Climate averages 1991–2020
Ilhéus weather
in December.
A hot, wet month: the 4th warmest and the joint 8th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
December is a hot month in Ilhéus: daytime highs average 28.5°C and nights cool to about 23.6°C. By daytime temperature it is the 4th warmest of the 12 months.
Expect about 110 mm of rain on roughly 18 days, which makes December a wet month (the joint 8th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 59 min on an average December day.
The nearest other city in this atlas is Itabuna (27 km away). In December its highs average 28.6°C, about as warm as Ilhéus, with 120 mm of rain.
Among the 448 cities listed in Brazil, Ilhéus ranks joint 207th of 448 for the warmest December highs and joint 94th of 448 for the driest December (rainfall, lowest first). The mean December high of those 448 cities is 28.5°C; Ilhéus is 0.1°C warmer than that mean.
From December to January, average highs rise by 0.3°C to 28.8°C, and monthly rainfall falls from 110 mm to 95 mm.
The annual picture
December in context
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Ilhéus climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 28.8°C23.7°C | 23.7°C | 95 | 20.4 | 12.913 h |
| February | 29.0°C23.7°C | 23.7°C | 82 | 19.5 | 12.613 h |
| March | 28.9°C23.7°C | 23.7°C | 116 | 23.1 | 12.212 h |
| April | 28.0°C23.1°C | 23.1°C | 131 | 23.1 | 11.812 h |
| May | 26.8°C22.0°C | 22.0°C | 110 | 19.1 | 11.411 h |
| June | 25.6°C20.9°C | 20.9°C | 98 | 19.4 | 11.311 h |
| July | 24.9°C20.1°C | 20.1°C | 95 | 20.1 | 11.311 h |
| August | 25.0°C19.9°C | 19.9°C | 70 | 17.7 | 11.612 h |
| September | 26.0°C20.9°C | 20.9°C | 61 | 15.1 | 12.012 h |
| October | 27.1°C22.1°C | 22.1°C | 83 | 16.1 | 12.412 h |
| November | 27.7°C22.9°C | 22.9°C | 125 | 17.9 | 12.813 h |
| December, selected | 28.5°C23.6°C | 23.6°C | 110 | 17.9 | 13.013 h |
Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
December in nearby cities
- Itabuna in DecemberBrazil · 27 kmHigh 28.6°C · Low 22.3°C · 120 mm rain
- Itapetinga in DecemberBrazil · 140 kmHigh 29.8°C · Low 21.6°C · 96 mm rain
- Jequié in DecemberBrazil · 154 kmHigh 30.3°C · Low 21.9°C · 98 mm rain
- Valença (Bahia), Brazil in DecemberBrazil · 159 kmHigh 29.2°C · Low 23.5°C · 71 mm rain
- Porto Seguro in DecemberBrazil · 184 kmHigh 28.8°C · Low 23.6°C · 110 mm rain
- Eunápolis in DecemberBrazil · 185 kmHigh 29.4°C · Low 21.9°C · 114 mm rain
- Vitória da Conquista in DecemberBrazil · 194 kmHigh 27.4°C · Low 18.5°C · 116 mm rain
- Santo Antônio de Jesus in DecemberBrazil · 205 kmHigh 29.7°C · Low 21.6°C · 70 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Ilhéus) is explained once on the Ilhéus year overview and on the Sources, method and limits page.