Average Weather For Banja Luka, Bosnia and Herzegovina

Location

This report describes the typical weather at the Banja Luka International Airport (Banja Luka, Bosnia and Herzegovina) weather station over the course of an average year. It is based on the historical records from 2002 to 2012. Earlier records are either unavailable or unreliable.

Banja Luka has a humid continental climate with warm summers and no dry season. The area within 25 mi of this station is covered by forests (58%), croplands (36%), and grasslands (5%).

Temperature

Over the course of a year, the temperature typically varies from 25°F to 84°F and is rarely below 11°F or above 93°F.

Daily High and Low Temperature

The daily average low (blue) and high (red) temperature with percentile bands (inner band from 25th to 75th percentile, outer band from 10th to 90th percentile).

The warm season lasts from May 30 to September 10 with an average daily high temperature above 75°F. The hottest day of the year is July 13, with an average high of 84°F and low of 62°F.

The cold season lasts from December 2 to February 28 with an average daily high temperature below 47°F. The coldest day of the year is February 2, with an average low of 25°F and high of 40°F.

Fraction of Time Spent in Various Temperature Bands

The average fraction of time spent in various temperature bands: frigid (below 15°F), freezing (15°F to 32°F), cold (32°F to 50°F), cool (50°F to 65°F), comfortable (65°F to 75°F), warm (75°F to 85°F), hot (85°F to 100°F) and sweltering (above 100°F).

Sun

The length of the day varies significantly over the course of the year. The shortest day is December 21 with 8:49 hours of daylight; the longest day is June 20 with 15:37 hours of daylight.

Daily Hours of Daylight and Twilight

The number of hours during which the Sun is visible (black line), with various degrees of daylight, twilight, and night, indicated by the color bands. From bottom (most yellow) to top (most gray): full daylight, solar twilight (Sun is visible but less than 6° from the horizon), civil twilight (Sun is not visible but is less than 6° below the horizon), nautical twilight (Sun is between 6° and 12° below the horizon), astronomical twilight (Sun is between 12° and 18° below the horizon), and full night.

The earliest sunrise is at 5:04am on June 13 and the latest sunset is at 8:41pm on June 28. The latest sunrise is at 7:29am on January 5 and the earliest sunset is at 4:10pm on December 10.

Daylight saving time (DST) is observed in this location during 2012, starting in the spring on March 25 and ending in the fall on October 28.

Daily Sunrise & Sunset with Twilight and Daylight Saving Time

The solar day over the course of the year 2012 . From bottom to top, the black lines are the previous solar midnight, sunrise, solar noon, sunset, and the next solar midnight. The day, twilights (solar, 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

The median cloud cover ranges from 53% (partly cloudy) to 91% (mostly cloudy). The sky is cloudiest on December 29 and clearest on July 11. The clearer part of the year begins around April 8. The cloudier part of the year begins around October 2.

Median Cloud Cover

The median daily cloud cover (black line) with percentile bands (inner band from 40th to 60th percentile, outer band from 25th to 75th percentile).

On July 11, the clearest day of the year, the sky is clear, mostly clear, or partly cloudy 36% of the time, and overcast or mostly cloudy 17% of the time.

On December 29, the cloudiest day of the year, the sky is overcast, mostly cloudy, or partly cloudy 57% of the time, and clear or mostly clear 8% of the time.

Cloud Cover Types

The fraction of time spent in each of the five sky cover categories. From top (most blue) to bottom (most gray), the categories are clear, mostly clear, partly cloudy, mostly cloudy, and overcast. Pink indicates missing data. Outside of the United States clear skies are often reported ambiguously, leading them to be lumped in with the missing data.

Precipitation

The probability that precipitation will be observed at this location varies throughout the year. Precipitation is most likely around May 9, occurring in 58% of days. Precipitation is least likely around August 5, occurring in 42% of days.

Probability of Precipitation at Some Point in the Day

The fraction of days in which various types of precipitation are observed. If more than one type of precipitation is reported in a given day, the more severe precipitation is counted. For example, if light rain is observed in the same day as a thunderstorm, that day counts towards the thunderstorm totals. The order of severity is from the top down in this graph, with the most severe at the bottom.

