March Weather in Johannesburg, South Africa

Last updated: August 31, 2025

March in Johannesburg, South Africa welcomes the transition from summer with temperatures ranging from a comfortable minimum of 8°C (46°F) to a maximum of 30°C (86°F), averaging around 19°C (66°F). This month marks a notable period of humidity at 77%, with the city experiencing 79 mm (3.1 in) of precipitation over approximately 10 days. This combination of warm days and occasional rainfall contributes to Johannesburg's vibrant springtime atmosphere, making it an enticing time to explore the city.

March Temperature in Johannesburg

In March, Johannesburg experiences a gentle transition as summer draws to a close, with temperatures ranging from a cool 8°C (46°F) at night to a comfortable maximum of 30°C (86°F) during the day. The average temperature settles at 19°C (66°F), slightly cooler compared to the peak summer months of January and February. This gradual dip is a precursor to the crisp autumn air that follows in April, marking a shift from the hotter days of earlier months. As daylight begins to wane, March offers a delightful blend of warmth and refreshing evenings, making it an ideal time for outdoor activities in this vibrant city.

March Weather in Johannesburg: Daily Temperature Highs, Lows, and Averages

The chart illustrates March temperature patterns in Johannesburg, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Johannesburg, March typically has an average temperature of {2}°C ({3}°F), with highs reaching up to {4}°C ({5}°F) and lows dropping to around {6}°C ({7}°F).
JanFebMarAprMayJunJulAugSepOctNovDec696866615651505763666868
Data source: Temperature data for Johannesburg generated using information from the Copernicus Climate Change Service.
Choose your preferred temperature unit
The average of daily temperatures (24 hours) calculated across all days in the month.

March Precipitation in Johannesburg

In March, Johannesburg experiences a noticeable decrease in precipitation, with 79 mm (3.1 in) of rainfall recorded over about 10 days. This decline continues the trend started in January and February, where heavier rains—a total of 130 mm (5.1 in) in January and 138 mm (5.4 in) in February—graced the city. March's more moderate rainfall marks the transition towards drier conditions, which only intensify into April, where precipitation drops to 63 mm (2.5 in). As the months progress into the winter period, Johannesburg's weather shifts further, bringing increasingly sparse rainfall, culminating in minimal precipitation of just 2 mm (0.1 in) by July. This pattern highlights the city's distinct seasonal changes, where the lush summer rains give way to a starkly drier winter landscape, shaping both the environment and daily life in Johannesburg.

March Precipitation Trends in Johannesburg

The chart displays monthly precipitation patterns in Johannesburg, with values for each month alongside March’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how March’s conditions compare to those of other months. In Johannesburg, March typically receives around {2} mm ({3} inches) of precipitation spread over approximately {4} days.
JanFebMarAprMayJunJulAugSepOctNovDec13013879631362396397146
Data source: Precipitation data for March generated using information from the Copernicus Climate Change Service.
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March Humidity in Johannesburg

In March, Johannesburg experiences a humidity level of 77%, mirroring February’s figures and hinting at the end of the hot summer months. This consistent humidity indicates a transitional phase, as the city begins to shift towards the cooler autumn season. Notably, humidity peaks in the late spring and early summer, reaching a high of 82% in November and 81% in December, but gradually decreases as the year progresses. In stark contrast, the winter months of June and July reveal a significant drop, falling to 73% and 71%, respectively. Overall, March serves as a vital indicator of Johannesburg's climatic rhythm, where lingering warmth meets the onset of dryer, cooler days ahead.

March Average Humidity in Johannesburg

This chart illustrates the average monthly humidity levels in Johannesburg, with March’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In March, average humidity in Johannesburg is approximately {2}%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec79%77%77%81%83%73%71%68%74%74%82%81%
Data source: Humidity data for March generated using information from the Copernicus Climate Change Service.

March UV Index in Johannesburg

In March, Johannesburg experiences a UV Index of 13, maintaining its status in the extreme exposure category, with a burn time of just 10 minutes. This slight decrease from January and February, both with a UV Index of 15, indicates a gradual shift as summer approaches its end. As the months progress, the index will continue to trend downward, reaching a UV Index of 10 in April, yet it remains crucial for residents and visitors to stay vigilant about sun protection during this period. For more information on UV levels throughout the year, visit Johannesburg UV Index.

