Climate averages 1991–2020
Tanga weather
in September.
A hot, moderately wet month: the 8th warmest and the joint 4th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
September is a hot month in Tanga: daytime highs average 28.5°C and nights cool to about 21.6°C. By daytime temperature it is the 8th warmest of the 12 months.
Expect about 40 mm of rain on roughly 14 days, which makes September a moderately wet month (the joint 4th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 04 min on an average September day.
The nearest other city in this atlas is Ukunda (101 km away). In September its highs average 27.1°C, 1.4°C cooler than Tanga, with 52 mm of rain.
Among the 43 cities listed in Tanzania, Tanga ranks joint 20th of 43 for the warmest September highs and 35th of 43 for the driest September (rainfall, lowest first). The mean September high of those 43 cities is 28.0°C; Tanga is 0.6°C warmer than that mean.
From September to October, average highs rise by 0.8°C to 29.3°C, and monthly rainfall rises from 40 mm to 87 mm.
The annual picture
September 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
Tanga climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 32.6°C25.1°C | 25.1°C | 31 | 8.1 | 12.412 h |
| February | 32.9°C25.2°C | 25.2°C | 31 | 6.4 | 12.312 h |
| March | 32.1°C25.1°C | 25.1°C | 87 | 18.9 | 12.112 h |
| April | 29.7°C24.3°C | 24.3°C | 148 | 23.3 | 12.012 h |
| May | 28.0°C23.2°C | 23.2°C | 165 | 18.4 | 11.912 h |
| June | 27.4°C22.0°C | 22.0°C | 44 | 11.7 | 11.812 h |
| July | 27.1°C21.2°C | 21.2°C | 35 | 11.2 | 11.912 h |
| August | 27.5°C21.0°C | 21.0°C | 40 | 12.9 | 11.912 h |
| September, selected | 28.5°C21.6°C | 21.6°C | 40 | 13.5 | 12.112 h |
| October | 29.3°C22.5°C | 22.5°C | 87 | 16.2 | 12.212 h |
| November | 29.9°C23.5°C | 23.5°C | 84 | 19.2 | 12.312 h |
| December | 31.4°C24.5°C | 24.5°C | 68 | 16.5 | 12.412 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
September in nearby cities
- Ukunda in SeptemberKenya · 101 kmHigh 27.1°C · Low 22.6°C · 52 mm rain
- Matuga in SeptemberKenya · 113 kmHigh 26.5°C · Low 22.0°C · 52 mm rain
- Zanzibar in SeptemberTanzania · 122 kmHigh 28.5°C · Low 23.1°C · 19 mm rain
- Handeni in SeptemberTanzania · 126 kmHigh 26.1°C · Low 17.9°C · 38 mm rain
- Mombasa in SeptemberKenya · 129 kmHigh 27.7°C · Low 22.6°C · 43 mm rain
- Jomvu in SeptemberKenya · 133 kmHigh 28.4°C · Low 22.2°C · 38 mm rain
- Mtwapa in SeptemberKenya · 145 kmHigh 28.4°C · Low 22.6°C · 43 mm rain
- Bagamoyo in SeptemberTanzania · 154 kmHigh 29.7°C · Low 21.4°C · 19 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 Tanga) is explained once on the Tanga year overview and on the Sources, method and limits page.