Climate averages 1991–2020
Tianguá weather
in September.
A hot, very dry month: the 3rd warmest and the driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
September is a hot month in Tianguá: daytime highs average 30.9°C and nights cool to about 19.6°C. By daytime temperature it is the 3rd warmest of the 12 months.
Expect about 1.2 mm of rain on fewer than one day, which makes September a very dry month (the driest month of the year). Daylight, from sunrise to sunset, lasts about 12 h 05 min on an average September day.
The nearest other city in this atlas is Sobral (71 km away). In September its highs average 35.5°C, 4.6°C warmer than Tianguá, with 1.0 mm of rain.
Among the 448 cities listed in Brazil, Tianguá ranks 100th of 448 for the warmest September highs and joint 9th of 448 for the driest September (rainfall, lowest first). The mean September high of those 448 cities is 27.5°C; Tianguá is 3.3°C warmer than that mean.
From September to October, average highs rise by 0.5°C to 31.3°C, and monthly rainfall rises from 1.2 mm to 11 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
Tianguá climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 28.0°C20.1°C | 20.1°C | 141 | 17.8 | 12.312 h |
| February | 27.1°C19.9°C | 19.9°C | 164 | 20.5 | 12.212 h |
| March | 26.7°C19.9°C | 19.9°C | 239 | 25.3 | 12.112 h |
| April | 26.4°C19.8°C | 19.8°C | 239 | 23.3 | 12.012 h |
| May | 26.8°C19.7°C | 19.7°C | 96 | 14.3 | 11.912 h |
| June | 27.2°C19.4°C | 19.4°C | 23 | 5.6 | 11.912 h |
| July | 28.1°C19.1°C | 19.1°C | 9.2 | 2.0 | 11.912 h |
| August | 29.6°C19.2°C | 19.2°C | 3.4 | 0.6 | 12.012 h |
| September, selected | 30.9°C19.6°C | 19.6°C | 1.2 | 0.3 | 12.112 h |
| October | 31.3°C20.0°C | 20.0°C | 11 | 0.8 | 12.212 h |
| November | 31.1°C20.3°C | 20.3°C | 8.2 | 1.3 | 12.312 h |
| December | 30.0°C20.4°C | 20.4°C | 32 | 5.8 | 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
September in nearby cities
- Sobral in SeptemberBrazil · 71 kmHigh 35.5°C · Low 23.9°C · 1.0 mm rain
- Parnaíba in SeptemberBrazil · 127 kmHigh 33.8°C · Low 25.0°C · 1.1 mm rain
- Itapipoca in SeptemberBrazil · 159 kmHigh 34.1°C · Low 24.0°C · 2.7 mm rain
- Crateús in SeptemberBrazil · 165 kmHigh 34.3°C · Low 22.5°C · 1.3 mm rain
- Canindé in SeptemberBrazil · 199 kmHigh 34.1°C · Low 22.7°C · 0.8 mm rain
- Quixeramobim in SeptemberBrazil · 249 kmHigh 34.4°C · Low 23.1°C · 1.7 mm rain
- Teresina in SeptemberBrazil · 251 kmHigh 36.5°C · Low 24.1°C · 3.3 mm rain
- Maranguape in SeptemberBrazil · 256 kmHigh 32.2°C · Low 23.9°C · 2.6 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 Tianguá) is explained once on the Tianguá year overview and on the Sources, method and limits page.