August Weather in Knysna, South Africa

Last updated: August 31, 2025

In August, Knysna, South Africa experiences a delightful blend of temperatures and weather patterns. With a maximum temperature peaking at 26°C (80°F) and an average low around 13°C (56°F), visitors can enjoy mild and pleasant days, making it an ideal time for outdoor activities. However, the cooler evenings can drop to a minimum of 5°C (42°F), so a light jacket may be wise. The region sees approximately 61 mm (2.4 in) of rainfall over about 9 days, contributing to its lush landscapes, while humidity levels hover around 73%, adding a refreshing moisture to the air. This mid-winter month offers a unique charm, attracting those eager to explore Knysna's breathtaking natural beauty.

August Temperature in Knysna

In August, Knysna experiences a transitional chill as winter begins to fade, with temperatures ranging from a brisk 5°C (42°F) at night to a daytime high of 26°C (80°F). While the average temperature hovers around 13°C (56°F), the contrast with the warmer months is notable; this marks the coldest point in Knysna's year before spring brings a gradual warming trend. As the days grow longer and temperatures begin to rise again, the gentle shift in the weather signals the approach of spring, promising a promising mix of mild days that hint at the vibrant summer awaiting just around the corner.

August Weather in Knysna: Daily Temperature Highs, Lows, and Averages

The chart illustrates August temperature patterns in Knysna, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Knysna, August 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).
JanFebMarAprMayJunJulAugSepOctNovDec696967636058575558616265
Data source: Temperature data for Knysna generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

August Precipitation in Knysna

In August, Knysna experiences a noticeable uptick in precipitation, receiving an average of 61 mm (2.4 in) of rain over 9 days. This marks a shift from the relatively drier months of winter, as July's rainfall measured 41 mm (1.6 in) across just 6 days. The trend illustrates how late winter and early spring in Knysna can be characterized by increased moisture, with August being one of the wetter months leading into the spring season. Following this pattern, September continues to be moist with 59 mm (2.3 in), keeping the region lush and vibrant as it transitions into spring.

August Precipitation Trends in Knysna

The chart displays monthly precipitation patterns in Knysna, with values for each month alongside August’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how August’s conditions compare to those of other months. In Knysna, August typically receives around {2} mm ({3} inches) of precipitation spread over approximately {4} days.
JanFebMarAprMayJunJulAugSepOctNovDec494342263624416160536545
Data source: Precipitation data for August generated using information from the Copernicus Climate Change Service.
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August Humidity in Knysna

In August, Knysna experiences a dip in humidity, averaging a moderate 73%, making it one of the driest months of the year. This slight decrease continues the trend established from the peak of 82% in March, gradually declining over the subsequent months. Following the wetter winter months of June and July, which boast humidity levels of 74% and 76%, respectively, August provides a brief respite before humidity levels begin to rise again in September. This pattern underscores the region's shift from the cooler, more humid winter towards warmer months, reflecting the natural ebb and flow of the local coastal climate.

August Average Humidity in Knysna

This chart illustrates the average monthly humidity levels in Knysna, with August’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In August, average humidity in Knysna is approximately {2}%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec77%79%82%81%77%74%76%73%75%75%75%77%
Data source: Humidity data for August generated using information from the Copernicus Climate Change Service.

August UV Index in Knysna

In August, Knysna experiences a high UV Index of 6, indicating a shift towards stronger sun exposure after the more moderate levels of winter. With a burn time of 25 minutes, it’s essential for residents and visitors to become more vigilant about sun protection. Compared to the lower indices of June and July, when the UV levels hovered at 4, August serves as a reminder that the summer sun is on the horizon. As we transition into spring, this increase in UV intensity is a key trend to watch, and savvy sun seekers should consult the full Knysna UV Index for ongoing insights.

Maximum UV Index Levels in Knysna for August

The chart shows the monthly maximum UV Index (UVI) for Knysna in August, 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 August, the maximum UV index in Knysna typically reaches {2}, which falls under the {3} exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec141311854469111214
Data source: Knysna August 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.

August Sunshine in Knysna

In August, Knysna basks in a delightful 314 hours of sunshine, marking a refreshing transition as the winter months begin to wane. This subtle increase from July's 296 hours hints at the promise of spring, with daylight hours gradually lengthening. As the year progresses, the sun shines brighter, with sunshine reaching its zenith towards the year's end, peaking at an impressive 415 hours in December. The rhythmic shift in sunshine hours not only enhances the beauty of Knysna’s landscapes but also invites locals and visitors alike to revel in outdoor activities, making August a perfect time to experience the charm of this picturesque South African gem.

Monthly Sunshine Duration in Knysna: August Highlighted

The August sunshine duration represents the total number of hours Knysna experiences direct sunlight during the month of August, excluding cloudy or obstructed periods. This chart compares the sunshine duration of August with the other months of the year.
JanFebMarAprMayJunJulAugSepOctNovDec332h350h358h311h298h278h296h314h327h370h385h415h
Data source: Knysna August Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Knysna During August

In Knysna, South Africa, August brings a moderate chance of sunny weather, with 61% likelihood of sunshine. This marks a slight dip from the preceding months of July and June, which experience higher probabilities of clear skies at 69% and 67% respectively. Observing the broader trends, late summer and early autumn months like January and February showcase the highest chances of sun, while spring’s onset in September leads to a notable decline, falling to 42%. Overall, while August may not be the sunniest month, it still holds a respectable chance for those seeking outdoor adventure in this stunning coastal region.

