Climate averages 1991–2020
Isiro weather
in May.
A warm, wet month: the 6th warmest and the 7th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
May is a warm month in Isiro: daytime highs average 27.6°C and nights cool to about 20.4°C. By daytime temperature it is the 6th warmest of the 12 months.
Expect about 152 mm of rain on roughly 24 days, which makes May a wet month (the 7th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 15 min on an average May day.
The nearest other city in this atlas is Bakwa (152 km away). In May its highs average 28.9°C, 1.2°C warmer than Isiro, with 155 mm of rain.
Among the 60 cities listed in the Democratic Republic of the Congo, Isiro ranks joint 45th of 60 for the warmest May highs and 58th of 60 for the driest May (rainfall, lowest first). The mean May high of those 60 cities is 29.2°C; Isiro is 1.6°C cooler than that mean.
From May to June, average highs fall by 0.7°C to 27.0°C, and monthly rainfall falls from 152 mm to 134 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
Isiro climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 31.1°C19.9°C | 19.9°C | 37 | 6.6 | 12.012 h |
| February | 31.6°C20.6°C | 20.6°C | 61 | 9.8 | 12.012 h |
| March | 29.8°C20.7°C | 20.7°C | 146 | 20.2 | 12.112 h |
| April | 28.1°C20.6°C | 20.6°C | 188 | 23.9 | 12.212 h |
| May, selected | 27.6°C20.4°C | 20.4°C | 152 | 24.4 | 12.212 h |
| June | 27.0°C19.8°C | 19.8°C | 134 | 23.9 | 12.312 h |
| July | 26.6°C19.4°C | 19.4°C | 149 | 25.2 | 12.312 h |
| August | 26.7°C19.3°C | 19.3°C | 178 | 26.2 | 12.212 h |
| September | 27.1°C19.5°C | 19.5°C | 190 | 26.4 | 12.112 h |
| October | 26.7°C19.6°C | 19.6°C | 229 | 28.3 | 12.112 h |
| November | 27.2°C19.6°C | 19.6°C | 201 | 24.0 | 12.012 h |
| December | 29.1°C19.6°C | 19.6°C | 58 | 10.1 | 12.012 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
- Bakwa in MayDemocratic Republic of the Congo · 152 kmHigh 28.9°C · Low 21.5°C · 155 mm rain
- Babamba in MayDemocratic Republic of the Congo · 288 kmHigh 27.6°C · Low 20.2°C · 177 mm rain
- Hyosha in MayDemocratic Republic of the Congo · 313 kmHigh 26.5°C · Low 17.5°C · 137 mm rain
- Buta in MayDemocratic Republic of the Congo · 321 kmHigh 29.9°C · Low 22.3°C · 125 mm rain
- Bunia in MayDemocratic Republic of the Congo · 323 kmHigh 26.2°C · Low 18.2°C · 84 mm rain
- Butembo in MayDemocratic Republic of the Congo · 347 kmHigh 23.3°C · Low 15.3°C · 142 mm rain
- Arua in MayUganda · 367 kmHigh 27.4°C · Low 18.6°C · 70 mm rain
- Kisangani in MayDemocratic Republic of the Congo · 368 kmHigh 29.3°C · Low 22.7°C · 122 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 Isiro) is explained once on the Isiro year overview and on the Sources, method and limits page.