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Average Weather in Banja Luka Bosnia & Herzegovina

In Banja Luka, the summers are warm, the winters are very cold, and it is partly cloudy year round. Over the course of the year, the temperature typically varies from 26°F to 82°F and is rarely below 14°F or above 92°F.

Climate Summary

very coldcoldcoolcomfortablewarmcoolcoldvery coldJanFebMarAprMayJunJulAugSepOctNovDec78%78%37%37%clearovercastprecipitation: 2.9 inprecipitation: 2.9 in1.7 in1.7 inmuggy: 11%muggy: 11%0%0%drydrytourism score: 7.2tourism score: 7.20.20.2
Click on each chart for more information.

Based on the tourism score, the best time of year to visit Banja Luka for warm-weather activities is from mid June to mid September.

Temperature

The warm season lasts for 3.4 months, from May 29 to September 12, with an average daily high temperature above 74°F. The hottest day of the year is August 2, with an average high of 82°F and low of 60°F.

The cold season lasts for 3.4 months, from November 23 to March 2, with an average daily high temperature below 48°F. The coldest day of the year is January 14, with an average low of 26°F and high of 39°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 in Banja LukaJanFebMarAprMayJunJulAugSepOctNovDec12 AM4 AM8 AM12 PM4 PM8 PM12 AMfreezingvery coldvery coldcoldcoldcoolcomfortablewarmfreezingfreezingcomfortable
The average hourly temperature, color coded into bands: frigid < 15°F < freezing < 32°F < very cold < 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.

Roan Mountain, Tennessee, United States (4,919 miles away) is the far-away foreign place with temperatures most similar to Banja Luka (view comparison).

Clouds

In Banja Luka, 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 Banja Luka begins around June 7 and lasts for 3.5 months, ending around September 23. On July 31, the clearest day of the year, the sky is clear, mostly clear, or partly cloudy 78% of the time, and overcast or mostly cloudy 22% of the time.

The cloudier part of the year begins around September 23 and lasts for 8.5 months, ending around June 7. On December 7, 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 Categories

Cloud Cover Categories in Banja LukaclearercloudiercloudierJanFebMarAprMayJunJulAugSepOctNovDec0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%Jul 3178%Jul 3178%Dec 737%Dec 737%Jun 758%Jun 758%Sep 2358%Sep 2358%clearpartly cloudymostly cloudyovercastmostly clear
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 Banja Luka varies throughout the year.

The wetter season lasts 9.7 months, from February 20 to December 12, with a greater than 27% chance of a given day being a wet day. The chance of a wet day peaks at 34% on June 5.

The drier season lasts 2.3 months, from December 12 to February 20. The smallest chance of a wet day is 20% on January 23.

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 34% on June 5.

Daily Chance of Precipitation

Daily Chance of Precipitation in Banja LukawetdrydryJanFebMarAprMayJunJulAugSepOctNovDec0%10%20%30%40%50%60%70%80%90%100%Jun 534%Jun 534%Jan 2320%Jan 2320%Jan 125%Jan 125%rainsnowmixed
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. Banja Luka experiences some seasonal variation in monthly rainfall.

Rain falls throughout the year in Banja Luka. The most rain falls during the 31 days centered around September 17, with an average total accumulation of 2.9 inches.

The least rain falls around January 28, 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.

Snowfall

We report snowfall in liquid-equivalent terms. The actual depth of new snowfall is typically between 5 and 10 times the liquid-equivalent amount, assuming the ground is frozen. Colder, drier snow tends to be on the higher end of that range and warmer, wetter snow on the lower end.

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

The snowy period of the year lasts for 4.3 months, from November 11 to March 21, with a sliding 31-day liquid-equivalent snowfall of at least 0.1 inches. The most snow falls during the 31 days centered around January 5, with an average total liquid-equivalent accumulation of 0.4 inches.

The snowless period of the year lasts for 7.7 months, from March 21 to November 11. The least snow falls around July 19, with an average total liquid-equivalent accumulation of 0.0 inches.

