Climate and monthly weather forecastMahamba, Swaziland

Climate and monthly weather forecast

The climate of Mahamba

The predominant climate of Mahamba, Swaziland, adheres to the Köppen climate classification Cfa, defined by a humid subtropical climate with no dry season. Extensive climatological data suggests that the region experiences temperature highs ranging from 19.4°C (66.9°F) to 26.3°C (79.3°F), with the warmest months occurring in November to February. The low temperatures stay comfortably between 5.6°C (42.1°F) to 15.2°C (59.4°F), with coldest months from June to August.

A significant factor defining Mahamba's climate is its rainfall. The region sees a marginally higher volume of rainfall from November to February, and its lowest from May to August. Rainfall ranges from 3mm (0.12") to 105mm (4.13") monthly, with the number of rainy days varying dramatically from 2.6 days in June to 23 days in January. Humidity follows a similar pattern, increasing during the wetter winter months and decreasing in the drier warmer seasons.

Cloud coverage follows this rainfall pattern, with the cloudiest months coinciding with the highest precipitation and the opposite during dryer months. Daylight hours decrease slightly from 10.5 hours in June to 13.8 hours in December, and the average UV Index hovers between 4 and 6 throughout the year. The visibility remains more or less constant, with only slight decreases during the wet season.

Wrap up the climate by discussing winds and atmospheric pressure, Mahamba experiences wind speeds from approximately 6.7km/h (4.2mph) to 9.4km/h (5.8mph) and gusts up to 16.3km/h (10.1mph). Pressure varies slightly with the highest readings during the drier months and lower during the rainy season.

The best time to visit Mahamba

Judging by the patterns apparent within climatic data, the best time to visit Mahamba seems most desirable from April to October. These months present less extreme conditions with rainfall at its lowest, from 3mm (0.12") to 40mm (1.57"), and the number of rainy days dropping to below 13 days a month. The temperature ranges from a comfortable 19.5°C (67.1°F) to 25°C (77°F) with lower humidity levels.

The worst time to visit Mahamba

From November through February, Mahamba experiences its wettest season, with higher humidity levels. Rainfall increases to as much as 105mm (4.13") in January with up to 23 rainy days a month. Coupled with the higher temperatures, this period may offer conditions less suited for certain touristic activities.

Spring weather in Mahamba

During spring, which encompasses September, October, and November, rainfall stays between 11mm (0.43") to 72mm (2.83"). The temperature tends to hover around 21.8°C (71.2°F) to 25.5°C (77.9°F) during these months, presenting favorable conditions for outdoor activities.

Summer weather in Mahamba

The summer months of December, January, and February bring the highest temperatures between 25.1°C (77.2°F) to 26.3°C (79.3°F). However, this period sees the heaviest rainfall with volumes reaching up to 105mm (4.13") in January and high humidity, potentially hampering plans of outdoor exploration.

Autumn weather in Mahamba

Autumn time in Mahamba, which consists of March, April, and May, provides more balanced weather. Rainfall decreases to a range between 40mm (1.57") to 62mm (2.44"), and temperatures stay between 19.5°C (67.1°F) to 22.4°C (72.3°F). Slightly less cloud cover is also noticed in this period.

Winter weather in Mahamba

The chilliest season is felt in June, July, and August, as the winter in Mahamba sets in. The observed temperature plunge down to a low of 5.6°C (42.1°F) and reach up only as far as 19.4°C (66.9°F) on average. However, it's also the season with the least rainfall, presenting a conducive environment for outdoor activities despite the colder conditions.

Weather in January

Mahamba, Swaziland's first month of the year is marked by warm temperatures and considerable humidity. Conditions, however, are slightly more humid and rainier as compared to the following month of February. It is common to encounter cloudy skies, with clouds covering around 57% of the sky. Weather in January »

Weather in February

The weather conditions in Mahamba trend towards a decline in rainfall in February. As the month progresses, fewer rain days are witnessed, hinting at the transition toward the dryer months. Daylight hours decrease slightly to an average of 13 hours. Weather in February »

Weather in March

With a slight decrease in temperature and humidity, March's weather offers a reprieve from the heat. The rain showers give way to more hours of sunshine, rendering these days more pleasant for outdoor activities. There's reduced cloud cover, implying clearer skies. Weather in March »

