Yearly & Monthly weather - Aru, Democratic Republic of Congo

The climate of Aru

Located in the Democratic Republic of Congo, Aru experiences a tropical wet and dry or savanna type of climate, classified as 'Aw' according to the Köppen climate classification. This climate type is defined by substantial monthly temperature variations and contrasting wet and dry seasons.

Exploring the data, it is evident the temperatures in Aru range from 26.7°C (80.1°F) to 33.4°C (92.1°F) on the higher side and from 17.1°C (62.8°F) to 20.8°C (69.4°F) on the lower side, indicating a consistently warm year-round climate. Examining relative humidity, it escalates progressively through the year from a low of 38% up until August where it hits peak at 82%, then starts to subside once again.

Rainfall is another significant factor in Aru's climate. Patterns suggest the year is split between a pronounced rainy season and a considerably dry season. It stays relatively dry from January to March, with rainfall averages not exceeding 43mm (1.69"). Subsequently, from April to November, Aru receives substantial rainfall ranging from 108mm (4.25") to 226mm (8.9") per month. November seems to be particularly damp with the heaviest average rainfall of 226mm (8.9"). Then, the annual rainfall closes on a drier note in December with just 22mm (0.87").

Predictably, higher amounts of rain correspond with more rain days, fluctuating from as low as 3.1 days in January to as high as 29.7 days in August. It is also reflected in cloud cover, which escalates from 10% in January to a peak of 41% in August before descending again towards the end of the year.

Sunshine trend is also noteworthy. There is relatively consistent daylight across the whole year, averaging around 12 hours a day. However, actual sunshine hours fluctuate markedly, ranging from a high of 9.9 hours in January to a low of 8.5 hours in August, reflecting the influence of the rainy season.

The best time to visit Aru

The best time to visit Aru would ideally be during the dry months when rainfall and humidity are relatively low, the temperatures are somewhat cooler, and sunshine duration is maximised. Between January and March, temperatures fall within an optimal range of 32.5°C (90.5°F) to 29.7°C (85.5°F) on the high-end and 19.3°C (66.7°F) to 20.7°C (69.3°F) on the lower end, which is generally comfortable for outdoor activities and exploration. With sunlight hours resting at a considerable 9.9 hours a day and lower cloud cover of around 10 to 22%, visitors can expect bright and sunny days, especially in January and February.

The worst time to visit Aru

Travelling to Aru during the months of August and October might not be an ideal decision due to high rainfall, with average monthly rain reaching 194mm (7.64") in August and 226mm (8.9") in October. With rain days surpassing 28 through these months, there is a high chance of encountering rain on any given day. Moreover, the cloud cover peaks at around 41%, and this high concentration of cloud cover does affect the sunshine hours which sink to a low point of the year, averaging 8.5 hours a day. Thus, outdoor activities and sightseeing could be heavily disrupted during this time.

Spring weather in Aru

Spring months in Aru, from September through November, while not as wet as the summer, do still experience considerable rainfall which can vary from 167mm (6.57") to 226mm (8.9") across each month. Temperatures, however, remain relatively pleasant hovering from a high of 27.5°C (81.5°F) to 27.8°C (82°F) and a low of 17.5°C (63.5°F) to 18.1°C (64.6°F). This period sees some improvement in sunlight hours compared to the summer months, increasing to an average of 9.1 hours per day in September and 9.2 hours per day in November.

Summer weather in Aru

Aru’s summer season, spanning June to August, is marked by the highest levels of rainfall and humidity of the year. In this period, rainfall amounts shoot up to between 164mm (6.46") to 194mm (7.64") per month. Concurrently, relative humidity rises, reaching 80% to 82%, and average temperatures sit between 26.7°C (80.1°F) to 27.4°C (81.3°F) at the high end and 17.1°C (62.8°F) on the lower end. These months see the least sunshine hours of the year, dipping to a yearly low of 8.5 hours per day.

