Last updated: August 31, 2025
In May, Knysna, South Africa experiences a delightful blend of mild temperatures and lush greenery. With maximums reaching 28°C (82°F) and average temperatures around 16°C (61°F), visitors can enjoy pleasantly warm days, while the evenings cool down to a comfortable 8°C (46°F). During this month, the region sees a total precipitation of 36 mm (1.4 in) across approximately 6 days, contributing to its vibrant landscape. Humidity levels hover around 77%, creating a refreshing atmosphere ideal for outdoor adventures and exploration of Knysna's stunning natural beauty.
In May, Knysna experiences a noticeable transition as temperatures dip, signaling the onset of winter. The minimum temperature of 8°C (46°F) provides a crisp start to the day, while the average settles at a comfortable 16°C (61°F), ideal for outdoor exploration. Daytime highs can reach a pleasant 28°C (82°F), making it one of the warmer months before the chill of winter fully sets in. Compared to the preceding month of April, where the average was slightly higher at 17°C (63°F), May showcases a slight reduction in warmth, yet still remains inviting for both locals and visitors. This blend of mild temps creates an excellent opportunity for enjoying all that this stunning coastal town has to offer, from scenic hikes to leisurely walks by the lagoon.
In May, Knysna experiences a moderate precipitation total of 36 mm (1.4 in), following a trend of gradually increasing rainfall from the drier months of late summer and early autumn. This month typically sees about 6 days of rain, marking a slight uptick as the region transitions into the cooler, wetter winter months ahead. The consistent pattern suggests that May is a balancing point between the diminishing showers of April and the increased rainfall expected in the following months, as illustrated by June’s 24 mm and the subsequent spike in August with 61 mm (2.4 in). Rainfall during this period supports the lush greenery and biodiversity Knysna is renowned for, making it a picturesque time to visit despite the occasional shower.
In May, Knysna experiences a noticeable drop in humidity, settling at 77%, which is consistent with the slightly lower values seen in early winter months. This reduction marks a shift from the peak humidity levels recorded in the autumn, such as March and April, which hovered around 81-82%. The transition is subtle yet significant; as summer fades into winter, the fluctuating humidity creates a unique coastal climate. Interestingly, the humidity levels remain relatively stable throughout the year, with the months of July and August showing only a slight dip to 76% and 73%, respectively, hinting at a temperate yet refreshing environment ideal for both residents and visitors alike.
In May, Knysna experiences a more moderate UV Index of 5, marking a noticeable shift from the extreme levels seen earlier in the year. With a burn time of 30 minutes, outdoor enthusiasts can enjoy the beautiful scenery without fear of quick sunburn. This time of year signals a welcome respite from the intense sun of the summer months, allowing for longer, safer outdoor activities. As we transition into winter, the UV Index continues to drop, indicating an overall trend towards lower sun exposure, which will remain steady over the next couple of months. For more insights on sun safety, explore the details at Knysna UV Index.
UV Risk Categories
May in Knysna, South Africa, experiences a charming transition as the fall season unfolds. With 298 hours of sunshine, it marks a slight decline from the vibrant daylight of the previous months, yet still offers a warmth that invites exploration. This dip in sunshine hours is part of a gradual descent leading into winter, where the long days of summer, peaking in December with 415 hours, feel like a distant memory. As the annual cycle progresses, each month reveals its unique character—June offers the fewest hours at 278, while November starts the ascent towards summer again, hinting at the cyclical dance of nature. In May, the lingering rays promise a perfect backdrop for outdoor adventures, making it an ideal time to embrace Knysna’s breathtaking landscapes.
In May, Knysna, South Africa, enjoys a moderate 59% chance of sunny weather, making it a delightful springtime destination. This figure represents a slight increase from the preceding months of April, which saw only a 47% chance, hinting at a transition toward sunnier conditions as the season progresses. Interestingly, June and July witness a rise in sunny prospects, with probabilities climbing to 67% and 69%, respectively, suggesting that the onset of winter brings clearer skies. Overall, while May may still carry some suspense in terms of sunshine, it stands out positively amidst a trend of fluctuating weather, setting the stage for the brighter days ahead in Knysna.
