Climate averages 1991–2020
Caxias weather
in September.
A very hot, very dry month: the 2nd warmest and the 2nd driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
September is a very hot month in Caxias: daytime highs average 36.1°C and nights cool to about 23.9°C. By daytime temperature it is the 2nd warmest of the 12 months.
Expect about 5.0 mm of rain on roughly 1 day, which makes September a very dry month (the 2nd driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 05 min on an average September day.
The nearest other city in this atlas is Teresina (67 km away). In September its highs average 36.5°C, about as warm as Caxias, with 3.3 mm of rain.
Among the 448 cities listed in Brazil, Caxias ranks 2nd of 448 for the warmest September highs and 34th of 448 for the driest September (rainfall, lowest first). The mean September high of those 448 cities is 27.5°C; Caxias is 8.5°C warmer than that mean.
From September to October, average highs rise by 0.2°C to 36.3°C, and monthly rainfall rises from 5.0 mm to 14 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
Caxias climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 30.4°C23.1°C | 23.1°C | 236 | 24.3 | 12.412 h |
| February | 29.8°C22.9°C | 22.9°C | 274 | 23.6 | 12.312 h |
| March | 29.6°C22.8°C | 22.8°C | 345 | 27.9 | 12.112 h |
| April | 29.6°C22.9°C | 22.9°C | 282 | 25.3 | 12.012 h |
| May | 30.5°C23.0°C | 23.0°C | 128 | 14.9 | 11.912 h |
| June | 32.3°C23.1°C | 23.1°C | 22 | 4.4 | 11.812 h |
| July | 33.3°C23.1°C | 23.1°C | 10 | 1.8 | 11.912 h |
| August | 34.8°C23.3°C | 23.3°C | 3.0 | 0.5 | 12.012 h |
| September, selected | 36.1°C23.9°C | 23.9°C | 5.0 | 1.1 | 12.112 h |
| October | 36.3°C24.4°C | 24.4°C | 14 | 2.4 | 12.212 h |
| November | 34.8°C24.5°C | 24.5°C | 47 | 7.1 | 12.312 h |
| December | 33.1°C24.1°C | 24.1°C | 103 | 13.0 | 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
- Teresina in SeptemberBrazil · 67 kmHigh 36.5°C · Low 24.1°C · 3.3 mm rain
- Codó in SeptemberBrazil · 74 kmHigh 35.2°C · Low 24.2°C · 6.2 mm rain
- Chapadinha in SeptemberBrazil · 124 kmHigh 34.9°C · Low 24.2°C · 3.5 mm rain
- Bacabal in SeptemberBrazil · 173 kmHigh 34.9°C · Low 24.7°C · 7.4 mm rain
- Barra do Corda in SeptemberBrazil · 221 kmHigh 34.9°C · Low 23.9°C · 10 mm rain
- Santa Inês in SeptemberBrazil · 261 kmHigh 34.0°C · Low 24.3°C · 12 mm rain
- São José de Ribamar in SeptemberBrazil · 268 kmHigh 30.1°C · Low 25.8°C · 11 mm rain
- Parnaíba in SeptemberBrazil · 279 kmHigh 33.8°C · Low 25.0°C · 1.1 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 Caxias) is explained once on the Caxias year overview and on the Sources, method and limits page.