Autumn weather in Aru

Aru’s autumn period between December and February is characterized by drier conditions, with rainfall drastically dropping to between 3mm (0.12") and 43mm (1.69"). This period is suitable for outdoor activities and exploration as temperatures at their highest range from 29.9°C (85.8°F) to 33.4°C (92.1°F) and at the lowest range from 18.5°C (65.3°F) to 20.8°C (69.4°F). Sunshine duration extends to 9.9 hours on average per day making this period optimally bright and sunny.

Winter weather in Aru

Winter in Aru, spanning March till May, signals the beginning of the wet season. Rainfall commences a perceptible rise from 43mm (1.69") in March to a heavy 177mm (6.97") in May. Yet, relative humidity remains within a tolerable range from 54% to 78%. Temperatures during these months sit at a comfortable bracket of 28.3°C (82.9°F) to 32.3°C (90.1°F) on the high end and 18.3°C (64.9°F) to 20.7°C (69.3°F) on the lower end. Sunlight hours start to dwindle wider the influence of increasing cloud cover, falling from 9.6 hours per day in March to 8.7 hours per day by May's end.

Weather in January

January kicks off with mild temperatures, and the city of Aru experiences balmy weather. Despite the welcoming warmth, it's essential to stay hydrated as relative humidity measures at 38%. The daylight period, measuring 12 hours, barely fluctuates throughout the month, indicating a consistent pattern of sunlight and darkness. Weather in January »

Weather in February

The weather in Aru in February showcases a mild rise in temperature, further enhancing the warmth introduced in January. There is a similar pattern of daylight and sunshine hours as witnessed in January. The weather in Aru during this month is also characterized by a slight increase in rainfall, indicating a transition to the wetter months ahead. Weather in February »

Weather in March

Entering March, a significant shift in weather patterns begins, with a notable increase in rainfall, reaching 43mm (1.69"). In terms of temperature, the changes are less drastic, with a slight drop compared to February. The period of daylight remains almost static, just like the previous months. Weather in March »

Weather in April

The drastic shift in weather, apparent in March, continues into April. This time, the city of Aru experiences massively increased rainfall, reaching an average of 109mm (4.29"), thus April becomes the onset of the long wet season in Congo. Weather in April »

Weather in May

May holds the banner of the wettest month in Aru, with a maximum rainfall of 177mm (6.97"). Temperature ranges remain relatively constant, with the warmth persisting. Relative humidity reaches a high level due to ongoing rains, making it quite comfortless without the right attire. Weather in May »

Weather in June

June is characterized by sustained rainfall, with little to no decrease compared to May. Similarly, temperatures also remain steady, with warmth persisting in the city of Aru despite the rainy season. A decrease in wind speed down to 6.1 Kph is noted during this month. Weather in June »

Weather in July

July continues with the established weather pattern, including high rainfall and stable temperatures. The wind speed drops slightly to 5.5 Kph, providing a calmer environment despite the continuing rainfall. The consistent atmospheric pressure, sitting at 1013.3mb, indicates the maintenance of the ongoing climatic trend. Weather in July »

Weather in August

August, although still part of the long wet season, begins to hint at a moderation in rainfall. Yet, this month has the highest relative humidity of 82%. A slight decrease in visibility to 8km (5mi) is noted due to the persistent rain and high moister content in air. Weather in August »

Weather in September

September stands as a turning point in the weather in Aru, with reduced rainfall and a slight dip in average temperature. The climate is more bearable with temperatures of 27.5°C (81.5°F), and the heavy rain less frequent. More sunshine hours, measuring nearly 9.1 hours, grace the city, lighting up the days beautifully. Weather in September »

Weather in October

Weather in October continues the pattern set in September, with a consistent dip in rainfall and a slight rise in temperature. The city of Aru witnesses a considerable spike in rainfall to 226mm (8.9"), a notable climatic twist in October. Weather in October »

Weather in November

Heading into November, the weather in Aru exhibits a marked reduction in rainfall to 108mm (4.25"), relieving the city from the heavy showers experienced in October. A slight rise in sunshine hours is observed, offering brighter days. Weather in November »

Weather in December

In December, Aru witnesses a significant drop in rainfall, down to just 22mm (0.87"), bringing back the drier season. Simultaneously, a rise in temperature clears the trails of the wet season by bringing in warmth. Consistent daylight accompanies the reducing rainfall levels, infusing more brightness into the shorter days. Weather in December »

Updated: Feb 7, 2024 | Published by: Weather Atlas | About Us / Weather Forecasting / Data Sources

Frequently asked questions

What is the least humid month in Aru?