Average Liquid-Equivalent Monthly Snowfall

Average Liquid-Equivalent Monthly Snowfall in Banja LukasnowsnowJanFebMarAprMayJunJulAugSepOctNovDec0.0 in0.5 in1.0 in1.5 in2.0 in2.5 in3.0 inJan 50.4 inJan 50.4 inJul 190.0 inJul 190.0 inNov 110.1 inNov 110.1 inMar 210.1 inMar 210.1 in
The average liquid-equivalent snowfall (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 rainfall.

Sun

The length of the day in Banja Luka varies significantly over the course of the year. In 2018, the shortest day is December 21, with 8 hours, 48 minutes of daylight; the longest day is June 21, with 15 hours, 35 minutes of daylight.

Hours of Daylight and Twilight

Hours of Daylight and Twilight in Banja LukaJanFebMarAprMayJunJulAugSepOctNovDec0 hr24 hr4 hr20 hr8 hr16 hr12 hr12 hr16 hr8 hr20 hr4 hr24 hr0 hr12 hr, 9 minMar 2012 hr, 9 minMar 2015 hr, 35 minJun 2115 hr, 35 minJun 2112 hr, 11 minSep 2312 hr, 11 minSep 238 hr, 48 minDec 218 hr, 48 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 5:04 AM on June 15, and the latest sunrise is 2 hours, 24 minutes later at 7:28 AM on January 2. The earliest sunset is at 4:10 PM on December 10, and the latest sunset is 4 hours, 31 minutes later at 8:41 PM on June 26.

Daylight saving time (DST) is observed in Banja Luka during 2018, starting in the spring on March 25, lasting 7.1 months, and ending in the fall on October 28.

Sunrise & Sunset with Twilight and Daylight Saving Time

Sunrise & Sunset with Twilight and Daylight Saving Time in Banja LukaJanFebMarAprMayJunJulAugSepOctNovDec12 AM2 AM4 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PM12 AMJun 155:04 AMJun 155:04 AM8:41 PMJun 268:41 PMJun 26Dec 104:10 PMDec 104:10 PM7:28 AMJan 27:28 AMJan 2Mar 25DSTMar 25DSTDSTOct 28DSTOct 28daynightnightnightnightSolarMidnightSolarMidnightSolarNoonSunriseSunset
The solar day over the course of the year 2018. 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.

Banja Luka experiences some seasonal variation in the perceived humidity.

The muggier period of the year lasts for 2.6 months, from June 9 to August 30, during which time the comfort level is muggy, oppressive, or miserable at least 3% of the time. The muggiest day of the year is July 28, with muggy conditions 11% of the time.

The least muggy day of the year is February 23, when muggy conditions are essentially unheard of.

Humidity Comfort Levels

Humidity Comfort Levels in Banja LukamuggyJanFebMarAprMayJunJulAugSepOctNovDec0%10%20%30%40%50%60%70%80%90%100%Feb 230%Feb 230%Jul 2811%Jul 2811%Jun 93%Jun 93%Aug 303%Aug 303%humidhumidcomfortablecomfortabledrydrymuggymuggy
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 Banja Luka experiences mild seasonal variation over the course of the year.

The windier part of the year lasts for 4.9 months, from November 27 to April 24, with average wind speeds of more than 4.1 miles per hour. The windiest day of the year is February 20, with an average hourly wind speed of 4.9 miles per hour.

The calmer time of year lasts for 7.1 months, from April 24 to November 27. The calmest day of the year is July 9, with an average hourly wind speed of 3.3 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 Banja Luka varies throughout the year.

The wind is most often from the east for 2.2 months, from January 12 to March 19; for 2.0 days, from May 8 to May 10; and for 1.3 months, from August 13 to September 21, with a peak percentage of 32% on August 26. The wind is most often from the south for 2.6 weeks, from March 19 to April 6; for 1.3 weeks, from April 29 to May 8; and for 3.7 months, from September 21 to January 12, with a peak percentage of 29% on April 5. The wind is most often from the north for 3.3 weeks, from April 6 to April 29 and for 3.1 months, from May 10 to August 13, with a peak percentage of 35% on July 21.

Wind Direction

Wind Direction in Banja LukaSESNNESJanFebMarAprMayJunJulAugSepOctNovDec0%100%20%80%40%60%60%40%80%20%100%0%westsoutheastnorth
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).

Best Time of Year to Visit

To characterize how pleasant the weather is in Banja Luka 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 Banja Luka for general outdoor tourist activities is from mid June to mid September, with a peak score in the second week of August.

