Last updated: August 31, 2025
May in Port Saint John's, South Africa presents a delightful mix of warm temperatures and fresh coastal breezes. The maximum temperature reaches a comfortable 31°C (87°F), while the average hovers around a mild 18°C (65°F), allowing for pleasant outdoor activities. As the days cool down, nighttime lows can dip to a refreshing 8°C (47°F). With precipitation totaling 53 mm (2.1 in) over just 4 days, the humidity remains relatively high at 88%, adding to the lush, vibrant landscape. This month beautifully captures the essence of South Africa's mild late-autumn climate, inviting both locals and tourists to explore its scenic beauty.
In May, Port Saint John’s experiences a notable shift in temperatures as the autumn chill begins to settle in. The average temperature drops to a mild 18°C (65°F), with nighttime temperatures dipping to a cool 8°C (47°F). Despite this decline, the daytime can still reach a pleasant 31°C (87°F), offering a comfortable blend of warmth and fresh air. Compared to the warmer summer months, temperatures in May herald a transition, with cooler nights becoming more common while the afternoons still bask in residual heat. This balance makes May an ideal time to enjoy outdoor activities while soaking in the natural beauty of this captivating coastal town.
May in Port Saint John's, South Africa, marks a distinct transition in the climate, as it experiences significantly reduced precipitation compared to the preceding months. With only 53 mm (2.1 in) of rainfall over just 4 days, May stands out as one of the drier months, reflecting a stark contrast to the wetter earlier months like February and March. This drop in both total rainfall and rainy days signals the onset of a drier season, paving the way for the upcoming winter months. As the city inches closer to June, the average rainfall further diminishes, with a mere 33 mm (1.3 in) anticipated, highlighting a clear trend towards less precipitation as the year progresses. This shift not only alters the landscape but also enhances the charm of Port Saint John's mild autumn evenings.
May in Port Saint John's, South Africa, maintains a consistently high humidity level of 88%, mirroring the previous months of January and February. This slight decrease from the higher humidity peaks of March and April, which reached 89%, indicates a gradual transition towards the drier winter months. As the year progresses, humidity levels begin to decline significantly, dropping to 82% in June and continuing to decrease through the colder months. Overall, May serves as a bridge between the humid height of summer and the dryer winter, offering a unique blend of warmth and moisture that characterizes this coastal region.
In May, Port Saint John's experiences a high UV Index of 6, resulting in a burn time of approximately 25 minutes under the sun. This marks a noticeable transition from the extreme levels seen in the preceding months of January through April, which featured values soaring up to 14. As the seasons shift towards winter, the UV Index begins to decline, signaling a reduced risk of sunburn compared to earlier months. However, it's still essential to exercise caution and embrace sun safety measures. Observing trends, it's clear that while May offers some respite from the most intense rays, UV levels remain significant as the region heads into winter. Stay informed about daily UV conditions by checking out the Port Saint John's UV Index.
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In the enchanting coastal town of Port Saint John's, May brings a delightful average of 301 hours of sunshine, perfectly complementing the vibrant surroundings. As the seasons transition, sunshine hours fluctuate, peaking in December with a radiant 358 hours, while January welcomes the year with a robust 287 hours. Notably, the spring months see sunlit days gradually increase, highlighted by the steadily climbing figures from March’s 325 hours to April’s 293 hours. This sunny pattern continues into May, ensuring that locals and visitors alike can bask in the warm glow as winter approaches. With consistent sunshine throughout the year, Port Saint John's stays bright and inviting, making it a year-round paradise for outdoor enthusiasts.
As May rolls into Port Saint John's, the likelihood of sunny weather dramatically increases, with a promising 72% chance of sun. This marks a substantial rise from the preceding months, which typically hover around the 30% to 50% range. Coupled with a trend towards clearer skies, May serves as a transition into the sunnier half of the year, as it paves the way for July's peak of 86% sunshine. With each month leading up to May showing a gradual increase in sunny days, it’s clear that locals and visitors alike can look forward to more cheerful weather as early winter approaches.
