Average Weather in Riberalta Bolivia
In Riberalta, the wet season is oppressive and overcast, the dry season is muggy and partly cloudy, and it is hot year round. Over the course of the year, the temperature typically varies from 68°F to 96°F and is rarely below 62°F or above 102°F.
Based on the beach/pool score, the best time of year to visit Riberalta for hot-weather activities is from mid May to late August.
The hot season lasts for 2.1 months, from August 8 to October 13, with an average daily high temperature above 94°F. The hottest day of the year is September 6, with an average high of 96°F and low of 74°F.
The cool season lasts for 6.8 months, from December 4 to June 28, with an average daily high temperature below 85°F. The coldest day of the year is July 11, with an average low of 68°F and high of 87°F.
Average High and Low Temperature
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
Vavoua, Côte d’Ivoire (4,294 miles away); Coimbatore, India (9,942 miles); and Ban Nam Yuen, Thailand (11,422 miles) are the far-away foreign places with temperatures most similar to Riberalta (view comparison).
In Riberalta, the average percentage of the sky covered by clouds experiences extreme seasonal variation over the course of the year.
The clearer part of the year in Riberalta begins around May 22 and lasts for 4.2 months, ending around September 28. On July 30, the clearest day of the year, the sky is clear, mostly clear, or partly cloudy 68% of the time, and overcast or mostly cloudy 32% of the time.
The cloudier part of the year begins around September 28 and lasts for 7.8 months, ending around May 22. On February 20, the cloudiest day of the year, the sky is overcast or mostly cloudy 86% of the time, and clear, mostly clear, or partly cloudy 14% of the time.
Cloud Cover Categories
0% clear 20% mostly clear 40% partly cloudy 60% mostly cloudy 80% overcast 100%
A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. The chance of wet days in Riberalta varies very significantly throughout the year.
The wetter season lasts 6.6 months, from October 11 to April 28, with a greater than 42% chance of a given day being a wet day. The chance of a wet day peaks at 77% on February 7.
The drier season lasts 5.5 months, from April 28 to October 11. The smallest chance of a wet day is 6% on July 21.
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 77% on February 7.
Daily Chance of Precipitation
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. Riberalta experiences extreme seasonal variation in monthly rainfall.
Rain falls throughout the year in Riberalta. The most rain falls during the 31 days centered around February 9, with an average total accumulation of 9.8 inches.
The least rain falls around July 19, with an average total accumulation of 0.5 inches.
Average Monthly Rainfall
The length of the day in Riberalta does not vary substantially over the course of the year, staying within 46 minutes of 12 hours throughout. In 2021, the shortest day is June 20, with 11 hours, 29 minutes of daylight; the longest day is December 21, with 12 hours, 46 minutes of daylight.
Hours of Daylight and Twilight
The earliest sunrise is at 5:50 AM on November 18, and the latest sunrise is 54 minutes later at 6:44 AM on July 12. The earliest sunset is at 6:07 PM on May 29, and the latest sunset is 48 minutes later at 6:55 PM on January 24.
Daylight saving time (DST) is not observed in Riberalta during 2021.
Sunrise & Sunset with Twilight
The figure below presents a compact representation of key lunar data for 2021. 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.
Moon Rise, Set & Phases
Riberalta experiences significant seasonal variation in the perceived humidity.
The muggier period of the year lasts for 10 months, from September 10 to July 18, during which time the comfort level is muggy, oppressive, or miserable at least 64% of the time. The muggiest day of the year is January 14, with muggy conditions 100% of the time.
The least muggy day of the year is August 9, with muggy conditions 52% of the time.
Humidity Comfort Levels
dry 55°F comfortable 60°F humid 65°F muggy 70°F oppressive 75°F miserable
The average hourly wind speed in Riberalta does not vary significantly over the course of the year, remaining within 0.2 miles per hour of 1.9 miles per hour throughout.
Average Wind Speed
The predominant average hourly wind direction in Riberalta varies throughout the year.
The wind is most often from the south for 1.0 weeks, from May 15 to May 22, with a peak percentage of 37% on May 15. The wind is most often from the north for 12 months, from May 22 to May 15, with a peak percentage of 78% on January 1.
Best Time of Year to Visit
To characterize how pleasant the weather is in Riberalta 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 Riberalta for general outdoor tourist activities is from late May to early August, with a peak score in the second 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 Riberalta for hot-weather activities is from mid May to late August, with a peak score in the second week of July.
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.
Temperatures in Riberalta are sufficiently warm year round that it is not entirely meaningful to discuss the growing season in these terms. We nevertheless include the chart below as an illustration of the distribution of temperatures experienced throughout the year.
Time Spent in Various Temperature Bands and the Growing Season
Growing Degree Days
Average Daily Incident Shortwave Solar Energy
For the purposes of this report, the geographical coordinates of Riberalta are -11.007 deg latitude, -66.063 deg longitude, and 492 ft elevation.
The topography within 2 miles of Riberalta contains only modest variations in elevation, with a maximum elevation change of 135 feet and an average elevation above sea level of 439 feet. Within 10 miles also contains only modest variations in elevation (253 feet). Within 50 miles also contains only modest variations in elevation (341 feet).
The area within 2 miles of Riberalta is covered by shrubs (47%), trees (20%), water (13%), and grassland (13%), within 10 miles by trees (79%) and water (13%), and within 50 miles by trees (93%).
This report illustrates the typical weather in Riberalta, based on a statistical analysis of historical hourly weather reports and model reconstructions from January 1, 1980 to December 31, 2016.
Riberalta is further than 200 kilometers from the nearest reliable weather station, so the weather-related data on this page were taken entirely from NASA's MERRA-2 satellite-era reanalysis . 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.
The temperature and dew point estimates are corrected for the difference between the reference elevation of the MERRA-2 grid cell and the elevation of Riberalta, according to the International Standard Atmosphere .
Time zones for airports and weather stations are provided by AskGeo.com .