December Weather in Manzini, Eswatini

Last updated: August 21, 2025

December in Manzini, Eswatini brings a warm and humid climate characterized by a maximum temperature soaring to 37°C (99°F) and an average of 23°C (75°F). With a minimum temperature of 14°C (57°F), the month is marked by relatively high humidity levels at 84%, creating a tropical environment. Rainfall is also a significant feature, with an accumulation of 111 mm (4.4 in) spread over 16 days, adding to the lushness of the landscape. Visitors can expect a vibrant mix of sun and showers during this dynamic month.

December Temperature in Manzini

In December, Manzini, Eswatini, experiences a delightful blend of warmth and comfort, with temperatures showcasing a subtle transition as the year comes to a close. The minimum temperature hovers around a mild 14°C (57°F), ensuring cool nights, while the average climbs to 23°C (75°F), providing pleasant days suited for outdoor activities. The maximum can reach up to 37°C (99°F), indicative of the region's summer peak, yet it remains less intense compared to the scorching highs seen earlier in the year. This month marks a harmonious balance between the lingering warmth of late spring and the cooler evenings of summer, making December a wonderful time to enjoy the vibrant landscapes and festive spirit of Eswatini.

December Weather in Manzini: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in Manzini, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Manzini, December 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).
JanFebMarAprMayJunJulAugSepOctNovDec757574706661616468697274
Data source: Temperature data for Manzini 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.

December Precipitation in Manzini

In December, Manzini, Eswatini, experiences a notable increase in precipitation, receiving 111 mm (4.4 in) over the course of 16 days. This marks a continuation of the wet season, where rainfall begins to crescendo after the relatively dry months of May through July. December’s rainfall, while slightly lower than the figures from the previous month of November, highlights the shift into a more humid climate that characterizes the late year. The consistent number of rainy days, echoing the trend seen in February, suggests that while each individual shower may be lighter, the regularity of precipitation continues to support the lush, vibrant landscapes that Eswatini is known for.

December Precipitation Trends in Manzini

The chart displays monthly precipitation patterns in Manzini, with values for each month alongside December’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how December’s conditions compare to those of other months. In Manzini, December typically receives around {2} mm ({3} inches) of precipitation spread over approximately {4} days.
JanFebMarAprMayJunJulAugSepOctNovDec131170885520154273873104111
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Manzini

In Manzini, Eswatini, December brings a humidity level of 84%, reflecting a slight dip from the higher figures recorded in the earlier months. As the year progresses, humidity trends reveal a peak in May at 86%, capturing the essence of the rainy season. Following this, the levels stabilize around the mid-80s from October to November, only to drop to a more comfortable 84% in December. Throughout the year, humidity tends to fluctuate gently, remaining consistently above 77%, suggesting a tropical climate that contributes to the lush, verdant landscape synonymous with the region. This consistent moisture not only defines December but also underscores the overall climatic character of Manzini.

December Average Humidity in Manzini

This chart illustrates the average monthly humidity levels in Manzini, with December’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In December, average humidity in Manzini is approximately {2}%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec82%81%81%82%86%79%81%77%85%85%86%84%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Manzini

In December, the UV Index in Manzini, Eswatini, reaches a striking 15, categorizing it as extreme with a minimal burn time of just 10 minutes. This sharp rise aligns with the trend observed during the preceding months, where values hovered between 12 and 14 for October and November, indicating a consistent period of intense sun exposure. As the year draws to a close, residents and visitors alike should be especially cautious, emphasizing the importance of sun protection as this month represents one of the highest UV ratings of the year. For detailed insights on UV exposure, explore Manzini UV Index.

Maximum UV Index Levels in Manzini for December

The chart shows the monthly maximum UV Index (UVI) for Manzini in December, 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 December, the maximum UV index in Manzini typically reaches {2}, which falls under the {3} exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec1514129756810121315
Data source: Manzini December 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.

December Sunshine in Manzini

In December, Manzini, Eswatini, basks in the warmth of the sun with an impressive 336 hours of sunshine, echoing the high-light trends of the previous months. As the year draws to a close, the city experiences a striking surge in sunlight, aligning with the brightness observed in March. This vibrant culmination of the year indicates that December, alongside March, stands out as the sunniest month, fostering an inviting atmosphere for outdoor activities and festive celebrations. The consistent sunshine throughout the year, particularly in the latter months, highlights Manzini's inviting climate, making it a delightful destination for sun-seekers and nature lovers alike.

Monthly Sunshine Duration in Manzini: December Highlighted

The December sunshine duration represents the total number of hours Manzini experiences direct sunlight during the month of December, excluding cloudy or obstructed periods. This chart compares the sunshine duration of December with the other months of the year.
JanFebMarAprMayJunJulAugSepOctNovDec286h292h336h309h309h293h311h312h309h314h319h336h
Data source: Manzini December Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Manzini During December

As December arrives in Manzini, Eswatini, the likelihood of enjoying sunny weather takes a dip, with only a 19% chance of sunshine. This decline is notable when compared to the preceding months, particularly when the sun shines brightly with 87% certainty in July and maintains a solid 71% in both April and May. The trend reveals a gradual decrease in sunny days from the peak summer months, with November already hinting at the cloudier conditions to come. By December, the transition into the rainy season is evident, making it a time when sunshine becomes more elusive, thus setting a cozy, cooler atmosphere for the festive month.

