East Africa Regional Profile
Tanzania
Sensitive Rain Seasons
- Vuli rains (October–December): Short rains in northern and coastal areas; typically enhanced during strong El Niño.
- Masika rains (March–May): Long rains; can sustain residual elevated river discharges.
Primary Environmental Hazards
- • Severe river flooding along the Rufiji, Ruvu, and Pangani river basins
- • Urban flash floods and storm-water backup in Dar es Salaam
- • Damage to transport networks linking the port of Dar es Salaam to landlocked interior nations
- • Increased transmission of malaria and diarrhoeal water-borne diseases
Current 2026–27 El Niño Context for Tanzania
Tanzania's northern highlands and coastal regions face enhanced precipitation probabilities and heightened riverine discharge through late 2026.
Major Monitored River Basins in Tanzania
Rufiji River Basin
7.95° S, 38.98° ELargest drainage basin in Tanzania; site of major hydropower and extensive delta farming.
Ruvu River Basin
6.72° S, 38.87° ESupplies freshwater to Dar es Salaam; highly sensitive to flash surges.
Monitored Cities in Tanzania
Select any city below for real-time temperature, 7-day rainfall forecasts, and live flood risk score:
Dar es Salaam
6.8° S, 39.2° EDodoma
6.2° S, 35.8° EArusha
3.4° S, 36.7° EMwanza
2.5° S, 32.9° ETanga
5.1° S, 39.1° EMorogoro
6.8° S, 37.7° EMbeya
8.9° S, 33.5° EHistorical El Niño Events in Tanzania
1997–98 Event
Record Vuli rains flooded coastal lowlands and paralyzed transportation between Morogoro and Dar es Salaam.
2023–24 Event
Flooding and landslides impacted Hanang and surrounding central-northern agricultural districts.