Boma climate
Boma (DR Congo) has a tropical savanna (dry winter) climate (Köppen Aw). The average temperature over the year is 27 °C80 °F, and about 1,034 mm41 in of precipitation falls in an average year.
Temperature by month
Precipitation by month
Boma climate table
| Month | High °C°F | Low °C°F | Mean °C°F | Precip. mmin |
|---|---|---|---|---|
| Jan | 3188 | 2475 | 2781 | 1084.3 |
| Feb | 3289 | 2475 | 2882 | 1124.4 |
| Mar | 3289 | 2475 | 2882 | 1586.2 |
| Apr | 3187 | 2475 | 2781 | 1526.0 |
| May | 3188 | 2373 | 2781 | 1014.0 |
| Jun | 3188 | 2068 | 2678 | 60.2 |
| Jul | 3188 | 1966 | 2577 | 00.0 |
| Aug | 3188 | 1967 | 2578 | 50.2 |
| Sep | 3391 | 2170 | 2781 | 190.8 |
| Oct | 3391 | 2373 | 2882 | 943.7 |
| Nov | 3188 | 2374 | 2781 | 1475.8 |
| Dec | 3187 | 2374 | 2781 | 1325.2 |
| Year | 3391 | 1966 | 2780 | 1,03441 |
“Year” row: highest monthly high, lowest monthly low, annual mean and annual total.
| Month | Humid. | Cloud | Solar | Daylight |
|---|---|---|---|---|
| Jan | 82% | 85% | 4.6 | 12:25 |
| Feb | 82% | 84% | 4.8 | 12:18 |
| Mar | 82% | 81% | 5.1 | 12:09 |
| Apr | 85% | 83% | 4.6 | 11:59 |
| May | 83% | 75% | 3.8 | 11:51 |
| Jun | 76% | 69% | 3.4 | 11:47 |
| Jul | 73% | 67% | 3.4 | 11:49 |
| Aug | 70% | 71% | 3.4 | 11:55 |
| Sep | 68% | 73% | 3.4 | 12:05 |
| Oct | 73% | 82% | 3.5 | 12:15 |
| Nov | 81% | 84% | 4.3 | 12:23 |
| Dec | 82% | 87% | 4.2 | 12:28 |
Humid. = average relative humidity at 2 m; cloud = average cloud amount; solar = average daily solar energy reaching the ground in kWh/m² (all-sky); daylight in hours:minutes, calculated for the 15th of each month.
What the climate of Boma is like
The warmest month is March, with an average high of 32 °C89 °F and a low of 24 °C75 °F. The coldest is July, when highs average 31 °C88 °F and lows 19 °C66 °F. Temperatures barely change through the year: the warmest and the coolest month differ by only 2.9 °C5.2 °F.
It is wet, with about 1,034 mm41 in of precipitation per year. The wettest three-month stretch is February–April, which brings 41% of the annual total. Months with less than 20 mm0.8 in on average: June–September. The wettest month is March (158 mm6.2 in), the driest is July (0 mm0.0 in).
Relative humidity ranges from 68% in September to 85% in April. The clearest skies (lowest average cloud amount, 67%) are typical of July. Average wind speed near the ground ranges from 3 km/h (2 mph) in April to 7 km/h (4 mph) in September.
Best time to visit Boma
Based on these averages, the most comfortable months for sightseeing and outdoor activities are June–August: average highs of 31 °C88 °F to 31 °C88 °F with 0 mm0.0 in to 6 mm0.2 in of precipitation per month.
The most challenging month is March, which is hot, with average highs of 32 °C89 °F, very wet (158 mm6.2 in) and humid (82% relative humidity).
Comfort score: months are ranked by how close they come to an average high of 21–28 °C (70–82 °F), lows above 5 °C (41 °F), little precipitation and moderate humidity. The best-ranked months of each place are recommended, even where none meets all of these. These are general rules of thumb applied to long-term averages.
What to pack for Boma
- Wetter months (October–May) — highs 3187 to 33 °C91 °F, lows 2373 to 24 °C75 °F, about 126 mm4.9 in of precipitation a month. Pack very light, breathable clothing, a sun hat and plenty of water and an umbrella or light rain jacket.
- Drier months (June–September) — highs 3188 to 33 °C91 °F, lows 1966 to 21 °C70 °F, about 7 mm0.3 in of precipitation a month. Pack very light, breathable clothing, a sun hat and plenty of water.
How Boma compares
Compared with Matadi, about 45 km to the east, Boma is on average 0.5 °C0.9 °F warmer and receives 5% less precipitation (1,034 mm41 in vs 1,094 mm43 in). The difference is largest in December (0.9 °C1.7 °F warmer).
Of the 36 places in the DR Congo covered by World Climates, Boma is the warmest by annual mean temperature and the 34th wettest by annual precipitation. See all of them on the DR Congo climate page.
Places in other countries with the most similar temperature and rainfall pattern: Cabinda (Angola, Aw), Soyo (Angola, Aw) and Nkayi (Republic of the Congo, Aw).
Nearby places
- Matadi 45 km · 26 °C79 °F · 1,094 mm43 in
- Moanda 76 km · 26 °C79 °F · 907 mm36 in
- Soyo 82 km · 26 °C79 °F · 907 mm36 in
- Cabinda 100 km · 26 °C79 °F · 1,085 mm43 in
- Mbanza Kongo 139 km · 25 °C77 °F · 1,109 mm44 in
- Pointe-Noire 178 km · 25 °C78 °F · 1,010 mm40 in
- Nkayi 187 km · 26 °C78 °F · 1,669 mm66 in
- Dolisie 189 km · 25 °C76 °F · 1,520 mm60 in
Frequently asked questions
What is the warmest month in Boma?
March is the warmest month in Boma, with an average high of 32 °C (89 °F) and an average low of 24 °C (75 °F).
What is the coldest month in Boma?
July is the coldest month, with an average high of 31 °C (88 °F) and an average low of 19 °C (66 °F).
When does it rain the most in Boma?
March is the wettest month with about 158 mm (6.2 in) of precipitation; July is the driest with about 0 mm (0.0 in).
What is the best time to visit Boma?
Judging by long-term averages, the most comfortable months are June–August.
About this data
All figures are 25-year averages (January 2001 – December 2025) from the NASA POWER project. Temperature, humidity, wind and precipitation come from the MERRA-2 reanalysis (precipitation is the bias-corrected MERRA-2 product), cloud and solar values from CERES satellite data. They describe a grid cell of roughly 50–70 km, not a single weather station, so they can differ from airport records — most of all on coasts, in mountains and for rainfall. Average highs and lows are the monthly mean temperature plus/minus half of the average daily temperature range. Counts of rainy days are not part of this dataset.
The grid cell’s average elevation is 155 m, while Boma lies at about 11 m. Temperatures on this page were therefore adjusted by +0.9 °C1.7 °F using the standard lapse rate of 6.5 °C per 1,000 m.