wind speed of 6.8 miles per hour.

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

The wind is most often from the west for 1.5 months, from January 12 to February 26, with a peak percentage of 36% on January 16. The wind is most often from the north for 7.2 months, from February 26 to October 2, with a peak percentage of 58% on July 23. The wind is most often from the south for 3.3 months, from October 2 to January 12, with a peak percentage of 38% on January 1.

Izurtza 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 2.7 months, from July 4 to September 24, with an average temperature above 68°F. The month of the year in Izurtza with the warmest water is August, with an average temperature of 71°F.

The time of year with cooler water lasts for 4.8 months, from December 9 to May 1, with an average temperature below 57°F. The month of the year in Izurtza with the coolest water is February, with an average temperature of 54°F.

To characterize how pleasant the weather is in Izurtza 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 Izurtza for general outdoor tourist activities is from late June to early September, with a peak score in the last 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 Izurtza for hot-weather activities is from mid July to late August, with a peak score in the first week of August.

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 Izurtza typically lasts for 9.7 months (293 days), from around February 25 to around December 15, rarely starting after March 28, or ending before November 13.

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 Izurtza should appear around March 12, only rarely appearing before February 20 or after April 1.

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 20, with an average daily incident shortwave energy per square meter above 6.0 kWh. The brightest month of the year in Izurtza is July, with an average of 7.1 kWh.

The darker period of the year lasts for 3.6 months, from October 27 to February 16, with an average daily incident shortwave energy per square meter below 2.6 kWh. The darkest month of the year in Izurtza is December, with an average of 1.5 kWh.

For the purposes of this report, the geographical coordinates of Izurtza are 43.150 deg latitude, -2.633 deg longitude, and 938 ft elevation.

The topography within 2 miles of Izurtza contains large variations in elevation, with a maximum elevation change of 2,621 feet and an average elevation above sea level of 774 feet. Within 10 miles contains large variations in elevation (4,177 feet). Within 50 miles also contains extreme variations in elevation (5,118 feet).

The area within 2 miles of Izurtza is covered by trees (43%), grassland (36%), and artificial surfaces (16%), within 10 miles by trees (74%) and grassland (19%), and within 50 miles by trees (34%) and water (31%).