September Weather in Montagu, South Africa

Last updated: August 31, 2025

In September, Montagu, South Africa, experiences a diverse range of temperatures, with a maximum soaring to 35°C (95°F) and an average of 14°C (57°F), showcasing the region's warm climate. Nights can be brisk, dropping to a minimum of 1°C (33°F), which adds a refreshing contrast to the daytime heat. This month also brings approximately 25 mm (1.0 in) of rainfall over about 6 days, contributing to a humidity level of 74%. As the transition from winter to spring unfolds, September proves to be a month of shifting weather patterns, making Montagu's landscape vibrant and alive.

September Temperature in Montagu

In September, Montagu experiences a refreshing transition into spring, with temperatures ranging from a crisp 1°C (33°F) at night to a comfortable 35°C (95°F) during the day. This month marks a noticeable rise from the cooler winter, as average temperatures climb to 14°C (57°F), hinting at the warmer days to come. As the region shakes off the winter chill, you'll find that the nights are still cool enough to enjoy a cozy sweater, while the afternoons invite outdoor activities under the sun. This blend of mild evenings and warm afternoons makes September an ideal time to explore the beautiful landscapes of South Africa's Western Cape.

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

The chart illustrates September temperature patterns in Montagu, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Montagu, 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 Montagu 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 Montagu

September in Montagu, South Africa, ushers in a moderate precipitation pattern, with an average of 25 mm (1.0 in) of rainfall spread over six days. This amount is slightly less than the preceding months, as August saw 34 mm and July recorded 37 mm—indicating a peak in winter rains. As the transition to spring continues, September's rainfall signals a gradual easing of the dry season, paving the way for the upcoming bloom of spring. While precipitation remains consistent, it's interesting to note that the number of rainy days holds steady at six, reflecting a reliable, if not abundant, water supply during this period. Thus, September marks a fascinating balance between the tail end of winter and the anticipation of a vibrant spring season.

September Precipitation Trends in Montagu

The chart displays monthly precipitation patterns in Montagu, 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 Montagu, 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.
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September Humidity in Montagu

In Montagu, South Africa, September ushers in a gentle shift in humidity, with levels averaging around 74%. This represents a slight decrease from the peak of 82% experienced in the cooler months of June and July, where the air often feels thick and rich. As the seasons transition, September's humidity aligns more closely with the early summer months, hinting at warmer weather ahead. Notably, this dip from the winter's humidity peaks reflects a gradual return to the more temperate conditions typical of spring, setting the stage for October’s further decline to 67% and ultimately leading back to the dryer months of late in the year.

September Average Humidity in Montagu

This chart illustrates the average monthly humidity levels in Montagu, 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 Montagu 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 Montagu

In September, Montagu, South Africa, experiences a UV Index of 9, categorized as very high, with a suggested burn time of just 15 minutes. This marks a transition from the moderate levels of the winter months, where the UV Index hovered around 4 to 6, indicating a shift toward higher sun exposure as spring approaches. As the UV Index gradually climbs through the coming months, reaching extreme levels of 12 in October and peaking at 15 by December, residents and visitors alike should be vigilant about sun safety. With the warmer weather arriving, it's essential to stay informed about daily UV levels. For comprehensive UV insights, visit Montagu UV Index.

Maximum UV Index Levels in Montagu for September

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

September brings a delightful 332 hours of sunshine to Montagu, South Africa, making it a charming time to experience the region's stunning landscapes. As the crispness of winter begins to fade, the sunlight hours show a steady increase from August's 313 hours, hinting at the vibrant energy of spring. This gradual ascent in sunshine continues into October, where it leaps to 374 hours, heralding the start of warmer months. Montagu's climate paints a beautiful picture, underscoring the town's transition from the cooler winter months towards the sun-soaked days of summer, inviting all to revel in its natural beauty.

Monthly Sunshine Duration in Montagu: September Highlighted

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

Chance of Sun in Montagu During September

In Montagu, South Africa, September marks a transitional period as the seasons shift, bringing a moderate chance of sunny weather at 51%. While this figure places September on par with October, it shows a noticeable decline from the peak sunny months of January and February, which enjoy chances of 74% and 73% respectively. As summer approaches, the likelihood of clear skies gradually decreases from the earlier months of the year, suggesting that those seeking sunny days might want to plan their outings for the late summer rather than early spring. Despite the dip in sunshine, September still holds promise for pleasant, albeit sometimes cloudy, days that invite exploration and outdoor activities.

