September Weather in Robertson, South Africa

Last updated: August 31, 2025

In September, Robertson, South Africa, experiences a notable range of temperatures, with a maximum soaring to 35°C (95°F) and a chilling minimum dropping to 1°C (33°F). The average temperature hovers around a mild 14°C (57°F), making it a transitional month. This period sees a total precipitation of 25 mm (1.0 in) spread across 6 days, contributing to the region's lush landscapes. With humidity levels at 74%, the air carries a crisp freshness that invigorates the senses, making September an intriguing time to explore this vibrant locale.

September Temperature in Robertson

In September, Robertson, South Africa, begins to shake off the chill of winter, with temperatures gradually warming up. The month features a minimum of 1°C (33°F), reflecting the tail end of the cold season, while the average temperature reaches a comfortable 14°C (57°F). The daytime heats up significantly, with a maximum of 35°C (95°F), hinting at the approaching spring and summer months. This upward trend in temperatures is a welcome shift, showcasing a steady climb from the colder averages of July and August. As September unfolds, the region not only welcomes a rise in warmth but also the promise of vibrant landscapes awakening from their winter slumber.

September Weather in Robertson: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Robertson, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Robertson, September 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).
JanFebMarAprMayJunJulAugSepOctNovDec717268635854515157626468
Data source: Temperature data for Robertson 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.

September Precipitation in Robertson

In September, Robertson, South Africa experiences a moderate precipitation amount of 25 mm (1.0 in), falling over approximately six days. This marks a slight decrease compared to the previous month, August, which saw 34 mm (1.3 in). The overall trend for the months leading up to September shows that rainfall fluctuates between 16 mm to 39 mm, with the late spring months of November and March typically bringing the highest amounts. Despite the dip in precipitation during September, the consistent rainfall patterns earlier in the year highlight the region's relatively stable climate, providing a refreshing transition into the warmer months ahead.

September Precipitation Trends in Robertson

The chart displays monthly precipitation patterns in Robertson, with values for each month alongside September’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how September’s conditions compare to those of other months. In Robertson, September typically receives around {2} mm ({3} inches) of precipitation spread over approximately {4} days.
JanFebMarAprMayJunJulAugSepOctNovDec311737162728373425283925
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

September Humidity in Robertson

In September, Robertson, South Africa, experiences a comfortable humidity level of 74%, marking a gradual decline from the peak of 82% seen in the cooler months of June and July. As the region transitions from winter to spring, humidity levels begin to ease, reflecting a shift toward drier conditions that will continue into October. This decrease from summer's high humidity is typical, as the area generally experiences its highest humidity levels from late autumn through winter, peaking in mid-year. The steady decline in humidity from September to December hints at the anticipated warm, dry summer months ahead, inviting locals and visitors alike to enjoy the vibrant landscapes of Robertson.

September Average Humidity in Robertson

This chart illustrates the average monthly humidity levels in Robertson, with September’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In September, average humidity in Robertson is approximately {2}%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec62%62%70%72%77%82%82%78%74%67%61%60%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Robertson

In September, Robertson, South Africa experiences a UV Index of 9, categorizing the exposure as very high with a burn time of approximately 15 minutes. This marks a notable increase from the more moderate conditions of winter, where previous months (June and July) recorded a UV Index of only 4. As spring approaches, the UV Index rises, highlighting an important trend towards higher sun exposure. This change in UV levels leads into the higher peaks found later in the year, reinforcing the need for sun protection as summer approaches. For more information on UV levels throughout the year, visit Robertson UV Index.

Maximum UV Index Levels in Robertson for September

The chart shows the monthly maximum UV Index (UVI) for Robertson in September, 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 September, the maximum UV index in Robertson typically reaches {2}, which falls under the {3} exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec151411854469121315
Data source: Robertson September 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.

September Sunshine in Robertson

As September settles in Robertson, South Africa, the sun shines with 332 hours of brilliant light, marking a lovely transition into spring. This glimpse of sunshine is a warm invitation to outdoor enthusiasts, positioning September as a month of vibrant activity, just shy of the summer peak. Following the cooler winter months, which saw significantly less sunlight—peaking at only 276 hours in June—the return to longer days is a welcomed delight. September’s luminous hours foreshadow an exciting October, anticipated to bask in 374 hours of sunshine, leading steadily toward summer's grand finale. Robinson’s daylight dance illustrates a delightful progression, as the sun's embrace grows stronger, paving the way for the warm, sun-filled days ahead.

Monthly Sunshine Duration in Robertson: September Highlighted

The September sunshine duration represents the total number of hours Robertson experiences direct sunlight during the month of September, excluding cloudy or obstructed periods. This chart compares the sunshine duration of September with the other months of the year.
JanFebMarAprMayJunJulAugSepOctNovDec336h359h358h315h297h276h292h313h332h374h392h421h
Data source: Robertson September Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Robertson During September

In Robertson, South Africa, the likelihood of sunny weather in September sees a notable dip to 51%, mirroring the trend from the previous month and October. This mid-season transition marks a shift from the peak sunny days experienced in the height of summer, with January and February boasting impressive sun chances of 74% and 73%, respectively. As the year progresses into autumn, sunshine begins to wane, highlighted by April's 51% and November's further slight decrease to 48%. Overall, September reflects a cautious invitation to enjoy the outdoors, but with an increasing chance of cloud cover as the season changes.

