Climate averages 1991–2020
Castro weather
in January.
A warm, very wet month: the warmest and the wettest of the year.
Long-term climate patterns, not a forecast for a particular trip.
January is a warm month in Castro: daytime highs average 25.3°C and nights cool to about 17.8°C. By daytime temperature it is the warmest month of the year.
Expect about 235 mm of rain on roughly 24 days, which makes January a very wet month (the wettest month of the year). Daylight, from sunrise to sunset, lasts about 13 h 29 min on an average January day.
The nearest other city in this atlas is Ponta Grossa (37 km away). In January its highs average 25.2°C, about as warm as Castro, with 201 mm of rain.
Among the 448 cities listed in Brazil, Castro ranks joint 428th of 448 for the warmest January highs and joint 266th of 448 for the driest January (rainfall, lowest first). The mean January high of those 448 cities is 28.5°C; Castro is 3.2°C cooler than that mean.
From January to February, average highs fall by 0.1°C to 25.2°C, and monthly rainfall falls from 235 mm to 180 mm.
The annual picture
January 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, selected | 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 | 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
January in nearby cities
- Ponta Grossa in JanuaryBrazil · 37 kmHigh 25.2°C · Low 17.4°C · 201 mm rain
- Telêmaco Borba in JanuaryBrazil · 80 kmHigh 26.9°C · Low 18.7°C · 218 mm rain
- Campo Largo in JanuaryBrazil · 89 kmHigh 24.7°C · Low 17.4°C · 219 mm rain
- Almirante Tamandaré in JanuaryBrazil · 92 kmHigh 25.0°C · Low 17.7°C · 233 mm rain
- Colombo, Brazil in JanuaryBrazil · 97 kmHigh 24.3°C · Low 17.3°C · 233 mm rain
- Curitiba in JanuaryBrazil · 103 kmHigh 24.8°C · Low 17.7°C · 218 mm rain
- Araucária in JanuaryBrazil · 108 kmHigh 25.0°C · Low 17.8°C · 219 mm rain
- Pinhais in JanuaryBrazil · 110 kmHigh 24.8°C · Low 17.9°C · 218 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.