Weather in April

Coming right after March, April contributes to the momentum of declining rainfall and is the onset of drier and cooler conditions. With decreasing cloud cover, the skies appear much clearer. This openness in the sky permits more sunlight - which is a significant plus for solar panels. Weather in April »

Weather in May

May brings a perceptible decrease in temperature, considerably less than the previous month, April. As a result, a mild chill starts to become evident, especially during the wee hours. The decrease in rainfall and relative humidity brings a less rainy and humid ambiance to the air. Weather in May »

Weather in June

Looking at the weather in Mahamba, Swaziland, June is undeniably colder relative to the previous months. This month signals the start of chilly nights and cool days. Residents are likely to enjoy a pleasant amount of sunshine despite it being the coolest month. Weather in June »

Weather in July

July's weather continues the trend set by June but with lower humidity and a pleasant chill in the air atmosphere. However, there is a slight bump in daylight hours which adds a tinge of warmth. Despite July being the one of the cooler months, it is noticeable for its low average rainfall, recorded at a mere 3mm (0.12"). Weather in July »

Weather in August

With winter coming to a close, August ushers in warmer temperatures. More sunshine hours coupled with warmer temperatures make this month a good time for outdoor activities. As compared to the preceding month of July, the winds are slightly stronger. Weather in August »

Weather in September

September marks a transition to milder temperatures in the city of Mahamba. The increase in cloud cover signals the conjectural existence of impending monsoons. An increase in daylight hours returns, illuminating the city for longer periods. Weather in September »

Weather in October

October displays a marked increase in temperature, hinting at the onset of "summery" conditions. With an increase in cloud cover, the city experiences more frequent rain episodes. Remarkably, the average daylight extends to a 12.7-hour average. Weather in October »

Weather in November

November is marked by further warming, translating to hot days and warm nights. The escalating temperatures are accompanied by more days of rainfall. Consistent with these patterns, cloud cover increases signifying a move into the rainy season. Weather in November »

Weather in December

Concluding the calendar year in Mahamba, Swaziland, December exhibits more warmth, heightened by the highest levels of daylight throughout the year. The frequent rainfall contributes to the more humid, tropical feel of the city. Weather in December »

Updated: Jun 3, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

The months with the highest humidity are January through March, with an average relative humidity of 82%.

The month with the most rainfall is January, when the rain falls for 23 days and typically aggregates up to 105mm (4.13") of precipitation.

In Mahamba, during the entire year, the rain falls for 145.6 days and collects up to 538mm (21.18") of precipitation.

April has the least sunshine of the year in Mahamba, with an average of 6.6h of sunshine.

April through July, with an average maximum UV index of 4, are months with the lowest UV index.

With an average of 10h and 30min of daylight, June has the shortest days of the year.

In Mahamba, July is the coldest month, with temperatures averaging a high of 19.4°C (66.9°F) and a low of 5.6°C (42.1°F).

The month with the least rainfall is July, when the rain falls for 3.3 days and typically collects 3mm (0.12") of precipitation.

The least humid month is August, with an average relative humidity of 54%.

October has the most sunshine of the year, with an average of 9.5h of sunshine.

The month with the highest UV index is November, with an average maximum UV index of 6.

December registers as the month with the average highest temperatures, reaching 26.3°C (79.3°F) at its peak and 15.2°C (59.4°F) at the lowest.

December has the longest days of the year, with an average of 13h and 48min of daylight.

Mahamba does not observe Daylight Saving Time (DST). SAST timezone is used throughout the entire year.

Today

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Long-term

Year J F M A M J J A S O N D

Average temperature
Mahamba, Swaziland

Average high temperature in January:
25.7°C
Average high temperature in February:
25.7°C
Average high temperature in March:
25.1°C
Average high temperature in April:
22.4°C
Average high temperature in May:
21.8°C
Average high temperature in June:
19.5°C

Average high temperature in July:
19.4°C
Average high temperature in August:
22.3°C
Average high temperature in September:
25°C
Average high temperature in October:
24.5°C
Average high temperature in November:
25.5°C
Average high temperature in December:
26.3°C

The warmest month (with the highest average high temperature) is December (26.3°C).
The month with the lowest average high temperature is July (19.4°C).