Percentage of Sunny Days in December in Manzini

The chart illustrates the percentage of sunny days in Manzini throughout the year, with December 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 Manzini experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec28%20%55%71%71%80%87%67%65%38%32%19%
Data source: Manzini December chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Manzini in December

In Manzini, Eswatini, the daylight duration experiences a captivating rhythm throughout the year. Starting strong in January with 13 hours, the daylight gradually decreases to 10 hours during the mid-year months of May through July. As winter comes to a close, the days begin to lengthen again, with sunlight increasing back to 13 hours by December. This cyclical trend, marked by distinct seasonal variations, highlights a shift from the shorter, cooler days of winter towards the brighter and longer days of summer, ultimately shaping the daily life and activities in this vibrant region.

Average Daylight Hours in Manzini for December

The chart illustrates the variation in daylight duration in Manzini throughout the year, with December highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec13h 34m12h 58m12h 12m11h 25m10h 47m10h 29m10h 38m11h 12m11h 56m12h 43m13h 24m13h 45m
Data source: Manzini daylight hours, calculated by summing the hours between sunrise and sunset for each day.

December Winds in Manzini

As December rolls into Manzini, Eswatini, the average wind speed settles at a mild 2.5 m/s (6 mph), reflecting the gentle breezes that accompany the festive season. This slight uptick from earlier months, like the 2.1 m/s (5 mph) in May, indicates a trend towards calmer winds as summer approaches. Interestingly, December's winds mirror those of the preceding month, November, maintaining a consistent, pleasant atmosphere. Furthermore, this stability contrasts with the seasonal peaks observed in October and August, both reaching 2.9 m/s and 2.7 m/s respectively. Such rhythmic fluctuations in wind speed contribute to the overall charm of December, making it an inviting time for both locals and visitors to enjoy the outdoors in beautiful Eswatini.

Average December Wind Speed in Manzini

The chart displays monthly wind speed patterns in Manzini, with values for each month shown alongside December's data, which is highlighted for easy comparison. It illustrates the average wind speed, offering insights into how December's wind conditions compare to the rest of the year.
JanFebMarAprMayJunJulAugSepOctNovDec2.42.52.02.02.12.22.42.72.72.92.62.5 m/s
Data source: Manzini December wind data, generated using information from the Copernicus Climate Change Service.

How December Weather in Manzini Compares to Other Months

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

In December, the weather is characterized by a wider temperature range, with minimums around 14°C (57°F) and maximums peaking at 37°C (99°F). The month experiences considerable precipitation, averaging 111 mm (4.4 in) over 16 days, and maintains a high humidity level of 84%.

In contrast, January sees a slight decrease in maximum temperatures, with highs reaching 35°C (96°F) and slightly lower minimums at 13°C (56°F). Although the average temperature rises to 24°C (75°F), January has increased precipitation at 131 mm (5.2 in) spread across 13 days, along with a marginally lower humidity level of 82%. For more detailed weather information, visit Manzini weather in January.

In December, the weather features a warm range with minimum temperatures around 14°C (57°F) and an average high of 37°C (99°F), accompanied by substantial precipitation totaling 111 mm (4.4 in) over 16 days. The humidity is notably high at 84%, contributing to a humid atmosphere. In contrast, February sees a slight increase in both minimum and average temperatures, with lows of 15°C (59°F) and an average of 24°C (76°F), although the maximum temperature decreases slightly to 35°C (95°F). February also experiences heavier rainfall, with precipitation reaching 170 mm (6.7 in) across the same number of days, coupled with a marginally lower humidity of 81%. For more detailed insights into February weather, you can visit Manzini weather in February.

When comparing the weather conditions in December and March, both months share similar minimum temperatures, resting at a comfortable 14°C (57°F). However, December experiences slightly warmer averages and maximum temperatures, with an average of 23°C (75°F) and a peak of 37°C (99°F), compared to March's average of 23°C (74°F) and maximum of 35°C (96°F). In terms of precipitation, December is wetter, receiving 111 mm (4.4 in) over 16 days, while March has less rainfall, totaling 88 mm (3.5 in) over 12 days. Humidity also drops slightly from December's 84% to March's 80%. For more details on March weather, you can check Manzini weather in March.

December and April present distinct weather characteristics. In December, temperatures can range from a minimum of 14°C (57°F) to a maximum of 37°C (99°F), averaging around 23°C (75°F). This month also experiences significant rainfall, with 111 mm (4.4 in) of precipitation across 16 days, contributing to a high humidity level of 84%.

In contrast, April sees slightly cooler temperatures, with a minimum of 10°C (51°F) and a maximum of 36°C (97°F), averaging at 21°C (71°F). Precipitation is noticeably less, totaling 55 mm (2.2 in) over just 8 days and maintaining a lower humidity of 82%. For a detailed view of the weather trends specific to April, you can visit Manzini weather in April.

