Log visit
Brazil
Porto Belo weather by month
Historical averages 2016–2025 · not a forecast
Loading your weather period…
When is the best time to visit Porto Belo?
For a warm holiday, the best week has been 19–25 April (Weather Index 91). Favourable start dates for a 7-day trip run from 15 April to 25 April. January and February are warmest (30°C), July is driest and January, February and December have the most sun.
- Warmest
- January and February 30°C
- Coolest
- June, July and August 22°C
- Driest
- July 23% rain-day chance
- Wettest
- January 69% rain-day chance
- Sunniest
- January, February and December 10 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 Porto Belo
Porto Belo 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 | 29.9 | 22.0 | 68.7 | 21.3 | 216.2 | 10.2 |
| February | 29.9 | 21.8 | 67.1 | 18.8 | 182.2 | 10.4 |
| March | 28.9 | 21.2 | 61.6 | 19.1 | 147.3 | 9.5 |
| April | 26.7 | 18.8 | 44.0 | 13.2 | 100.4 | 8.9 |
| May | 23.8 | 15.9 | 36.8 | 11.4 | 119.7 | 7.6 |
| June | 21.9 | 13.9 | 31.0 | 9.3 | 90.5 | 7.2 |
| July | 21.6 | 12.8 | 22.9 | 7.1 | 57.3 | 7.8 |
| August | 22.1 | 13.7 | 31.9 | 9.9 | 84.1 | 7.9 |
| September | 23.7 | 16.1 | 40.0 | 12.0 | 104.1 | 8.2 |
| October | 24.5 | 17.7 | 55.2 | 17.1 | 162.5 | 7.2 |
| November | 26.1 | 18.6 | 54.7 | 16.4 | 133.1 | 9.1 |
| December | 28.6 | 20.7 | 60.0 | 18.6 | 181.3 | 10.3 |
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.