Percentage of Sunny Days in August in Knysna

The chart illustrates the percentage of sunny days in Knysna throughout the year, with August 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 Knysna experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec65%62%51%47%59%67%69%61%42%49%43%41%
Data source: Knysna August chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Knysna in August

In August, Knysna, South Africa enjoys a daylight duration of 10 hours, maintaining the pattern established in July. This period marks a transitional phase as the days begin to lengthen again, foreshadowing the arrival of spring. As the year progresses, daylight subtly increases, reaching 11 hours in September and peaking at 14 hours in January. The gradual shift from shorter winter days to longer summer days highlights the region's seasonal rhythm, inviting both locals and visitors to embrace the changing light and explore the natural beauty of this coastal gem. Whether basking in the warm August sun or anticipating the vibrant days ahead, this dynamic shift provides a captivating backdrop for outdoor adventures and serene moments alike.

Average Daylight Hours in Knysna for August

The chart illustrates the variation in daylight duration in Knysna throughout the year, with August highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec14h 6m13h 17m12h 14m11h 11m10h 19m9h 54m10h 7m10h 53m11h 53m12h 56m13h 53m14h 21m
Data source: Knysna daylight hours, calculated by summing the hours between sunrise and sunset for each day.

August Winds in Knysna

In August, Knysna experiences gentle breezes with an average wind speed of 3.6 m/s (8 mph), marking a slight dip from the more robust winds of July at 4.1 m/s (9 mph). This serene wind pattern is characteristic of the winter months, as the region gradually transitions towards spring. The calmness in August is a continuation of the trend seen in April, where winds fell to their lowest at 2.9 m/s (6 mph), before picking up again in the later months. As the year progresses, October brings a noticeable increase with winds returning to 4.3 m/s (10 mph), highlighting the seasonal shifts in this picturesque coastal town. Ultimately, August offers a tranquil reprieve, wrapping Knysna in a gentle embrace as nature prepares for the seasonal change ahead.

Average August Wind Speed in Knysna

The chart displays monthly wind speed patterns in Knysna, with values for each month shown alongside August's data, which is highlighted for easy comparison. It illustrates the average wind speed, offering insights into how August's wind conditions compare to the rest of the year.
JanFebMarAprMayJunJulAugSepOctNovDec4.43.83.82.93.73.74.13.6 m/s3.84.34.04.1
Data source: Knysna August wind data, generated using information from the Copernicus Climate Change Service.

How August Weather in Knysna Compares to Other Months

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

August and January present notably different weather patterns. In August, temperatures range from a minimum of 5°C (42°F) to a maximum of 26°C (80°F), with an average of 13°C (56°F). This month experiences about 61 mm (2.4 in) of precipitation spread over 9 days, with humidity at 73%. In contrast, January boasts warmer temperatures, with a minimum of 12°C (55°F) and a maximum of 31°C (89°F), leading to an average of 20°C (69°F). Precipitation in January is slightly lower at 49 mm (1.9 in) over 8 days, accompanied by higher humidity at 77%. For more details about the weather in January, you can visit Knysna weather in January.

When comparing the weather in August and February, there are notable differences in temperature and humidity. August experiences cooler temperatures, with an average of 13°C (56°F), while February boasts a warmer average of 20°C (69°F). Additionally, February's maximum temperature peaks at a hot 35°C (94°F), significantly higher than August's maximum of 26°C (80°F). Precipitation levels are relatively moderate in both months, with August receiving 61 mm (2.4 in) and February slightly less at 43 mm (1.7 in). Humidity also remains high in both months, with February slightly more humid at 79% compared to August's 73%. For more details about February weather, you can check out Knysna weather in February.

In comparing August and March weather, August presents a cooler climate with average temperatures ranging from a minimum of 5°C (42°F) to a maximum of 26°C (80°F), alongside a relatively high humidity level of 73%. The month experiences a total of 61 mm (2.4 in) of precipitation over approximately 9 days. In contrast, March tends to be warmer with minimum temperatures of 11°C (52°F) and maximums reaching up to 31°C (88°F), averaging around 19°C (67°F). Precipitation in March is lower at 42 mm (1.6 in) over 8 days, but the humidity is slightly higher at 82%. For more detailed information, visit Knysna weather in March.

When comparing the weather in August and April, notable differences emerge. August experiences a cooler temperature range with a minimum of 5°C (42°F) and a maximum of 26°C (80°F), averaging around 13°C (56°F). In contrast, April is generally warmer, showcasing a minimum of 9°C (49°F) and a peak of 31°C (88°F), with an average temperature of 17°C (63°F). Additionally, precipitation levels differ, with August receiving 61 mm (2.4 inches) over about 9 days, while April has lighter rainfall at 26 mm (1.0 inch) across 7 days. Humidity is slightly higher in April at 81% compared to August's 73%. For more detailed information, you can check Knysna weather in April.