Percentage of Sunny Days in September in Montagu

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

Daylight Hours in Montagu in September

As September unfolds in Montagu, South Africa, daylight begins to recover from the shorter days of winter. With around 11 hours of daylight, September marks a transition towards longer days, reminiscent of the approaching summer months. This gradual increase is noticeable as daylight extends to 12 hours in October, foreshadowing the warm days ahead. Following the peak summer months of January and December, which bask in 14 hours of daylight, the seasonal shift becomes evident as the light dips to 9 hours in June. The month of September encapsulates this ebb and flow, offering a balance of fading winter light and the promise of longer days that invigorate both nature and the spirits of Montagu's residents.

Average Daylight Hours in Montagu for September

The chart illustrates the variation in daylight duration in Montagu 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: Montagu daylight hours, calculated by summing the hours between sunrise and sunset for each day.

September Winds in Montagu

As September arrives in Montagu, South Africa, the average wind speed settles at a gentle 2.4 m/s (5 mph), reflecting a slight uptick from the quieter summer months. This transition marks a subtle shift in the seasonal climate, bridging the calmness of winter and the increased breezes of spring. Interestingly, the wind consistently hovers between 2.0 m/s and 2.9 m/s throughout the year, with September maintaining this trend, mirroring the steady patterns observed in July and August. As the days warm up and the air becomes more vibrant with the promise of spring, the wind provides a refreshing backdrop, inviting residents and visitors to embrace the beauty of Montagu's stunning landscapes.

Average September Wind Speed in Montagu

The chart displays monthly wind speed patterns in Montagu, 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: Montagu September wind data, generated using information from the Copernicus Climate Change Service.

How September Weather in Montagu Compares to Other Months

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

September and January present strikingly different weather patterns. 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 temperature of 14°C (57°F). This month also experiences about 25 mm (1.0 in) of precipitation over approximately 6 days, accompanied by a higher humidity level of 74%. In contrast, January boasts milder nighttime temperatures starting at 10°C (50°F), escalating to sweltering highs of 42°C (107°F) and an average of 22°C (71°F). Precipitation slightly increases to 31 mm (1.2 in) but occurs over fewer days, with humidity dropping to 62%. For a more detailed look at January weather in Montagu, visit Montagu weather in January.

September and February present quite different weather profiles. 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 spread over six days, contributing to a higher humidity level of 74%. In contrast, February offers milder evenings with a minimum temperature of 10°C (50°F) and a daytime average of 22°C (72°F), peaking at 38°C (101°F). Although February has less rainfall at 17 mm (0.7 in) over five days, its humidity is notably lower at 62%. For more details, check out Montagu weather in February.

September and March offer distinct weather experiences. In September, temperatures range from a chilly minimum of 1°C (33°F) to a comfortable average of 14°C (57°F), with highs reaching 35°C (95°F). The month typically sees about 25 mm (1.0 in) of precipitation over approximately 6 days, and humidity levels are around 74%. In contrast, March presents a warmer climate, with minimum temperatures starting at 8°C (46°F) and averaging 20°C (68°F), while maximums can soar to 37°C (99°F). It also experiences slightly higher precipitation at 37 mm (1.5 in) spread across 7 days, with humidity at 70%. For more detailed insights on March weather, visit Montagu weather in March.

September and April present distinct weather characteristics. In September, temperatures can range from a cool 1°C (33°F) at night to a hot 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 approximately 6 days, accompanied by a humidity level of 74%. In contrast, April offers slightly milder conditions, with minimum temperatures around 4°C (40°F) and highs reaching up to 36°C (98°F), averaging at 17°C (63°F). Rainfall is less frequent, with only 16 mm (0.6 in) spread over 5 days, and the humidity is slightly lower at 72%. For more details, check out Montagu weather in April.

In September, the weather can exhibit a broader temperature range, with minimums dropping to around 1°C (33°F) and maximums peaking at 35°C (95°F). The average temperature sits at 14°C (57°F), contributing to a relatively humid atmosphere with a humidity level of 74%. Precipitation is moderate, with about 25 mm (1.0 in) falling over approximately six days.

In contrast, May experiences slightly milder temperatures, where the minimum is 2°C (36°F) and the maximum reaches around 30°C (87°F). The average temperature remains close to September's at 15°C (59°F), but May sees slightly higher humidity at 77% and a bit more precipitation at 27 mm (1.1 in) over just four days. For more details, you can check out Montagu weather in May. Overall, both months feature mild conditions but reflect a gradual transition as spring gives way to falling spring temperatures.

