Climate and Average Weather Year Round in Usakos Namibia

In Usakos, the summers are long, hot, and partly cloudy; the winters are short, cool, windy, and clear; and it is dry year round. Over the course of the year, the temperature typically varies from 44°F to 90°F and is rarely below 37°F or above 98°F.

Based on the tourism score, the best times of year to visit Usakos for warm-weather activities are from late March to early July and from mid July to early November.

The hot season lasts for 5.5 months, from October 9 to March 23, with an average daily high temperature above 87°F. The hottest month of the year in Usakos is January, with an average high of 89°F and low of 63°F.

The cool season lasts for 2.4 months, from May 26 to August 8, with an average daily high temperature below 79°F. The coldest month of the year in Usakos is July, with an average low of 45°F and high of 77°F.

In Usakos, 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 Usakos begins around March 28 and lasts for 8.0 months, ending around November 27.

The clearest month of the year in Usakos is May, during which on average the sky is clear, mostly clear, or partly cloudy 92% of the time.

The cloudier part of the year begins around November 27 and lasts for 4.0 months, ending around March 28.

The cloudiest month of the year in Usakos is February, during which on average the sky is overcast or mostly cloudy 39% of the time.

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

The wetter season lasts 3.0 months, from January 4 to April 5, with a greater than 12% chance of a given day being a wet day. The month with the most wet days in Usakos is February, with an average of 6.3 days with at least 0.04 inches of precipitation.

The drier season lasts 9.0 months, from April 5 to January 4. The month with the fewest wet days in Usakos is August, with an average of 0.0 days with at least 0.04 inches of precipitation.

Among wet days, we distinguish between those that experience rain alone, snow alone, or a mixture of the two. The month with the most days of rain alone in Usakos is February, with an average of 6.3 days. Based on this categorization, the most common form of precipitation throughout the year is rain alone, with a peak probability of 23% on February 17.

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. Usakos experiences some seasonal variation in monthly rainfall.

The rainy period of the year lasts for 3.7 months, from December 26 to April 17, with a sliding 31-day rainfall of at least 0.5 inches. The month with the most rain in Usakos is February, with an average rainfall of 1.4 inches.

The rainless period of the year lasts for 8.3 months, from April 17 to December 26. The month with the least rain in Usakos is August, with an average rainfall of 0.0 inches.

The length of the day in Usakos varies over the course of the year. In 2024, the shortest day is June 20, with 10 hours, 47 minutes of daylight; the longest day is December 21, with 13 hours, 29 minutes of daylight.

The earliest sunrise is at 6:05 AM on November 28, and the latest sunrise is 1 hour, 32 minutes later at 7:37 AM on July 5. The earliest sunset is at 6:21 PM on June 5, and the latest sunset is 1 hour, 25 minutes later at 7:46 PM on January 15.

Daylight saving time (DST) is not observed in Usakos during 2024.

The figure below presents a compact representation of key lunar data for 2024. 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.

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.

The perceived humidity level in Usakos, as measured by the percentage of time in which the humidity comfort level is muggy, oppressive, or miserable, does not vary significantly over the course of the year, staying within 1% of 1% throughout.

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

The windier part of the year lasts for 5.8 months, from May 17 to November 10, with average wind speeds of more than 9.0 miles per hour. The windiest month of the year in Usakos is July, with an average hourly wind speed of 10.5 miles per hour.

The calmer time of year lasts for 6.2 months, from November 10 to May 17. The calmest month of the year in Usakos is March, with an average hourly wind speed of 7.4 miles per hour.

The predominant average hourly wind direction in Usakos varies throughout the year.

The wind is most often from the east for 6.3 months, from March 15 to September 25, with a peak percentage of 51% on June 27. The wind is most often from the south for 5.7 months, from September 25 to March 15, with a peak percentage of 49% on January 1.

To characterize how pleasant the weather is in Usakos 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 times of year to visit Usakos for general outdoor tourist activities are from late March to early July and from mid July to early November, with a peak score in the second week of May.

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 Usakos for hot-weather activities is from late September to mid April, with a peak score in the first week of December.

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.

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).

While it does not do so every year, freezing temperatures are seen in Usakos over some winters. The day least likely to be in the growing season is July 15, with a 71% chance.

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 Usakos should appear around July 10, only rarely appearing before July 8 or after July 12.

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 significant seasonal variation over the course of the year.

The brighter period of the year lasts for 3.2 months, from October 18 to January 26, with an average daily incident shortwave energy per square meter above 7.8 kWh. The brightest month of the year in Usakos is December, with an average of 8.5 kWh.

The darker period of the year lasts for 3.0 months, from May 5 to August 5, with an average daily incident shortwave energy per square meter below 5.6 kWh. The darkest month of the year in Usakos is June, with an average of 4.9 kWh.

For the purposes of this report, the geographical coordinates of Usakos are -22.000 deg latitude, 15.600 deg longitude, and 2,923 ft elevation.

The topography within 2 miles of Usakos contains significant variations in elevation, with a maximum elevation change of 771 feet and an average elevation above sea level of 2,989 feet. Within 10 miles contains significant variations in elevation (3,100 feet). Within 50 miles contains large variations in elevation (6,706 feet).

The area within 2 miles of Usakos is covered by grassland (96%), within 10 miles by grassland (79%) and bare soil (21%), and within 50 miles by grassland (62%) and bare soil (35%).