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Porto Seguro weather by month
Historical averages 2016–2025 · not a forecast
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When is the best time to visit Porto Seguro?
For a warm holiday, the best week has been 10–16 September (Weather Index 97). Favourable start dates for a 7-day trip run from 4 September to 17 September. February and March are warmest (31°C), September is driest and December to March have the most sun.
- Warmest
- February and March 31°C
- Coolest
- July and August 26°C
- Driest
- September 40% rain-day chance
- Wettest
- April 64% rain-day chance
- Sunniest
- December to March 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 Porto Seguro
Porto Seguro 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 | 23.5 | 57.1 | 17.7 | 100.6 | 11.0 |
| February | 30.8 | 23.7 | 61.1 | 17.1 | 71.7 | 11.2 |
| March | 30.7 | 23.5 | 61.9 | 19.2 | 82.8 | 11.0 |
| April | 29.4 | 23.0 | 64.3 | 19.3 | 124.9 | 10.0 |
| May | 28.0 | 21.5 | 55.5 | 17.2 | 78.0 | 10.0 |
| June | 26.9 | 20.2 | 51.7 | 15.5 | 55.2 | 9.9 |
| July | 26.0 | 19.3 | 48.7 | 15.1 | 50.7 | 9.9 |
| August | 26.2 | 19.5 | 45.5 | 14.1 | 49.2 | 9.8 |
| September | 27.3 | 20.4 | 40.3 | 12.1 | 47.4 | 10.3 |
| October | 28.5 | 22.1 | 52.3 | 16.2 | 85.6 | 10.4 |
| November | 28.5 | 22.5 | 56.7 | 17.0 | 159.9 | 9.5 |
| December | 29.6 | 23.1 | 52.6 | 16.3 | 169.0 | 10.7 |
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.