Climate averages 1991–2020
Bariadi weather
by month.
See how the year changes. September has the highest average daily maximum; July has the lowest average monthly rainfall.
Pleasant-weather months by our simple rule: MayJuneJuly
Long-term climate patterns, not a forecast for a particular trip.
Across the year Bariadi averages a daytime high of 28.4°C and a nighttime low of 18.0°C, with about 894 mm of rain on roughly 125 days. September is the warmest month (average high 30.3°C) and April the coolest (27.0°C). December is the wettest month with 148 mm; July is the driest with 3.3 mm.
Months with pleasant weather by a simple rule (average high between 18°C and 29°C, average low of at least 5°C and at most 8 rain days): May, June and July. This looks at temperature and rain only, not humidity, wind, sea temperature or crowds.
The annual picture
A year in Bariadi
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
Bariadi climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 27.2°C18.0°C | 18.0°C | 118 | 16.1 | 12.312 h |
| February | 28.3°C18.3°C | 18.3°C | 93 | 13.8 | 12.212 h |
| March | 28.2°C18.3°C | 18.3°C | 134 | 16.9 | 12.112 h |
| April | 27.0°C17.9°C | 17.9°C | 135 | 17.4 | 12.012 h |
| May | 27.8°C18.0°C | 18.0°C | 42 | 7.9 | 12.012 h |
| June | 28.4°C17.7°C | 17.7°C | 7.1 | 1.9 | 12.012 h |
| July | 28.6°C17.0°C | 17.0°C | 3.3 | 0.5 | 12.012 h |
| August | 29.3°C17.5°C | 17.5°C | 11 | 2.4 | 12.012 h |
| September | 30.3°C18.5°C | 18.5°C | 20 | 4.2 | 12.112 h |
| October | 30.0°C18.9°C | 18.9°C | 56 | 9.7 | 12.212 h |
| November | 28.1°C18.4°C | 18.4°C | 128 | 16.0 | 12.212 h |
| December | 27.2°C18.1°C | 18.1°C | 148 | 18.3 | 12.312 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
Nearby cities
- BundaTanzania · 87 kmHigh 27.4°C · Low 18.2°C · 1,191 mm rain a year
- ShinyangaTanzania · 115 kmHigh 29.5°C · Low 19.0°C · 591 mm rain a year
- MwanzaTanzania · 124 kmHigh 25.4°C · Low 20.8°C · 1,642 mm rain a year
- MusomaTanzania · 146 kmHigh 26.2°C · Low 19.9°C · 1,209 mm rain a year
- SengeremaTanzania · 149 kmHigh 26.8°C · Low 17.8°C · 1,125 mm rain a year
- TarimeTanzania · 167 kmHigh 27.3°C · Low 16.3°C · 1,083 mm rain a year
- NzegaTanzania · 181 kmHigh 28.6°C · Low 18.2°C · 705 mm rain a year
- KahamaTanzania · 192 kmHigh 28.2°C · Low 18.3°C · 762 mm rain a year
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 limitsWhat do the high and low temperatures mean?
We average the daily maximum and daily minimum for each calendar month over 1991–2020. They are not record extremes, a forecast range or temperatures at a fixed time of day.
How is a rain day counted?
A local calendar day (standard time, UTC+3, no daylight saving) with at least 1 mm of total precipitation counts as one rain day. We count these for each year and month, then average across 30 years. The average does not predict which days will be wet.
Where do the numbers come from?
ERA5-Land (temperature) and ERA5 (precipitation) reanalysis from the Copernicus Climate Change Service, read from the Open-Meteo open-data archive. Temperature comes from the 0.1° model cell at -2.80°, 34.00° (2 km from the city centre), adjusted up by 0.3°C for the difference between the city's elevation (1,282 m) and the cell's (1,323 m). Rain comes from the 0.25° cell at -2.75°, 34.00°. These are model estimates, not weather-station readings; coast, hills and city streets can differ.
Does this page show sunshine, humidity or sea temperature?
No. The data used here contain air temperature and precipitation only. Daylight hours are calculated from the city's latitude (sunrise to sunset), not measured sunshine.