Climate and monthly weather forecast
Boma, Democratic Republic of Congo

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The climate of Boma

Nestled in the heart of the Democratic Republic of Congo, Boma experiences a predominant Köppen climate classification of Aw, commonly known as Tropical wet and dry or savanna climate. This type of climate is characterized by significant monthly variations in temperature and rainfall, creating a diverse range of weather patterns throughout the year.

Fluctuations in the temperature levels are relatively mild. Monthly average highs remain fairly consistent, wavering slightly between 30.2°C (86.4°F) and 32.1°C (89.8°F). In the same vein, average lows maintain a steady range from 19.3°C (66.7°F) to 23.3°C (73.9°F). A consistent humidity level is maintained throughout the year, peaking at 85% while not dropping less than 69%, lending the air a constant, palpable moisture.

Rainfall is a significant climatic factor in Boma, with monthly averages varying from a sparse 2mm (0.08") in July to a hefty 194mm (7.64") in December. Correspondingly, the number of rainy days per month ranges from 4.2 to 29.5. On the flip side of cloudiness, sunshine hours per day also exhibit variations, peaking at 8.6 hours in July and decreasing to 5.6 hours in October.

Strong winds are an occasional feature of Boma's weather, with wind speed experiencing a gentle increase from 5.4 Kph at the start of the year to 9.3 Kph in September and then tapering off again towards the end of the year. Pressure ranges from 1010Mb to 1014.3Mb in the course of the year, indicating a relatively stable atmospheric condition.

The best time to visit Boma

Given the combination of weather elements, June to August emerge as the most favourable months to visit Boma. During this period, the region experiences less rainfall, ranging from 2mm (0.08") to 6mm (0.24"), and the number of rainy days is significantly lower, making outdoor adventures possible. Additionally, these months also witness a good amount of sunshine, approximately 8.2-8.6 hours per day, which is inviting for tourists aiming to explore the city’s attractions. The average temperatures during these months hover between 19.3°C (66.7°F) and 30.9°C (87.6°F), comfortable for travelers.

The worst time to visit Boma

It would be advisable to avoid planning a visit to Boma during the wettest months, namely November and December. During these months, the rainfall significantly increases, reaching up to 194mm (7.64"), leading to a higher number of rainy days, thus limiting outdoor activities. Also, the higher relative humidity of up to 85% during these months could lead to potential discomfort, especially for visitors not accustomed to humid environments.

Spring weather in Boma

Spring in Boma from March to May is characterized by slightly higher temperatures ranging from 23.3°C (73.9°F) to 32.1°C (89.8°F) and an increase in rainfall levels. While March receives an average of 122mm (4.8") rainfall spread over 26.3 days, in May, the rainfall decreases to 89mm (3.5") over 22.8 days. The duration of sunshine decreases from 7.7 hours in March to 6.5 hours by May.

Summer weather in Boma

The summer months of June, July, and August represent the driest period of the year in Boma. Temperatures range from 19.3°C (66.7°F) to 30.9°C (87.6°F), while rainfall decreases significantly, from 6mm (0.24") in June to 2mm (0.08") in July, increasing slightly to 4mm (0.16") in August. This period also enjoys the highest number of sunshine hours, ranging from 8.2 to 8.6 hours per day.

Autumn weather in Boma

Autumn, spanning from September to November, sees a gradual increase in rainfall, with September recording 12mm (0.47"), October 89mm (3.5"), and November a high of 173mm (6.81"). During these months, the number of rainy days increases progressively from 10.9 to 26.7. Average temperatures fluctuate from 21.5°C (70.7°F) to 30.6°C (87.1°F). Despite increased rainfall, the area still enjoys moderate sunshine hours, ranging from 7.4 hours to 5.6 hours per day.