Maximum UV Index Levels in Johannesburg for March

The chart shows the monthly maximum UV Index (UVI) for Johannesburg in March, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In March, the maximum UV index in Johannesburg typically reaches {2}, which falls under the {3} exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec15151310766811121416
Data source: Johannesburg March UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

March Sunshine in Johannesburg

March ushers in an impressive 354 hours of sunshine in Johannesburg, South Africa, making it one of the sunniest months of the year. This surge in sunlight reflects a clear upward trend as the seasons shift, following a steady increase from January's 308 hours and February's 317 hours. After March, the hours dip slightly in April to 315, but the overall pattern exhibits a notable peak in sunshine as the year advances, culminating in a vibrant 371 hours in December. With this radiant start to autumn, March beautifully bridges the gap between summer's splendor and the approaching cooler months, inviting locals and visitors alike to bask in the warmth of the sun.

Monthly Sunshine Duration in Johannesburg: March Highlighted

The March sunshine duration represents the total number of hours Johannesburg experiences direct sunlight during the month of March, excluding cloudy or obstructed periods. This chart compares the sunshine duration of March with the other months of the year.
JanFebMarAprMayJunJulAugSepOctNovDec308h317h354h315h319h298h314h329h337h362h370h371h
Data source: Johannesburg March Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Johannesburg During March

March in Johannesburg, South Africa, marks a significant turning point in the transition to sunnier weather, boasting a favorable 67% chance of sunshine. This increase from the 33% seen in February signals the arrival of early autumn, where daylight hours extend, and the warmth of summer lingers. As the month progresses, the likelihood of clear skies sets the stage for outdoor activities, with April elevating the odds even further to 81%. This gradual rise in sunny days demonstrates a clear trend toward brighter weather, making March a promising time for those seeking to soak up the sun in this vibrant city.

Percentage of Sunny Days in March in Johannesburg

The chart illustrates the percentage of sunny days in Johannesburg throughout the year, with March highlighted. It highlights the variation in sunshine across each month and provides an overview of the typical frequency of sunny days, offering insights into how often Johannesburg experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec29%33%67%81%80%83%95%80%78%61%60%41%
Data source: Johannesburg March chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Johannesburg in March

As March arrives in Johannesburg, the city basks in a comfortable 12 hours of daylight each day, a trend that mirrors the gradual shortening of daylight witnessed from the peak summer month of January. This consistency continues from February’s 12 hours, hinting at the subtle transition towards autumn. As the month unfolds, days begin to wane, heralding the approach of cooler months ahead, with daylight diminishing to 11 hours in April. Intriguingly, the daylight hours from March to May depict a gentle decline, offering a seamless flow from the long days of summer to the more tempered light of winter. This natural rhythm showcases Johannesburg's enchanting seasonal changes, allowing residents to revel in the shifting shadows and warm sunsets.

Average Daylight Hours in Johannesburg for March

The chart illustrates the variation in daylight duration in Johannesburg throughout the year, with March highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec13h 33m12h 57m12h 12m11h 26m10h 48m10h 30m10h 40m11h 12m11h 56m12h 42m13h 23m13h 44m
Data source: Johannesburg daylight hours, calculated by summing the hours between sunrise and sunset for each day.

March Winds in Johannesburg

March in Johannesburg marks a gentle shift in the winds, with average speeds settling at 2.6 m/s (6 mph). This slight decline from February's 2.8 m/s reflects a transitional phase, as the summer breezes begin to wane and autumn approaches. As the month progresses, these soothing winds create a serene backdrop for the city's vibrant landscape, preparing residents for the upcoming months characterized by stronger gusts, particularly in winter and early spring. Despite the calmness of March, it's evident that Johannesburg's wind patterns are set to pick up, with an increase in velocity expected in the following months, creating a dynamic interplay between seasons.

