Ilhéus climate
Ilhéus (Bahia, Brazil) has a tropical monsoon climate (Köppen Am). The average temperature over the year is 26 °C78 °F, and about 1,193 mm47 in of precipitation falls in an average year.
Temperature by month
Precipitation by month
Ilhéus climate table
| Month | High °C°F | Low °C°F | Mean °C°F | Precip. mmin |
|---|---|---|---|---|
| Jan | 2882 | 2678 | 2780 | 1003.9 |
| Feb | 2882 | 2679 | 2780 | 993.9 |
| Mar | 2882 | 2679 | 2781 | 1265.0 |
| Apr | 2882 | 2678 | 2780 | 1204.7 |
| May | 2780 | 2577 | 2679 | 1124.4 |
| Jun | 2679 | 2475 | 2577 | 1074.2 |
| Jul | 2577 | 2374 | 2476 | 923.6 |
| Aug | 2577 | 2373 | 2475 | 773.0 |
| Sep | 2578 | 2374 | 2476 | 572.2 |
| Oct | 2679 | 2475 | 2577 | 843.3 |
| Nov | 2780 | 2577 | 2678 | 1234.9 |
| Dec | 2781 | 2578 | 2680 | 973.8 |
| Year | 2882 | 2373 | 2678 | 1,19347 |
“Year” row: highest monthly high, lowest monthly low, annual mean and annual total.
| Month | Humid. | Cloud | Solar | Daylight |
|---|---|---|---|---|
| Jan | 78% | 60% | 6.2 | 12:55 |
| Feb | 78% | 61% | 6.0 | 12:36 |
| Mar | 80% | 59% | 5.5 | 12:13 |
| Apr | 80% | 57% | 5.0 | 11:47 |
| May | 80% | 57% | 4.3 | 11:26 |
| Jun | 79% | 58% | 3.9 | 11:15 |
| Jul | 78% | 53% | 4.1 | 11:20 |
| Aug | 77% | 54% | 4.7 | 11:37 |
| Sep | 77% | 57% | 5.1 | 12:02 |
| Oct | 78% | 61% | 5.5 | 12:27 |
| Nov | 79% | 68% | 5.5 | 12:49 |
| Dec | 78% | 62% | 6.1 | 12:00 |
Humid. = average relative humidity at 2 m; cloud = average cloud amount; solar = average daily solar energy reaching the ground in kWh/m² (all-sky); daylight in hours:minutes, calculated for the 15th of each month.
What the climate of Ilhéus is like
The warmest month is March, with an average high of 28 °C82 °F and a low of 26 °C79 °F. The coldest is August, when highs average 25 °C77 °F and lows 23 °C73 °F. Seasonal differences are small — just 3.1 °C5.5 °F between the warmest and the coolest month.
It is wet, with about 1,193 mm47 in of precipitation per year. The wettest three-month stretch is March–May, which brings 30% of the annual total. The wettest month is March (126 mm5.0 in), the driest is September (57 mm2.2 in).
Relative humidity ranges from 77% in August to 80% in April. The clearest skies (lowest average cloud amount, 53%) are typical of July. Average wind speed near the ground ranges from 11 km/h (7 mph) in March to 13 km/h (8 mph) in October. Daylight lasts from about 11.3 hours in June to 13.0 hours in December.
Best time to visit Ilhéus
Based on these averages, the most comfortable months for sightseeing and outdoor activities are August–October: average highs of 25 °C77 °F to 26 °C79 °F with 57 mm2.2 in to 84 mm3.3 in of precipitation per month.
The most challenging month is March, which is humid (80% relative humidity).
Comfort score: months are ranked by how close they come to an average high of 21–28 °C (70–82 °F), lows above 5 °C (41 °F), little precipitation and moderate humidity. The best-ranked months of each place are recommended, even where none meets all of these. These are general rules of thumb applied to long-term averages.
What to pack for Ilhéus
- Wetter months (January, March–June, November) — highs 2679 to 28 °C82 °F, lows 2475 to 26 °C79 °F, about 115 mm4.5 in of precipitation a month. Pack light summer clothes such as T-shirts, shorts or light dresses and an umbrella or light rain jacket.
- Drier months (February, July–October, December) — highs 2577 to 28 °C82 °F, lows 2373 to 26 °C79 °F, about 84 mm3.3 in of precipitation a month. Pack light summer clothes such as T-shirts, shorts or light dresses.
How Ilhéus compares
Compared with Itabuna, about 27 km to the west, Ilhéus is on average 0.8 °C1.5 °F warmer and receives 10% more precipitation (1,193 mm47 in vs 1,087 mm43 in). The difference is largest in July (2 °C3.5 °F warmer).
Of the 223 places in Brazil covered by World Climates, Ilhéus is the 62nd warmest by annual mean temperature and the 170th wettest by annual precipitation. See all of them on the Brazil climate page.
Places in other countries with the most similar temperature and rainfall pattern: Alofi (Niue, Af), Port-Vila (Vanuatu, Am) and Avarua (Cook Islands, Af).
Nearby places
- Itabuna 27 km · 25 °C77 °F · 1,087 mm43 in
- Jequié 154 km · 25 °C76 °F · 1,133 mm45 in
- Porto Seguro 184 km · 25 °C77 °F · 1,215 mm48 in
- Vitória da Conquista 194 km · 21 °C70 °F · 761 mm30 in
- Santo Antônio de Jesus 205 km · 25 °C76 °F · 917 mm36 in
- Salvador 211 km · 26 °C79 °F · 1,212 mm48 in
- Lauro de Freitas 225 km · 26 °C79 °F · 1,105 mm44 in
- Camaçari 246 km · 26 °C78 °F · 1,216 mm48 in
Frequently asked questions
What is the warmest month in Ilhéus?
March is the warmest month in Ilhéus, with an average high of 28 °C (82 °F) and an average low of 26 °C (79 °F).
What is the coldest month in Ilhéus?
August is the coldest month, with an average high of 25 °C (77 °F) and an average low of 23 °C (73 °F).
When does it rain the most in Ilhéus?
March is the wettest month with about 126 mm (5.0 in) of precipitation; September is the driest with about 57 mm (2.2 in).
What is the best time to visit Ilhéus?
Judging by long-term averages, the most comfortable months are August–October.
About this data
All figures are 25-year averages (January 2001 – December 2025) from the NASA POWER project. Temperature, humidity, wind and precipitation come from the MERRA-2 reanalysis (precipitation is the bias-corrected MERRA-2 product), cloud and solar values from CERES satellite data. They describe a grid cell of roughly 50–70 km, not a single weather station, so they can differ from airport records — most of all on coasts, in mountains and for rainfall. Average highs and lows are the monthly mean temperature plus/minus half of the average daily temperature range. Counts of rainy days are not part of this dataset.