In Port Saint John's, South Africa, the rhythm of daylight captivates throughout the year, shaping both daily life and natural beauty. As summer transitions into autumn, January and February bask in a generous 13 hours of daylight, inviting vibrant outdoor activities. However, the daylight starts to wane in March and April, dropping to 12 and then 11 hours respectively, as the cooler months approach. By May, daylight reaches 10 hours, a shift that signals the onset of winter—a trend that continues through June, July, and August, keeping the sun's presence steady at 10 hours. As spring arrives, daylight begins to lengthen again, climbing to 11 hours by September and culminating in a resurgence to 14 hours by December. This gradual ebb and flow of daylight not only paints a picturesque backdrop but also profoundly influences the lifestyle and ecological rhythm of this stunning coastal region.
In May, Port Saint John's experiences a gentle shift in its breezy climate, with average wind speeds settling at 3.0 m/s (7 mph)—a trend that continues from the previous month. This moderate wind flow not only creates a tranquil atmosphere but also serves as a prelude to the slightly more invigorating winds of the upcoming winter. Interestingly, throughout the year, wind speeds here generally hover around the 3.0 to 3.8 m/s mark, peaking slightly as summer transitions into autumn. As May rolls in, residents and visitors alike can enjoy the serene conditions while anticipating the invigorating breezes that are characteristic of the months ahead.
Weather in Port Saint John's varies notably across the year, with each month offering distinct climate conditions. This page compares May’s weather to other months in Port Saint John's, focusing on differences in temperature, rainfall, humidity, and UV levels.
May and January exhibit notable differences in weather patterns. In May, temperatures range from a cooler minimum of 8°C (47°F) to a maximum of 31°C (87°F), with an average of 18°C (65°F). The month is characterized by less precipitation, totaling 53 mm (2.1 in) over about four days, while maintaining a high humidity level of 88%. In contrast, January presents warmer conditions, with temperatures ranging from a minimum of 15°C (59°F) to a maximum of 35°C (95°F), averaging 22°C (73°F). This month experiences significantly more rainfall, accumulating 101 mm (4.0 in) across approximately 15 days, yet humidity remains constant at 88%. For further details on January weather, you can check Port Saint John's weather in January.
When comparing weather conditions in May and February, notable differences emerge. May experiences cooler temperatures, with a minimum of 8°C (47°F) and an average of 18°C (65°F), while February presents a warmer climate, ranging from a minimum of 15°C (59°F) and averaging 23°C (73°F). In terms of extremes, February can reach up to 34°C (93°F), significantly higher than May's maximum of 31°C (87°F). Additionally, February sees much more precipitation, with 137 mm (5.4 in) over 17 days compared to May's 53 mm (2.1 in) across just 4 days. Both months share the same humidity level of 88%, creating a similarly humid feel in the atmosphere. For more detailed insights on February weather, you can refer to Port Saint John's weather in February.
When comparing the weather in May and March, notable differences emerge. May tends to be milder, with temperatures ranging from a minimum of 8°C (47°F) to a maximum of 31°C (87°F), and an average temperature of 18°C (65°F). In contrast, March experiences warmer weather, with temperatures ranging from a minimum of 14°C (57°F) to a maximum of 33°C (92°F) and an average of 22°C (72°F). Precipitation is also considerably higher in March, totaling 126 mm (4.9 in) over 16 rainy days, compared to May's 53 mm (2.1 in) spread over only 4 days. Humidity levels are similar in both months, hovering around 88% in May and 89% in March. For a more detailed look at the weather, visit Port Saint John's weather in March.
In April, temperatures were slightly warmer on average, ranging from a minimum of 11°C (53°F) to a maximum of 33°C (92°F), with an average temperature of 20°C (68°F). However, this month also experienced significantly higher precipitation, totaling 130 mm (5.1 in) over 12 days, contributing to a humidity level of 89%. In contrast, May saw cooler temperatures, with a minimum of 8°C (47°F) and a maximum of 31°C (87°F), averaging 18°C (65°F). Precipitation decreased to 53 mm (2.1 in) over just 4 days, resulting in a slight drop in humidity to 88%. For more details about April's climate, you can check Port Saint John's weather in April.
May and June present notable differences in weather patterns. In May, temperatures range from a minimum of 8°C (47°F) to a maximum of 31°C (87°F), with an average of 18°C (65°F). The month sees more rain, with 53 mm (2.1 in) of precipitation over 4 days, and a higher humidity level of 88%. Conversely, June brings slightly cooler temperatures, with a minimum of 7°C (46°F), an average of 16°C (61°F), and a maximum of 30°C (86°F). Additionally, precipitation decreases to 33 mm (1.3 in) over 3 days, and humidity lowers to 82%. For more details about June weather, you can visit Port Saint John's weather in June.
