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Average Weather in Rundu Namibia

In Rundu, the wet season is mostly cloudy, the dry season is mostly clear, and it is hot year round. Over the course of the year, the temperature typically varies from 48°F to 98°F and is rarely below 44°F or above 103°F.

Based on the beach/pool score, the best time of year to visit Rundu for hot-weather activities is from late August to mid October.

Climate Summary

hotwarmhotswelteringhotJanFebMarAprMayJunJulAugSepOctNovDecNowNow94%94%26%26%clearovercastprecipitation: 5.7 inprecipitation: 5.7 in0.0 in0.0 inmuggy: 37%muggy: 37%0%0%drydrybeach/pool score: 8.4beach/pool score: 8.44.84.8
Click on each chart for more information.

Temperature

The hot season lasts for 2.2 months, from September 13 to November 18, with an average daily high temperature above 94°F. The hottest day of the year is October 16, with an average high of 98°F and low of 69°F.

The cool season lasts for 2.2 months, from May 26 to August 2, with an average daily high temperature below 83°F. The coldest day of the year is July 7, with an average low of 48°F and high of 80°F.

Average High and Low Temperature

Average High and Low Temperature in RunduhotcoolJanFebMarAprMayJunJulAugSepOctNovDec0°F10°F20°F30°F40°F50°F60°F70°F80°F90°F100°F110°FJul 780°FJul 780°FOct 1698°FOct 1698°F48°F48°F69°F69°FMay 2683°FMay 2683°F60°F60°F70°F70°F53°F53°FLowHighNowNow
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 RunduJanFebMarAprMayJunJulAugSepOctNovDec12 AM4 AM8 AM12 PM4 PM8 PM12 AMNowNowcoldcoolcoolcomfortablewarmwarmhothotcomfortable
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 average hourly temperature, color coded into bands. The shaded overlays indicate night and civil twilight.

Cuicatlan, Mexico (8,307 miles away) and Ribeirão Preto, Brazil (4,377 miles) are the far-away foreign places with temperatures most similar to Rundu (view comparison).

Clouds

In Rundu, 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 Rundu begins around April 4 and lasts for 6.8 months, ending around October 28. On June 14, the clearest day of the year, the sky is clear, mostly clear, or partly cloudy 94% of the time, and overcast or mostly cloudy 6% of the time.

The cloudier part of the year begins around October 28 and lasts for 5.2 months, ending around April 4. On January 28, the cloudiest day of the year, the sky is overcast or mostly cloudy 74% of the time, and clear, mostly clear, or partly cloudy 26% of the time.

Cloud Cover Categories

Cloud Cover Categories in RunduclearercloudiercloudierJanFebMarAprMayJunJulAugSepOctNovDec0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%Jun 1494%Jun 1494%Jan 2826%Jan 2826%Apr 459%Apr 459%Oct 2861%Oct 2861%NowNowclearovercastmostly clearpartly cloudy
0% clear 20% mostly clear 40% partly cloudy 60% mostly cloudy 80% overcast 100%
The percentage of time spent in each cloud cover band, categorized by the percentage of the sky covered by clouds.

Precipitation

A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. The chance of wet days in Rundu varies very significantly throughout the year.

The wetter season lasts 4.3 months, from November 18 to March 29, with a greater than 27% chance of a given day being a wet day. The chance of a wet day peaks at 54% on January 31.

The drier season lasts 7.7 months, from March 29 to November 18. The smallest chance of a wet day is 0% on June 10.

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 54% on January 31.

Daily Chance of Precipitation

Daily Chance of Precipitation in RunduwetwetdryJanFebMarAprMayJunJulAugSepOctNovDec0%10%20%30%40%50%60%70%80%90%100%Jan 3154%Jan 3154%Jun 100%Jun 100%Jul 16-0%Jul 16-0%Nov 1827%Nov 1827%Mar 2927%Mar 2927%rain
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. Rundu experiences extreme seasonal variation in monthly rainfall.

The rainy period of the year lasts for 6.0 months, from October 20 to April 22, with a sliding 31-day rainfall of at least 0.5 inches. The most rain falls during the 31 days centered around January 24, with an average total accumulation of 5.7 inches.

The rainless period of the year lasts for 6.0 months, from April 22 to October 20. The least rain falls around July 1, with an average total accumulation of 0.0 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.

Sun

The length of the day in Rundu varies over the course of the year. In 2020, the shortest day is June 20, with 11 hours, 3 minutes of daylight; the longest day is December 21, with 13 hours, 13 minutes of daylight.

Hours of Daylight and Twilight

Hours of Daylight and Twilight in RunduJanFebMarAprMayJunJulAugSepOctNovDec0 hr24 hr4 hr20 hr8 hr16 hr12 hr12 hr16 hr8 hr20 hr4 hr24 hr0 hr12 hr, 7 minSep 2212 hr, 7 minSep 2213 hr, 13 minDec 2113 hr, 13 minDec 2112 hr, 8 minMar 2012 hr, 8 minMar 2011 hr, 3 minJun 2011 hr, 3 minJun 20daydaynightNowNow
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 5:44 AM on September 5, and the latest sunrise is 1 hour, 3 minutes later at 6:47 AM on April 4. The earliest sunset is at 5:12 PM on June 3, and the latest sunset is 2 hours, 11 minutes later at 7:22 PM on January 19.

Daylight saving time (DST) is observed in Rundu during 2020, starting in the spring on September 6 and ending in the fall on April 5.