Average March Wind Speed in Johannesburg

The chart displays monthly wind speed patterns in Johannesburg, with values for each month shown alongside March's data, which is highlighted for easy comparison. It illustrates the average wind speed, offering insights into how March's wind conditions compare to the rest of the year.
JanFebMarAprMayJunJulAugSepOctNovDec3.22.82.6 m/s2.62.72.92.93.93.73.74.23.3
Data source: Johannesburg March wind data, generated using information from the Copernicus Climate Change Service.

How March Weather in Johannesburg Compares to Other Months

Weather in Johannesburg varies notably across the year, with each month offering distinct climate conditions. This page compares March’s weather to other months in Johannesburg, focusing on differences in temperature, rainfall, humidity, and UV levels.

When comparing the weather in March and January, we see some notable differences. March generally features a minimum temperature of 8°C (46°F) and an average of 19°C (66°F), peaking at 30°C (86°F), with an average precipitation of 79 mm (3.1 in) over about 10 days. In contrast, January tends to be slightly warmer, with minimum temperatures around 9°C (48°F), an average temperature of 20°C (69°F), and maximums reaching 33°C (92°F). Additionally, January experiences higher rainfall, totaling 130 mm (5.1 in) over roughly 14 days. Both months exhibit similar humidity levels, hovering around 77-79%. For more details on January's weather specifics, you can visit Johannesburg weather in January.

In comparing the weather between March and February, March tends to be slightly cooler with a minimum temperature of 8°C (46°F) and an average of 19°C (66°F), while February's temperatures range from a minimum of 10°C (51°F) and an average of 20°C (68°F). Both months experience high maximum temperatures, with March peaking at 30°C (86°F) and February reaching up to 31°C (87°F). However, February is significantly wetter, receiving 138 mm (5.4 in) of precipitation over 16 days compared to March's 79 mm (3.1 in) across 10 days. Humidity levels remain consistent at 77% for both months, making for a generally humid climate. For more detailed information, check out Johannesburg weather in February.

March and April present distinct weather characteristics. In March, temperatures range from a minimum of 8°C (46°F) to a maximum of 30°C (86°F), with an average of 19°C (66°F) and a total precipitation of 79 mm (3.1 in) over about ten rainy days. The humidity level sits comfortably at 77%. In contrast, April experiences cooler temperatures, with a minimum of 3°C (38°F) and a maximum of 29°C (85°F), averaging 16°C (61°F). Precipitation decreases to 63 mm (2.5 in), still spread across ten days, and humidity rises slightly to 81%. Overall, April tends to be slightly cooler and less rainy compared to March, while maintaining a higher humidity level. For more detailed information, you can check Johannesburg weather in April.

In March, Johannesburg experiences a greater temperature range, with minimums around 8°C (46°F) and maximums reaching up to 30°C (86°F), accompanied by significant precipitation of 79 mm (3.1 in) over about 10 days. The high humidity at 77% adds to the warmth, making it feel quite muggy at times. In contrast, May brings cooler temperatures, with a minimum of -1°C (30°F) and a maximum of 26°C (78°F), and much less rain, totaling only 13 mm (0.5 in) over just one day. The humidity rises slightly to 82%, which can contribute to a crisp, refreshing atmosphere. For more detailed insights into May weather, you can visit Johannesburg weather in May.

In March, Johannesburg experiences a more varied temperature range, with minimums around 8°C (46°F) and maximums reaching up to 30°C (86°F), resulting in a pleasant average of 19°C (66°F). This month also sees a significant amount of precipitation, with 79 mm (3.1 in) of rainfall over approximately 10 days and a higher humidity level of 77%. In contrast, June brings cooler temperatures, with a minimum of -4°C (24°F) and a maximum of 24°C (76°F), leading to a lower average temperature of 11°C (51°F). The month is characterized by very little rainfall, only 6 mm (0.2 in) over just 1 day, and slightly lower humidity at 73%. For more details, you can check out Johannesburg weather in June.

In Johannesburg, the weather in March contrasts significantly with that in July. March boasts warmer temperatures, ranging from a minimum of 8°C (46°F) to a maximum of 30°C (86°F), and experiences considerable precipitation, accumulating 79 mm (3.1 in) over an average of 10 days. This month also has a relatively high humidity level of 77%.

