Climate and Average Weather Year Round at Jwaneng Airport Botswana

At Jwaneng Airport, the summers are long, hot, and partly cloudy and the winters are short, cool, dry, and clear. Over the course of the year, the temperature typically varies from 41°F to 89°F and is rarely below 34°F or above 96°F.

Based on the beach/pool score, the best time of year to visit Jwaneng Airport for hot-weather activities is from mid September to late March.

The hot season lasts for 5.6 months, from September 23 to March 11, with an average daily high temperature above 85°F. The hottest month of the year at Jwaneng Airport is January, with an average high of 88°F and low of 67°F.

The cool season lasts for 2.3 months, from May 25 to August 3, with an average daily high temperature below 74°F. The coldest month of the year at Jwaneng Airport is July, with an average low of 41°F and high of 72°F.

At Jwaneng Airport, 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 at Jwaneng Airport begins around March 30 and lasts for 6.4 months, ending around October 12.

The clearest month of the year at Jwaneng Airport is July, during which on average the sky is clear, mostly clear, or partly cloudy 93% of the time.

The cloudier part of the year begins around October 12 and lasts for 5.6 months, ending around March 30.

The cloudiest month of the year at Jwaneng Airport is December, during which on average the sky is overcast or mostly cloudy 36% 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 at Jwaneng Airport varies significantly throughout the year.

The wetter season lasts 5.5 months, from October 20 to April 5, with a greater than 19% chance of a given day being a wet day. The month with the most wet days at Jwaneng Airport is January, with an average of 10.9 days with at least 0.04 inches of precipitation.

The drier season lasts 6.5 months, from April 5 to October 20. The month with the fewest wet days at Jwaneng Airport is July, with an average of 0.2 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 at Jwaneng Airport is January, with an average of 10.9 days. Based on this categorization, the most common form of precipitation throughout the year is rain alone, with a peak probability of 37% on February 1.

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. Jwaneng Airport experiences significant seasonal variation in monthly rainfall.

The rainy period of the year lasts for 7.7 months, from September 18 to May 8, with a sliding 31-day rainfall of at least 0.5 inches. The month with the most rain at Jwaneng Airport is January, with an average rainfall of 2.8 inches.

The rainless period of the year lasts for 4.3 months, from May 8 to September 18. The month with the least rain at Jwaneng Airport is July, with an average rainfall of 0.1 inches.

The length of the day at Jwaneng Airport varies over the course of the year. In 2024, the shortest day is June 20, with 10 hours, 37 minutes of daylight; the longest day is December 21, with 13 hours, 40 minutes of daylight.

The earliest sunrise is at 5:23 AM on November 29, and the latest sunrise is 1 hour, 42 minutes later at 7:06 AM on July 4. The earliest sunset is at 5:39 PM on June 7, and the latest sunset is 1 hour, 36 minutes later at 7:15 PM on January 13.

Daylight saving time (DST) is not observed at Jwaneng Airport 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.

Jwaneng Airport experiences some seasonal variation in the perceived humidity.

The muggier period of the year lasts for 4.5 months, from November 18 to April 3, during which time the comfort level is muggy, oppressive, or miserable at least 6% of the time. The month with the most muggy days at Jwaneng Airport is January, with 6.5 days that are muggy or worse.

The least muggy day of the year is July 11, when muggy conditions are essentially unheard of.

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 at Jwaneng Airport experiences significant seasonal variation over the course of the year.

The windier part of the year lasts for 3.9 months, from August 4 to December 1, with average wind speeds of more than 9.0 miles per hour. The windiest month of the year at Jwaneng Airport is October, with an average hourly wind speed of 10.4 miles per hour.

The calmer time of year lasts for 8.1 months, from December 1 to August 4. The calmest month of the year at Jwaneng Airport is May, with an average hourly wind speed of 7.7 miles per hour.

The predominant average hourly wind direction at Jwaneng Airport varies throughout the year.

The wind is most often from the east for 3.6 months, from January 8 to April 25; for 1.2 months, from May 1 to June 8; and for 2.6 weeks, from June 14 to July 2, with a peak percentage of 52% on February 23. The wind is most often from the north for 6.0 days, from April 25 to May 1; for 6.0 days, from June 8 to June 14; and for 6.2 months, from July 2 to January 8, with a peak percentage of 36% on April 28.

To characterize how pleasant the weather is at Jwaneng Airport 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 Jwaneng Airport for general outdoor tourist activities are from late March to late May and from late July to mid October, with a peak score in the last week of August.

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 Jwaneng Airport for hot-weather activities is from mid September to late March, with a peak score in the last week of February.

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).

The growing season at Jwaneng Airport typically lasts for 11 months (343 days), from around July 14 to around June 23, rarely starting after August 21, or ending before May 25.

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 at Jwaneng Airport should appear around July 13, only rarely appearing before July 11 or after July 16.

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 4.4 months, from October 11 to February 22, with an average daily incident shortwave energy per square meter above 7.2 kWh. The brightest month of the year at Jwaneng Airport is December, with an average of 7.8 kWh.

The darker period of the year lasts for 2.8 months, from May 7 to August 1, with an average daily incident shortwave energy per square meter below 5.2 kWh. The darkest month of the year at Jwaneng Airport is June, with an average of 4.5 kWh.