September Weather in Calitzdorp, South Africa

Last updated: August 31, 2025

September in Calitzdorp, South Africa, presents a dynamic climate marked by notable temperature fluctuations. With a maximum of 36°C (97°F) and an average of 15°C (60°F), the days can be scorchingly warm, while nights may dip to a refreshing 2°C (35°F). The month sees about 30 mm (1.2 in) of rainfall spread across 5 days, contributing to a humidity level of 74%. This combination of heat and moisture creates a unique atmosphere that characterizes the transition from winter to spring, making September a vibrant and engaging time to explore the region.

September Temperature in Calitzdorp

In September, Calitzdorp begins to shake off the chill of winter, showcasing a subtle warming trend that hints at the approaching spring. Minimum temperatures rise modestly to 2°C (35°F), while average highs reach up to 36°C (97°F), marking a significant escalation from the previous months. The average temperature sits at a comfortable 15°C (60°F), striking a balance that invites outdoor adventures amidst the backdrop of gentle blooms. This transitional month reveals a promise of warmth ahead, as the region gears up for the hotter months, with hints of September's lingering mildness providing a pleasant respite before the sun fully asserts itself.

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

The chart illustrates September temperature patterns in Calitzdorp, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Calitzdorp, 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).
JanFebMarAprMayJunJulAugSepOctNovDec737370656055545459646669
Data source: Temperature data for Calitzdorp 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 Calitzdorp

September in Calitzdorp marks a subtle shift as it welcomes a modest rainfall of 30 mm (1.2 in), falling over approximately 5 days. This month stands out as a transition period, showing a slight increase compared to the drier months of winter, with precipitation gradually ramping up as the region approaches the summer months. Following August's 25 mm, the uptick in rainfall hints at a budding promise for spring's rejuvenation. As the rainfall becomes more frequent and substantial, it paves the way for vibrant vegetation and agricultural activities, setting a lively tone for the months ahead. Overall, September acts as a key month of preparation for the bounteous rains of late spring and early summer.

September Precipitation Trends in Calitzdorp

The chart displays monthly precipitation patterns in Calitzdorp, 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 Calitzdorp, September typically receives around {2} mm ({3} inches) of precipitation spread over approximately {4} days.
JanFebMarAprMayJunJulAugSepOctNovDec392332251812182530314934
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

September Humidity in Calitzdorp

As September arrives in Calitzdorp, South Africa, the humidity hovers around a comfortable 74%. This marks a noteworthy dip from the peak humidity levels of the preceding months, particularly May and June, which consistently reached 82%. Following the summer months of January and February, where humidity was relatively higher at 68% and 66% respectively, September transitions towards slightly drier conditions leading into spring. This trend suggests a gradual easing of the humid air that characterizes the winter, setting the stage for the drier months ahead in October and November. Overall, September signifies a pivotal shift, balancing the lingering humidity of winter with the approaching freshness of spring.

September Average Humidity in Calitzdorp

This chart illustrates the average monthly humidity levels in Calitzdorp, 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 Calitzdorp is approximately {2}%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec68%66%76%79%82%82%80%74%74%72%63%63%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Calitzdorp

As September rolls into Calitzdorp, South Africa, residents and visitors can expect a very high UV Index of 9, indicating a significant need for sun protection during outdoor activities. This month’s UV levels highlight a gradual decrease from the extreme exposure seen in the earlier months of the year, specifically from January through March when the index peaked at a staggering 14. With a burn time of just 15 minutes in September, it’s crucial to take precautions similar to those in April, despite a sporadic increase in UV intensity during summer months. As the seasons transition, adhering to protective measures remains essential. For more information on UV trends through the year, explore the Calitzdorp UV Index.

Maximum UV Index Levels in Calitzdorp for September

The chart shows the monthly maximum UV Index (UVI) for Calitzdorp 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 Calitzdorp typically reaches {2}, which falls under the {3} exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec141311854469111315
Data source: Calitzdorp 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 Calitzdorp

September in Calitzdorp ushers in a delightful resurgence of sunshine, boasting 330 hours of glorious daylight. This month marks a slight uptick from the previous August, which enjoyed 316 hours. It's a refreshing prelude to the bountiful daylight that bursts forth in October, where the hours soar to 370. As we transition from the cooler winter months, the gradual increase in sunshine reflects the region's rhythmic pattern of seasonal warmth, setting the stage for an exuberant spring. With these brightening days, September offers a perfect opportunity for outdoor adventures, wine tastings, and savoring the vibrant landscapes of this charming South African town.

Monthly Sunshine Duration in Calitzdorp: September Highlighted

The September sunshine duration represents the total number of hours Calitzdorp 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.
JanFebMarAprMayJunJulAugSepOctNovDec328h355h359h313h301h281h300h316h330h370h388h419h
Data source: Calitzdorp September Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Calitzdorp During September

In September, Calitzdorp begins to transition from the cooler winter months, yet the likelihood of sunny weather dips to 45%. This marks a noticeable decline from the bright summer days of January (69%) and July (73%), as well as contrasting sharply with the sunnier spells of late winter in July and August. While the sun still makes an appearance, the month’s cooler temperatures suggest that September is a time of change rather than the full embrace of summer. As the community prepares for the warmer months ahead, the fluctuating sunshine serves as a gentle reminder of nature’s rhythm in this charming South African town.