December and May present distinctly different weather patterns. In December, temperatures range from a minimum of 14°C (57°F) to a scorching maximum of 37°C (99°F), with an average of 23°C (75°F). The month is characterized by high humidity at 84% and significant precipitation, receiving 111 mm (4.4 in) over 16 days. In contrast, May brings cooler temperatures with a minimum of 6°C (44°F), an average of 19°C (66°F), and a maximum of 32°C (90°F). Precipitation is much lower at 20 mm (0.8 in) over just 4 days, and humidity remains relatively high at 86%. For more detailed information, you can check Manzini weather in May.

December weather is characterized by warm temperatures, with minimums around 14°C (57°F) and maximums reaching up to 37°C (99°F). The average temperature is a comfortable 23°C (75°F), but this month also sees significant rainfall, totaling 111 mm (4.4 in) over 16 days, and high humidity at 84%. In contrast, June presents a much cooler climate, with temperatures ranging from a minimum of 2°C (37°F) to a maximum of 32°C (90°F) and an average of 16°C (62°F). Precipitation is quite low at just 15 mm (0.6 in) over only 2 days, and humidity is also lower at 78%. For more details, you can check out Manzini weather in June.

In comparing the weather between December and July, there is a noticeable contrast in both temperature and precipitation. December boasts a warmer climate, with average temperatures ranging from a minimum of 14°C (57°F) to a maximum of 37°C (99°F), and experiences significantly higher rainfall, averaging 111 mm (4.4 in) over 16 days. In contrast, July presents much cooler temperatures, with an average range between 4°C (40°F) and 33°C (91°F), and minimal precipitation of just 4 mm (0.2 in) over a single day. Despite both months having high humidity, July's levels are slightly lower at 81%, compared to December's 84%. For more details, check Manzini weather in July.

December and August exhibit quite contrasting weather patterns. In December, temperatures are generally much warmer, with minimums around 14°C (57°F) and maximums reaching as high as 37°C (99°F), accompanied by high humidity levels averaging 84%. This month also experiences significant rainfall, totaling 111 mm (4.4 in) over approximately 16 days. In contrast, August presents a cooler climate, with minimum temperatures of 6°C (43°F) and average maximums of 35°C (96°F). The precipitation is markedly lower at 27 mm (1.1 in), occurring on just six days, and the humidity at 77% is slightly reduced. For more details on August weather, you can visit Manzini weather in August.

December weather is typically warmer and more humid compared to September. In December, the minimum temperature is around 14°C (57°F) and the average reaches about 23°C (75°F), while September enjoys cooler temperatures, with a minimum of 7°C (46°F) and an average of 20°C (68°F). Notably, both months can reach a maximum of 37°C (99°F), but December sees significantly more precipitation, with 111 mm (4.4 in) over 16 days, compared to just 38 mm (1.5 in) over 6 days in September. Humidity levels remain quite high in both months, peaking at 84% in December and slightly lower at 85% in September. For more detailed information, you can visit Manzini weather in September.

In comparing the weather between December and October, December tends to be warmer with average temperatures reaching 23°C (75°F), while October has a cooler average of 20°C (69°F). December also experiences higher maximum temperatures, peaking at 37°C (99°F) compared to October's maximum of 38°C (100°F). However, October sees slightly less precipitation at 73 mm (2.9 in) over 12 days, whereas December has 111 mm (4.4 in) over 16 days, contributing to a more humid atmosphere in December with 84% humidity compared to October's 85%. For more details, visit Manzini weather in October.

In comparing the weather between November and December, it is evident that both months are characterized by relatively warm temperatures and significant humidity. December sees a minimum temperature of 14°C (57°F) and an average of 23°C (75°F), while November starts slightly cooler with a minimum of 12°C (53°F) and an average of 22°C (72°F). Notably, December also experiences a slightly higher maximum temperature of 37°C (99°F) compared to November's peak of 39°C (102°F).

Precipitation levels are comparable, with December receiving 111 mm (4.4 in) over 16 days, while November has slightly less rain at 104 mm (4.1 in) over 13 days. Humidity remains high in both months, with December at 84% and November at 85%. For those looking for more details on November’s conditions, you can refer to Manzini weather in November.

Compare Manzini's Climate with Cities Worldwide

Conclusion: What to Expect From December Weather in Manzini

As December unfolds in Manzini, the weather presents a striking contrast to earlier months. With temperatures soaring to highs of 37°C (99°F), it's a time for warm summer days, though nights can be refreshingly cool. The month is notably marked by its increased humidity, sitting at a notable 84%—a characteristic that often brings about a noticeable atmosphere. While rainfall is common, accumulating around 111 mm over 16 days, the showers bring respite and help to green the landscape as the holiday season approaches. This blend of heat and moisture creates a vibrant, lively environment, making December a unique month in the Manzini climate. For a deeper dive into the region's weather patterns, visit Manzini Climate.