In Knysna, South Africa, the daylight duration experiences a rhythmic ebb and flow throughout the year, creating a captivating cycle that reflects the changing seasons. May, with its 10 hours of daylight, marks the transition into the heart of autumn, where days begin to shorten significantly from the 14 hours seen in January. This gradual decrease in daylight continues into June, reaching its lowest point at 9 hours. However, the trend doesn't remain static for long; July and August both enjoy 10 hours of daylight, suggesting a brief resurgence before the annual light begins to extend again. As the year progresses, daylight gradually increases, leading to longer days by spring. This pattern not only influences the local environment but also enriches the experiences for both residents and visitors alike.
In May, Knysna experiences a gentle breeze with an average wind speed of 3.7 m/s (8 mph), offering a refreshing contrast to the calmer months preceding it. This slight uptick from April's 2.9 m/s marks a trend of increasing wind speeds as winter approaches, with June maintaining the same velocity. Observing the earlier months, wind speeds were generally lower, peaking in January at 4.4 m/s (10 mph), and gradually declining towards the end of autumn. As the seasons shift, Knysna's winds tend to pick up again, hinting at the energizing temperatures of the upcoming summer months. This consistent yet mild wind pattern enhances the region's allure, inviting both locals and visitors to enjoy its stunning natural beauty year-round.
Weather in Knysna varies notably across the year, with each month offering distinct climate conditions. This page compares May’s weather to other months in Knysna, focusing on differences in temperature, rainfall, humidity, and UV levels.
In comparing the weather of May and January, it is evident that January tends to be warmer overall. While May's temperatures range from a minimum of 8°C (46°F) to a maximum of 28°C (82°F) with an average of 16°C (61°F), January features higher temperatures, with a minimum of 12°C (55°F), an average of 20°C (69°F), and a maximum of 31°C (89°F). Additionally, January experiences slightly more precipitation, totaling 49 mm (1.9 in) over 8 days, compared to May's 36 mm (1.4 in) spread across 6 days. Both months share similar humidity levels at 77%, but January's warmer conditions make it feel more humid on average. For more detailed insights, you can read about the Knysna weather in January.
In comparing the weather between May and February, we see distinct differences in temperature and precipitation patterns. May offers a milder climate with temperatures ranging from a minimum of 8°C to a maximum of 28°C, averaging around 16°C, while February tends to be hotter, experiencing minimums of 13°C and highs reaching up to 35°C, with an average of 20°C. Precipitation is slightly lower in May at 36 mm over 6 days compared to February's 43 mm over 9 days, indicating that February may have a bit more rainy weather. Humidity levels are similar, with May at 77% and February at 79%, suggesting both months maintain a fairly humid environment. For more details on February weather specifically, you can check Knysna weather in February.
When comparing the weather in March and May, March tends to be warmer, with average temperatures ranging from 11°C (52°F) to a maximum of 31°C (88°F), compared to May's range of 8°C (46°F) to 28°C (82°F). Additionally, March experiences slightly more precipitation, averaging 42 mm (1.6 in) over 8 days, while May has less rainfall at 36 mm (1.4 in) over 6 days. The humidity is also higher in March at 82%, compared to May's 77%. For a detailed look at the weather in March, visit Knysna weather in March.
In comparing the weather between April and May, it's evident that both months exhibit mild temperatures, but with some distinct differences. April boasts slightly warmer temperatures, with a minimum of 9°C (49°F) and a maximum reaching up to 31°C (88°F), while May's temperatures range from a minimum of 8°C (46°F) to a max of 28°C (82°F). Precipitation levels are also different; April receives 26 mm (1.0 in) over about 7 days, whereas May has a bit more precipitation at 36 mm (1.4 in) over 6 days, indicating that May could feel a bit wetter despite having fewer rainy days. Additionally, humidity remains relatively high in both months, with April at 81% and May slightly lower at 77%. For further insights into April's weather patterns, you can refer to Knysna weather in April.