Tourism Score

Tourism Score in Banja Lukabest timeJanFebMarAprMayJunJulAugSepOctNovDec02468107.27.20.20.2 precipitationprecipitationcloudscloudstemperaturetemperaturetourism score
The tourism score (filled area), and its constituents: the temperature score (red line), the cloud cover score (blue line), and the precipitation score (green line).

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 Banja Luka for hot-weather activities is from early July to mid August, with a peak score in the first week of August.

Beach/Pool Score

Beach/Pool Score in Banja Lukabest timeJanFebMarAprMayJunJulAugSepOctNovDec02468106.56.50.00.0 precipitationprecipitationcloudscloudstemperaturetemperaturebeach/pool score
The beach/pool score (filled area), and its constituents: the temperature score (red line), the cloud cover score (blue line), and the precipitation score (green line).

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.

Growing Season

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 Banja Luka typically lasts for 6.7 months (204 days), from around April 5 to around October 27, rarely starting before March 14 or after April 27, and rarely ending before October 9 or after November 16.

Time Spent in Various Temperature Bands and the Growing Season

Time Spent in Various Temperature Bands and the Growing Season in Banja Lukagrowing seasonJanFebMarAprMayJunJulAugSepOctNovDec0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%50%Apr 550%Apr 550%Oct 2750%Oct 2790%Apr 2790%Apr 2790%Oct 990%Oct 910%Mar 1410%Mar 1410%Nov 1610%Nov 160%Jan 250%Jan 25Jul 18100%Jul 18100%freezingvery coldcoldcoolcomfortablewarmhot
The percentage of time spent in various temperature bands: frigid < 15°F < freezing < 32°F < very cold < 45°F < cold < 55°F < cool < 65°F < comfortable < 75°F < warm < 85°F < hot < 95°F < sweltering. The black line is the percentage chance that a given day is within the growing season.

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 Banja Luka should appear around April 1, only rarely appearing before March 17 or after April 20.

Growing Degree Days

The average growing degree days accumulated over the course of the year, 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 3.2 months, from May 12 to August 20, with an average daily incident shortwave energy per square meter above 6.0 kWh. The brightest day of the year is July 7, with an average of 7.1 kWh.

The darker period of the year lasts for 3.6 months, from October 29 to February 16, with an average daily incident shortwave energy per square meter below 2.5 kWh. The darkest day of the year is December 15, 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 Banja Luka are 44.778 deg latitude, 17.194 deg longitude, and 669 ft elevation.

The topography within 2 miles of Banja Luka contains significant variations in elevation, with a maximum elevation change of 778 feet and an average elevation above sea level of 600 feet. Within 10 miles contains significant variations in elevation (2,703 feet). Within 50 miles contains large variations in elevation (6,155 feet).

The area within 2 miles of Banja Luka is covered by artificial surfaces (57%) and cropland (33%), within 10 miles by cropland (51%) and trees (43%), and within 50 miles by trees (53%) and cropland (34%).

Data Sources

This report illustrates the typical weather in Banja Luka, 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 Banja Luka.

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

The stations contributing to this reconstruction are: Banja Luka International Airport (83%, 20 kilometers, northeast); Bihac (8%, 104 kilometers, west); Sarajevo Airport (4.9%, 140 kilometers, southeast); and Split Airport (4.2%, 155 kilometers, southwest).

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.

Disclaimer

The information on this site is provided as is, without any assurances as to its accuracy or suitability for any purpose. Weather data is prone to errors, outages, and other defects. We assume no responsibility for any decisions made on the basis of the content presented on this site.

We draw particular cautious attention to our reliance on the MERRA-2 model-based reconstructions for a number of important data series. While having the tremendous advantages of temporal and spatial completeness, these reconstructions: (1) are based on computer models that may have model-based errors, (2) are coarsely sampled on a 50 km grid and are therefore unable to reconstruct the local variations of many microclimates, and (3) have particular difficulty with the weather in some coastal areas, especially small islands.

We further caution that our travel scores are only as good as the data that underpin them, that weather conditions at any given location and time are unpredictable and variable, and that the definition of the scores reflects a particular set of preferences that may not agree with those of any particular reader.