Winter weather in Boma

Winter in Boma, particularly in December, is characterized by the highest rainfall levels, reaching 194mm (7.64") over 29.5 rainy days. The temperature maintains a steady range from 22.8°C (73°F) to 30.2°C (86.4°F). Despite being the wettest month, December still witnesses daylight for 12.5 hours with sunshine enduring for an average of 7.4 hours.

Weather in January

Begin the year in Boma, Democratic Republic of Congo with high humidity, registering at an average of 84%. This contributes to the misty, tropical atmosphere, underscored by the warm temperature range. It's not all sunshine, however, as there are numerous rainy days. Weather in January »

Weather in February

February in Boma ushers in a slight change in climatic conditions from the month prior. A noteworthy pattern, the average rainfall decreases to 131mm (5.16") making the days drier. Yet, the overall weather remains balmy with temperatures regularly reaching more than 30°C (86°F). Weather in February »

Weather in March

March maintains a bright and sunlit weather characteristic in Boma. A unique weather pattern surfaces this month, accommodating the highest maximum temperatures of the year peaking at 32.1°C (89.8°F). Consequently, while the days are sunny and hot, the rainfall takes a minor step back but is still pretty frequent. Weather in March »

Weather in April

Come April, Boma's weather transitions subtly, signaling the onset of slight atmospheric changes. Complimenting these changes, the rainfall increases to 156mm (6.14"). Comparatively, it receives more precipitation than the following month. Weather in April »

Weather in May

In May, Boma's weather begins to transform markedly, showing a different side to its tropical climate. A significant dip in rainfall to 89mm (3.5") is indicative of the beginning of Boma's dry season. Besides, there's a small reduction in the average temperature, though it is scarcely perceptible to the naked eye. Weather in May »

Weather in June

June, the middle of the year, brings a distinctive weather pattern in Boma. Notably, it holds the least amount of rainfall, a modest 6mm (0.24"), the cloud cover decreases significantly too. The dry period in June lends itself to a surge in sunshine hours per day with less cloudy skies. Weather in June »

Weather in July

July maintains the dry weather pattern noted in June; however, the climatic conditions in Boma take on a few modifications. The least number of rainy days occur in July, registering at a mere 4.2 days. With reduced cloud cover, the number of sunshine hours per day increases slightly. Weather in July »

Weather in August

In August through Boma's climate continues mostly dry, some alterations are visible. Although the rainfall increases to 4mm (0.16") from July, it is still below the yearly average. The heat is consistent, with temperatures hovering around the 30°C (86°F) mark. Weather in August »

Weather in September

September ushers in a shift in the dry weather pattern that Boma has experienced in the previous months. Rainfall notably increases to 12mm (0.47"), though remaining below the yearly average. Consistent with the trend, a rise in temperature gets witnessed without substantial variation from August. Weather in September »

Weather in October

Boma in October experiences a weather shift ushering in a wetter season. The rainfall jumps substantially to 89mm (3.5"), aligned with previous weather trends. As the rainfall increases, the temperatures and weather conditions experience minor fluctuations from the prior month. Weather in October »

Weather in November

November in Boma reinforces the wet season that began in October. It takes precedence, registering the second-highest rainfall of the year at a considerable 173mm (6.81"). The wind speed reduces slightly from October, adding to the damp environment of the city. Weather in November »

Weather in December

December rounds off the year in Boma, keeping the wet weather pattern consistent. It stands out with the most precipitation, a significant 194mm (7.64"), marking its peak in the annual rainfall pattern. Despite the surge in rainfall, the temperature and weather conditions don't differ significantly from November. Weather in December »

Frequently asked questions

How many days does it rain?

In Boma, during the entire year, the rain falls for 232.2 days and collects up to 1150mm (45.28") of precipitation.

What is the month with the highest UV index?

The months with the highest UV index are January, March through May, September and November, with an average maximum UV index of 7.

What are the months with the lowest UV index?

The months with the lowest UV index are February, June through August, October and December, with an average maximum UV index of 6.

What is the warmest month?

