Average Weather For La Paz, Bolivia

Location

This report describes the typical weather at the El Alto International Airport (La Paz, Bolivia) weather station over the course of an average year. It is based on the historical records from 1975 to 2012. Earlier records are either unavailable or unreliable.

La Paz has a cool temperate climate with dry winters and short cool summers. The area within 25 mi of this station is covered by shrublands (55%), grasslands (39%), and forests (5%).

Temperature

Over the course of a year, the temperature typically varies from 26°F to 60°F and is rarely below 22°F or above 64°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 October 15 to December 14 with an average daily high temperature above 59°F. The hottest day of the year is November 4, with an average high of 60°F and low of 37°F.

The cold season lasts from June 7 to July 26 with an average daily high temperature below 56°F. The coldest day of the year is July 17, with an average low of 26°F and high of 55°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 June 20 with 11:09 hours of daylight; the longest day is December 21 with 13:08 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 5:50am on November 24 and the latest sunset is at 7:13pm on January 18. The latest sunrise is at 7:02am on July 3 and the earliest sunset is at 6:06pm on June 7.

Daylight savings time (DST) is not observed in 2012.

Daily Sunrise & Sunset with Twilight

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.

Clouds

The median cloud cover ranges from 19% (mostly clear) to 79% (partly cloudy). The sky is cloudiest on January 20 and clearest on July 5. The clearer part of the year begins around April 17. The cloudier part of the year begins around October 9.

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 5, the clearest day of the year, the sky is clear, mostly clear, or partly cloudy 74% of the time, and overcast or mostly cloudy 11% of the time.

On January 20, the cloudiest day of the year, the sky is overcast, mostly cloudy, or partly cloudy 74% of the time, and clear or mostly clear 18% 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 January 26, occurring in 80% of days. Precipitation is least likely around July 3, occurring in 9% 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 thunderstorms, moderate rain, and light rain.

Thunderstorms are the most severe precipitation observed during 72% of those days with precipitation. They are most likely around January 17, when it is observed during 60% of all days.

Moderate rain is the most severe precipitation observed during 11% of those days with precipitation. It is most likely around February 3, when it is observed during 11% of all days.

Light rain is the most severe precipitation observed during 10% of those days with precipitation. It is most likely around January 30, when it is observed during 9% 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 October 15 to December 14, there is a 58% 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 (81% of days with precipitation have at worst thunderstorms), moderate rain (8%), and light rain (7%).

During the cold season, which lasts from June 7 to July 26, there is a 10% 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 (26% of days with precipitation have at worst thunderstorms), moderate rain (19%), moderate snow (19%), and light rain (16%).

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 September 1, occurring in 5% of days.

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 25% (dry) to 99% (very humid) over the course of the year, rarely dropping below 13% (very dry) and reaching as high as 100% (very humid).

The air is driest around July 26, at which time the relative humidity drops below 29% (dry) three days out of four; it is most humid around January 14, exceeding 99% (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 12°F (dry) to 43°F (dry) and is rarely below 1°F (dry) or above 46°F (dry).

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 16 mph (calm to moderate breeze), rarely exceeding 23 mph (fresh breeze).

The highest average wind speed of 7 mph (light breeze) occurs around November 4, at which time the average daily maximum wind speed is 16 mph (moderate breeze).

The lowest average wind speed of 5 mph (light breeze) occurs around April 7, at which time the average daily maximum wind speed is 12 mph (moderate 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 east (23% of the time) and west (11% of the time). The wind is least often out of the south (2% of the time), south west (4% of the time), and north west (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.