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Portão weather by month
Historical averages 2016–2025 · not a forecast
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When is the best time to visit Portão?
For a warm holiday, the best week has been 17–23 April (Weather Index 92). Several start dates remain plausible, and the best timing varies between years. January and February are warmest (30°C), July is driest and November to February have the most sun.
- Warmest
- January and February 30°C
- Coolest
- June and July 19°C
- Driest
- July 29% rain-day chance
- Wettest
- January 44% rain-day chance
- Sunniest
- November to February 11 hours a day
A rain day has 1 mm or more, snow included, so a short shower counts. Monthly averages below give the amounts.
Monthly averages in Portão
Portão historical monthly estimates, 2016–2025. Temperatures and sunshine are daily averages.
| Month | High (°C) | Low (°C) | Rain-day chance (%) | Expected rain days | Precipitation (mm/month) | Sunshine (hours/day) |
|---|---|---|---|---|---|---|
| January | 30.3 | 20.5 | 43.9 | 13.6 | 124.1 | 11.2 |
| February | 30.2 | 20.0 | 37.1 | 10.4 | 97.2 | 11.3 |
| March | 28.4 | 19.0 | 38.1 | 11.8 | 130.5 | 9.5 |
| April | 25.6 | 16.6 | 33.0 | 9.9 | 106.0 | 8.6 |
| May | 21.2 | 13.1 | 37.7 | 11.7 | 171.1 | 6.9 |
| June | 19.4 | 11.0 | 33.0 | 9.9 | 141.0 | 6.7 |
| July | 19.4 | 10.3 | 28.7 | 8.9 | 111.0 | 7.4 |
| August | 21.2 | 11.1 | 31.9 | 9.9 | 98.1 | 8.4 |
| September | 22.6 | 13.5 | 40.7 | 12.2 | 181.1 | 8.0 |
| October | 24.4 | 15.0 | 42.6 | 13.2 | 153.2 | 8.9 |
| November | 26.7 | 16.4 | 38.7 | 11.6 | 147.1 | 10.6 |
| December | 29.3 | 18.9 | 37.4 | 11.6 | 127.1 | 11.3 |
Each month averages its own days. Precipitation includes snow. About the data
Sources
Open-Meteo · 1 Jan 2016 – 31 Dec 2025
- Open-Meteo Historical Weather API
- Local days, 2016–2025, every year weighted equally. Each weekly chart averages its own seven days, without smoothing.
- Shading shows the 10th–90th percentile of past days, not forecast confidence.
- A rain day has at least 1 mm, snow included. The last weekly period has eight days.
- Wind is the average daytime (10:00–18:00) maximum, not gusts. Daylight is calculated from latitude. Missing readings stay blank.
- Mugginess (dew point) comes from the original daily summaries, on UTC days.
- The live two-week forecast comes from the Open-Meteo Weather Forecast API. The Weather Index does not use it.