Percentage of Sunny Days in September in Calitzdorp

The chart illustrates the percentage of sunny days in Calitzdorp 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 Calitzdorp experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec69%67%50%50%60%68%73%61%45%49%47%40%
Data source: Calitzdorp September chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Calitzdorp in September

As the seasons transition in Calitzdorp, South Africa, September marks a noticeable shift with 11 hours of daylight, signaling the commencement of longer days following the winter months. This month serves as a bridge between the shorter days of winter and the lengthy, sun-soaked days of summer. After a drop to 9 hours in June, daylight gradually increased during the following months, hinting at the rejuvenating warmth of spring. By October, daylight extends to 12 hours, paving the way for the vibrant energy of the summer months that follow. This gentle increase in daylight not only enhances the natural beauty of the region but also invites both locals and visitors to embrace the outdoors as the days start to feel more abundant and inviting.

Average Daylight Hours in Calitzdorp for September

The chart illustrates the variation in daylight duration in Calitzdorp throughout the year, with September highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec14h 4m13h 16m12h 14m11h 12m10h 21m9h 56m10h 10m10h 54m11h 53m12h 55m13h 50m14h 19m
Data source: Calitzdorp daylight hours, calculated by summing the hours between sunrise and sunset for each day.

September Winds in Calitzdorp

As September arrives in Calitzdorp, the gentle winds start to weave their magic, blowing at an average speed of 2.2 m/s (5 mph). This subtle shift marks a return to the breezy conditions typical of early spring, following a slightly calmer August. Throughout the year, wind speeds in Calitzdorp display a gradual ebb and flow, with the most tranquil months occurring in the heart of autumn when averages dip to 1.8 m/s (4 mph) in April. Notably, the wind picks up slightly again from October to November, settling back around 2.4 m/s (5 mph). The evolving patterns of wind not only enhance the region's charm but also influence the rich vineyards that thrive in this unique climate, creating a picturesque backdrop for both nature enthusiasts and wine aficionados alike.

Average September Wind Speed in Calitzdorp

The chart displays monthly wind speed patterns in Calitzdorp, 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.
JanFebMarAprMayJunJulAugSepOctNovDec2.62.42.21.82.02.42.42.02.2 m/s2.42.42.3
Data source: Calitzdorp September wind data, generated using information from the Copernicus Climate Change Service.

How September Weather in Calitzdorp Compares to Other Months

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

In comparing the weather of September and January, notable differences emerge in both temperature and humidity. September experiences a wider temperature range, with minimums of 2°C (35°F) and maximums reaching up to 36°C (97°F), while the average temperature settles at a comfortable 15°C (60°F). In contrast, January showcases much higher temperatures, with lows around 10°C (51°F) and highs soaring to 43°C (110°F), resulting in an average temperature of 23°C (73°F). Precipitation is slightly higher in January at 39 mm (1.5 in) over 6 days, compared to September's 30 mm (1.2 in) over 5 days. Interestingly, January experiences lower humidity levels at 68% versus September's 74%, indicating a drier heat during the peak of summer. For a more detailed look at January weather, please visit Calitzdorp weather in January.

When comparing the weather in September and February, it’s clear that February tends to be warmer and more humid. September experiences a wider temperature range, with lows of 2°C (35°F) and highs reaching up to 36°C (97°F), while February has minimum temperatures around 10°C (50°F) and maximums peaking at 41°C (105°F). Additionally, September sees a bit more precipitation at 30 mm (1.2 in) over about 5 days, compared to February’s 23 mm (0.9 in) over the same number of days. However, February's humidity is slightly lower at 66% compared to September's 74%. For a more detailed look at February weather, you can visit Calitzdorp weather in February.

When comparing the weather in September and March, notable differences emerge in both temperature and humidity. September sees a minimum temperature of 2°C (35°F) and an average of 15°C (60°F), with a maximum high reaching 36°C (97°F). In contrast, March starts off warmer with a minimum of 9°C (49°F) and an average of 21°C (70°F), peaking at an impressive 40°C (105°F). Precipitation levels are similar, with September averaging 30 mm (1.2 in) over 5 days, while March sees 32 mm (1.3 in) spread across 6 days. The humidity levels are also closely matched, with September at 74% and March slightly higher at 76%. For a more detailed look at March weather, visit Calitzdorp weather in March.

In comparing the weather of September and April, September typically presents a wider temperature range, with minimums dipping to 2°C (35°F) and maximums soaring up to 36°C (97°F). In contrast, April tends to have slightly warmer minimums at 6°C (42°F) and averages of 18°C (65°F), culminating in higher maximum temperatures of 37°C (99°F). Both months experience comparable levels of precipitation, with September receiving 30 mm (1.2 inches) and April recording 25 mm (1.0 inch) across five rainy days. However, April's increased humidity at 79% compared to September's 74% contributes to a more muggy feel. For a closer look at the specifics of April’s climate, check out Calitzdorp weather in April.

