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Trancoso sits on the southern coast of Bahia, Brazil, inside Porto Seguro municipality, and its climate is tropical and warm all year. Average temperatures hold between 22°C and 26°C, and the Atlantic stays warm enough to swim in every month. The thing that changes through the year is rain: November and the March to April stretch are the wettest, while September and February are the driest. The figures below are monthly averages for Porto Seguro, the nearest weather station about 30km north. For help choosing your dates, read the best time to visit Trancoso guide.
Trancoso Weather by Month: January to March
January is one of the drier summer months with 81mm of rain across about 15 days, and temperatures average 25.8°C (78.5°F) with a daytime high of 28.8°C (83.9°F). February is the warmest month of the year at 26.0°C (78.9°F) on average, with highs of 29.1°C (84.3°F) and only 78mm of rain, so it is a strong beach month. March turns wetter with 121mm and 17 rainy days as the autumn rains arrive, though temperatures hold near 25.9°C (78.7°F). Sea temperatures run about 27°C to 28°C (81°F to 82°F) through this stretch.
Trancoso Weather by Month: April to June
April brings 123mm of rain and the start of the humid season, with averages cooling to 25.2°C (77.3°F). May drops to 23.9°C (75.1°F) with 109mm, and nights dip to about 22°C (71.5°F). June is cooler again at 22.9°C (73.2°F) with 85mm, and humidity sits near 84 percent through these three months. Expect short, heavy downpours rather than all-day rain, so most days still get several hours of sun.
Trancoso Weather by Month: July to September
July is the coolest month of the year at 22.2°C (71.9°F), with lows of 20.2°C (68.3°F) and 80mm of rain. August is nearly identical at 22.3°C (72.1°F) but drier at 67mm. September is the driest month with 64mm across only 10 rainy days and an average of 23.1°C (73.6°F), which makes it one of the best windows for beach time if you do not mind slightly cooler evenings. This is the period the things to do in Trancoso list works best for long beach days.
Trancoso Weather by Month: October to December
October warms back up to 24.1°C (75.3°F) with 109mm of rain. November is the wettest month of the year at 161mm across 14 rainy days, while temperatures average 24.7°C (76.5°F). December settles near 25.5°C (77.9°F) with 123mm and is one of the busiest travel months, so the where to stay in Trancoso guide is worth checking early for December and January rooms.
Trancoso Weather by Month: The Full Table
Monthly averages for Porto Seguro, about 30km north of Trancoso. Sea temperatures stay between 24°C and 28°C all year. For how the village’s zones line up with these conditions, see the Trancoso neighborhoods guide, and the Trancoso travel guide hub links all seven articles.
| Month | High °C | Low °C | Rain mm | Sea °C |
| January | 28.8 | 23.6 | 81 | 27 |
| February | 29.1 | 23.8 | 78 | 28 |
| March | 29.0 | 23.7 | 121 | 28 |
| April | 27.8 | 23.1 | 123 | 28 |
| May | 26.4 | 22.0 | 109 | 27 |
| June | 25.3 | 20.9 | 85 | 26 |
| July | 24.6 | 20.2 | 80 | 25 |
| August | 24.9 | 20.2 | 67 | 25 |
| September | 25.9 | 21.0 | 64 | 25 |
| October | 26.5 | 22.0 | 109 | 26 |
| November | 27.6 | 22.7 | 161 | 26 |
| December | 28.5 | 23.4 | 123 | 27 |
For a month-by-month event calendar that matches these conditions, see the Trancoso events and festivals guide, and for practical arrival advice read the Trancoso travel tips page.