When comparing the weather in August and May, we can observe several notable differences. August typically experiences cooler temperatures, with a minimum of 5°C (42°F) and an average of 13°C (56°F), while May is warmer, starting at a minimum of 8°C (46°F) and averaging 16°C (61°F). Despite having a higher maximum temperature of 28°C (82°F), May sees slightly lower precipitation levels at 36 mm (1.4 in) over 6 days compared to August's 61 mm (2.4 in) across 9 days. Additionally, humidity levels are relatively high in both months, with August at 73% and May slightly higher at 77%. For detailed insights on May weather patterns, you can refer to Knysna weather in May.

When comparing the weather in August and June, August tends to be slightly cooler with average temperatures ranging from a minimum of 5°C (42°F) to a maximum of 26°C (80°F), while June experiences slightly warmer temperatures with a minimum of 6°C (43°F) and a maximum of 27°C (81°F). Precipitation is more frequent in August, occurring over 9 days and totaling 61 mm (2.4 in), compared to June's 6 days of rainfall totaling 24 mm (1.0 in). Humidity levels are comparable, with August at 73% and June slightly higher at 74%. For more detailed insights on June weather, you can check this link: Knysna weather in June.

In comparing the weather of July and August, we find that both months share similar maximum temperatures, hovering around 26°C (79°F to 80°F). However, August experiences slightly cooler minimum temperatures, averaging 5°C (42°F) compared to July's 6°C (43°F). Additionally, August sees a notable increase in precipitation, with 61 mm (2.4 in) over 9 days, while July has only 41 mm (1.6 in) across 6 days. Humidity levels are also slightly lower in August at 73%, compared to July's 76%. For more detailed information, you can check out Knysna weather in July.

In comparing the weather between August and September, both months experience mild temperatures, but September sees a notable increase in maximum temperature, reaching up to 33°C (91°F) compared to August's peak of 26°C (80°F). The average temperature also rises, with September averaging 15°C (59°F) versus August's 13°C (56°F). Precipitation levels are quite similar, with August receiving 61 mm (2.4 in) and September slightly less at 59 mm (2.3 in), both spread over nine days. Humidity remains relatively consistent, with August at 73% and September slightly higher at 75%. For more detailed insights, you can check Knysna weather in September.

August and October present distinct weather patterns, reflecting the transition from winter to spring in many regions. In August, temperatures range from a cooler minimum of 5°C (42°F) to a pleasant maximum of 26°C (80°F), with an average of 13°C (56°F). Precipitation is relatively high at 61 mm (2.4 in) over 9 days, along with a humidity level of 73%. In contrast, October sees a slight rise in temperatures, with a minimum of 9°C (48°F), an average of 16°C (61°F), and a higher maximum of 33°C (91°F). Although precipitation drops slightly to 53 mm (2.1 in) also over 9 days, humidity increases to 75%, indicating a more humid atmosphere. For more specific insights into October's climate, you can check this link: Knysna weather in October.

In August, Knysna experiences cooler temperatures with a minimum of 5°C (42°F) and an average of 13°C (56°F), reaching a maximum of 26°C (80°F). This month also sees a total precipitation of 61 mm (2.4 in) over 9 days, accompanied by a humidity level of 73%. In contrast, November brings milder weather, with a minimum temperature of 8°C (47°F), an average of 17°C (63°F), and a maximum of 31°C (88°F). The precipitation slightly increases to 65 mm (2.6 in) over the same number of rainy days, while humidity remains relatively stable at 75%. For more detailed insights, check out Knysna weather in November.

August and December in Knysna showcase distinct weather patterns. August experiences a cooler climate with temperatures ranging from a minimum of 5°C (42°F) to a maximum of 26°C (80°F), averaging around 13°C (56°F). The month sees about 61 mm (2.4 in) of precipitation over nine days and has a humidity level of 73%. In contrast, December is warmer, with temperatures ranging from a minimum of 11°C (52°F) to a maximum of 30°C (87°F), averaging 19°C (66°F). It experiences less precipitation, at 45 mm (1.8 in) also over nine days, with slightly higher humidity at 77%. This shift in weather highlights the seasonal transition from the coolness of winter in August to the warmth of summer in December. For more details, you can check Knysna weather in December.

Compare Knysna's Climate with Cities Worldwide

Conclusion: What to Expect From August Weather in Knysna

In August, Knysna experiences a refreshing transition from the cooler depths of winter to the early hints of spring. With temperatures averaging 13°C, days are comfortably mild, yet evenings can be brisk, dipping to a chilly 5°C. Unlike the warmer summer months, August is characterized by a higher chance of rain, receiving about 61 mm over approximately 9 days. This month boasts a humidity level of 73%, contributing to a crisp, invigorating air that is perfect for exploring the lush landscapes. For more insights into how August weather compares to the rest of the year, visit Knysna Climate.