Average Weather in Šempeter pri Gorici Slovenia

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In Šempeter pri Gorici, the summers are warm, the winters are chilly, and it is partly cloudy year round. Over the course of the year, the temperature typically varies from 32°F to 84°F and is rarely below 23°F or above 92°F.

The warm season lasts for 3.1 months, from June 8 to September 10, with an average daily high temperature above 76°F. The hottest day of the year is August 3, with an average high of 84°F and low of 64°F.

The cold season lasts for 3.6 months, from November 20 to March 7, with an average daily high temperature below 52°F. The coldest day of the year is January 13, with an average low of 32°F and high of 44°F.

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.

In Šempeter pri Gorici, 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 Šempeter pri Gorici begins around June 13 and lasts for 3.4 months, ending around September 24. On August 1, the clearest day of the year, the sky is clear, mostly clear, or partly cloudy 71% of the time, and overcast or mostly cloudy 29% of the time.

The cloudier part of the year begins around September 24 and lasts for 8.6 months, ending around June 13. On November 20, the cloudiest day of the year, the sky is overcast or mostly cloudy 60% of the time, and clear, mostly clear, or partly cloudy 40% 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 Šempeter pri Gorici varies throughout the year.

The wetter season lasts 8.0 months, from March 28 to November 27, with a greater than 26% chance of a given day being a wet day. The chance of a wet day peaks at 35% on June 12.

The drier season lasts 4.0 months, from November 27 to March 28. The smallest chance of a wet day is 17% on January 22.

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 35% on June 12.

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. Šempeter pri Gorici experiences significant seasonal variation in monthly rainfall.

Rain falls throughout the year in Šempeter pri Gorici. The most rain falls during the 31 days centered around November 1, with an average total accumulation of 4.1 inches.

The least rain falls around January 26, with an average total accumulation of 1.9 inches.

The length of the day in Šempeter pri Gorici varies significantly over the course of the year. In 2017, the shortest day is December 21, with 8 hours, 39 minutes of daylight; the longest day is June 21, with 15 hours, 45 minutes of daylight.

The earliest sunrise is at 5:14 AM on June 15, and the latest sunrise is 2 hours, 33 minutes later at 7:47 AM on January 1. The earliest sunset is at 4:20 PM on December 10, and the latest sunset is 4 hours, 40 minutes later at 9:00 PM on June 26.

Daylight saving time (DST) is observed in Šempeter pri Gorici during 2017, starting in the spring on March 26, lasting 7.1 months, and ending in the fall on October 29.

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.

Šempeter pri Gorici experiences some seasonal variation in the perceived humidity.

The muggier period of the year lasts for 3.1 months, from June 11 to September 13, during which time the comfort level is muggy, oppressive, or miserable at least 7% of the time. The muggiest day of the year is August 7, with muggy conditions 25% of the time.

The least muggy day of the year is February 28, when muggy conditions are essentially unheard of.

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 predominant average hourly wind direction in Šempeter pri Gorici varies throughout the year.

The wind is most often from the south for 3.6 weeks, from May 23 to June 17, with a peak percentage of 38% on June 1. The wind is most often from the east for 11 months, from June 17 to May 23, with a peak percentage of 53% on January 1.

Šempeter pri Gorici 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 significant seasonal variation over the course of the year.

The time of year with warmer water lasts for 3.1 months, from June 16 to September 20, with an average temperature above 72°F. The day of the year with the warmest water is August 4, with an average temperature of 77°F.

The time of year with cooler water lasts for 3.8 months, from December 20 to April 14, with an average temperature below 55°F. The day of the year with the coolest water is February 18, with an average temperature of 49°F.

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 19, with an average daily incident shortwave energy per square meter above 5.7 kWh. The brightest day of the year is July 8, with an average of 6.8 kWh.

The darker period of the year lasts for 3.5 months, from October 28 to February 13, with an average daily incident shortwave energy per square meter below 2.4 kWh. The darkest day of the year is December 28, with an average of 1.2 kWh.

For the purposes of this report, the geographical coordinates of Šempeter pri Gorici are 45.928 deg latitude, 13.641 deg longitude, and 253 ft elevation.

The topography within 2 miles of Šempeter pri Gorici contains significant variations in elevation, with a maximum elevation change of 591 feet and an average elevation above sea level of 305 feet. Within 10 miles contains significant variations in elevation (4,665 feet). Within 50 miles also contains extreme variations in elevation (9,377 feet).

The area within 2 miles of Šempeter pri Gorici is covered by cropland (38%), trees (31%), and artificial surfaces (30%), within 10 miles by trees (59%) and cropland (32%), and within 50 miles by trees (47%) and cropland (26%).

This report illustrates the typical weather in Šempeter pri Gorici, 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 4 weather stations near enough to contribute to our estimation of the temperature and dew point in Šempeter pri Gorici.

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

The stations contributing to this reconstruction are: Trieste – Friuli Venezia Giulia Airport (62%, 17 kilometers, southwest); Trieste (26%, 32 kilometers, south); Tarvisio (5%, 64 kilometers, north); and Ljubljana Jože Pučnik Airport (7%, 71 kilometers, northeast).

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.