September and May present distinct weather patterns, though they share some similarities in temperature ranges. September typically experiences a wider temperature variance, with a minimum of 2°C (35°F) and a maximum of 36°C (97°F), resulting in an average temperature of 15°C (60°F). In contrast, May has a slightly higher average temperature of 16°C (60°F) and a maximum of 32°C (91°F). Precipitation is more abundant in September, with 30 mm (1.2 in) over 5 days, compared to May's 18 mm (0.7 in) on the same number of days. Additionally, September's humidity stands at 74%, while May is a bit more humid at 82%. For more detailed insights, check out Calitzdorp weather in May.

When comparing the weather in September to that of June, we see a considerable difference in temperatures and precipitation. September experiences a broader temperature range, with minimums around 2°C (35°F) and maximums peaking at 36°C (97°F), resulting in a much warmer average of 15°C (60°F). In contrast, June has cooler temperatures, with a minimum of 0°C (31°F) and a maximum of 30°C (86°F), leading to an average of 13°C (56°F). Additionally, September has slightly higher precipitation levels, totaling 30 mm (1.2 in) over about 5 days, whereas June sees only 11 mm (0.5 in) over 4 days. Humidity is also higher in June at 82%, compared to September's 74%. For a detailed look at the weather in June, you can visit Calitzdorp weather in June.

When comparing September and July weather, September tends to be warmer with an average temperature of 15°C (60°F), compared to July's average of 12°C (54°F). The maximum temperature in September can reach up to 36°C (97°F), while July's maximum is much cooler at 29°C (84°F). Despite September having slightly more precipitation at 30 mm over 5 days compared to July's 18 mm over 4 days, July's higher humidity at 80% versus September's 74% contributes to its cooler feel. For more detailed insights on July weather, check out Calitzdorp weather in July.

In comparing the weather conditions of September and August, September experiences a wider temperature range, with minimums reaching 2°C (35°F) and maximums soaring up to 36°C (97°F), while August has milder temperatures, peaking at 31°C (88°F) and a minimum of 0°C (32°F). The average temperature in September is notably higher at 15°C (60°F) compared to August's average of 12°C (54°F). Precipitation remains relatively similar, with September receiving 30 mm (1.2 in) over 5 days and August slightly less at 25 mm (1.0 in) across 6 days. Both months share the same humidity level of 74%, contributing to the overall climate feel. For more detailed insights into August weather, you can check Calitzdorp weather in August.

September and October exhibit a continuation of warm weather, though October tends to be slightly warmer overall. In September, temperatures range from a low of 2°C (35°F) to a high of 36°C (97°F), with an average temperature of 15°C (60°F). In contrast, October sees a minimum temperature of 3°C (38°F) and a maximum of 40°C (105°F), with an average of 18°C (64°F). Both months receive similar precipitation levels of 30-31 mm (1.2 in) across about five days, and humidity remains relatively consistent at 74% in September and 72% in October. For more details on October weather, visit Calitzdorp weather in October.

September and November exhibit contrasting weather patterns in terms of temperature and precipitation. September experiences a broader temperature range, with minimums dropping to 2°C (35°F) and maximums peaking at 36°C (97°F), while November sees milder minimums at 6°C (43°F) and a slightly higher average temperature of 19°C (66°F), with maximums soaring to 40°C (104°F). Additionally, November is characterized by increased precipitation, with 49 mm (1.9 in) falling over 8 days compared to September's 30 mm (1.2 in) over just 5 days. Notably, the humidity is higher in September at 74%, while November enjoys a drier atmosphere with 63% humidity. For more specific details about November weather, you can visit Calitzdorp weather in November.

In comparing the weather between September and December, September experiences a wider range of temperatures, with a minimum of 2°C (35°F) and a maximum of 36°C (97°F), averaging around 15°C (60°F). The humidity is relatively high at 74%, along with a total precipitation of 30 mm (1.2 in) over 5 days. Conversely, December boasts a milder minimum temperature of 10°C (49°F) and a significantly higher maximum of 42°C (108°F), averaging 21°C (70°F). This month sees slightly more precipitation at 33 mm (1.3 in) over 6 days, but with lower humidity at 63%. For a closer look at December's weather specifics, you can check Calitzdorp weather in December.

Compare Calitzdorp's Climate with Cities Worldwide

Conclusion: What to Expect From September Weather in Calitzdorp

September in Calitzdorp marks a distinct transition as summer approaches, characterized by higher temperatures compared to the cooler winter months. With the maximum soaring to a significant 36°C, the region welcomes a refreshing warmth that contrasts sharply with the previous chill. Additionally, although this month sees an increase in humidity at approximately 74%, it still maintains its dry climate reputation. While precipitation is moderate, with rainfall occurring on around five days, the overall dryness remains a hallmark of Calitzdorp's weather patterns. For a detailed perspective on how these September conditions compare to other months, check out the comprehensive details at Calitzdorp Climate.