Climate averages 1991–2020
Assis weather
in September.
A warm, wet month: the 7th warmest and the 6th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
September is a warm month in Assis: daytime highs average 27.6°C and nights cool to about 16.8°C. By daytime temperature it is the 7th warmest of the 12 months.
Expect about 92 mm of rain on roughly 8 days, which makes September a wet month (the 6th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 11 h 57 min on an average September day.
The nearest other city in this atlas is Ourinhos (66 km away). In September its highs average 27.7°C, about as warm as Assis, with 84 mm of rain.
Among the 448 cities listed in Brazil, Assis ranks joint 207th of 448 for the warmest September highs and joint 335th of 448 for the driest September (rainfall, lowest first). The mean September high of those 448 cities is 27.5°C; Assis is 0.1°C warmer than that mean.
From September to October, average highs rise by 0.6°C to 28.3°C, and monthly rainfall rises from 92 mm to 132 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
Assis climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 28.1°C20.8°C | 20.8°C | 247 | 21.4 | 13.413 h |
| February | 28.2°C20.7°C | 20.7°C | 198 | 19.1 | 12.913 h |
| March | 27.8°C20.0°C | 20.0°C | 141 | 16.6 | 12.212 h |
| April | 26.9°C18.2°C | 18.2°C | 68 | 7.5 | 11.612 h |
| May | 24.0°C15.3°C | 15.3°C | 74 | 7.2 | 11.011 h |
| June | 23.3°C14.2°C | 14.2°C | 61 | 5.8 | 10.811 h |
| July | 23.6°C13.7°C | 13.7°C | 41 | 4.4 | 10.911 h |
| August | 25.9°C14.8°C | 14.8°C | 45 | 4.2 | 11.311 h |
| September, selected | 27.6°C16.8°C | 16.8°C | 92 | 8.1 | 11.912 h |
| October | 28.3°C18.5°C | 18.5°C | 132 | 12.7 | 12.613 h |
| November | 28.1°C19.1°C | 19.1°C | 149 | 13.8 | 13.213 h |
| December | 28.4°C20.3°C | 20.3°C | 189 | 18.6 | 13.513 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
- Ourinhos in SeptemberBrazil · 66 kmHigh 27.7°C · Low 16.6°C · 84 mm rain
- Marília in SeptemberBrazil · 69 kmHigh 28.0°C · Low 16.9°C · 69 mm rain
- Londrina in SeptemberBrazil · 105 kmHigh 26.3°C · Low 15.3°C · 119 mm rain
- Cambé in SeptemberBrazil · 112 kmHigh 26.1°C · Low 15.2°C · 119 mm rain
- Presidente Prudente in SeptemberBrazil · 117 kmHigh 29.2°C · Low 18.3°C · 94 mm rain
- Rolândia in SeptemberBrazil · 122 kmHigh 25.9°C · Low 15.2°C · 119 mm rain
- Lins in SeptemberBrazil · 129 kmHigh 30.3°C · Low 18.8°C · 61 mm rain
- Arapongas in SeptemberBrazil · 134 kmHigh 25.4°C · Low 14.7°C · 126 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 Assis) is explained once on the Assis year overview and on the Sources, method and limits page.