Climate averages 1991–2020
Boma weather
in May.
A hot, moderately wet month: the 8th warmest and the 6th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
May is a hot month in Boma: daytime highs average 29.5°C and nights cool to about 23.3°C. By daytime temperature it is the 8th warmest of the 12 months.
Expect about 63 mm of rain on roughly 12 days, which makes May a moderately wet month (the 6th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 11 h 51 min on an average May day.
The nearest other city in this atlas is Matadi (45 km away). In May its highs average 29.0°C, about as warm as Boma, with 68 mm of rain.
Among the 60 cities listed in the Democratic Republic of the Congo, Boma ranks joint 32nd of 60 for the warmest May highs and 26th of 60 for the driest May (rainfall, lowest first). The mean May high of those 60 cities is 29.2°C; Boma is 0.3°C warmer than that mean.
From May to June, average highs fall by 1.4°C to 28.0°C, and monthly rainfall falls from 63 mm to 3.1 mm.
The annual picture
May in context
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Boma climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 30.1°C23.5°C | 23.5°C | 176 | 21.9 | 12.412 h |
| February | 30.5°C23.9°C | 23.9°C | 146 | 19.3 | 12.312 h |
| March | 30.8°C24.2°C | 24.2°C | 147 | 20.4 | 12.112 h |
| April | 30.3°C24.2°C | 24.2°C | 184 | 22.1 | 12.012 h |
| May, selected | 29.5°C23.3°C | 23.3°C | 63 | 11.6 | 11.912 h |
| June | 28.0°C20.4°C | 20.4°C | 3.1 | 0.4 | 11.812 h |
| July | 27.4°C18.8°C | 18.8°C | 2.2 | 0.1 | 11.812 h |
| August | 27.2°C19.2°C | 19.2°C | 5.5 | 0.8 | 11.912 h |
| September | 28.2°C20.8°C | 20.8°C | 12 | 2.6 | 12.112 h |
| October | 29.7°C22.7°C | 22.7°C | 52 | 10.4 | 12.212 h |
| November | 30.1°C23.5°C | 23.5°C | 155 | 22.0 | 12.412 h |
| December | 29.8°C23.5°C | 23.5°C | 187 | 23.4 | 12.512 h |
Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
May in nearby cities
- Matadi in MayDemocratic Republic of the Congo · 45 kmHigh 29.0°C · Low 22.8°C · 68 mm rain
- Moanda, Democratic Republic of the Congo in MayDemocratic Republic of the Congo · 76 kmHigh 27.7°C · Low 23.8°C · 28 mm rain
- Soyo in MayAngola · 82 kmHigh 26.9°C · Low 24.6°C · 25 mm rain
- Cabinda in MayAngola · 100 kmHigh 27.6°C · Low 24.1°C · 70 mm rain
- Mbanza Kongo in MayAngola · 139 kmHigh 28.2°C · Low 20.8°C · 90 mm rain
- Kimpese in MayDemocratic Republic of the Congo · 156 kmHigh 29.5°C · Low 22.1°C · 69 mm rain
- Pointe-Noire in MayRepublic of the Congo · 178 kmHigh 28.0°C · Low 23.7°C · 38 mm rain
- Nkayi in MayRepublic of the Congo · 187 kmHigh 30.2°C · Low 22.8°C · 69 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Boma) is explained once on the Boma year overview and on the Sources, method and limits page.