The least humid month is January, with an average relative humidity of 38%.

What is the driest month in Aru?

January is the month with the least rainfall in Aru. Rain falls for 3.1 days and accumulates 3mm (0.12") of precipitation.

How many days does it rain in Aru?

Throughout the year, there are 235.5 rainfall days, and 1389mm (54.69") of precipitation is accumulated.

What is the month with the most sunshine in Aru?

January and February, with an average of 9.9h of sunshine, are months with the most sunshine.

When is the highest UV index in Aru?

January, February and December, with an average maximum UV index of 7, are months with the highest UV index in Aru, Democratic Republic of Congo.

What month is the hottest in Aru?

February registers as the month with the average highest temperatures, reaching 33.4°C (92.1°F) at its peak and 20.8°C (69.4°F) at the lowest.

When are the longest days in Aru?

With an average of 12h and 18min of daylight, June has the longest days of the year in Aru, Democratic Republic of Congo.

What is the coldest month in Aru?

July brings the lowest temperatures, with an average high of 26.7°C (80.1°F) and an average low of 17.1°C (62.8°F).

What is the most humid month in Aru?

August is the most humid month, with an average relative humidity of 82%.

What is the month with the least sunshine in Aru?

With an average of 8.5h of sunshine, August has the least sunshine of the year in Aru, Democratic Republic of Congo.

When is the lowest UV index in Aru?

August is the month with the lowest UV index, with an average maximum UV index of 5.

What is the rainiest month in Aru?

October is the month with the most rainfall in Aru, Democratic Republic of Congo. Rain falls for 28.6 days and accumulates 226mm (8.9") of precipitation.

What is the month with the shortest days in Aru?

With an average of 12h and 0min of daylight, December has the shortest days of the year in Aru.

Is there Daylight Saving Time (DST) in Aru?

Aru, Democratic Republic of Congo, does not utilize Daylight Saving Time (DST). CAT timezone is used throughout the entire year.

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Long-term

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

Average temperature
Aru, Democratic Republic of Congo

Average high temperature in January:
32.5°C
Average high temperature in February:
33.4°C
Average high temperature in March:
32.3°C
Average high temperature in April:
29.7°C
Average high temperature in May:
28.3°C
Average high temperature in June:
27.4°C

Average high temperature in July:
26.7°C
Average high temperature in August:
26.9°C
Average high temperature in September:
27.5°C
Average high temperature in October:
27.2°C
Average high temperature in November:
27.8°C
Average high temperature in December:
29.9°C

The warmest month (with the highest average high temperature) is February (33.4°C).
The month with the lowest average high temperature is July (26.7°C).

Average low temperature in January:
19.3°C
Average low temperature in February:
20.8°C
Average low temperature in March:
20.7°C
Average low temperature in April:
19.3°C
Average low temperature in May:
18.3°C
Average low temperature in June:
17.6°C

Average low temperature in July:
17.1°C
Average low temperature in August:
17.1°C
Average low temperature in September:
17.5°C
Average low temperature in October:
17.9°C
Average low temperature in November:
18.1°C
Average low temperature in December:
18.5°C

The month with the highest average low temperature is February (20.8°C).
The coldest months (with the lowest average low temperature) are July and August (17.1°C).

Average pressure
Aru, Democratic Republic of Congo

Average pressure in January:
1010mbar
Average pressure in February:
1008.7mbar
Average pressure in March:
1009.4mbar
Average pressure in April:
1010.5mbar
Average pressure in May:
1011.9mbar
Average pressure in June:
1013.2mbar

Average pressure in July:
1013.3mbar
Average pressure in August:
1012.8mbar
Average pressure in September:
1012.2mbar
Average pressure in October:
1011mbar
Average pressure in November:
1010.6mbar
Average pressure in December:
1010.5mbar

The month with the highest atmospheric pressure is July (1013.3mbar).
The month with the lowest atmospheric pressure is February (1008.7mbar).

