Weather in Dodoma in September
Tanzania · 20-year averages, September
Prime time. September is about as good as Dodoma gets. Highs average 31.5 °C, lows 15.4 °C, and rain falls on 0 days — nothing in the month is working against you.
September ranks 5 of 12 in Dodoma: past the worst of the year but short of June, which is the month to book if the dates are open.
Rain is not a factor worth planning around this month. Pack for 31.5 °C days and 15.4 °C nights; the spread matters more here than any single number.
What the averages hide
Averages flatten a month, and this one hides a few things: 27 days top 30 °C, making the heat continuous rather than occasional; the day swings 16.1 °C from low to high, which means one bag has to cover both. Across the twenty years measured, the hottest September day reached 35.6 °C and the coldest night fell to 11.5 °C.
September is dependably dry, and that reliability is the point: across the twenty years measured, the wettest September on record still only managed 3 mm, and the driest managed 0 mm. There is no meaningful variability to plan around, which makes this one of the few months anywhere that you can build a fixed outdoor itinerary against without a fallback. The wettest single day in twenty years of Septembers brought 2 mm. Rain simply is not the variable that decides this trip — heat, crowds and cost are.
Wind sits around 16.1 km/h — a steady breeze rather than a nuisance, and welcome on the warmer days, and humidity is unremarkable at 53%.
How September sits in the year
Temperatures hold steady either side: 29.3 °C in August, 31.5 here, 32.9 in October. Nothing about the timing within the month matters much.
Daylight in September
Dodoma sits close enough to the equator that daylight barely moves all year — 12.1 hours in September, against a range of just 0.7 hours across the whole calendar. Sunrise and sunset land at roughly the same time whenever you come.
An inland climate
Despite being inland, the year stays fairly even: 19.8 °C between the year's warmest afternoons and coldest nights. At 1125 m the air is thin enough to matter — sun that burns faster than the temperature suggests, and nights that cool off quickly. Within September itself the daily swing is 16.1 °C, so mornings and afternoons need different clothes.
How busy it gets
Shoulder. The value months — prices ease off and you get the place closer to itself.
Crowd levels are estimated from climate desirability and school-holiday calendars, not from visitor numbers.
September in Dodoma versus nearby
If Dodoma is one option among several, the nearby comparison is worth making. Zanzibar is close enough to be a coin toss — 3.7 °C cooler, 5 days more rain. Dar es Salaam is close enough to be a coin toss — 2.7 °C cooler, 5 days more rain.
So: September works, with June the better month by 16 points if the dates can move. If they cannot, nothing here should stop you booking.
Every month in Dodoma
| Month | High °C | Low °C | Rain days | Rain mm | Humidity % | Daylight h | Score |
|---|---|---|---|---|---|---|---|
| January | 28.3 | 18.1 | 20 | 184 | 74 | 12.4 | 59 |
| February | 28.7 | 17.9 | 16 | 107 | 73 | 12.3 | 63 |
| March | 28.6 | 17.9 | 19 | 120 | 75 | 12.1 | 58 |
| April | 28.4 | 17.5 | 17 | 78 | 76 | 12 | 65 |
| May | 28.8 | 16 | 5 | 16 | 69 | 11.8 | 84 |
| June | 28 | 13.9 | 0 | 2 | 63 | 11.8 | 96 |
| July | 27.8 | 13.1 | 0 | 1 | 59 | 11.8 | 96 |
| August | 29.3 | 14.2 | 0 | 0 | 56 | 11.9 | 90 |
| September | 31.5 | 15.4 | 0 | 1 | 53 | 12.1 | 80 |
| October | 32.9 | 17 | 2 | 9 | 52 | 12.2 | 70 |
| November | 32.8 | 18.2 | 8 | 47 | 56 | 12.4 | 60 |
| December | 30.4 | 18.6 | 17 | 163 | 66 | 12.5 | 51 |
See all twelve months in Dodoma, or where else to go in September.
Planning the rest of the trip
- Flight time to Dodoma how long you are actually in the air
- Dodoma time zone and the difference from home
- Days until your trip count down to the departure date