Over the entire year, the most common forms of precipitation are moderate rain, thunderstorms, light rain, and moderate snow.

Moderate rain is the most severe precipitation observed during 33% of those days with precipitation. It is most likely around November 12, when it is observed during 26% of all days.

Thunderstorms are the most severe precipitation observed during 27% of those days with precipitation. They are most likely around June 19, when it is observed during 33% of all days.

Light rain is the most severe precipitation observed during 15% of those days with precipitation. It is most likely around April 17, when it is observed during 10% of all days.

Moderate snow is the most severe precipitation observed during 12% of those days with precipitation. It is most likely around February 15, when it is observed during 19% of all days.

Types of Precipitation Throughout the Year

Relative frequency of various types of precipitation over the course of a typical year.

During the warm season, which lasts from May 30 to September 10, there is a 45% average chance that precipitation will be observed at some point during a given day. When precipitation does occur it is most often in the form of thunderstorms (61% of days with precipitation have at worst thunderstorms), moderate rain (24%), and light rain (13%).

During the cold season, which lasts from December 2 to February 28, there is a 54% average chance that precipitation will be observed at some point during a given day. When precipitation does occur it is most often in the form of moderate snow (29% of days with precipitation have at worst moderate snow), moderate rain (28%), light snow (16%), and light rain (14%).

Warm Season Precipitation

Cold Season Precipitation

Relative frequency of various types of precipitation during the warm and cold seasons respectively.

Snow

The likelihood of snow falling is highest around February 11, occurring in 32% of days. The season in which it is relatively likely for snow to fall spans from November 19 to April 3.

Probability of Snow Fall Being Reported in a Given Day

Probability that snow will be reported at least once in a given day. The season is defined as the period during which the probability is greater than one third the maximum probability.

Either snow rarely accumulates at this location or snow depth measurements are unavailable or unreliable.

Humidity

The relative humidity typically ranges from 44% (comfortable) to 97% (very humid) over the course of the year, rarely dropping below 26% (dry) and reaching as high as 100% (very humid).

The air is driest around July 13, at which time the relative humidity drops below 52% (mildly humid) three days out of four; it is most humid around October 14, exceeding 95% (very humid) three days out of four.

Relative Humidity

The average daily high (blue) and low (brown) relative humidity with percentile bands (inner bands from 25th to 75th percentile, outer bands from 10th to 90th percentile).

Dew Point

Dew point is often a better measure of how comfortable a person will find the weather than relative humidity because it more directly relates to whether perspiration will evaporate from the skin, thereby cooling the body. Lower dew points feel drier and higher dew points feel more humid.

Over the course of a year, the dew point typically varies from 22°F (dry) to 65°F (muggy) and is rarely below 7°F (dry) or above 70°F (muggy).

There are two periods in the year that are most comfortable: The first is between April 20 and July 24 and the second is between July 28 and October 17. The air feels neither too dry nor too muggy during these periods.

Dew Point

The daily average low (blue) and high (red) dew point with percentile bands (inner band from 25th to 75th percentile, outer band from 10th to 90th percentile).

Wind

Over the course of the year typical wind speeds vary from 0 mph to 9 mph (calm to gentle breeze), rarely exceeding 15 mph (moderate breeze).

The highest average wind speed of 6 mph (light breeze) occurs around March 15, at which time the average daily maximum wind speed is 9 mph (gentle breeze).

The lowest average wind speed of 3 mph (light air) occurs around January 5, at which time the average daily maximum wind speed is 5 mph (light breeze).

Wind Speed

The average daily minimum (red), maximum (green), and average (black) wind speed with percentile bands (inner band from 25th to 75th percentile, outer band from 10th to 90th percentile).
The wind is most often out of the south (13% of the time), north west (13% of the time), and north (13% of the time). The wind is least often out of the south west (4% of the time) and east (5% of the time).

Wind Directions Over the Entire Year

The fraction of time spent with the wind blowing from the various directions over the entire year. Values do not sum to 100% because the wind direction is undefined when the wind speed is zero.

Fraction of Time Spent with Various Wind Directions

The fraction of time spent with the wind blowing from the various directions on a daily basis. Stacked values do not always sum to 100% because the wind direction is undefined when the wind speed is zero.