Sunrise & Sunset with Twilight and Daylight Saving Time

Sunrise & Sunset with Twilight and Daylight Saving Time in RunduJanFebMarAprMayJunJulAugSepOctNovDec12 AM2 AM4 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PM12 AMSep 55:44 AMSep 55:44 AM7:22 PMJan 197:22 PMJan 19Jun 35:12 PMJun 35:12 PM6:47 AMApr 46:47 AMApr 4DSTApr 5DSTApr 5Sep 6DSTSep 6DSTdaynightSolarMidnightSolarMidnightSolarNoonSunriseSunset
The solar day over the course of the year 2020. 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.

Rundu experiences significant seasonal variation in the perceived humidity.

The muggier period of the year lasts for 3.7 months, from December 13 to April 3, during which time the comfort level is muggy, oppressive, or miserable at least 9% of the time. The muggiest day of the year is February 1, with muggy conditions 37% of the time.

The least muggy day of the year is July 12, when muggy conditions are essentially unheard of.

Humidity Comfort Levels

Humidity Comfort Levels in RundumuggyJanFebMarAprMayJunJulAugSepOctNovDec0%10%20%30%40%50%60%70%80%90%100%Jul 120%Jul 120%Feb 137%Feb 137%Dec 139%Dec 139%Apr 39%Apr 39%NowNowmuggymuggyhumidhumiddrydrycomfortablecomfortable
dry 55°F comfortable 60°F humid 65°F muggy 70°F oppressive 75°F miserable
The percentage of time spent at various humidity comfort levels, categorized by dew point.

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 Rundu experiences significant seasonal variation over the course of the year.

The windier part of the year lasts for 4.3 months, from June 22 to November 2, with average wind speeds of more than 8.7 miles per hour. The windiest day of the year is September 26, with an average hourly wind speed of 10.3 miles per hour.

The calmer time of year lasts for 7.7 months, from November 2 to June 22. The calmest day of the year is February 17, with an average hourly wind speed of 7.2 miles per hour.

Average Wind Speed

Average Wind Speed in RunduwindyJanFebMarAprMayJunJulAugSepOctNovDec0 mph2 mph4 mph6 mph8 mph10 mph12 mph14 mphSep 2610.3 mphSep 2610.3 mphFeb 177.2 mphFeb 177.2 mphJun 228.7 mphJun 228.7 mphNowNow
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 Rundu is from the east throughout the year.

Wind Direction

Wind Direction in RunduJanFebMarAprMayJunJulAugSepOctNovDec0%100%20%80%40%60%60%40%80%20%100%0%NowNoweastnorthwestsouth
northeastsouthwest
The percentage of hours in which the mean wind direction is from each of the four cardinal wind directions, excluding hours in which the mean wind speed is less than 1.0 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 Rundu 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 Rundu for general outdoor tourist activities is from late April to early September, with a peak score in the last week of May.

Tourism Score

Tourism Score in Rundubest timeJanFebMarAprMayJunJulAugSepOctNovDec02468108.68.64.04.08.68.6NowNow precipitationprecipitationtemperaturetemperaturetourism 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 Rundu for hot-weather activities is from late August to mid October, with a peak score in the third week of September.

Beach/Pool Score

Beach/Pool Score in Rundubest timeJanFebMarAprMayJunJulAugSepOctNovDec02468108.48.44.84.87.57.55.15.1NowNow 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).

Temperatures in Rundu 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

Time Spent in Various Temperature Bands and the Growing Season in RunduJanFebMarAprMayJunJulAugSepOctNovDec0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%100%Jan 1100%Jan 1100%Jul 2100%Jul 2NowNowcoldcoolcomfortablewarmhotsweltering
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 percentage of time spent in various temperature bands. 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.

Growing Degree Days

Growing Degree Days in RunduJanFebMarAprMayJunJulAugSepOctNovDec0°F1,000°F2,000°F3,000°F4,000°F5,000°F6,000°F7,000°F8,000°FJul 890°FJul 890°FAug 27900°FAug 27900°FJun 308,539°FJun 308,539°F
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 some seasonal variation over the course of the year.

The brighter period of the year lasts for 2.0 months, from September 14 to November 13, with an average daily incident shortwave energy per square meter above 6.9 kWh. The brightest day of the year is October 8, with an average of 7.2 kWh.

The darker period of the year lasts for 2.3 months, from May 17 to July 26, with an average daily incident shortwave energy per square meter below 5.7 kWh. The darkest day of the year is June 22, with an average of 5.3 kWh.

Average Daily Incident Shortwave Solar Energy

Average Daily Incident Shortwave Solar Energy in RundubrightdarkJanFebMarAprMayJunJulAugSepOctNovDec0 kWh1 kWh2 kWh3 kWh4 kWh5 kWh6 kWh7 kWh8 kWh9 kWhOct 87.2 kWhOct 87.2 kWhJun 225.3 kWhJun 225.3 kWhNowNow
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 Rundu are -17.933 deg latitude, 19.767 deg longitude, and 3,625 ft elevation.

The topography within 2 miles of Rundu contains only modest variations in elevation, with a maximum elevation change of 203 feet and an average elevation above sea level of 3,629 feet. Within 10 miles also contains only modest variations in elevation (302 feet). Within 50 miles contains only modest variations in elevation (571 feet).

The area within 2 miles of Rundu is covered by grassland (97%), within 10 miles by grassland (89%), and within 50 miles by grassland (75%) and shrubs (11%).

Data Sources

This report illustrates the typical weather in Rundu, based on a statistical analysis of historical hourly weather reports and model reconstructions from January 1, 1980 to December 31, 2016.

Rundu 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 Rundu, according to the International Standard Atmosphere .

All data relating to the Sun's position (e.g., sunrise and sunset) are computed using astronomical formulas from the book, Astronomical Algorithms 2nd Edition , by Jean Meeus.

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.