Percentage of Sunny Days in September in Robertson

The chart illustrates the percentage of sunny days in Robertson throughout the year, with September 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 Robertson experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec74%73%55%51%60%65%66%57%51%51%48%42%
Data source: Robertson September chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Robertson in September

As September arrives in Robertson, South Africa, daylight begins its steady transition from the shorter, cozy hours of winter into the longer, brighter days of spring. With 11 hours of daylight, September marks a turning point, where the daylight starts to gradually lengthen after the deeper darkness of June and July, both of which offer only 9 to 10 hours. This shift not only heralds the arrival of warmer temperatures but also invites a renewed vibrancy in nature. Following September, the days continue to expand, reaching their peak light in December with a remarkable 14 hours. This seasonal progression reflects a rhythmic cycle, hinting at the joyful awakening of springtime and the bursting energy of the coming months.

Average Daylight Hours in Robertson for September

The chart illustrates the variation in daylight duration in Robertson throughout the year, with September highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec14h 5m13h 16m12h 14m11h 12m10h 20m9h 55m10h 8m10h 53m11h 53m12h 56m13h 52m14h 20m
Data source: Robertson daylight hours, calculated by summing the hours between sunrise and sunset for each day.

September Winds in Robertson

As September rolls into Robertson, South Africa, the average wind speed settles at a gentle 2.4 m/s (5 mph). This marks a slight uptick from the quieter summer months, reflecting a subtle transition in the region's weather patterns. Overall, the wind trends show a gradual increase from the calm, balmy days of April and May, which hover around 2.0 m/s (5 mph). As we move towards October, the winds are expected to pick up again, reaching 2.7 m/s (6 mph). This ebb and flow sets the stage for a dynamic shift in the landscape, invigorating the crisp air of early spring and ushering in the sun-kissed days to come.

Average September Wind Speed in Robertson

The chart displays monthly wind speed patterns in Robertson, with values for each month shown alongside September's data, which is highlighted for easy comparison. It illustrates the average wind speed, offering insights into how September's wind conditions compare to the rest of the year.
JanFebMarAprMayJunJulAugSepOctNovDec2.92.72.42.02.12.52.42.22.4 m/s2.72.82.6
Data source: Robertson September wind data, generated using information from the Copernicus Climate Change Service.

How September Weather in Robertson Compares to Other Months

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

Comparing the weather between September and January reveals notable differences in temperature and humidity. In September, temperatures range from a chilly 1°C (33°F) at night to a warm 35°C (95°F) during the day, with an average of 14°C (57°F). The month sees about 25 mm (1.0 in) of precipitation over six days, accompanied by relatively high humidity at 74%. In contrast, January experiences milder nighttime temperatures starting at 10°C (50°F), rising to an average of 22°C (71°F) and peaking at a scorching 42°C (107°F). The rainfall slightly increases to 31 mm (1.2 in) over five days, but humidity drops to a more comfortable 62%. For further details on the January climate, you can visit Robertson weather in January.

September and February present distinct contrasts in weather conditions. September experiences a broader temperature range, with minimums dipping to 1°C (33°F) and maximums soaring to 35°C (95°F), while averaging around 14°C (57°F). In contrast, February boasts milder nights with minimum temperatures of 10°C (50°F) and higher averages of 22°C (72°F), reaching up to 38°C (101°F) during the day. Although September is slightly wetter with 25 mm of precipitation across 6 days, February is not far behind, recording 17 mm over 5 days but with lower humidity at 62%. For more information, check out Robertson weather in February.

September and March showcase distinct weather patterns. In September, temperatures range from a minimum of 1°C (33°F) to a maximum of 35°C (95°F), with an average of 14°C (57°F). The month receives about 25 mm (1.0 in) of precipitation over approximately 6 days, accompanied by a humidity level of 74%. In contrast, March experiences milder conditions, with temperatures ranging from 8°C (46°F) to a peak of 37°C (99°F) and an average temperature of 20°C (68°F). This month sees increased precipitation of 37 mm (1.5 in) over 7 days, and slightly lower humidity at 70%. For more detailed information about weather conditions in March, you can visit Robertson weather in March.

When comparing the weather in September and April, notable differences in temperature and precipitation can be observed. September experiences a wider temperature range, with minimums dipping to 1°C (33°F) and maximums reaching up to 35°C (95°F), while April's temperatures are slightly higher, with minimums around 4°C (40°F) and maximums peaking at 36°C (98°F). Both months exhibit relatively low precipitation, with September receiving 25 mm (1.0 in) over six days and April seeing 16 mm (0.6 in) over five days, indicating a similarly dry climate. Humidity levels are also comparable, with September at 74% and April at 72%. For a closer look at what to expect during April, you can check out Robertson weather in April.