When comparing the weather in September to June, we see notable differences in temperatures and humidity levels. September offers a wider temperature range, with minimums reaching 1°C (33°F) and maximums soaring up to 35°C (95°F), while June's temperatures are generally cooler, ranging from a minimum of 0°C (31°F) to a maximum of 27°C (81°F). Precipitation levels are relatively close, with September receiving 25 mm (1.0 in) and June slightly higher at 28 mm (1.1 in), both occurring over 6 days. Humidity is also a bit lower in September at 74%, compared to June's 82%. For a more detailed insight, you can check Montagu weather in June.

When comparing the weather in September and July, several notable differences emerge. September experiences a much broader temperature range, with minimums as low as 1°C (33°F) and maximums reaching up to 35°C (95°F), leading to an average of 14°C (57°F). In contrast, July has cooler temperatures overall, with a minimum of -2°C (29°F), an average of 11°C (52°F), and a maximum of 29°C (84°F). Precipitation levels are also different, as July sees a higher amount of rainfall at 37 mm (1.5 in) compared to September's 25 mm (1.0 in). Furthermore, July tends to be slightly more humid, with humidity levels at 82% versus September's 74%. For more detailed insights, you can explore Montagu weather in July.

When comparing the weather between September and August, September tends to be warmer overall, with average temperatures rising from 11°C (52°F) in August to 14°C (57°F) in September. The maximum temperature in September reaches up to 35°C (95°F), significantly higher than August's peak of 29°C (84°F). While both months experience precipitation on about six days, September sees slightly less rainfall at 25 mm (1.0 in) compared to August's 34 mm (1.3 in). Humidity remains consistently high, with September at 74% and August at 78%. For a detailed look at August conditions, you can check out Montagu weather in August.

In September, temperatures ranged from a minimum of 1°C (33°F) to a maximum of 35°C (95°F), averaging around 14°C (57°F). The month saw 25 mm (1.0 in) of precipitation over six days, along with a higher humidity level of 74%. In contrast, October brings a slight increase in temperatures, with a minimum of 3°C (37°F) and a maximum reaching 37°C (99°F), averaging 17°C (62°F). Precipitation increases marginally to 28 mm (1.1 in) over the same six days but with lower humidity at 67%. For more detailed information, you can check Montagu weather in October.

In September, the weather introduces cooler temperatures, ranging from a minimum of 1°C (33°F) to a maximum of 35°C (95°F), with an average temperature of 14°C (57°F). This month experiences about 25 mm (1.0 in) of precipitation over six days, along with a higher humidity level of 74%. In contrast, November typically showcases a milder climate, with minimum temperatures of 5°C (41°F) and maximums reaching up to 37°C (98°F), averaging 18°C (65°F). Rainfall increases to 39 mm (1.5 in) over the same six days, while humidity drops to a more comfortable 61%. For a detailed look at weather conditions, check out Montagu weather in November.

When comparing the weather in September and December, significant differences emerge. September experiences a minimum temperature of 1°C (33°F) and an average of 14°C (57°F), with a maximum that can reach up to 35°C (95°F). In contrast, December enjoys milder conditions, with minimum temperatures at 9°C (48°F) and an average of 20°C (68°F), peaking at a hot 40°C (103°F). Both months receive similar amounts of precipitation, around 25 mm (1.0 in), but September has slightly more rainy days with 6, compared to December's 5. Additionally, December boasts lower humidity at 60% compared to September's 74%, making it feel more comfortable overall. For more specific information about Montagu's weather in December, check out Montagu weather in December.

Compare Montagu's Climate with Cities Worldwide

Conclusion: What to Expect From September Weather in Montagu

As September unfolds in Montagu, the weather hints at the transition from winter to spring, bringing with it a refreshing change in temperature compared to the cooler months. While the average temperature rises to a comfortable 14°C, days can occasionally reach a sizzling 35°C, showcasing the region's ability to surprise. This month also sees a modest 25 mm of precipitation over just 6 days, making it relatively dry and sunny compared to the wetter winter months. With humidity levels around 74%, September presents a unique blend of warmth and moisture, setting the stage for the vibrant blooms of spring. For more detailed insights on how Montagu's weather evolves throughout the year, explore the Montagu Climate.