Average wind speed
Aru, Democratic Republic of Congo

Average wind speed in July:
5.5km/h
Average wind speed in August:
5.3km/h
Average wind speed in September:
5.5km/h
Average wind speed in October:
6km/h
Average wind speed in November:
6.3km/h
Average wind speed in December:
6.9km/h

The windiest month (with the highest average wind speed) is February (8.6km/h).
The calmest month (with the lowest average wind speed) is August (5.3km/h).

Average humidity
Aru, Democratic Republic of Congo

The month with the highest relative humidity is August (82%).
The month with the lowest relative humidity is January (38%).

Average rainfall
Aru, Democratic Republic of Congo

The wettest month (with the highest rainfall) is October (226mm).
The driest month (with the least rainfall) is January (3mm).

Average rainfall days
Aru, Democratic Republic of Congo

Average rainfall days in January:
3.1 days
Average rainfall days in February:
4.5 days
Average rainfall days in March:
13.4 days
Average rainfall days in April:
21.5 days
Average rainfall days in May:
26.5 days
Average rainfall days in June:
25.8 days

Average rainfall days in July:
28.3 days
Average rainfall days in August:
29.7 days
Average rainfall days in September:
28.9 days
Average rainfall days in October:
28.6 days
Average rainfall days in November:
18.3 days
Average rainfall days in December:
6.9 days

The month with the highest number of rainy days is August (29.7 days).
The month with the least rainy days is January (3.1 days).

Average daylight / Average sunshine
Aru, Democratic Republic of Congo

Average daylight in January:
12h and 0min
Average daylight in February:
12h and 0min
Average daylight in March:
12h and 1min
Average daylight in April:
12h and 1min
Average daylight in May:
12h and 2min
Average daylight in June:
12h and 2min

Average daylight in July:
12h and 2min
Average daylight in August:
12h and 1min
Average daylight in September:
12h and 1min
Average daylight in October:
12h and 1min
Average daylight in November:
12h and 0min
Average daylight in December:
12h and 0min

The month with the longest days is June (Average daylight: 12h and 18min).
The month with the shortest days is December (Average daylight: 12h and 0min).

Average sunshine in January:
9h and 5min
Average sunshine in February:
9h and 5min
Average sunshine in March:
9h and 4min
Average sunshine in April:
9h and 0min
Average sunshine in May:
8h and 4min
Average sunshine in June:
8h and 4min

Average sunshine in July:
8h and 4min
Average sunshine in August:
8h and 3min
Average sunshine in September:
9h and 1min
Average sunshine in October:
8h and 4min
Average sunshine in November:
9h and 1min
Average sunshine in December:
9h and 4min

The months with the most sunshine are January and February (Average sunshine: 9h and 54min).
The month with the least sunshine is August (Average sunshine: 8h and 30min).

Average sunshine days
Aru, Democratic Republic of Congo

Average sunshine days in January:
27.8 days
Average sunshine days in February:
22.1 days
Average sunshine days in March:
15.3 days
Average sunshine days in April:
5.8 days
Average sunshine days in May:
2.4 days
Average sunshine days in June:
1.8 days

Average sunshine days in July:
1.8 days
Average sunshine days in August:
0.2 days
Average sunshine days in September:
0.4 days
Average sunshine days in October:
1.5 days
Average sunshine days in November:
9.3 days
Average sunshine days in December:
23.3 days

The month with the most sunshine days is January (27.8 days).
The month with the least sunshine days is August (0.2 days).

Average UV index
Aru, Democratic Republic of Congo

The months with the highest UV index are January, February and December (UV index 7).
The month with the lowest UV index is August (UV index 5).

Average cloud cover
Aru, Democratic Republic of Congo

The month with the most cloud cover is August (Cloud cover 41).
The month with the least cloud cover is January (Cloud cover 10).

Average visibility
Aru, Democratic Republic of Congo

The months with the highest visibility are January, February, March and December (10km).
The months with the lowest visibility are July, August, September and October (8km).

Climate and monthly weather forecastAru, Democratic Republic of Congo

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