In comparing the weather patterns of May and June, it’s clear that both months exhibit mild temperatures and moderate humidity. May features a warmer average temperature of 16°C (61°F) and a maximum of 28°C (82°F), while June experiences slightly cooler conditions, with an average of 15°C (59°F) and a max of 27°C (81°F). Additionally, May sees more precipitation at 36 mm (1.4 in), compared to June’s 24 mm (1.0 in), although both months have rain on approximately six days. The humidity is also a bit higher in May at 77%, compared to June's 74%. For a detailed overview, you can refer to Knysna weather in June.
In comparing the weather between May and July, May tends to be warmer with an average temperature of 16°C (61°F) compared to July's cooler average of 14°C (57°F). While both months experience similar humidity levels, May has higher maximum temperatures, reaching up to 28°C (82°F), whereas July peaks at 26°C (79°F). Precipitation is slightly greater in July, with 41 mm (1.6 in) compared to May's 36 mm (1.4 in), although both months see rain on approximately six days. For more detailed insights, you can explore Knysna weather in July.
In comparing the weather of May and August, May tends to be slightly warmer with average temperatures reaching 16°C (61°F), whereas August sees a cooler average of 13°C (56°F). May also enjoys higher maximum temperatures, hitting 28°C (82°F), compared to August's peak of 26°C (80°F). However, August experiences more precipitation, receiving 61 mm (2.4 in) over 9 days, while May has only 36 mm (1.4 in) spread over 6 days. Additionally, the humidity remains relatively high in both months, with May at 77% and August at 73%. For more detailed information, you can check out Knysna weather in August.
In comparing the weather between May and September, May tends to be milder with average temperatures around 16°C (61°F), peaking at 28°C (82°F). It experiences relatively low precipitation of 36 mm (1.4 in) over about 6 days, and the humidity is moderately high at 77%. In contrast, September shows a slightly cooler average temperature of 15°C (59°F) but can reach a maximum of 33°C (91°F). It also sees more precipitation, totaling 59 mm (2.3 in) over 9 days, with humidity slightly lower at 75%. For a more detailed look at September weather, check out Knysna weather in September.
May and October exhibit similar average temperatures, with May ranging from a minimum of 8°C (46°F) to a maximum of 28°C (82°F), and October showing slightly higher temperatures, with a minimum of 9°C (48°F) and a maximum of 33°C (91°F). However, October experiences increased precipitation, totaling 53 mm (2.1 in) over 9 days, compared to May's 36 mm (1.4 in) over only 6 days. Humidity levels remain fairly consistent between the two months, with May at 77% and October slightly lower at 75%. For more detailed weather information, you can visit Knysna weather in October.
In May, temperatures in Knysna range from a minimum of 8°C (46°F) to a comfortable maximum of 28°C (82°F), with an average of 16°C (61°F). The month sees moderate precipitation of 36 mm (1.4 in) over approximately 6 days, contributing to a humidity level of 77%. In contrast, November experiences slightly higher temperatures, with a minimum of 8°C (47°F), an average of 17°C (63°F), and a higher maximum of 31°C (88°F). However, it also brings increased rainfall, totaling 65 mm (2.6 in) over about 9 days, and maintaining a slightly lower humidity of 75%. For detailed information, you can refer to Knysna weather in November.
In May, temperatures in Knysna range from a minimum of 8°C (46°F) to a maximum of 28°C (82°F), with an average of 16°C (61°F). The month features relatively low precipitation at 36 mm (1.4 in) over six days, while humidity remains high at 77%. In contrast, December brings slightly warmer weather, with temperatures ranging from a minimum of 11°C (52°F) to a maximum of 30°C (87°F) and an average of 19°C (66°F). Precipitation increases to 45 mm (1.8 in) across nine days, maintaining the same humidity level of 77%. For more information on the December weather, check out Knysna weather in December.
As may unfolds in Knysna, the weather shifts toward a more moderate climate compared to the preceding summer months. With maximum temperatures reaching a pleasant 28°C (82°F) and an average of 16°C (61°F), it's ideal for outdoor activities without the extreme heat. However, the arrival of May also brings a noticeable increase in humidity, soaring to 77%, creating a refreshing yet slightly damp atmosphere. Rainfall becomes more common, with 36 mm (1.4 in) spread across approximately 6 days, making it a transitional month as the region prepares for the cooler winter ahead. For a more comprehensive understanding of what to expect throughout the year, explore the full details at Knysna Climate.