Average low temperature in January:
15.2°C
Average low temperature in February:
14.6°C
Average low temperature in March:
13.1°C
Average low temperature in April:
10.5°C
Average low temperature in May:
8.3°C
Average low temperature in June:
5.7°C

Average low temperature in July:
5.6°C
Average low temperature in August:
7.8°C
Average low temperature in September:
11.1°C
Average low temperature in October:
12.8°C
Average low temperature in November:
14°C
Average low temperature in December:
15.2°C

The months with the highest average low temperature are January and December (15.2°C).
The coldest month (with the lowest average low temperature) is July (5.6°C).

Average pressure
Mahamba, Swaziland

Average pressure in January:
1014.4mbar
Average pressure in February:
1014.9mbar
Average pressure in March:
1016.6mbar
Average pressure in April:
1019.3mbar
Average pressure in May:
1020.7mbar
Average pressure in June:
1022.8mbar

Average pressure in July:
1024.3mbar
Average pressure in August:
1021.4mbar
Average pressure in September:
1019.3mbar
Average pressure in October:
1017.3mbar
Average pressure in November:
1015.5mbar
Average pressure in December:
1014.4mbar

The month with the highest atmospheric pressure is July (1024.3mbar).
The months with the lowest atmospheric pressure are January and December (1014.4mbar).

Average wind speed
Mahamba, Swaziland

Average wind speed in July:
8.7km/h
Average wind speed in August:
8.9km/h
Average wind speed in September:
9.4km/h
Average wind speed in October:
9.1km/h
Average wind speed in November:
8.7km/h
Average wind speed in December:
7.7km/h

The windiest months (with the highest average wind speed) are June and September (9.4km/h).
The calmest month (with the lowest average wind speed) is March (6.7km/h).

Average humidity
Mahamba, Swaziland

The months with the highest relative humidity are January, February and March (82%).
The month with the lowest relative humidity is August (54%).

Average rainfall
Mahamba, Swaziland

The wettest month (with the highest rainfall) is January (105mm).
The driest month (with the least rainfall) is July (3mm).

Average rainfall days
Mahamba, Swaziland

Average rainfall days in January:
23 days
Average rainfall days in February:
19 days
Average rainfall days in March:
17.9 days
Average rainfall days in April:
12.9 days
Average rainfall days in May:
4.9 days
Average rainfall days in June:
2.6 days

Average rainfall days in July:
3.3 days
Average rainfall days in August:
3.7 days
Average rainfall days in September:
6.7 days
Average rainfall days in October:
12.7 days
Average rainfall days in November:
17.6 days
Average rainfall days in December:
21.3 days

The month with the highest number of rainy days is January (23 days).
The month with the least rainy days is June (2.6 days).

Average daylight / Average sunshine
Mahamba, Swaziland

Average daylight in January:
13h and 36min
Average daylight in February:
13h and 0min
Average daylight in March:
12h and 12min
Average daylight in April:
11h and 24min
Average daylight in May:
10h and 48min
Average daylight in June:
10h and 30min

Average daylight in July:
10h and 36min
Average daylight in August:
11h and 12min
Average daylight in September:
11h and 54min
Average daylight in October:
12h and 42min
Average daylight in November:
13h and 24min
Average daylight in December:
13h and 48min

The month with the longest days is December (Average daylight: 13h and 48min).
The month with the shortest days is June (Average daylight: 10h and 30min).

Average sunshine in January:
8h and 36min
Average sunshine in February:
8h and 54min
Average sunshine in March:
8h and 30min
Average sunshine in April:
6h and 36min
Average sunshine in May:
7h and 24min
Average sunshine in June:
7h and 24min

Average sunshine in July:
7h and 30min
Average sunshine in August:
7h and 12min
Average sunshine in September:
8h and 12min
Average sunshine in October:
9h and 30min
Average sunshine in November:
9h and 24min
Average sunshine in December:
9h and 0min

The month with the most sunshine is October (Average sunshine: 9h and 30min).
The month with the least sunshine is April (Average sunshine: 6h and 36min).