May and July present distinct weather characteristics despite having similar maximum temperatures, with both months peaking at 31°C (87°F). In May, temperatures range from a cooler minimum of 8°C (47°F) to an average of 18°C (65°F), accompanied by relatively high humidity at 88% and a total precipitation of 53 mm (2.1 in) over 4 days. In contrast, July experiences slightly cooler temperatures, reaching a minimum of 6°C (43°F) and an average of 16°C (61°F), but boasts significantly less precipitation at just 10 mm (0.4 in) over 2 days and lower humidity at 77%. For more detailed insights into the weather during this month, visit Port Saint John's weather in July.
May and August exhibit distinct weather patterns, with May generally being warmer and slightly more humid. In May, temperatures range from a minimum of 8°C (47°F) to a maximum of 31°C (87°F), averaging around 18°C (65°F). With 53 mm (2.1 in) of precipitation over four days and a high humidity level of 88%, May often feels more tropical. In contrast, August sees cooler temperatures, with a minimum of 7°C (45°F) and a maximum of 30°C (86°F), averaging 16°C (61°F). Despite similar precipitation levels of 51 mm (2.0 in), August experiences rain over more days, totaling eight, and features lower humidity at 72%. For more details, you can check Port Saint John's weather in August.
May and September both offer mild temperatures, but they exhibit distinct weather patterns. In May, temperatures range from a minimum of 8°C (47°F) to a maximum of 31°C (87°F), with an average of 18°C (65°F). This month typically sees about 53 mm (2.1 in) of precipitation over just 4 days, coupled with high humidity averaging 88%. In contrast, September generally experiences slightly warmer conditions, with temperatures ranging from 9°C (48°F) to a maximum of 34°C (94°F) and an average of 17°C (64°F). However, it also tends to be wetter, accruing around 62 mm (2.4 in) of rainfall over 10 days, while humidity remains lower at 82%. For more detailed information on September weather specifically, check out Port Saint John's weather in September.
In comparing the weather of May and October, we see some notable differences. May typically features a minimum temperature of 8°C (47°F) and a maximum of 31°C (87°F), with average temperatures around 18°C (65°F). The month experiences relatively low precipitation, accumulating 53 mm (2.1 in) over just four days, and boasts high humidity levels at 88%.
In contrast, October tends to be slightly warmer, with a minimum temperature of 10°C (50°F) and a maximum of 34°C (93°F), while still maintaining an average of 18°C (65°F). However, it is significantly wetter, receiving 111 mm (4.4 in) of rain across 13 days, and has slightly lower humidity at 83%. For more detailed insights into October's climate, visit Port Saint John's weather in October.
In comparing May and November, we observe some notable differences in temperature and precipitation. May boasts a comfortable average temperature of 18°C (65°F), with highs reaching up to 31°C (87°F) and a relatively low precipitation level of 53 mm (2.1 in) over just four days. In contrast, November sees a slightly higher average temperature of 19°C (67°F), with maximum temperatures soaring to 34°C (93°F). However, it also brings significantly more rainfall, totaling 123 mm (4.9 in) across 18 days. Despite the increase in rainfall, humidity levels remain similar, hovering around 88% in May and 87% in November. For more detailed insights, you can check Port Saint John's weather in November.
May and December both feature warm temperatures, with daily averages around 18°C (65°F) and 21°C (70°F), respectively. However, December tends to be wetter, recording 129 mm (5.1 in) of precipitation over 18 days, compared to May's 53 mm (2.1 in) over just 4 days. Humidity remains constant at 88% in both months, but December's higher precipitation likely contributes to a more noticeably humid atmosphere. For more details about the weather in December, you can visit Port Saint John's weather in December.
As May unfolds in Port Saint John, the weather takes on a refreshing character distinct from the preceding months. With average daytime temperatures hovering around a comfortable 18°C (65°F), the daytime heat recedes, allowing for cooler evenings that dip to a crisp 8°C (47°F). This month also marks a transition to increased humidity at 88%, creating a more tropical ambiance that contrasts with the drier, warmer months of summer. Although the region receives 53 mm (2.1 in) of rainfall over just a few days, the overall experience is one of lush vibrancy, setting the stage for a serene coastal retreat. To explore more about how May fits into the broader climatic patterns of this enchanting location, check out Port Saint John's Climate.