In stark contrast, July features cooler temperatures with a minimum of -4°C (25°F) and a maximum of 25°C (78°F). Notably, July is much drier, recording only 2 mm (0.1 in) of precipitation without any rainy days, and has a lower humidity level of 71%. For more detailed insights, you can visit Johannesburg weather in July.

March and August display markedly different weather patterns. In March, temperatures range from a minimum of 8°C (46°F) to a maximum of 30°C (86°F), with an average temperature of 19°C (66°F). The month experiences significant precipitation, totaling 79 mm (3.1 in) over approximately 10 days, leading to a high humidity level of 77%. In contrast, August features a cooler climate, with temperatures ranging from a low of -1°C (30°F) to a high of 27°C (80°F), and an average of 14°C (57°F). Markedly drier, August sees only 3 mm (0.1 in) of rain over zero days, accompanied by lower humidity at 68%. For more detailed information, check out Johannesburg weather in August.

March and September present distinct weather patterns, emphasizing the transition from summer to autumn in Johannesburg. In March, temperatures range from a minimum of 8°C (46°F) to a maximum of 30°C (86°F), with an average of 19°C (66°F) and a notable amount of precipitation at 79 mm (3.1 in) over about 10 days, coupled with humidity levels around 77%. In contrast, September experiences cooler temperatures, with minimums dipping to -1°C (31°F) and maximums reaching up to 32°C (91°F), averaging 17°C (64°F). The month sees significantly less rain, totaling only 8 mm (0.3 in) over just 2 days, and a slightly lower humidity level of 74%. For a more detailed look at September's weather conditions, you can visit Johannesburg weather in September.

In March, Johannesburg experiences a wider temperature range, with minimums around 8°C (46°F) and maximums reaching up to 30°C (86°F). The average temperature is a pleasant 19°C (66°F), coupled with relatively high humidity at 77% and about 79 mm of precipitation over 10 days. In contrast, October brings slightly cooler nights with minimum temperatures dropping to 4°C (40°F), while the daytime heat can peak at 33°C (92°F). Despite a similar average temperature of 19°C (66°F), October sees less rainfall with only 63 mm over 8 days and a lower humidity level of 74%. For more details on this month’s weather, visit Johannesburg weather in October.

March and November present distinct contrasts in weather patterns. In March, temperatures range from a minimum of 8°C (46°F) to a maximum of 30°C (86°F), with an average of 19°C (66°F). The month experiences moderate rainfall, with about 79 mm (3.1 in) of precipitation over approximately 10 days, and humidity levels around 77%. In comparison, November sees slightly cooler nights with a minimum temperature of 4°C (40°F) and warmer days, with maximums reaching up to 34°C (93°F) and an average of 20°C (68°F). Precipitation increases to 97 mm (3.8 in) over 13 days, contributing to somewhat higher humidity at 82%. For a more detailed look at November's climate specifics, visit Johannesburg weather in November.

March and December in Johannesburg showcase distinct weather patterns that reflect the transition from summer to late spring. In March, temperatures range from a minimum of 8°C (46°F) to a maximum of 30°C (86°F), with an average temperature of 19°C (66°F). The month sees around 79 mm of precipitation over approximately 10 days, contributing to a humidity level of 77%. In contrast, December experiences slightly milder minimum temperatures at 10°C (50°F) and a higher maximum of 34°C (93°F), with an average temperature of 20°C (69°F). This month is also wetter, with 146 mm of rainfall spread across 19 days, resulting in a higher humidity level of 81%. For more detailed information, check out Johannesburg weather in December.

Compare Johannesburg's Climate with Cities Worldwide

Conclusion: What to Expect From March Weather in Johannesburg

As March rolls in, Johannesburg experiences a delightful transition from the summer heat, characterized by warm days and cooler nights. The average temperatures make it a comfortable time to explore the city, while the increased humidity hints at the approaching autumn. Although precipitation is more frequent this month than in previous ones, it adds a refreshing touch to the landscape rather than dampening spirits. This balance of warmth and occasional rain makes March an inviting time to visit the vibrant city of Johannesburg. For more detailed insights into the city's climate throughout the year, visit Johannesburg Climate.