March, with average temperatures reaching a high of 32.1°C (89.8°F) and a low of 23.3°C (73.9°F), is the warmest month.

What are the most humid months?

April and December, with an average relative humidity of 85%, are most humid months.

What is the month with the shortest days?

With an average of 11h and 48min of daylight, June has the shortest days of the year.

What is the driest month?

July is the month with the least rainfall. Rain falls for 4.2 days and accumulates 2mm (0.08") of precipitation.

What month has the most sunshine?

July has the most sunshine of the year, with an average of 8.6h of sunshine.

What is the least humid month?

August is the least humid month, with an average relative humidity of 69%.

What is the month with the least sunshine?

With an average of 5.6h of sunshine, October has the least sunshine of the year.

What part of the year is the coldest?

December, marked by an average high-temperature of 30.2°C (86.4°F) and a low-temperature of 22.8°C (73°F), is the coldest month.

What is the rainiest month?

December is the month with the most rainfall. Rain falls for 29.5 days and accumulates 194mm (7.64") of precipitation.

When are the longest days?

With an average of 12h and 30min of daylight, December has the longest days of the year.

Is there Daylight Saving Time (DST) in Boma?

Boma does not utilize Daylight Saving Time (DST). WAT timezone is used over the entire year.

Average temperature
Boma, Democratic Republic of Congo

Average temperature - Boma, Democratic Republic of Congo

The warmest month (with the highest average high temperature) is March (32.1°C).
The month with the lowest average high temperature is December (30.2°C).

The months with the highest average low temperature are February, March and April (23.3°C).
The coldest month (with the lowest average low temperature) is July (19.3°C).

Average pressure
Boma, Democratic Republic of Congo

Average pressure - Boma, Democratic Republic of Congo

The month with the highest atmospheric pressure is July (1014.3mbar).
The month with the lowest atmospheric pressure is February (1010mbar).

Average wind speed
Boma, Democratic Republic of Congo

Average wind speed - Boma, Democratic Republic of Congo

The windiest month (with the highest average wind speed) is September (9.3km/h).
The calmest month (with the lowest average wind speed) is April (5.1km/h).

Average humidity
Boma, Democratic Republic of Congo

Average humidity - Boma, Democratic Republic of Congo

The months with the highest relative humidity are April and December (85%).
The month with the lowest relative humidity is August (69%).

Average rainfall
Boma, Democratic Republic of Congo

Average rainfall - Boma, Democratic Republic of Congo

The wettest month (with the highest rainfall) is December (194mm).
The driest month (with the least rainfall) is July (2mm).

Average rainfall days
Boma, Democratic Republic of Congo

Average rainfall days - Boma, Democratic Republic of Congo

The month with the highest number of rainy days is December (29.5 days).
The month with the least rainy days is July (4.2 days).

Average daylight / Average sunshine
Boma, Democratic Republic of Congo

Average daylight / Average sunshine - Boma, Democratic Republic of Congo

The month with the longest days is December (Average daylight: 12h and 30min).
The month with the shortest days is June (Average daylight: 11h and 48min).

The month with the most sunshine is July (Average sunshine: 8h and 36min).
The month with the least sunshine is October (Average sunshine: 5h and 36min).

Average sunshine days
Boma, Democratic Republic of Congo

Average sunshine days - Boma, Democratic Republic of Congo

The month with the most sunshine days is July (23.3 days).
The months with the least sunshine days are January and December (0.8 days).

Average UV index
Boma, Democratic Republic of Congo

Average UV index - Boma, Democratic Republic of Congo

The months with the highest UV index are January, March, April, May, September and November (UV index 7).
The months with the lowest UV index are February, June, July, August, October and December (UV index 6).

Average visibility
Boma, Democratic Republic of Congo

Average visibility - Boma, Democratic Republic of Congo

The months with the highest visibility are July, August and September (10km).
The month with the lowest visibility is April (7km).

Boma, Democratic Republic of Congo

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