In comparing the weather of September and May, we observe notable differences in temperature and precipitation patterns. September experiences a wider temperature range with minimums dropping to 1°C (33°F) and maximums soaring up to 35°C (95°F), while May offers a slightly milder climate, with temperatures ranging from a minimum of 2°C (36°F) to a maximum of 30°C (87°F). Although both months have similar average temperatures—14°C (57°F) in September and 15°C (59°F) in May—the humidity in September is slightly lower at 74%, compared to 77% in May. Precipitation is comparable in both months, with September receiving 25 mm (1.0 in) over 6 days and May slightly more at 27 mm (1.1 in) over just 4 days. For more detailed information on May weather, you can visit Robertson weather in May.

In comparing the weather between September and June, September tends to be much warmer with maximum temperatures soaring up to 35°C (95°F), while June peaks at a cooler 27°C (81°F). The average temperature in September is higher at 14°C (57°F) compared to June's 12°C (54°F). However, both months share a similar level of precipitation, with September receiving about 25 mm (1.0 in) and June slightly more at 28 mm (1.1 in), both over six rainy days. Humidity levels are also higher in June at 82%, compared to September's 74%. For more details on June weather specifics, you can check Robertson weather in June.

When comparing the weather in September and July, a notable difference is seen in the temperature ranges. September experiences a more varied climate with minimum temperatures at 1°C (33°F) and maximum temperatures soaring up to 35°C (95°F), while July has lower temperatures, ranging from a minimum of -2°C (29°F) to a maximum of 29°C (84°F). Precipitation is also more pronounced in July, with 37 mm (1.5 in) recorded over six days compared to September's 25 mm (1.0 in) on six days as well. Additionally, humidity levels are slightly higher in July at 82%, compared to September’s 74%, indicating a more humid atmosphere during the mid-year month. For further insights on the specific weather patterns in July, you can explore Robertson weather in July.

September weather in Robertson shows a notable increase in temperatures compared to August, with minimums rising from -1°C (31°F) to 1°C (33°F) and average temperatures climbing from 11°C (52°F) to 14°C (57°F). The maximum temperature also sees a significant jump, reaching up to 35°C (95°F) in September, compared to a maximum of 29°C (84°F) in August. Despite September experiencing slightly less precipitation at 25 mm (1.0 in) versus August's 34 mm (1.3 in), humidity levels remain comparable, with September at 74% and August at 78%. For more details on August conditions, check out Robertson weather in August.

September and October exhibit noticeable changes in weather patterns. September generally experiences cooler temperatures, with a minimum of 1°C and an average of 14°C, but can reach a maximum of 35°C. In contrast, October shows a slight increase, with minimum temperatures rising to 3°C and an average of 17°C, peaking at a higher maximum of 37°C. Precipitation levels are relatively similar between the two months, with September receiving 25 mm and October slightly more at 28 mm; both months also experience six days of rainfall. Notably, October's humidity drops to 67%, making it feel a bit drier compared to the 74% humidity in September. For more detailed insights, you can check Robertson weather in October.

September's weather is characterized by a significant temperature range, with minimums dipping to 1°C (33°F) and maximums reaching up to 35°C (95°F), resulting in an average of 14°C (57°F). The month experiences approximately 25 mm (1.0 in) of precipitation over six days, accompanied by a relatively high humidity level of 74%. In contrast, November brings milder minimum temperatures starting at 5°C (41°F) and a slightly higher average of 18°C (65°F), with maximum temperatures peaking at 37°C (98°F). Precipitation in November increases to 39 mm (1.5 in) over the same six-day span but sees humidity decrease to 61%. For more detailed information about the weather during this month, you can check Robertson weather in November.

In September, temperatures in Robertson range from a cool 1°C (33°F) at night to a warm 35°C (95°F) during the day, with an average of 14°C (57°F). The month experiences about 25 mm (1.0 in) of precipitation spread over 6 days, contributing to a relatively high humidity level of 74%. In contrast, December sees milder nighttime lows of 9°C (48°F) and daytime highs reaching up to 40°C (103°F), with an average temperature of 20°C (68°F). The total precipitation remains the same at 25 mm (1.0 in), but it falls over just 5 days, resulting in lower humidity levels of 60%. For more detailed information, visit Robertson weather in December.

Compare Robertson's Climate with Cities Worldwide

Conclusion: What to Expect From September Weather in Robertson

As September unfolds in Robertson, it marks a striking transition from the harshness of winter to the welcoming embrace of spring. The temperature begins to rise, inviting warmer days while still influenced by chilly nights, providing a diverse experience unlike the more stable temperatures of the peak summer months. While rainfall is modest with a handful of wetter days, the humidity levels remain notable, contributing to the vibrant bloom of flora in the region. This month serves as a bridge, blending seasonal contrasts that enrich the local tapestry, making it an ideal time to explore the beauty of the area. For a deeper dive into the weather patterns that shape life in this enchanting locale, visit Robertson Climate.