South Sudan is demanding in every month. No month rates better than marginal on heat and rainfall together, so the trip is about tolerating the conditions rather than avoiding them.
Two rainy seasons
| Month | High °C | High °F | Rainy days | Verdict |
|---|---|---|---|---|
| January | 37.6 | 100 | 6% | Too hot |
| February | 39.0 | 102 | 7% | Too hot |
| March | 38.7 | 102 | 15% | Too hot |
| April | 36.7 | 98 | 38% | Too hot |
| May | 33.6 | 92 | 68% | Too hot |
| June | 31.8 | 89 | 68% | Too wet |
| July | 30.4 | 87 | 74% | Too wet |
| August | 30.5 | 87 | 78% | Too wet |
| September | 32.3 | 90 | 64% | Too wet |
| October | 32.7 | 91 | 64% | Too wet |
| November | 34.0 | 93 | 31% | Too hot |
| December | 36.1 | 97 | 12% | Too hot |
Verdict combines mean daytime high with rainy-day frequency. “Rainy days” is the share of days in the month with at least 1 mm of rain.
January is the driest month, with rain on 6% of days and daytime highs near 37.6°C (100°F). August is the wettest, at 78%. The warmest month is February at 39.0°C (102°F); the coolest is July at 30.4°C (87°F). The record rules out too hot in Nov–May; too wet in Jun–Oct.