Climate averages 1991–2020
Castro weather
in August.
A mild, moderately wet month: the 9th warmest and the 2nd driest of the year. Meets the pleasant-weather rule
Long-term climate patterns, not a forecast for a particular trip.
August is a mild month in Castro: daytime highs average 20.7°C and nights cool to about 10.8°C. By daytime temperature it is the 9th warmest of the 12 months.
Expect about 72 mm of rain on roughly 7 days, which makes August a moderately wet month (the 2nd driest of the 12 months). Daylight, from sunrise to sunset, lasts about 11 h 15 min on an average August day.
The nearest other city in this atlas is Ponta Grossa (37 km away). In August its highs average 20.5°C, about as warm as Castro, with 72 mm of rain.
Among the 448 cities listed in Brazil, Castro ranks joint 404th of 448 for the warmest August highs and joint 351st of 448 for the driest August (rainfall, lowest first). The mean August high of those 448 cities is 26.2°C; Castro is 5.5°C cooler than that mean.
From August to September, average highs rise by 1.4°C to 22.1°C, and monthly rainfall rises from 72 mm to 127 mm.
The annual picture
August 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
Castro climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 25.3°C17.8°C | 17.8°C | 235 | 23.7 | 13.513 h |
| February | 25.2°C17.8°C | 17.8°C | 180 | 21.1 | 12.913 h |
| March | 24.4°C16.9°C | 16.9°C | 133 | 18.0 | 12.212 h |
| April | 23.0°C14.9°C | 14.9°C | 69 | 9.6 | 11.512 h |
| May | 19.8°C11.9°C | 11.9°C | 89 | 8.9 | 10.911 h |
| June | 18.9°C10.8°C | 10.8°C | 93 | 8.1 | 10.611 h |
| July | 18.8°C10.1°C | 10.1°C | 79 | 7.0 | 10.811 h |
| August, selected | 20.7°C10.8°C | 10.8°C | 72 | 7.2 | 11.311 h |
| September | 22.1°C12.5°C | 12.5°C | 127 | 10.4 | 11.912 h |
| October | 23.4°C14.4°C | 14.4°C | 138 | 15.1 | 12.713 h |
| November | 23.9°C15.2°C | 15.2°C | 133 | 16.0 | 13.313 h |
| December | 25.1°C16.9°C | 16.9°C | 172 | 20.2 | 13.614 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
August in nearby cities
- Ponta Grossa in AugustBrazil · 37 kmHigh 20.5°C · Low 9.9°C · 72 mm rain
- Telêmaco Borba in AugustBrazil · 80 kmHigh 22.7°C · Low 12.1°C · 64 mm rain
- Campo Largo in AugustBrazil · 89 kmHigh 19.5°C · Low 10.1°C · 76 mm rain
- Almirante Tamandaré in AugustBrazil · 92 kmHigh 19.9°C · Low 10.7°C · 72 mm rain
- Colombo, Brazil in AugustBrazil · 97 kmHigh 19.2°C · Low 10.2°C · 72 mm rain
- Curitiba in AugustBrazil · 103 kmHigh 19.7°C · Low 10.6°C · 82 mm rain
- Araucária in AugustBrazil · 108 kmHigh 19.8°C · Low 10.4°C · 76 mm rain
- Pinhais in AugustBrazil · 110 kmHigh 19.7°C · Low 10.7°C · 82 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 Castro) is explained once on the Castro year overview and on the Sources, method and limits page.